JP7176610B2 - device - Google Patents

Description

The present disclosure relates to devices, substrates, liquid containers, printing systems, and techniques for using substrates or liquid containers.

2. Description of the Related Art Conventionally, there is known a technique for detecting attachment of an ink cartridge detachably attached to a printing apparatus using an attachment detection terminal included in a terminal group (Patent Document 1). The terminal group consists of four attachment detection terminals including terminals to which a high voltage higher than the power supply voltage is applied, and five memory terminals. The attachment detection terminals are located at the four corners of the terminal group so as to surround the memory terminals. are placed. In Japanese Patent Application Laid-Open No. 2002-100003, when it is detected that the attachment detection terminal is electrically connected to the device-side terminal, the printing device determines that the ink cartridge is attached to the printing device.

Also, there is known a technique for detecting attachment of an ink cartridge detachably attached to a printing apparatus using a memory terminal (Patent Document 2). A storage device such as a memory provided in an ink cartridge sends a response signal to notify that it is connected to a host device such as a printer through any of the reset terminal, clock terminal, and data terminal. output to the host terminal via Based on the response signal from the storage device, the host device determines whether or not the storage device is connected to the host device without using a terminal dedicated to connection detection.

International Publication No. 2012-029311 Japanese Unexamined Patent Application Publication No. 2011-170740

However, Patent Documents 1 and 2 do not mention the detection of a short circuit between memory terminals. In Patent Document 1, if a short circuit between memory terminals occurs, even if it is determined that the ink cartridge is installed in the printing apparatus, the printing apparatus may not operate normally, and reading/writing from/to the memory of the ink cartridge may occur. may not work properly. In Patent Document 2, if a short circuit between memory terminals occurs, the memory cannot output an original signal to the printing device, and the printing device detects that the memory is properly connected to the printing device. It may not be possible to judge

The present disclosure has been made to solve the above problems, and an object of the present disclosure is to provide a technique capable of detecting whether or not a short circuit has occurred between terminals in a liquid container such as an ink cartridge. be one of Another object of the present invention is to provide a technique capable of detecting that a liquid container is attached. Another object is to provide a technique capable of detecting a short circuit even if a short circuit occurs between terminals. Another object is to provide a technique capable of suppressing a short circuit between terminals. The present disclosure achieves at least one of the above objectives.

According to a first aspect of the present disclosure, a print head, a liquid introduction section that introduces liquid into the print head, a storage section provided with the liquid introduction section, and a plurality of a device-side terminal; and a device configured to be electrically connected to a plurality of terminals of a liquid container mounted in the container of the printing device. This device is configured to meet I, II, III, and IV below.
I: A first signal including a first low voltage, a second signal including a second low voltage, and a second high voltage higher than the second low voltage are applied to the plurality of terminals. 1 terminal.
II: The first signal and the second signal indicate that the first terminal and terminals other than the first terminal included in the plurality of terminals are not short-circuited, and that the liquid container is It is used by the printing device to determine that it is attached to the printing device.
III: Outputting the first signal to the first terminal, and outputting the second signal to the first terminal after outputting the first signal.
IV: A clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is input to a second terminal included in the other terminals, and the voltage input to the second terminal is the high voltage. At a first timing in the period, the first low voltage is output to the first terminal, and after the first low voltage is output, the voltage input to the second terminal is the low voltage. At timing, the second high voltage is output to the first terminal, and after outputting the second high voltage, at a third timing in a period in which the voltage input to the second terminal is the high voltage, A second low voltage is output to the first terminal.

According to a second aspect of the present disclosure, a print head, a liquid introduction section that introduces liquid into the print head, a storage section that is provided with the liquid introduction section and stores a liquid storage container, and and a plurality of device-side terminals, and is configured to be attached to a printing device and configured to make contact with the plurality of device-side terminals. The substrate includes a substrate, a device provided on the substrate, and a plurality of terminals provided on the substrate and electrically connected to the device, wherein the plurality of terminals is a first and other terminals including a second terminal, configured to satisfy conditions I, II, III, and IV below.
I: The device receives a first signal comprising a first low voltage, a second low voltage, and a second signal comprising a second high voltage higher than the second low voltage, to the first terminal. output to a printer.
II: The first signal and the second signal are used by the printing device to determine that the first terminal and the other terminal are not short-circuited and that the substrate is attached to the printing device. used for
III: The device outputs the first signal to the first terminal, and outputs the second signal to the first terminal after outputting the first signal.
IV: when the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is input from the printing device to the second terminal; At a first timing in a period in which the voltage input to the second terminal is the high voltage, the first low voltage is output from the first terminal to the printing device as a first expected value, and the first low voltage is output. After outputting the voltage, the second high voltage is output from the first terminal to the printing device as a second expected value at a second timing in a period in which the voltage input to the second terminal is the low voltage. and after outputting the second high voltage, the second low voltage is applied to the first terminal as a third expected value at a third timing in a period in which the voltage input to the second terminal is the high voltage. to the printing device.

According to a third aspect of the present disclosure, a print head, a liquid introduction section that introduces liquid to the print head, a storage section provided with the liquid introduction section, and a plurality of device side devices provided in the storage section and a terminal to be attached to the container of the printing apparatus. This liquid container includes a liquid container capable of containing a liquid, and a liquid supply port attached to the liquid introduction section of the printing apparatus for supplying liquid from the liquid container to the liquid introduction section of the printing apparatus. a device; and a plurality of terminals electrically connected to the device, the plurality of terminals including a first terminal and other terminals including a second terminal; It is configured to satisfy I, II, III, and IV below.
I: The device receives a first signal comprising a first low voltage, a second low voltage, and a second signal comprising a second high voltage higher than the second low voltage, to the first terminal. output to a printer.
II: The first signal and the second signal indicate that the first terminal and the other terminal are not short-circuited and that the liquid container is attached to the printing apparatus. Used to judge.
III: The device outputs the first signal from the first terminal to the printer, and after outputting the first signal, outputs the second signal from the first terminal to the printer.
IV: when the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is input from the printing device to the second terminal; At a first timing in a period in which the voltage input to the second terminal is the high voltage, the first low voltage is output from the first terminal to the printing device as a first expected value, and the first low voltage is output. After outputting the voltage, the second high voltage is output from the first terminal to the printing device as a second expected value at a second timing in a period in which the voltage input to the second terminal is the low voltage. Then, after the second high voltage is output, at a third timing in a period in which the voltage input to the second terminal is the high voltage, the second low voltage is set to the first voltage as a third expected value. Output from the terminal to the printer.

According to a fourth aspect of the present disclosure, a printing system is provided. This printing system includes a printing device, a liquid container capable of containing liquid, a liquid supply section having a liquid supply port, a device, a plurality of terminals connected to the device, the device and the plurality of terminals. The printing device comprises a print head, a liquid introduction section for introducing liquid to the print head, and a plurality of device-side terminals, wherein the liquid supply of the liquid container is The port supplies the liquid from the liquid container to the liquid introduction portion of the printing device, the substrate is mounted on the printing device and configured to contact the plurality of device-side terminals, The plurality of terminals includes a first terminal and other terminals including a second terminal, and is configured to satisfy conditions I, II, III, and IV below.
I: The device receives a first signal comprising a first low voltage, a second low voltage, and a second signal comprising a second high voltage higher than the second low voltage, to the first terminal. output to a printer.
II: The first signal and the second signal are used by the printing device to determine that the first terminal and the other terminal are not short-circuited and that the substrate is attached to the printing device. used for
III: The device outputs the first signal from the first terminal to the printer, and after outputting the first signal, outputs the second signal from the first terminal to the printer.
IV: when the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is input from the printing device to the second terminal; At a first timing in a period in which the voltage input to the second terminal is the high voltage, the first terminal outputs the first low voltage as a first expected value to the printing device, and the first After outputting the low voltage, at a second timing in a period in which the voltage input to the second terminal is the low voltage, the first terminal outputs the second high voltage as a second expected value to the printing apparatus. , and after the second high voltage is output, at a third timing in a period in which the voltage input to the second terminal is the high voltage, the first terminal outputs the third expected value as the A second low voltage is output to the printing device.

According to a fifth aspect of the present disclosure, a printing system is provided. This printing system includes a printing device and a liquid storage container attached to the printing device, and the printing device includes a print head, a liquid introduction section that introduces liquid to the print head, and a plurality of device side a terminal, wherein the liquid container includes a liquid container capable of containing liquid; a liquid supply unit having a liquid supply port for supplying liquid from the liquid container to the liquid introduction unit of the printing apparatus; a device and a plurality of terminals connected to the device, the plurality of terminals including a first terminal and other terminals including a second terminal; is configured to meet
I: The device receives a first signal comprising a first low voltage, a second low voltage, and a second signal comprising a second high voltage higher than the second low voltage, to the first terminal. output to a printer.
II: The first signal and the second signal indicate that the first terminal and the other terminal are not short-circuited and that the liquid container is attached to the printing apparatus. Used to judge.
III: The device outputs the first signal from the first terminal to the printer, and after outputting the first signal, outputs the second signal from the first terminal to the printer.
IV: when the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is input from the printing device to the second terminal; At a first timing in a period in which the voltage input to the second terminal is the high voltage, the first terminal outputs the first low voltage as a first expected value to the printing device, and the first After outputting the low voltage, at a second timing in a period in which the voltage input to the second terminal is the low voltage, the first terminal outputs the second high voltage as a second expected value to the printing apparatus. , and after the second high voltage is output, at a third timing in a period in which the voltage input to the second terminal is the high voltage, the first terminal outputs the third expected value as the A second low voltage is output to the printing device.

According to a sixth aspect of the present disclosure, a print head, a liquid introduction section that introduces liquid into the print head, an accommodation section that is provided with the liquid introduction section and accommodates a liquid container, and and a plurality of device-side terminals mounted on a printing device and configured to make contact with the plurality of device-side terminals. This substrate use comprises a substrate, a device provided on the substrate, and a plurality of terminals electrically connected to the device, the plurality of terminals comprising a first terminal and a second terminal. and other terminals including terminals, configured to satisfy I, II, III, and IV below.
I: The device receives a first signal comprising a first low voltage, a second low voltage, and a second signal comprising a second high voltage higher than the second low voltage, to the first terminal. output to a printer.
II: The first signal and the second signal are used by the printing device to determine that the first terminal and the other terminal are not short-circuited and that the substrate is attached to the printing device. used for
III: The device outputs the first signal from the first terminal to the printer, and after outputting the first signal, outputs the second signal from the first terminal to the printer.
IV: when the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is input from the printing device to the second terminal; At a first timing in a period in which the voltage input to the second terminal is the high voltage, the first low voltage is output from the first terminal to the printing device as a first expected value, and the first low voltage is output. After outputting the voltage, the second high voltage is output from the first terminal to the printing device as a second expected value at a second timing in a period in which the voltage input to the second terminal is the low voltage. and after outputting the second high voltage, the second low voltage is applied to the first terminal as a third expected value at a third timing in a period in which the voltage input to the second terminal is the high voltage. to the printing device.

According to a seventh aspect of the present disclosure, a print head, a liquid introduction section that introduces liquid to the print head, a storage section provided with the liquid introduction section, and a plurality of device side devices provided in the storage section There is provided the use of a liquid container to be mounted in the container of a printing device, comprising a terminal. The use of this liquid storage container includes a liquid storage body capable of storing liquid, and a liquid supply port attached to the liquid introduction section of the printing apparatus for supplying liquid from the liquid storage body to the liquid introduction section. a supply unit, a device, and a plurality of terminals electrically connected to the device, the plurality of terminals including a first terminal and other terminals including a second terminal; , II, III, and IV.
I: The device receives a first signal comprising a first low voltage, a second low voltage, and a second signal comprising a second high voltage higher than the second low voltage, to the first terminal. output to a printer.
II: The first signal and the second signal indicate that the first terminal and the other terminal are not short-circuited and that the liquid container is attached to the printing apparatus. Used to judge.
III: The device outputs the first signal from the first terminal to the printer, and after outputting the first signal, outputs the second signal from the first terminal to the printer.
IV: when the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is input from the printing device to the second terminal; At a first timing in a period in which the voltage input to the second terminal is the high voltage, the first low voltage is output from the first terminal to the printing device as a first expected value, and the first low voltage is output. After outputting the voltage, the second high voltage is output from the first terminal to the printing device as a second expected value at a second timing in a period in which the voltage input to the second terminal is the low voltage. Then, after the second high voltage is output, at a third timing in a period in which the voltage input to the second terminal is the high voltage, the second low voltage is set to the first voltage as a third expected value. Output from the terminal to the printer.

2 is a perspective view showing the hardware configuration of the printing system; FIG. 1 is an explanatory diagram showing a schematic configuration of a printing system; FIG. FIG. 2 is a first perspective view showing the configuration of the liquid storage container; The 2nd perspective view which shows the structure of a liquid storage container. FIG. 1 is a first diagram showing the configuration of a substrate; FIG. 2 is a second diagram showing the configuration of a substrate; FIG. 4 is a view showing how the liquid container is attached to the carriage; A first view showing a connection mechanism. A second view showing the connection mechanism. FIG. 2 is a diagram schematically showing the electrical configuration of a printing system; FIG. 2 is a diagram showing the functional configuration of a printing apparatus together with one liquid container; 6 is a flowchart of processing executed by the printing apparatus in connection state determination processing. 6 is a flowchart of processing executed by the device in the connection state determination processing; 4 is a timing chart when the printer outputs a request signal; A timing chart when the device outputs the first response signal and the second response signal. The figure which shows the detail of a 1st response signal. The figure which shows the detail of a 2nd response signal. The figure which shows the outline|summary of the determination processing of the connection state which a main-control part performs. FIG. 11 is a first timing chart of connection state determination processing; FIG. A second timing chart of connection state determination processing. A third timing chart of the connection state determination process. The fourth timing chart of the connection state determination process. The fifth timing chart of the connection state determination process. The sixth timing chart of the connection state determination process. The seventh timing chart of the connection state determination process. The eighth timing chart of the connection state determination process. The ninth timing chart of the connection state determination process. A tenth timing chart of the connection state determination process. The eleventh timing chart of the connection state determination process. A twelfth timing chart of connection state determination processing. The thirteenth timing chart of the connection state determination process. FIG. 11 is a diagram for explaining another specific example of connection state determination processing; FIG. 4 is a diagram for explaining a substrate as another embodiment 1; No. in FIG. 2 and no. 3 is a diagram showing an arrangement example shown in FIG. FIG. 10 is a diagram showing two patterns of substrates as another embodiment 2; FIG. 11 is a diagram showing two patterns of substrates as another embodiment 3; FIG. 11 is a diagram showing two patterns of substrates as another embodiment 4; FIG. 12 is a diagram showing two patterns of substrates as another embodiment 4; FIG. 11 is a diagram for explaining a substrate as another embodiment 5; FIG. 12 is a diagram showing two patterns of substrates as another embodiment 6; FIG. 11 is a diagram showing a substrate as another embodiment 7; 4 is a perspective view showing a liquid storage container as another embodiment 1. FIG. FIG. 8 is a perspective view showing a liquid storage container as another embodiment 2; FIG. 4 is an enlarged view of the periphery of the substrate of the liquid container. FIG. 11 is a perspective view showing a liquid storage container as another embodiment 3; FIG. 11 is a perspective view showing a liquid storage container as another embodiment 4; FIG. 12 is a perspective view showing a liquid storage container as another embodiment 5; FIG. 12 is a perspective view showing a liquid storage container as another embodiment 6; The figure which shows the liquid storage container as other Embodiment 7. FIG. FIG. 11 is a diagram showing a liquid storage container as another embodiment 8; FIG. 21 is a perspective view showing a liquid storage container as another embodiment 9; Enlarged view around the substrate. FIG. 1 is a first view for explaining the process of mounting the liquid storage container in the storage section of the printing apparatus; FIG. 2 illustrates the process of mounting the liquid storage container to the storage section of the printing apparatus; The figure which shows the completion state of mounting|wearing of a liquid storage container. FIG. 10 is a diagram showing a printing system as another embodiment 1; FIG. 10 is a diagram showing a printing system as another embodiment 2; FIG. 11 is a diagram showing a printing system as another embodiment 3; FIG. 11 is a diagram showing a printing system as another embodiment 4; A first timing chart in a printing system with six liquid containers. A second timing chart in a printing system with six liquid containers. FIG. 4 is a diagram schematically showing the electrical configuration of a printing system that includes six liquid containers; FIG. 3 shows a device as another embodiment 1;

A. First embodiment:
A1. Hardware configuration:
An overview of the printing system 1000 will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is a perspective view showing the hardware configuration of a printing system 1000. As shown in FIG. FIG. 2 is an explanatory diagram showing a schematic configuration of the printing system 1000. As shown in FIG. In FIG. 1, X-axis, Y-axis, and Z-axis which are orthogonal to each other are attached. The directions in which the arrows of the X-, Y-, and Z-axes point are positive directions along the X-, Y-, and Z-axes, respectively. The positive directions along the X-axis, Y-axis, and Z-axis are defined as +X direction, +Y direction, and +Z direction, respectively. The directions opposite to the directions in which the arrows of the X-, Y-, and Z-axes are directed are the negative directions along the X-, Y-, and Z-axes, respectively. Negative directions along the X-axis, Y-axis, and Z-axis are defined as -X direction, -Y direction, and -Z direction, respectively. Directions along the X-, Y-, and Z-axes, regardless of whether they are positive or negative, are referred to as the X-, Y-, and Z-directions, respectively. The same applies to the drawings and explanations that follow. The X-, Y-, and Z-axes drawn in other figures correspond to the X-, Y-, and Z-axes in FIG. In FIG. 1, the front direction of the printing system 1000 is the +Y direction when the printing system 1000 is in a normal usage posture. The +Z direction is the direction of gravity, and the -Z direction is the anti-gravity direction.

A printing system 1000 includes a printing device 20 and a plurality of liquid containers 100 . The printing device 20 is specifically an inkjet printer. The liquid container 100 is specifically an ink cartridge. The printing device 20 includes a head drive mechanism, a main scanning feed mechanism, and a sub-scan feed mechanism.

The head drive mechanism has a carriage 30 . The carriage 30 includes an accommodation section 4 and a print head 5 . The storage section 4 is configured to detachably mount four liquid storage containers 100 . In the present disclosure, "the liquid container 100 is attached to the printing apparatus 20" means that the liquid container 100 is physically attached to the printing apparatus 20, and the contact portions cp of the terminals 290, which will be described later, are attached to the apparatus side, which will be described later. It means to be electrically connected to the terminal 490 . Each of the four liquid storage containers 100 is housed in a predetermined position of the housing section 4 . In the present disclosure, each of the four liquid containers 100 contains liquids of different colors. The liquid is specifically ink, and is hereinafter referred to as ink. When the four liquid storage containers 100 are shown separately, they are denoted as liquid storage containers 100A to 100D. The carriage 30 is configured to be movable between a replacement position where the liquid container 100 can be replaced and a standby position where the liquid container 100 cannot be replaced.

The print head 5 is provided on the surface of the carriage 30 in the +Z direction. A plurality of nozzles for ejecting ink droplets are provided on the surface of the print head 5 facing the +Z direction. Each nozzle is connected to one of the liquid storage containers 100A to 100D attached to the storage section 4 via a channel in the carriage 30. FIG. The storage portion 4 is provided with a liquid introduction portion 6 described later and a connection mechanism 400 described later. The liquid introduction part 6 is configured to be detachable from a liquid supply port 104op of the liquid storage container 100, which will be described later. The liquid introduction section 6 is supplied with ink from the liquid storage container 100 and introduces the ink to the print head 5 through the flow path in the carriage 30 . The connection mechanism 400 has a plurality of device-side terminals 490, which will be described later.

The main scanning feed mechanism includes a drive belt 36 , a carriage motor 32 , a slide shaft 34 and pulleys 38 . The drive belt 36 is an endless belt and stretched between the carriage motor 32 and the pulley 38 . The carriage 30 is fixed to the drive belt 36 . The sliding shaft 34 is provided in parallel with the shaft of the paper feed roller 26, which will be described later, and holds the carriage 30 in a slidable manner. Rotation of the carriage motor 32 causes the carriage 30 fixed to the drive belt 36 to move along the sliding shaft 34 in the +X direction and the -X direction.

The sub-scan feed mechanism has a paper feed motor 22 and a paper feed roller 26 . As the paper feed motor 22 rotates, the paper feed roller 26 conveys the print medium PA in the Y direction.

The printing device 20 further includes a main control section 40 . The main controller 40 is connected to the carriage 30 via a cable 31 . A bus 46 is formed in the cable 31 , and the main control unit 40 is electrically connected to a sub-control board 500 (described later) of the carriage 30 via the bus 46 .

The main control unit 40 implements print processing by controlling each mechanism described above. For example, the main control unit 40 receives a user's print job from the computer 90 via the connector 80, and executes printing based on the contents of the received print job. The print medium PA is conveyed in the +Y direction by the paper feed roller 26, and the print head 5 provided on the carriage 30 is moved in the +X direction and the -X direction by the drive belt 36, whereby the print head 5 is ejected in the +Z direction. The ink lands on the printing medium PA at an arbitrary location to form an image. In the present disclosure, "image" includes characters and symbols. In the present disclosure, the +X direction and the −X direction in which the carriage 30 moves are collectively referred to as the “main scanning direction”. The −Y direction and +Y direction in which the print medium PA is fed are collectively referred to as “sub-scanning directions”.

The printing device 20 further includes an operation section 70 . The user uses the operation unit 70 to make various settings for the printing device 20 and to check the status of the printing device 20 .

As described above, the printing apparatus 20 includes the print head 5, the liquid introduction section 6 that introduces the liquid to the print head 5, the storage section 4 that is provided with the liquid introduction section 6 and stores the liquid storage container 100, and a plurality of and a device-side terminal 490 . The print head 5 is provided in the printing device 20 . The print head 5 is not provided in the liquid container 100 . The form in which the print head 5 is provided in the liquid container 100 is different from the technical field of the present disclosure.

The configuration of the liquid storage container 100 will be described with reference to FIGS. 3 and 4. FIG. FIG. 3 is a first perspective view showing the structure of the liquid container 100. FIG. FIG. 4 is a second perspective view showing the configuration of the liquid container 100. As shown in FIG. As for the directions of the X-axis, Y-axis, and Z-axis of the liquid container 100, the printing device 20 is arranged on a horizontal plane parallel to the X direction and the Y direction, and the liquid container 100 is positioned on the printing device 20 as in FIG. 100 is attached as a reference.

As shown in FIGS. 3 and 4, the external shape of the liquid storage container 100 is substantially rectangular parallelepiped. As shown in FIG. 3, the liquid container 100 includes a liquid container 101 capable of containing ink as a liquid, a liquid supply section 104 having a liquid supply port 104op, and a substrate 120. As shown in FIG.

The liquid container 101 forms the outer shell of the liquid container 100 . The liquid container 101 has a first wall 101wf, a second wall 101wr, a third wall 101wb, a fourth wall 101wu, a fifth wall 101wsa, and a sixth wall 101wsb. These six walls 101wf, 101wr, 101wb, 101wu, 101wsa, and 101wsb define an ink chamber 150 that stores ink inside the liquid container 101 . The first wall 101wf is a wall on the +Y direction side and constitutes a front wall. The front wall faces the front side of the printing system 1000 . The second wall 101wr faces the first wall 101wf. The second wall 101wr is a wall on the -Y direction side and constitutes a rear wall. The back wall faces the back side of the printing system 1000 . The third wall 101wb intersects the first wall 101wf and the second wall 101wr and is substantially orthogonal in this embodiment. The third wall 101wb is a wall on the +Z direction side and constitutes a bottom wall. The fourth wall 101wu intersects the first wall 101wf and the second wall 101wr and is substantially orthogonal in this embodiment. The fourth wall 101wu faces the third wall 101wb. The fourth wall 101wu is a wall on the -Z direction side and constitutes an upper wall. The fifth wall 101wsa intersects the first wall 101wf to the fourth wall 101wu, and is substantially perpendicular in this embodiment. The fifth wall 101wsa is a wall on the -X direction side and constitutes a right side wall. The sixth wall 101wsb intersects the first wall 101wf to the fourth wall 101wu, and is substantially perpendicular in this embodiment. The sixth wall 101wsb faces the fifth wall 101wsa. The sixth wall 101wsb is a wall on the +X direction side and constitutes a left side wall.

The liquid supply part 104 is a tubular member protruding from the third wall 101wb. The liquid supply port 104op is located on the tip side of the liquid supply section 104 . The liquid supply port 104op communicates with the ink chamber 150 of the liquid container 101, and supplies ink to the later-described liquid introduction portion 6 of the carriage 30 when the liquid container 100 is attached to the carriage 30 of the printing apparatus 20. . The liquid supply port 104op is sealed with a film 104f. The liquid supply port 104op is configured to be detachable from the liquid introduction section 6. As shown in FIG. When the liquid storage container 100 is attached to the carriage 30, the liquid introducing portion 6 tears the film 104f. Ink contained in the ink chamber 150 is supplied to the print head 5 of the printing device 20 via the liquid introduction section 6 . As the ink in the ink chamber 150 is consumed, air is introduced into the ink chamber 150 through an air release hole (not shown).

A direction in which the liquid container 100 is mounted on the carriage 30 of the printing apparatus 20 is defined as a mounting direction MD. The mounting direction MD is also the direction in which the board 120 is mounted on the carriage 30 of the printing device 20 . In this embodiment, the mounting direction MD is the +Z direction. Two directions orthogonal to each other are defined as a first direction FD and a second direction SD. The first direction FD is a direction including a component of the mounting direction MD. In this embodiment, the first direction FD is the Z direction and the second direction SD is the X direction. A first direction FD is a direction substantially along the front surface 120fa of the substrate 120 .

The first direction FD is also defined as follows. For example, the first direction FD is a direction perpendicular to a virtual plane including the liquid supply port 104op. For example, the first direction FD is the direction in which device-side terminals 490 of the printing device 20 described later pass over the terminals 290 described later when the liquid container 100 and the substrate 120 are mounted on the carriage 30 . For example, the first direction FD is a direction perpendicular to the direction in which the plurality of device-side terminals 490 of the printing device 20 are arranged. In another embodiment, when the front surface 120fa is inclined with respect to the mounting direction MD, the first direction FD is different from the mounting direction MD.

The substrate 120 is used for the liquid storage container 100 . In this embodiment, the substrate 120 is provided on the second wall 101wr of the liquid container 101, as shown in FIG. Details of the substrate 120 will be described later.

Two protrusions Pr1 and Pr2 are formed on the second wall 101wr. These protrusions Pr1 and Pr2 protrude in the -Y direction. A substrate 120 is formed with a hole 122 and a notch 121 for receiving these protrusions Pr1 and Pr2, respectively. The hole 122 is formed in the center of the end of the substrate 120 on the side of the liquid supply section 104 , and the notch 121 is formed in the center of the end of the substrate 120 opposite to the liquid supply section 104 . When fixing the substrate 120 to the second wall 101wr, the protrusions Pr1 and Pr2 are inserted into the hole 122 and the notch 121, respectively. After the substrate 120 is inserted into the second wall 101wr, the tips of these protrusions Pr1 and Pr2 are crushed. Thereby, the substrate 120 is fixed to the second wall 101wr. Note that the means for fixing the substrate 120 to the second wall 101wr is not limited to this.

In this embodiment, when the liquid container 100 is viewed from a direction perpendicular to the second wall 101wr on which the substrate 120 is provided, the substrate 120 is arranged so that the central axis of the liquid supply port 104op and a first imaginary line C1, which will be described later, overlap. are placed in A contact portion cp, which will be described later, is not arranged on the central axis of the liquid supply port 104op.

As shown in FIG. 3, the liquid container 100 further includes a liquid detection member 110. As shown in FIG. The liquid detection member 110 is fixed inside the liquid container 101 . The liquid detection member 110 is a member used by the printer 20 to detect the amount of ink remaining in the liquid container 100 . The liquid detection member 110 may be, for example, a prism for optically detecting the remaining amount of ink, or may be a piezoelectric element in which a piezoelectric body is sandwiched between two opposing electrodes. It may be two electrodes that detect the remaining amount of ink according to the difference in resistance between the electrodes. Note that the liquid detection member 110 may not be provided.

Details of the substrate 120 will be described with reference to FIGS. 5 and 6. FIG. FIG. 5 is a first diagram showing the configuration of the substrate 120. As shown in FIG. FIG. 6 is a second diagram showing the configuration of the substrate 120. As shown in FIG. As shown in FIG. 6, the substrate 120 includes a base material 120bd, multiple terminals 290, the device 130, and wiring (not shown). Substrate 120 may include other configurations. The base material 120bd has a front surface 120fa and a back surface 120fb. In this embodiment, the front surface 120fa and the rear surface 120fb are flat surfaces. The base material 120bd may be made of a material that constitutes a rigid board, a flexible board, or the like. The terminal 290 is made of a conductor such as gold foil.

In the present disclosure, "surface" is defined, for example, as follows. For example, the "surface" is the surface of the base material 120bd that faces the device-side terminals 490 described below when the liquid container 100 and the substrate 120 are attached to the printing device 20. FIG. For example, the "surface" is the surface of the base material 120bd that faces the device-side terminals 490 described later when the liquid container 100 and the substrate 120 are attached to the printing device 20, and the surface on which the terminals 290 are formed. is. For example, the "surface" is the surface of the base material 120bd that includes the contact portion cp, which will be described later. In this embodiment, the "surface" is the front surface 120fa. In other embodiments, the "surface" is the front surface 120fa unless otherwise specified.

As shown in FIG. 5 , the plurality of terminals 290 includes data terminals 210 , clock terminals 220 , power terminals 230 , reset terminals 240 and ground terminals 250 . Each terminal 210 , 220 , 230 , 240 , 250 is connected to device 130 . The terminals 210 to 250 are electrically connected to the device 130 via wiring pattern layers provided on the front surface 120fa and the back surface 120fb of the base material 120bd and through holes provided inside the base material 120bd. there is Data terminal 210 is used to transmit and receive data signal SDA between device 130 and printing device 20 . Here, "signal" refers to a change in voltage. Signals transmitted and received via the data terminal 210 include, for example, signals indicating various data stored in the storage unit 138 described later, signals controlled by the processing unit 136 described later and not stored in the storage unit 138, It includes signals that are controlled by the main control unit 40 and the sub control unit 50 of the printing apparatus 20 and that are not stored in the storage unit 138 . A clock terminal 220 is used to transmit a clock signal SCK from the printing device 20 to the device 130 . The power terminal 230 is used to supply the power supply voltage VDD from the printing apparatus 20 to the device 130 . A reset terminal 240 is used to transmit a reset signal RST from the printing apparatus 20 to the device 130 . The ground terminal 250 is grounded through a later-described device-side terminal 450 of the printing device 20 . The voltages supplied to data terminal 210 , clock terminal 220 , power terminal 230 , and reset terminal 240 are voltages acceptable to device 130 . The range of voltages supplied to each terminal 210-240 is equivalent, and in this embodiment is about 0V to about 3.3V. The voltage acceptable to the device 130 includes, for example, a voltage lower than the voltage used to drive the print head 5, a voltage about the same as the power supply voltage VDD, a voltage lower than the withstand voltage of the device 130, and a voltage lower than the withstand voltage of the device 130. A voltage that will not break down or cause device 130 to malfunction. Here, check terminals used for shipping inspection are not included in the terminals 290 of the present disclosure. A check terminal is a terminal that does not come into contact with the device-side terminal 490 of the printing device 20 when the liquid container 100 is attached to the printing device 20 . The check terminal does not form a contact portion cp, which will be described later.

As shown in FIG. 5, the terminals 210, 220, 230, 240, and 250 are connected to the plurality of device-side terminals 490 of the connection mechanism 400 of the printing device 20 when the liquid container 100 is attached to the container 4. Among them, the contact portions cp to be brought into contact with the corresponding device-side terminals 410, 420, 430, 440, and 450 are included. The contact portion cp of the data terminal 210 is also called a data contact portion cpd. The contact portion cp of the clock terminal 220 is also called the clock contact portion cpc. The contact portion cp of the power terminal 230 is also called a power contact portion cpvd. The contact portion cp of the reset terminal 240 is also called a reset contact portion cpr. The contact portion cp of the ground terminal 250 is also called the ground contact portion cpvs. The contact portion cp is a portion on each of the terminals 210, 220, 230, 240, 250 that should come into contact with the device-side terminals 410, 420, 430, 440, 450 when the liquid container 100 is attached to the container 4. This is an area of 1, and it is an area that can be recognized even by the liquid storage container 100 alone. On substrate 120 are data contacts cpd, clock contacts cpc, power contacts cpvd, reset contacts cpr, and ground contacts cpvs. The connection between the terminal 290 and the device-side terminal 490 of the printing device 20 will be described later. The terminals 290 and corresponding contact portions cp may be provided in addition to the terminals 210-250 described above.

Data terminal 210 is used to detect whether data terminal 210 is shorted to at least one of clock terminal 220 , power terminal 230 and reset terminal 240 . Specifically, the data terminal 210 is used to detect whether or not the data terminal 210 is short-circuited with at least one of the clock terminal 220, the power terminal 230, and the reset terminal 240, which will be described later. A data terminal 210 is used to detect whether or not the liquid container 100 is attached to the printing apparatus 20 . Specifically, the data terminal 210 is used to detect whether the liquid container 100 is in the mounting complete state described later or in the non-mounting complete state described later.

Below, the substrate 120 is viewed from above. As shown in FIG. 5, two orthogonal straight lines are defined as a first virtual line C1 and a second virtual line C2. In this embodiment, the first virtual line C1 is a line extending in the first direction FD, and the second virtual line C2 is a line extending in the second direction SD. In this embodiment, two orthogonal straight lines substantially along the surface 120fa of the base material 120bd are defined as a first virtual line C1 and a second virtual line C2.

Assume that all the contact portions cp of all the terminals 290 provided on the base material 120bd of the substrate 120 are projected onto the second imaginary line C2. In this embodiment, it is assumed that the data contact cpd, the clock contact cpc, the power contact cpvd, the reset contact cpr, and the ground contact cpvs are projected onto the second virtual line C2. Regarding the projection position of the contact part cp, let swd be the projection position of the data contact part cpd, swc be the projection position of the clock contact part cpc, swvd be the projection position of the power contact part cpvd, and swr be the projection position of the reset contact part cpr. and the projected position of the ground contact portion cpvs is swvs. Each projection position swd, swc, swvd, swr, swvs is an orthographic projection of each contact portion cpd, cpc, cpvd, cpr, cpvs perpendicularly to the second virtual line C2. At this time, all contact portions cp are projected to different positions. The data contact cpd, the clock contact cpc, the power contact cpvd, the reset contact cpr, and the ground contact cpvs are arranged such that their imaginary lines along the first imaginary line C1 passing through each contact cp overlap each other. They are arranged so that they are parallel without crossing each other. At this time, the first imaginary line C1 passes through the midpoint MP between the two most distant projected positions among the projected positions of all the contact portions cp. In this embodiment, among the projected positions swd, swc, swvd, and swr of the data contact portion cpd, the clock contact portion cpc, the power contact portion cpvd, and the reset contact portion cpr, A first imaginary line C1 passes through an intermediate point MP between the projected position of the contact portion placed at the position and the projected position swvs of the ground contact portion cpvs. In this embodiment, the first imaginary line C1 passes through the middle between the projected position swc of the clock contact portion cpc and the projected position swvs of the ground contact portion cpvs.

With respect to the first virtual line C1, one region of the base material 120bd of the substrate 120 is defined as a first region Rg1, and the other region of the base material 120bd of the substrate 120 is defined as a second region Rg2. In the present embodiment, the first region Rg1 is a region on the -X direction side, which is the negative direction of the second direction SD, relative to the first virtual line C1, and the second region Rg2 is a region in the second direction relative to the first virtual line C1. This is the area on the +X direction side, which is the positive direction of SD. The first region Rg1 is also one region of the substrate 120 sandwiching the first virtual line C1, and the second region Rg2 is also the other region of the substrate 120 sandwiching the first virtual line C1. Some contact portions cpa of all the contact portions cp are arranged in the first region Rg1, and the remaining contact portions cpb are arranged in the second region Rg2. Some of the contact portions cpa arranged in the first region Rg1 include a data contact portion cpd, a clock contact portion cpc, a power contact portion cpv, and a reset contact portion cpr. The remaining contact portions cpb arranged in the second region Rg2 include the ground contact portions cpvs. A clock contact cpc, a data contact cpd, a reset contact cpr, and a power contact cpvd are arranged on one side of the first virtual line C1, and a ground contact cpvs is arranged on the other side. are placed. Some of the contact portions cpa and the remaining contact portions cpb are arranged asymmetrically with respect to the first imaginary line C1. No contact portion cp is provided on the first virtual line C1.

The ground contact portion cpvs is arranged at the extreme end in the +X direction, which is the positive direction of the second direction SD, among the plurality of contact portions cp. Any one contact portion cp among the clock contact portion cpc, the data contact portion cpd, the power contact portion cpvd, and the reset contact portion cpr is in the negative direction of the second direction SD among the plurality of contact portions cp. − It is arranged at the extreme end in the X direction. Any one of the contact portions cp is located on the most one side in the second direction SD among the plurality of contact portions cp. The ground contact portion cpvs is located on the othermost side in the second direction SD among the plurality of contact portions cp. In the first region Rg1, of the contact portions cp excluding the ground contact portion cpvs, the contact portion cp projected on the second imaginary line C2 at a position farthest from the projection position swvs of the ground contact portion cpvs , the spacing in the direction along the second imaginary line C2 between the ground contact portions cpvs provided in the second region Rg2 is Wa. In this embodiment, the distance in the direction along the second imaginary line C2 between the projected position swc of the clock contact portion cpc and the projected position swvs of the ground contact portion cpvs is Wa. In this embodiment, the distance in the second direction SD between the clock contact cp and the ground contact cpvs is the distance Wa.

The data contact cpd, the clock contact cpc, the power contact cpvd and the reset contact cpr are preferably located away from the ground contact cpvs. For example, in the first region Rg1, among the contact portions cp excluding the ground contact portion cpvs, the contact portion cp projected at the position closest to the projection position swvs of the ground contact portion cpvs when projected onto the second virtual line C2. , and the ground contact portion cpvs provided in the second region Rg2 in the direction along the second virtual line C2 is Wa/2 or more. In the present embodiment, in the first region Rg1, among the contact portions cpd, cpvd, cpr, and cpvd excluding the ground contact portion cpvs, the reset contact portion cpr located on the positive direction side in the second direction SD and the second region Rg2 The spacing in the second direction SD between the ground contacts cpvs provided in is greater than or equal to Wa/2. For example, in the first region Rg1, among the contact portions cp excluding the ground contact portion cpvs, the contact portion cp projected at the position closest to the projection position swvs of the ground contact portion cpvs when projected onto the second virtual line C2. and the ground contact cpvs provided in the second region Rg2 there is no other contact cp connected to the device 130 via the terminal 290 . In the present embodiment, the reset contact portion cpr provided at the extreme end of the first region Rg1 on the +X direction side, which is the positive direction of the second direction SD, and the ground contact portion cpvs provided in the second region Rg2. In the area between there are no other contacts cp connected to the device 130 via terminals 290 . For example, the other contacts cpd, cpc, cpvd, cpr and the ground contact cpvs arranged on the substrate 120 are not provided on the first virtual line C1.

Between the projected position swd of the data contact portion cpd and the projected position swvs of the ground contact portion cpvs, the substrate 120 has at least one contact portion among the clock contact portion cpc, the power contact portion cpvd, and the reset contact portion cpr. cp is projected. Preferably, the substrate 120 has one of a clock contact cpc, a power contact cpvd, and a reset contact cpr between the projected position swd of the data contact cpd and the projected position swvs of the ground contact cpvs. Two or more contact portions cp are arranged to be projected. In this embodiment, the substrate 120 is arranged such that the power contact cpvd and the reset contact cpr are projected between the projected position swd of the data contact cpd and the projected position swvs of the ground contact cpvs. ing.

The data contact portion cpd is arranged on the substrate 120 so as to be projected between the projection positions of any two of the power contact portion cpvd, the reset contact portion cpr, and the clock contact portion cpc. . The data contact portion cpd does not become the contact portion projected at the end on the second virtual line C2. In this embodiment, the data contact cpd is arranged to be projected between the projected positions of the clock contact cpc and the power contact cpvd.

Either one or both of the data contact portion cpd and the reset contact portion cpr are projected on the substrate 120 between the projected position swvd of the power contact portion cpvd and the projected position swc of the clock contact portion cpc. ing. Further, the reset contact portion cpr is arranged so that its projected position swr is adjacent to the projected position swvd of the power contact portion cpvd. In this embodiment, the substrate 120 is arranged such that the data contact portion cpd is projected between the projected position swvd of the power contact portion cpvd and the projected position swc of the clock contact portion cpc. "Arranged next to each other" does not necessarily mean that one contact is closest to another contact. Other arrangements may be placed between one contact and another without departing from the scope of the present disclosure.

The power contact portion cpvd is arranged on the substrate 120 such that its projected position swvd is adjacent to the projected position swd of the data contact portion cpd.

In this embodiment, the clock contact cpc is arranged on the substrate 120 so as to be projected at a position farthest from the projected position swvs of the ground contact cpvs. Also, the data contact portion cpd, the power contact portion cpvd, and the reset contact portion cpr are projected in order from the projection position swc of the clock contact portion cpc on the second virtual line C2 toward the projection position swvs of the ground contact portion cpvs. are arranged as The clock contact portion cpc is located at the extreme end in the −X direction, which is the negative direction of the second direction SD. The contact portions cp other than the clock contact portion cpc are arranged in a data contact portion cpd, a power contact portion cpvd, and a reset contact portion cpr from the −X direction, which is the negative direction of the second direction SD, toward the +X direction, which is the positive direction SD. are arranged in order. The projection positions of the plurality of contact portions cp are arranged in the order of the clock contact portion cpc, the data contact portion cpd, the power contact portion cpvd, the reset contact portion cpr, and the ground contact portion cpvs from the -X direction to the +X direction. are arranged as

Clock contacts cpc, data contacts cpd, power contacts cpvd, reset contacts cpr and ground contacts cpvs are arranged to form a plurality of columns. The multiple columns are parallel to the second phantom line C2 and perpendicular to the first phantom line C1. In this embodiment, the plurality of contact portions cp are arranged to form two rows perpendicular to the first direction FD, and the directions of the two rows are parallel to the second direction SD. The direction in which the two columns are arranged is the direction along the first imaginary line C1, which is the direction along the first direction FD in the present embodiment. The two columns are called the first column R1 and the second column R2. A first row R1 is formed by a clock contact cpc, a power contact cpvd and a ground contact cpvs. A second row R2 is formed by a data contact cpd and a reset contact cpr. The data contact cpd and reset contact cpr forming the second row R2 and the clock contact cpc, power contact cpvd and ground contact cpvs forming the first row R1 are connected to each other by the first virtual contact cp. They are arranged alternately so as not to line up in the direction of the line C1, forming a so-called staggered arrangement. Two contact portions cp on the substrate 120bd that are projected next to each other when projected onto the second virtual line C2 form different rows. The data contacts cpd and the ground contacts cpvs are arranged in different columns. Between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs, any one of the clock contact portion cpc, the power contact portion cpvd, and the reset contact portion cpr is projected. are placed in In this embodiment, the reset contact portion cpr and the power contact portion cpvd are projected between the projected position swd of the data contact portion cpd and the projected position swvs of the ground contact portion cpvs. In this embodiment, the contact portions cp of the terminals 210 to 250 are arranged to form the first row R1 and the second row R2, but the arrangement is not limited to this. For example, the contact portions cp of each terminal 210-250 may be arranged to form three or four rows. A column can also be formed by one contact cp.

Let distance Dan be the distance between the ground contact cpvs and the reset contact cpr. Let Dbn be the distance between the data contact portion cpd and the clock contact portion cpc. Let Dcn be the distance between the data contact cpd and the ground contact cpvs. Let distance Ddn be the distance between the data contact portion cpd and the reset contact portion cpr. Let Den be the distance between the data contact cpd and the power contact cpvd. In this case, the distance Dcn is longer than the distance Dbn. Distance Dcn is longer than distance Den. Distance Dcn is longer than distance Ddn. In this embodiment, the distance Dbn and the distance Den are the same. The distances between the data contact portion cpd and the contact portion cp that is farthest from the data contact portion cpd among the plurality of contact portions cp excluding the ground contact portion cpvs are the distance Dbn and the distance Den. In this case, the distance Dan is longer than the distance Dbn and the distance Den.

A clock contact cpc, a reset contact cpr, and a power contact cpvd are adjacent to the data contact cpd to surround the data contact cpd between the data contact cpd and the ground contact cpvs. are placed. By arranging the data contact portion cpd inside a virtual circle Vcr passing through the clock contact portion cpc, the reset contact portion cpr, and the power contact portion cpvd, the clock contact portion cpc, the reset contact portion cpr, and the power supply A contact cpvd surrounds the data contact cpd.

A virtual line segment connecting the clock contact portion cpc and the data contact portion cpd is defined as a first line segment FL, a virtual line segment connecting the reset contact portion cpr and the data contact portion cpd is defined as a second line segment SL, and a power contact portion cpvd. and the data contact portion cpd is assumed to be a third line segment TL. Contact portions cp of other terminals 290 different from the clock contact portion cpc and the data contact portion cpd are not present on the first line segment FL. There is no contact portion cp of the terminal 290 other than the reset contact portion cpr and the data contact portion cpd on the second line segment SL. On the third line segment TL, there is no contact cp of the terminal 290 different from the power contact cpvd and the data contact cpd.

In this embodiment, the five terminals 210 to 250 also have the same positional relationship as the contact portions cpd, cpc, cpvd, cpr, and cpvs described above. That is, the data terminal 210, the clock terminal 220, the reset terminal 240, and the power terminal 230 are arranged in the first region Rg1. A ground terminal 250 is arranged in the second region Rg2. Other terminals 290 different from the clock terminal 220 and the data terminal 210 are not arranged on the first line segment FL. A terminal 290 different from the reset terminal 240 and the data terminal 210 is not arranged on the second line segment SL. A terminal 290 different from the power terminal 230 and the data terminal 210 is not arranged on the third line segment TL.

As described above, the data terminal 210 determines whether there is a short circuit between the data terminal 210, the clock terminal 220, the reset terminal 240, and the power terminal 250, and whether the liquid container 100 is attached to the printer 20. or not, and at least part of the arrangement of the contact portions cp in the present disclosure is designed to enable such detection.

As shown in FIG. 6, device 130 is configured to be mounted on substrate 120bd. Device 130 includes processing unit 136 . In this embodiment, device 130 includes processing unit 136 and storage unit 138 . The device 130 is molded (encapsulated) with a resin 139 . It should be noted that the device 130 may be mounted to the substrate 120bd in another manner.

The processing unit 136 is configured by, for example, a circuit. The processing unit 136 is connected to the terminals 210-250 and controls signals and voltages input/output to/from the terminals 210-250. The processing unit 136 may be a circuit having advanced arithmetic processing functions such as a CPU. Details of the processing unit 136 will be described later.

The storage unit 138 is configured by, for example, a non-volatile memory such as flash memory. The storage unit 138 stores information regarding the liquid container 100 . The information about the liquid container 100 includes, for example, the amount of ink consumed, the color of the ink, the manufacturing date of the liquid container 100, and the identification information of the liquid container 100 . In this embodiment, "1" to "4" are assigned as identification information to the liquid containers 100A to 100D, respectively.

The configuration of the carriage 30 and how the liquid container 100 is mounted on the carriage 30 will be described with reference to FIGS. 7A to 7C. 7A is a diagram showing how the liquid container 100 is attached to the carriage 30. FIG. FIG. 7B is a first view of the connection mechanism 400. FIG. FIG. 7C is a second view of the connection mechanism 400. FIG.

The carriage 30 includes an accommodation section 4 and a print head 5 . The storage section 4 is arranged above the print head 5 and is configured to allow attachment and detachment of a plurality of liquid storage containers 100 . A mounting chamber 65 in which the liquid containing container 100 is mounted is formed inside the containing portion 4 . In this embodiment, four mounting chambers 65 are provided corresponding to the number of liquid containers 100A to 100D. The print head 5 includes a plurality of nozzles and a plurality of piezoelectric elements, and ejects ink droplets from each nozzle according to the voltage applied to each piezoelectric element to form dots on the print medium PA. The storage section 4 is provided with a liquid introduction section 6 , a sub-control board 500 , and a connection mechanism 400 . The liquid introduction section 6 is arranged above the print head 5 in the normal usage posture of the printing system 1000 and introduces ink to the print head 5 from the liquid supply port 104op of the liquid container 100 . In this embodiment, four liquid introducing portions 6 are provided corresponding to the number of liquid containers 100A to 100D. A plurality of sub-control board terminals 510 , 520 , 530 , 540 , 550 and the sub-control section 50 are mounted on the sub-control board 500 . When using a plurality of sub-control board terminals 510, 520, 530, 540, 550 without distinction, reference numeral 590 is used. A plurality of sub control board terminals 590 are provided for each mounting chamber 65 . A plurality of sub-control board terminals 590 are electrically connected to the sub-control section 50 via wiring of the sub-control board 500 . The sub-controller 50 is configured as, for example, a carriage circuit, and performs control related to the liquid container 100 in cooperation with the main controller 40 shown in FIG.

The liquid storage container 100 is attached to the storage section 4 of the printing apparatus 20 by being inserted in the attachment direction MD. The liquid storage container 100 is removed from the storage section 4 by being pulled out in the direction opposite to the mounting direction MD. In this manner, the liquid container 100 is detachably attached to the printing apparatus 20 . When the liquid storage container 100 is attached to the storage section 4, the device 130 is electrically connected to the main control section 40 via the terminal 290, the connection mechanism 400, the sub-control board 500, and the bus 46 shown in FIG. Connected.

As shown in FIGS. 7B and 7C , the connection mechanism 400 includes a terminal holding portion 405 and a plurality of contact portion forming members 403 held by the terminal holding portion 405 . The connection mechanism 400 is provided for each of the liquid containers 100A to 100D, that is, for each mounting chamber 65. FIG. As shown in FIG. 7B, terminal holding portion 405 has a plurality of slits 301 . The contact portion forming member 403 has conductivity and elasticity. The contact portion forming member 403 is fitted into the slit 301 . In this embodiment, five contact portion forming members 403 are provided for each connection mechanism 400 , which is the same as the number of terminals 290 . As shown in FIG. 7B, when the five contact portion forming members 403 are used separately, the symbols "403A", "403B", "403C", "404D" and "404E" are used. In this embodiment, the nine slits 301 of the connection mechanism 400 are provided and arranged at regular intervals.

As shown in FIG. 7C, the contact portion forming member 403 is a member that electrically connects the terminal 290 and the sub-control board terminal 590 of the sub-control board 500 . A portion of the contact portion forming member 403 facing the mounting chamber 65 side forms a device-side terminal 490 . The device-side terminal 490 includes a contact portion dcp of the device-side terminal 490 to contact the terminal 290 . In the present embodiment, the device-side terminal 490 of the contact portion forming member 403 has a portion facing the mounting chamber 65 side most, that is, a portion protruding most toward the mounting chamber 65 side. 490 contact portions dcp are formed. The contact portion dcp of the device-side terminal 490 is not limited to this embodiment. For example, the terminal 290 may contact a portion of the device-side terminal 490 other than the portion that protrudes most toward the mounting chamber 65 . A portion of the contact portion forming member 403 protruding toward the sub-control board 500 forms a relay terminal 439 that contacts the sub-control board terminal 590 .

When the device-side terminals 490 are used separately, the symbols "410", "420", "430", "440" and "450" are used. When the relay terminals 439 are used separately, the symbols "431", "432", "433", "434" and "435" are used. The device-side terminal 410 and the relay terminal 431 are formed on the contact portion forming member 403A. The device-side terminal 420 and the relay terminal 432 are formed on the contact portion forming member 403B. The device-side terminal 430 and the relay terminal 433 are formed on the contact portion forming member 403C. The device-side terminal 440 and the relay terminal 434 are formed on the contact portion forming member 403D. The device-side terminal 450 and the relay terminal 435 are formed on the contact portion forming member 403E. The device-side terminal 410 is also called a device-side data terminal, the device-side terminal 420 is also called a device-side clock terminal, the device-side terminal 430 is also called a device-side power supply terminal, and the device-side terminal 440 is also called a device-side reset terminal. The terminal 450 is also called a device-side ground terminal.

The contact portion forming member 403A electrically connects the data terminal 210 and the sub-control board terminal 510 . The device-side terminal 410 contacts the data terminal 210 , and the relay terminal 431 contacts the sub-control board terminal 510 . The contact portion forming member 403B electrically connects the clock terminal 220 and the sub-control board terminal 520 . The device-side terminal 420 contacts the clock terminal 220 , and the relay terminal 432 contacts the sub-control board terminal 520 . The contact portion forming member 403</b>C electrically connects the power terminal 230 and the sub-control board terminal 530 . The device-side terminal 430 contacts the power terminal 230 , and the relay terminal 433 contacts the sub-control board terminal 530 . The contact portion forming member 403</b>D electrically connects the reset terminal 240 and the sub-control board terminal 540 . The device-side terminal 440 contacts the reset terminal 240 , and the relay terminal 434 contacts the sub-control board terminal 540 . The contact portion forming member 403E electrically connects the ground terminal 250 and the sub-control board terminal 550 . The device-side terminal 450 contacts the ground terminal 250 , and the relay terminal 435 contacts the sub-control board terminal 550 .

The terminals 210 , 220 , 230 , 240 , 250 are electrically connected by coming into contact with the device-side terminals 410 , 420 , 430 , 440 , 450 when the liquid container 100 is attached to the container 4 . Device-side terminals 410 , 420 , 430 , 440 , and 450 of connection mechanism 400 are electrically connected by coming into contact with sub-control board terminals 590 on sub-control board 500 . The sub-control board terminals 590 of the sub-control board 500 are electrically connected to the sub-control section 50 by wiring. Thereby, each terminal 210 , 220 , 230 , 240 , 250 is electrically connected to the sub-controller 50 .

Note that the positional relationship between each contact portion cp in the liquid container 100 and the positional relationship between each contact portion cp and other elements, such as the first virtual line C1, also apply to the contact portions dcp of the device-side terminals 410 to 450. The same applies. The arrangement of the contact portions cp in the liquid container 100 and the arrangement of the contact portions dcp of the device-side terminals 490 are in a mirror image relationship. As shown in FIG. 7B, the contact dcp of the device-side data terminal 410 is also called device-side data contact dcpd. The contact portion dcp of the device-side clock terminal 420 is also called a device-side clock contact portion dcpc. The contact portion dcp of the device-side power terminal 430 is also called a device-side power contact portion dcpvd. The contact portion dcp of the device-side reset terminal 440 is also called a device-side reset contact portion dcpr. The contact portion dcp of the device-side ground terminal 450 is also called a device-side ground contact portion dcpvs.

As shown in FIG. 7B, the connection mechanism 400 is viewed from above. Two orthogonal straight lines are defined as a first virtual line C1 and a second virtual line C2. In FIG. 7B, the first virtual line C1 is the direction along the first direction FD, and the second virtual line C2 is the direction along the second direction SD. In this embodiment, two orthogonal straight lines substantially along the surface of the terminal holding portion 405 are defined as a first virtual line C1 and a second virtual line C2.

Assume that the contact portions dcp of all device-side terminals of the connection mechanism 400 are projected onto the second imaginary line C2. In this embodiment, the device-side data contact dcpd corresponding to the data terminal 210 , the device-side clock contact dcpc corresponding to the clock terminal 220 , the device-side power contact dcpvd corresponding to the power terminal 230 , and the reset terminal 240 corresponding to Assume that the device-side reset contact portion dcpr and the device-side ground contact portion dcpvs corresponding to the ground terminal 250 are projected onto the second virtual line C2. Regarding the projected position of the contact portion dcp of the device-side terminal, let swd be the projected position of the device-side data contact portion dcpd, swc be the projected position of the device-side clock contact portion dcpc, and swvd be the projected position of the device-side power contact portion dcpvd. , the projected position of the device-side reset contact dcpr is swr, and the projected position of the device-side ground contact dcpvs is swvs. Each projected position swd, swc, swvd, swr, and swvs is an orthographic projection of the contact portion dcp of each device-side terminal perpendicularly to the second virtual line C2. At this time, the contact portions dcp of all device-side terminals are projected at different positions. The device-side data contact dcpd, the device-side clock contact dcpc, the device-side power contact dcpvd, the device-side reset contact dcpr, and the device-side ground contact dcpvs are projected to different positions. The device-side data contact dcpd, the device-side clock contact dcpc, the device-side power contact dcpvd, the device-side reset contact dcpr, and the device-side ground contact dcpvs are the first virtual contacts that pass through the contacts dcp of each device-side terminal. The imaginary lines along the line C1 are arranged parallel to each other without overlapping or intersecting each other. At this time, the first imaginary line C1 passes through the midpoint MP between the two most distant projected positions among the projected positions of the contact portions dcp of all the device-side terminals. In this embodiment, among the projected positions swd, swc, swvd, and swr of the device-side data contact dcpd, device-side clock contact dcpc, device-side power contact dcpvd, and device-side reset contact dcpr, the device-side ground contact The first imaginary line C1 passes through an intermediate MP between the projection position swvs of the contact portion dcpvs and the projection position swvs of the device-side ground contact portion dcpvs and the projection position swvs of the device-side ground contact portion dcpvs. In this embodiment, the first imaginary line C1 passes through the middle between the projection position swc of the device-side clock contact portion dcpc and the projection position swvs of the device-side ground contact portion dcpvs.

With respect to the first virtual line C1, one region of the connection mechanism 400 is defined as a first region Rg1, and the other region of the connection mechanism 400 is defined as a second region Rg2. In this case, the device-side terminals 410, 420, 430, and 440 are arranged in the first region Rg1, and the device-side terminal 450 is arranged in the second region Rg2. In the present embodiment, the first region Rg1 is a region on the −X direction side, which is the negative direction of the second direction SD, relative to the first virtual line C1, and the second region Rg2 is a region in the second direction relative to the first virtual line C1 . This is the area on the +X direction side, which is the positive direction of SD. The first region Rg1 is also one region of the connection mechanism 400 sandwiching the first virtual line C1, and the second region Rg2 is also the other region of the connection mechanism 400 sandwiching the first virtual line C1. Some of the contact portions dcpa of all the contact portions dcp of the device-side terminals are arranged in the first region Rg1, and the remaining contact portions dcpb are arranged in the second region Rg2. Some of the contact portions dcpa arranged in the first region Rg1 include a device-side data contact portion dcpd, a device-side clock contact portion dcpc, a device-side power contact portion dcpv, and a device-side reset contact portion dcpr. be The remaining contacts dcpb arranged in the second region Rg2 include the device-side ground contacts dcpvs. A device-side clock contact portion dcpc, a device-side data contact portion dcpd, a device-side reset contact portion dcpr, and a device-side power contact portion dcpvd are arranged on one side of the first virtual line C1. A device-side ground contact dcpvs is arranged on the side. Some of the contact portions dcpa and the remaining contact portions dcpb are arranged asymmetrically with respect to the first imaginary line C1. The contact portion dcp of the device-side terminal is not provided on the first imaginary line C1.

As shown in FIG. 7B, the device-side ground contact portion dcpvs is arranged at the extreme end in the +X direction, which is the positive direction of the second direction SD, among the contact portions dcp of the plurality of device-side terminals. The contact portion dcp of any one of the device-side clock contact portion dcpc, the device-side data contact portion dcpd, the device-side power contact portion dcpvd, and the device-side reset contact portion dcpr is the contact portion dcp of the plurality of device-side terminals. Among the contact portions dcp, it is arranged at the extreme end in the −X direction, which is the negative direction of the second direction SD. The contact portion dcp of any one of the device-side terminals is located on the most one side in the second direction SD among the contact portions dcp of the plurality of device-side terminals. The device-side ground contact portion dcpvs is positioned on the othermost side in the second direction SD among the contact portions dcp of the plurality of device-side terminals. In the first region Rg1, among the contact portions dcp of the device-side terminal excluding the device-side ground contact portion dcpvs, the contact portion dcp projected at the farthest position from the projection position swvs when projected onto the second imaginary line C2 , and the distance in the direction along the second imaginary line C2 between the device-side ground contact portions dcpvs provided in the second region Rg2 is Wa.

The device-side data contact dcpd, the device-side clock contact dcpc, the device-side power contact dcpd, and the device-side reset contact dcpr are preferably arranged away from the device-side ground terminal contact dcpvs. For example, in the first region Rg1, among the contact portions dcp of the device-side terminal 490 excluding the device-side ground contact portion dcpvs, when projected onto the second virtual line C2, it is projected at the position closest to the projection position swvs. The distance in the direction along the second imaginary line C2 between the contact portion dcp and the device-side ground contact portion dcpvs provided in the second region Rg2 is greater than or equal to Wa/2. For example, in the first region Rg1, among the contact portions dcp of the device-side terminals excluding the device-side ground contact portions dcpvs, the device-side ground contact portions projected on the second imaginary line C2 are closest to the projected position swvs. There is no contact portion dcp of another device-side terminal between the contact portion dcp of the terminal and the device-side ground contact portion dcpvs provided in the second region Rg2. In the present embodiment, the device-side reset contact portion dcpr provided at the end of the first region Rg1 in the +X direction, which is the positive direction of the second direction SD, and the device-side ground contact portion dcpr provided in the second region Rg2 Contact portions dcp of other device-side terminals do not exist in the region between the contact portions dcpvs. For example, the contact portions dcp of the device-side terminals 410 to 440 and the device-side ground contact portion dcpvs are not provided on the first virtual line C1.

Among the device-side clock contact dcpc, device-side power contact dcpvd, and device-side reset contact dcpr, between the projected position swd of the device-side data contact dcpd and the projected position swvs of the device-side ground contact dcpvs, , the contact portion dcp of at least one device-side terminal is projected. Preferably, between the projected position swd of the device-side data contact dcpd and the projected position swvs of the device-side ground contact dcpvs are the device-side clock contact dcpc, the device-side power contact dcpvd, and the device-side reset contact Among the dcpr, two or more contact portions dcp of the device-side terminals are arranged to be projected.

The device-side data terminal dcpd is projected between the projection positions of the contact portions dcp of any two of the device-side clock contact portion dcpc, the device-side power contact portion dcpvd, and the device-side reset contact portion dcpr. are arranged as The device-side data contact portion dcpd does not become the contact portion projected at the end on the second virtual line C2. In this embodiment, the device-side data contact portion dcpd is arranged to be projected between the projected positions of the device-side clock contact portion dcpc and the device-side power contact portion dcpvd.

Either or both of the device-side data contact portion dcpd and the device-side reset contact portion dcpr are projected between the projected position swvd of the device-side power contact portion dcpvd and the projected position swc of the device-side clock contact portion dcpc. are arranged as Further, the device-side reset contact portion dcpr is arranged so that its projected position swr is adjacent to the projected position swvd of the device-side power contact portion dcpvd. In this embodiment, the device-side data contact portion dcpd is projected between the projected position swvd of the device-side power contact portion dcpvd and the projected position swc of the device-side clock contact portion dcpc.

The device-side power contact portion dcpr is arranged so that its projected position swvd is adjacent to the projected position swd of the device-side data contact portion dcpd.

In this embodiment, the device-side clock contact portion dcpc is arranged so as to be projected at the farthest position from the projected position swvs of the device-side ground contact portion dcpvs. Further, the device-side data contact portion dcpd, the device-side power contact portion dcpvd, and the device-side reset contact portion dcpr are projected from the projection position swc of the device-side clock contact portion dcpc on the second virtual line C2 to the projection of the device-side ground contact portion dcpvs. They are arranged so that they are sequentially projected in the direction toward the position swvs. The device-side clock contact portion dcpc is positioned at the extreme end in the −X direction, which is the negative direction of the second direction SD. The contact portions dcp of the device-side terminals other than the device-side clock contact portion dcpc move from the −X direction , which is the negative direction of the second direction SD, toward the +X direction, which is the positive direction SD. The contact portion dcpvd and the device-side reset contact portion dcpr are arranged in this order. The contact portions dcp of the plurality of device-side terminals are arranged such that the projected positions of the device-side clock contact portions dcpc, the device-side data contact portions dcpd, the device-side power contact portions dcpvd, the device-side power contact portions dcpvd, and the device-side The reset contact dcpr and the device-side ground contact dcpvs are arranged in this order.

The device-side clock contact dcpc, the device-side data contact dcpd, the device-side power contact dcpvd, the device-side reset contact dcpr and the device-side ground contact dcpvs are arranged to form a plurality of columns. The multiple columns are parallel to the second phantom line C2 and perpendicular to the first phantom line C1. In this embodiment, the contact portions dcp of the plurality of device-side terminals are arranged so as to form two rows perpendicular to the first direction FD, and the directions of the two rows are parallel to the second direction SD. . The direction in which the two columns are arranged is the direction along the first imaginary line C1, which is the direction along the first direction FD in the present embodiment. The two columns are called the first column R1 and the second column R2. A first row R1 is formed by a device-side clock contact dcpc, a device-side power contact dcpvd and a device-side ground contact dcpvs. A second row R2 is formed by a device-side data contact dcpd and a device-side reset contact dcpr. The device-side data contact dcpd and the device-side reset contact dcpr forming the second row R2, and the device-side clock contact dcpc, the device-side power contact dcpvd and the device-side ground contact dcpvs forming the first row R1 are , are alternately arranged so that their contact portions dcp are not aligned in the direction of the first imaginary line C1, forming a so-called staggered arrangement. The contact portions dcp of two adjacent device-side terminals projected onto the second imaginary line C2 form different rows. The device-side data contacts dcpd and the device-side ground contacts dcpvs are arranged in different columns. Between the projected position swd of the device-side data contact portion dcpd and the projected position swvs of the device-side ground contact portion dcpvs, any one of the device-side clock contact portion dcpc, the device-side power contact portion dcpvd, and the device-side reset contact portion dcpr is present. It is arranged so that the contact portion dcp of the device-side terminal is projected. In this embodiment, the device-side reset contact portion dcpr and the device-side power contact portion dcpvd are projected between the projected position swd of the device-side data contact portion dcpd and the projected position swvs of the device-side ground contact portion dcpvs. are placed in In this embodiment, the contact portions dcp of the device-side terminals 410 to 450 are arranged to form the first row R1 and the second row R2, but the arrangement is not limited to this. For example, the contact portions dcp of the device-side terminals 410 to 450 may be arranged to form rows such as three rows or four rows. A row can also be formed by the contact portion dcp of one device-side terminal.

The distance between the device-side ground contact portion dcpvs and the device-side reset contact portion dcpr is defined as a distance DAn. Let DBn be the distance between the device-side data contact portion dcpd and the device-side clock contact portion dcpc. The distance between the device-side data contact portion dcpd and the device-side ground contact portion dcpvs is defined as a distance DCn. The distance between the device-side data contact portion dcpd and the device-side reset contact portion dcpr is defined as a distance DDn. Let DEn be the distance between the device-side data contact portion dcpd and the device-side power contact portion dcpvd. In this case, the distance DCn is longer than the distance DBn. Distance DCn is longer than distance DEn. Distance DCn is longer than distance DDn. In this embodiment, the distance DBn and the distance DEn are the same. The distance between the device-side data contact portion dcpd and the contact portion dcp of the device-side terminal furthest from the device-side data contact portion dcpd among the plurality of device-side terminal contact portions dcp excluding the device-side ground contact portion dcpvs is DBn and distance DEn. In this case, the distance DAn is longer than the distance DBn and the distance DEn.

A virtual line segment connecting the device-side clock contact portion dcpc and the device-side data contact portion dcpd is defined as a first line segment fL, and a virtual line segment connecting the device-side reset contact portion dcpr and the device-side data contact portion dcpd is defined as a second line. sL, and a virtual line segment connecting the device-side power supply contact portion dcpvd and the device-side data contact portion dcpd is a third line segment tL. A contact portion dcp of a device-side terminal different from the device-side clock contact portion dcpc and the device-side data contact portion dcpd does not exist on the first line segment fL. On the second line segment sL, there is no contact portion dcp of a device-side terminal different from the device-side reset contact portion dcpr and the device-side data contact portion dcpd. A device-side terminal contact portion dcp different from the device-side power contact portion dcpvd and the device-side data contact portion dcpd does not exist on the third line segment tL.

Data terminal 210 may also be referred to as a first terminal. The clock terminal 220 can also be called a second terminal included in other terminals. The reset terminal 240 can also be called a third terminal included in other terminals. The power terminal 230 can also be called a fourth terminal included in other terminals. The ground terminal 250 can also be called a fifth terminal included in other terminals. The data contact cpd can also be called the first contact. The clock contact cpc can also be called the second contact. The reset contact cpr can also be called the third contact. The power contact cpvd can also be called the fourth contact. The ground contact cpvs can also be called the fifth contact. Terminals other than the first terminal can also be called other terminal group. Terminals provided on the substrate 120 and the liquid container 100, such as the terminals 210 to 250, can also be called substrate-side terminals or container-side terminals.

The device-side terminal 410 can also be called a first device-side terminal. The device-side terminal 420 can also be called a second device-side terminal. The device-side terminal 430 can also be called a third device-side terminal. The device-side terminal 440 can also be called a fourth device-side terminal. The device-side terminal 450 can also be called a fifth device-side terminal. The projected position of the first device-side terminal 410 can be called a first projected position. The projected position of the second device-side terminal 420 can be called a second projected position. The projected position of the third device-side terminal 430 can be called a third projected position. The projected position of the fourth device-side terminal 440 can be called a fourth projected position. The projected position of the fifth device-side terminal 450 can be called a fifth projected position.

A2. Description of various states of the printing system:
In the present disclosure, the “attachment completion state” refers to a state in which the liquid container 100 is attached to the printing apparatus 20 and no short circuit has occurred between the terminals 290 . As described above, in the present disclosure, "the liquid container 100 is attached to the printer 20" means that the liquid container 100 is physically attached to the printer 20 and the contact portion cp of the terminal 290 is on the device side. It means to be electrically connected to the terminal 490 . The installation complete state is a state in which communication can be performed between the printing apparatus 20 and the device 130 . The “unmounted state” refers to a state in which the liquid container 100 is not mounted in the containing section 4 of the printing apparatus 20, or a state in which the liquid containing container 100 is attached to the containing section 4 of the printing apparatus 20, but the apparatus It refers to a state in which poor contact occurs between the side terminal 490 and the contact portion cp. “Short-circuit state” refers to a state in which the terminals 290 are short-circuited even though the liquid container 100 is attached to the housing section 4 of the printing apparatus 20 . For example, when the data terminal 210 and the clock terminal 220 are short-circuited, it is said that "the data terminal 210 and the clock terminal 220 are in a short-circuited state."

The "connected state" is any one of (i) attached state, (ii) non-attached state, and (iii) short-circuited state. “Determining the connected state” refers to determining which of the above-described states (i) to (iii) the liquid container 100 is in.

A3. Electrical and software configuration:
A3-1. Electrical configuration:
FIG. 8 is a diagram schematically showing the electrical configuration of the printing system 1000. As shown in FIG. In FIG. 8, when distinguishing the substrates 120 and devices 130 of the four liquid containers 100A, 100B, 100C, and 100D, the suffixes "A", "B", "C", and "D" are added. is doing. Identification information of the liquid containers 100A to 100D is stored in each of the devices 130A to 130D. For example, the devices 130A-130D store information about the liquids contained in the liquid containers 100A-100D. The identification information is represented by ID=1 to 4 in FIG. The main control section 40 and the sub-control section 50 constitute a control unit 39 that controls the operation of the printing device 20 .

The sub-controller 50 and the liquid containers 100A-100D are electrically connected by a plurality of lines. The multiple lines include reset line LRST, clock line LSCK, power line LVDD, data line LSDA, and ground line LVSS. A reset line LRST, a clock line LSCK, a power line LVDD, and a data line LSDA are provided independently for each of the liquid containers 100A to 100D. The ground line LVSS is provided commonly to the liquid containers 100A to 100D. For the reset line LRST, the clock line LSCK, the power supply line LVDD, and the data line LSDA, when distinguishing the lines electrically connected to the corresponding liquid containers 100A to 100D, "1" to " 4” attached. These "1" to "4" correspond to the identification information "1" to "4" of the liquid containers 100A to 100D.

In the sub control unit 50, the terminal for outputting the reset signal RST is the host terminal HRST, the terminal for outputting the clock signal SCK is the host terminal HSCK, the terminal for outputting the power supply voltage VDD is the host terminal HVDD, and the data signal SDA is output. and an input terminal is a host terminal HSDA. The host terminal HVSS is grounded. For the host terminals HSDA, HRST, HSCK, and HVDD, suffixes "1" to "4" are added when distinguishing the terminals connected to the corresponding liquid containers 100A to 100D. These "1" to "4" correspond to the identification information "1" to "4" of the liquid containers 100A to 100D. The sub-controller 50 and the main controller 40 are electrically connected via the bus 46 . The sub-controller 50 individually transmits various signals and voltages to the devices 130A-130D of the liquid containers 100A-100D via the connection bus 45 including lines LRST, LSCK, LVDD, LSDA, and LVSS.

Reset line LRST is a conductive line used by control unit 39 to send reset signal RST to device 130 . The reset signal RST is a signal that makes it possible to receive a request signal RS, which will be described later. When the reset signal RST sent by the control unit 39 to the device 130 changes from high level to low level, the portion of the processing unit 136 that receives the request signal RS is initialized, and the reset signal RST changes from low level to high level. As a result, a new request signal RS can be accepted. Clock line LSCK is a conductive line used by control unit 39 to send clock signal SCK to device 130 . The clock signal SCK is a signal in which a low level and a high level are alternately repeated at a predetermined cycle. Data line LSDA is a conductive line used to transmit and receive data signal SDA between control unit 39 and device 130 . Data signal SDA is transmitted and received synchronously with clock signal SCK for synchronization between control unit 39 and device 130 . For example, the data signal SDA is transmitted and received using the rise or fall of the clock signal SCK as a trigger. The reset signal RST, data signal SDA, and clock signal SCK are either high level or low level. In the following, the high level is also represented by the code "H" or "1", and the low level is also represented by the code "L" or "0". The host terminal HSDA connected to the data line LSDA is grounded via a pull-down resistor inside the sub-control section 50 . As a result, when the data signal SDA is not being transmitted/received between the sub-controller 50 and the device 130, the drive state of the host terminal HSDA of the sub-controller 50 is held at low level.

Ground line LVSS is a conductive line that defines the ground potential VSS of device 130 . The ground potential VSS is set to 0V, for example. The power supply line LVDD is a conductive line used by the control unit 39 to supply the device 130 with the power supply voltage VDD, which is the operating voltage. The power supply voltage VDD is a voltage higher than a predetermined threshold. In this embodiment, for the power supply voltage VDD, a potential of, for example, about 3.3 V is used with respect to the ground potential VSS. Note that the potential used for the power supply voltage VDD may have different values depending on the type of the device 130 .

FIG. 9 is a diagram showing the functional configuration of the printing device 20 together with one liquid container 100. As shown in FIG. The printing device 20 includes a display panel 495 , a power supply 441 , a main controller 40 and a sub controller 50 . The display panel 495 is used to notify the user of the operating state of the printing apparatus 20, errors in the liquid containers 100A to 100D, the amount of ink consumption stored in the device 130, the color of the ink, the date of manufacture, and the like. Used. When the liquid container 100 is in the mounting completion state, the display panel 495 displays, for example, a display to inform the user that the liquid container 100 has been mounted, a display to the effect that the printing system 1000 is ready for printing, and so on. , the remaining amount of ink contained in the liquid container 100, and the like are displayed. The display panel 495 is provided, for example, in the operation section 70 in FIG. A power supply 441 is a normal power supply used for logic circuits and rated at 3.3V. The voltage of the power supply 441 is supplied to the sub-controller 50 and, if necessary, to other circuits.

The main control unit 40 has a CPU 415 and a device-side first storage unit 416 . The CPU 415 controls the operation of the printing device 20 by executing various programs stored in the device-side first storage unit 416 . For example, the main controller 40 controls the operation of the display panel 495 and the operation of the sub-controller 50 . The CPU 415 functions as the determination unit 411 by executing various programs stored in the device-side first storage unit 416 . The determination unit 411 has an attachment determination unit 412 and a short circuit determination unit 414 . The attachment determination unit 412 determines whether or not the liquid container 100 is attached. The short circuit determination unit 414 determines whether or not a short circuit has occurred between the terminals 290 .
The sub control unit 50 includes a switching unit 511 and a device-side second storage unit 516 . The switching unit 511 includes a register (not shown) and an analog switch (not shown) connected to the register. When the CPU 415 writes "1" to the register, the analog switch becomes conductive. As a result, the CPU 415 and the substrate 120 are switched to a connected state. When the CPU 415 writes "0" to the register, the analog switch becomes non-conducting. As a result, the CPU 415 and the board 120 are switched to a state in which they are not connected.

The device-side second storage unit 516 stores determination information. The determination information is information used for the connection state determination process, which will be described later. The determination information is information that uses the voltage output from the data terminal 210 as a detection value in response to a request signal RS, which will be described later. The determination unit 411 reads determination information from the device-side second storage unit 516 when executing the connection state determination process.

The sub-controller 50 transmits a request signal RS to each of the devices 130A-130D of the liquid containers 100A-100D via the connection bus 45. FIG. The request signal RS is output from the host terminal HSDA of the sub-controller 50 and input to each data terminal 210 of the liquid containers 100A-100D. The request signal RS includes a command that enables identification of the liquid containers 100A to 100D to be responded to the request signal RS for each of the devices 130A to 130D. The determination unit 411 uses the voltage output from each data terminal 210 of the liquid containers 100A to 100D in response to the request signal RS to determine the connection state of the liquid containers 100A to 100D. Details of the request signal RS will be described later.

The processing unit 136 of the device 130 communicates with the printer 20 via the data line LSDA in synchronization with the clock signal SCK input from the printer 20 to the clock terminal 220 . For example, signals are transmitted and received using the rise or fall of the clock signal SCK as a trigger. The processing unit 136 controls signals and voltages input/output to/from the terminals 210-250. For example, it outputs the response signals FS and SS to the data terminal 210 via the data line LSDA in response to the request signal RS. Processing unit 136 includes a three-state buffer. The three-state buffer has three drive states: a low-level voltage output state, a high-level voltage output state, and a high impedance state. The three-state buffer is connected to data terminal 210 . Hence, in the present disclosure, the terms “low level”, “high level”, and “high impedance” are used to indicate the drive state of the data terminal 210 . The storage unit 138 is configured by a memory cell array in which a plurality of memory cells are arranged in a two-dimensional matrix. The processing unit 136 and the storage unit 138 are connected by bit lines and word lines. The processing unit 136 is electrically connected to the terminals 210 to 250 and the storage unit 138 .

A3-2. Overview of software configuration (connection status determination processing):
A connection state determination process executed by the printing system 1000 will be described with reference to FIGS. 10A and 10B. FIG. 10A is a flowchart of processing executed by the printing apparatus 20 in connection state determination processing. FIG. 10B is a flowchart of processing executed by the device 130 in connection state determination processing.

As shown in FIG. 10A, in connection state determination processing, the printing device 20 performs the following processing. In step S<b>301 , the sub-controller 50 transmits a request signal RS to the device 130 of the liquid container 100 . After that, the sub-controller 50 detects the voltage output from the data terminal 210 of the liquid container 100 . Specifically, in step S302, the sub-controller 50 detects the voltage output from the data terminal 210 of the liquid container 100 at a predetermined first timing t1. In step S303, the sub-controller 50 detects the voltage output from the data terminal 210 of the liquid container 100 at the predetermined second timing t2. In step S304, the sub-controller 50 detects the voltage output from the data terminal 210 of the liquid container 100 at a predetermined third timing t3. The first timing t1 to the third timing t3 are different timings. The voltages detected by the sub-controller 50 at the first timing t1 to the third timing t3 are stored in the device-side second storage unit 516 of the sub-controller 50 as detection values. In step S<b>305 , the determination unit 411 of the main control unit 40 reads the detection value from the device-side second storage unit 516 . In step S306, the main controller 40 determines the connection state based on the detection values detected by the sub controller 50 at the first timing t1 to the third timing t3.

As shown in FIG. 10B, in connection state determination processing, the device 130 performs the following processing. In step S<b>101 , the processing unit 136 of the device 130 determines whether or not a request signal RS has been input from the printer 20 to the data terminal 210 . If it is determined that the request signal RS has been input to the data terminal 210, the processing section 136 of the device 130 determines whether or not it is requested to respond to the printer 20 in step S102 . When determining that a response to the printer 20 is requested, the processing unit 136 of the device 130 outputs the first response signal FS to the data terminal 210 in step S103. After outputting the first response signal FS, the processing unit 136 of the device 130 outputs the second response signal SS to the data terminal 210 in step S104. The first response signal FS and the second response signal SS are output from the data terminal 210 to the printer 20 . If it is determined in step S102 that a response to the printing device 20 has not been requested, the processing section 136 of the device 130 ends the process.

Outlines and output timings of the request signal RS, the first response signal FS, and the second response signal SS will be described with reference to FIGS. 11A to 11D. 11A is a timing chart when the printer 20 outputs the request signal RS to the data terminal 210. FIG. 11B is a timing chart when the device 130 outputs the first response signal FS and the second response signal SS to the data terminal 210. FIG. FIG. 11C is a diagram showing details of the first response signal FS. FIG. 11D is a diagram showing details of the second response signal SS. The timing chart of FIG. 11B is executed subsequent to the timing chart of FIG. 11A. 11A-11D, "H" indicates that the signal is at high level, and "L" indicates that the signal is at low level. A dotted line indicates that the driving state of the terminal 290 is high impedance, indicating that no signal is output from the terminal 290 . The host terminal HSDA of the sub control section 50 is grounded through a pull-down resistor. Therefore, the control unit 39 cannot distinguish between the driving state of the terminal 290 being high impedance and no signal being output from the terminal 290 and the low level voltage being output from the terminal 290. However, if, for example, a pull-up resistor is used to connect the data terminal 210 and the power supply terminal 230, it can be confirmed that the driving state of the data terminal 290 is high impedance. VDD, RST, SCK, and SDA1-SDA4 shown in FIG. 11A, etc., refer to signals received and received or voltages supplied via corresponding terminals 290 by corresponding lines LVDD, LRST, LSCK, and LSDA1-LSDA4. do. Cycles D1 to D9 in the command period CMT, the first response period RT1, and the second response period RT2 represent unit periods in which the clock signal SCK alternates between low and high levels. The clock signal SCK in this unit period is called a "cycle".

The timing charts shown in FIGS. 11A and 11B are executed with predetermined timing as a trigger. The predetermined timing includes, for example, the timing at which the printing apparatus 20 is activated and the power source 441 is turned on, the timing at which the liquid container 100 is replaced, the timing at which an instruction is received from the user, and the timing at which the printing apparatus 20 performs printing. is not executed and the carriage 30 is positioned at the home position. An example of execution triggered by the timing when the power supply 441 is turned on will be described below.

As shown in FIG. 11A, the control unit 39 first brings the power supply voltage VDD to high level. The control unit 39 changes the reset signal RST from low level to high level after the lapse of a predetermined time after the power supply voltage VDD becomes high level. After setting the reset signal RST to high level, the control unit 39 transmits the clock signal SCK to the device 130 . After setting the reset signal RST to high level, the control unit 39 transmits the request signal RS to the device 130 . The request signal RS includes a first execution command BCC1, first identification data DB1, first parity data P1, second execution command BCC2, second identification data DB2, and second parity data P2.

The request signal RS will be explained in detail. After setting the reset signal RST to high level, the control unit 39 transmits the first execution command BCC1 to the devices 130A to 130D in cycles D1 and D2 of the command period CMT. The first execution command BCC1 is 2-bit data, and is a command indicating that the main control unit 40 executes the connection state determination process. The control unit 39 generates the first execution command BCC1 by setting the voltage to high level in cycle D1 and to low level in cycle D2.

After the first execution command BCC1, the control unit 39 transmits the first identification data DB1 to the devices 130A-130D in cycles D3-D8. The first identification data DB1 is 6-bit data and identifies the liquid container 100A-100D that requests a response. In the first identification data DB1, corresponding bits are assigned to each of the devices 130A-130D. The cycle D3, which is the first bit, and the cycle D4, which is the second bit, can be used when six liquid containers 100 are mounted on the printing apparatus 20 in another embodiment. In the first identification data DB1, the cycle D5 as the 3rd bit corresponds to the liquid container 100D, the cycle D6 as the 4th bit corresponds to the liquid container 100C, and the cycle D7 as the 5th bit corresponds to the liquid container. 100B, and the sixth bit, cycle D8, corresponds to the liquid storage container 100A. The first identification data DB1 transmitted to the device 130A of the liquid container 100A is high level in cycle D8, which is the sixth bit, and the remaining bits are low level. The first identification data DB1 transmitted to the device 130B of the liquid container 100B is at high level in cycle D7, which is the fifth bit, and the remaining bits are at low level. The first identification data DB1 transmitted to the device 130C of the liquid container 100C is at high level in cycle D6, which is the fourth bit, and the remaining bits are at low level. The first identification data DB1 transmitted to the device 130D of the liquid container 100D is high level in cycle D5, which is the third bit, and the remaining bits are low level. The request signal RS has a different waveform for each of the devices 130A-130D of the liquid containers 100A-100D.

Following first identification data DB1, control unit 39 transmits first parity data P1 to devices 130A-130D in cycle D9. The first parity data P1 is 1-bit data. In this embodiment, the first parity data P1 is odd parity.

After the first parity data P1, the control unit 39 sends a 2-bit second execution command BCC2 to the devices 130A-130D. The second execution command BCC2 is the same data as the first execution command BCC1 but not inverted. Following the second execution command BCC2, the control unit 39 sends 6-bit second identification data DB2 to the devices 130A-130D. The second identification data DB2 is the same data that is not inverted from the first identification data DB1. After the second identification data DB2, the control unit 39 transmits 1-bit second parity data P2 to the devices 130A-130D.

The first execution command BCC1, the first identification data DB1, and the first parity data P1 are collectively called a first command. The second execution command BCC2, the second identification data DB2, and the second parity data P2 are collectively called a second command. A period during which the control unit 39 transmits the first command to the device 130 in the command period CMT is also called a first command period. A period during which the control unit 39 transmits the second command to the device 130 in the command period CMT is also called a second command period. The first command and the second command are the same non-inverted data. In other embodiments, the first command and the second command may be inverted with respect to each other.

As described above, the device 130 first receives the power supply voltage VDD from the printing apparatus 20 to the power supply terminal 230 . After the power supply voltage VDD is input from the printer 20 to the power supply terminal 230 of the device 130 , the reset signal RST changes from the low reset voltage to the high reset voltage. is entered in After the high reset voltage is input to the reset terminal 240 of the device 130 from the printing apparatus 20 , the clock signal SCK is input to the clock terminal 220 from the printing apparatus 20 . After the high reset voltage is input to the reset terminal 240 from the printing device 20 , the device 130 receives the request signal RS from the printing device 20 to the data terminal 210 . Here, the power supply voltage VDD is a high-level voltage higher than the threshold. The reset signal RST is a signal including a low reset voltage as a low level and a high reset voltage as a high level higher than the low reset voltage. The low reset voltage is a voltage lower than the reference reset voltage as a threshold, and the high reset voltage is a voltage higher than the reference reset voltage as a threshold. The reference reset voltage is a voltage that serves as a reference for determining high level and low level. The clock signal SCK is a signal in which a low clock voltage as a low level and a high clock voltage as a high level higher than the low clock voltage are alternately repeated at a predetermined cycle. The low clock voltage is a voltage lower than the threshold reference clock voltage, and the high clock voltage is a voltage higher than the threshold reference clock voltage. The reference clock voltage is a voltage that serves as a reference for determining high level and low level. Each threshold is set, for example, between the potential of the power supply 441 and the ground potential.

As shown in FIG. 11B, after the request signal RS is sent from the control unit 39 to the device 130, the device 130 requested to respond to the printer 20 transmits the first response signal FS and the second response signal SS. Output to data terminal 210 . The first response signal FS and the second response signal SS indicate that the data terminal 210, the clock terminal 220, the power terminal 230, and the reset terminal 240 are not short-circuited, and that the liquid container 100 is attached to the printing apparatus 20. It is the signal used by printing device 20 to determine that the The request signal RS has a waveform that individually designates the liquid containers 100A to 100D in the first identification data DB1. The devices 130A to 130D output the first response signal FS and the second response signal SS to the data terminal 210 when receiving the request signal RS to which they are designated from the printing device 20 . The first response signal FS is output during the first response period RT1. The second response signal SS is output in the second response period RT2, which is the period following the first response period RT1.

In the first response period RT1, first, in cycles D1 and D2, a direction switching process of signals transmitted and received by the printing device 20 via the data line LSDA is executed. After transmitting the request signal RS to the device 130, the control unit 39 sets the potential of the data line LSDA to 0V in the cycle D1 to remove the charge of the data line LSDA. Thereafter, the control unit 39 sets the drive state of the host terminal HSDA of the sub-control section 50 to high impedance in cycle D2. As a result, the printer 20 becomes ready for signal input. On the other hand, after receiving the request signal RS in synchronization with the clock signal SCK, the processing unit 136 of the device 130 sets the driving state of each data terminal 210 to high impedance in the cycle D1. This is to prevent a signal from being output from the data terminal 210 while the data line LSDA is being discharged by the control unit 39 of the printing device 20 . The processing unit 136 of the device 130 similarly sets the driving state of the data terminal 210 to high impedance in the cycle D2. The first two bits of the first response period RT1 also function as dummy bits for making the number of bits of the request signal RS and the signal of the first response period RT1 the same. The number of cycles of the clock signal SCK forming the first response period RT1 is the same as the number of cycles of the clock signal SCK with which the request signal RS is synchronized.

Next, in cycles D5 to D8, the processing section 136 of each device 130 outputs the first response signal FS to the data terminal 210 at a predetermined timing. The first response signal FS is output from different processing units 136A to 136D for each cycle of the clock signal SCK. The first response signal FS includes a low level voltage. As shown in FIG. 11C, the first response signal FS is a signal output to the data terminal 210 while the clock signal SCK is at high level. The first response signal FS is at low level while the clock signal SCK is at high level. The processing unit 136 of the device 130 outputs a low level voltage to the data terminal 210 when the voltage input to the clock terminal 220 changes from low level to high level.

As described above, the first response signal FS includes a low first response voltage as a low level that is lower than the reference first response voltage as a threshold. The reference first response voltage is a voltage that serves as a reference for determining low level and high level, and is set, for example, between the voltage of the power supply 441 and the voltage of the ground potential.

As shown in FIG. 11B, the first timing t1 is set to the high level period of the clock signal SCK in each of cycles D5 to D8 of the first response period RT1. The first timing t1 is set to a period during which the first response signal FS is at low level. As shown in FIG. 11C, the device 130 outputs a low-level voltage to the data terminal 210 before the first timing t1 during the high-level period of the clock signal SCK in one cycle of the clock signal SCK. do.

As shown in FIG. 11B, the cycle D9 of the first response period RT1 functions as a dummy bit that makes the number of bits the same between the first command period and the first response period RT1.

In the second response period RT2, as shown in FIG. 11B, the control unit 39 sets the potential of the data line LSDA to 0V, thereby removing the electric charge from the data line LSDA. The processing unit 136 of the device 130 sets the drive state of the data terminal 210 to high impedance in the cycle D1. Also in cycle D2, the processing unit 136 of the device 130 sets the drive state of the data terminal 210 to high impedance. The first two bits of the second response period RT2 also function as dummy bits that make the number of bits of the request signal RS and the signal of the second response period RT2 the same. The number of cycles of the clock signal SCK forming the second response period RT2 is the same as the number of cycles of the clock signal SCK with which the request signal RS is synchronized.

Next, in cycles D5 to D8, the processing section 136 of each device 130 outputs the second response signal SS to the data terminal 210 at predetermined timing. The second response signal SS is output from different processing units 136A to 136D for each cycle of the clock signal SCK. The second response signal SS includes a low level voltage and a high level voltage. As shown in FIG. 11D , the waveform of the second response signal SS is in phase opposite to the waveform of the clock signal SCK input to the clock terminal 220 . The second response signal SS contains a high level while the clock signal SCK is at a low level, and contains a low level while the clock signal SCK is at a high level.

As described above, the second response signal SS includes a low second response voltage as a low level and a high second response voltage as a high level higher than the low second response voltage. The low second response voltage is a voltage lower than the reference second response voltage as the threshold, and the high second response voltage is a voltage higher than the reference second response voltage as the threshold. The reference second response voltage is a voltage that serves as a reference for determining low level and high level, and is set, for example, between the voltage of the power supply 441 and the voltage of the ground potential. The reference second response voltage may be the same as or different from the reference first response voltage. The waveform of the second response signal SS differs from the waveform of the first response signal FS.

As shown in FIG. 11B, the second timing t2 is set to the low level period of the clock signal SCK in each of the cycles D5 to D8 of the second response period RT2. The second timing t2 is set to a period during which the second response signal SS is at high level. The third timing t3 is set during the high level period of the clock signal SCK in each of the cycles D5 to D8 of the second response period RT2. The third timing t3 is set to a period during which the second response signal SS is at low level. As shown in FIG. 11D , the device 130 outputs a high-level voltage to the data terminal 210 before the second timing t2 during the period when the clock signal SCK is at low level in one period of the clock signal SCK. do. The device 130 outputs a low-level voltage to the data terminal 210 before the third timing t3 in a high-level period in one cycle of the clock signal SCK.

As shown in FIG. 11B, the cycle D9 of the second response period RT2 functions as dummy bit data that makes the number of bits the same between the second command period and the second response period RT2.

The output periods of the first response signal FS and the second response signal SS are different for each of the devices 130A-130D of the liquid containers 100A-100D. In this embodiment, the device 130 outputs the first response signal FS and the second response signal SS in one period of the clock signal SCK corresponding to the identification information. As shown in FIG. 11B, the liquid container 100A outputs the first response signal FS and the second response signal SS to the data terminal 210 in each cycle D8 of the first response period RT1 and the second response period RT2. The liquid container 100B outputs the first response signal FS and the second response signal SS to the data terminal 210 in each cycle D7 of the first response period RT1 and the second response period RT2. The liquid container 100C outputs the first response signal FS and the second response signal SS to the data terminal 210 in each cycle D6 of the first response period RT1 and the second response period RT2. The liquid container 100D outputs the first response signal FS and the second response signal SS to the data terminal 210 in each cycle D5 of the first response period RT1 and the second response period RT2.

As shown in FIG. 11B, when the clock signal SCK having a predetermined number of cycles is input to the clock terminal 220, the device 130 switches the drive state of the data terminal 210 from high impedance to low level to generate the first response signal. Output FS. For example, as shown in FIG. 11B, the device 130A changes the drive state of the data terminal 210 from high impedance to low level when the clock signal SCK is input to the clock terminal 220 in cycles D1 to D7 in the first response period RT1. , the first response signal FS is output. The device 130 ends the output of the first response signal FS by switching the drive state of the data terminal 210 from low level to high impedance. For example, as shown in FIG. 11B, the device 130A switches the drive state of the data terminal 210 to high impedance after outputting the first response signal FS in the cycle D8 in the first response period RT1, so that the first response signal End the output of FS.

As shown in FIG. 11B , when the clock signal SCK having a predetermined number of cycles is input to the clock terminal 220, the device 130 switches the drive state of the data terminal 210 from high impedance to high level, thereby causing the second response. Output signal SS. For example, as shown in FIG. 11B, the device 130A changes the driving state of the data terminal 210 from high impedance to high level when the clock signal SCK is input to the clock terminal 220 in cycles D1 to D7 in the second response period RT2. , the second response signal SS is output. The device 130 ends the output of the second response signal SS by switching the driving state of the data terminal 210 from low level to high impedance. For example, as shown in FIG. 11B, the device 130A switches the driving state of the data terminal 210 from low level to high impedance after outputting the second response signal SS in the cycle D8 in the second response period RT2. 2 End the output of the response signal SS.

As described above, the device 130 outputs the first response signal FS to the data terminal 210 after the request signal RS is input to the data terminal 210, and after outputting the first response signal FS, the second response signal SS is output to the data terminal 210 . Device 130 does the following when data terminal 210 and clock terminal 220, power terminal 230, and reset terminal 240 are not shorted. As shown in FIG. 11C, the device 130 outputs a low first response voltage as a first expected value at a predetermined first timing t1 during a period in which the voltage input to the clock terminal 220 is the high clock voltage. output to As shown in FIG. 11D , after outputting the low first response voltage, the device 130 outputs the high second response voltage as the second expected value at the second timing t2 when the voltage input to the clock terminal 220 is the low clock voltage. The response voltage is output to data terminal 210 . As shown in FIG. 11D, after outputting the high second response voltage, the device 130 outputs the low second response voltage as the third expected value at the third timing t3 when the voltage input to the clock terminal 220 is the high clock voltage. The response voltage is output to data terminal 210 .

The first response signal FS is configured at a low level. The low level of the first response signal FS indicates that the data terminal 210 and the terminals 220, 230, 240, 250 other than the data terminal 210 are not short-circuited. The second response signal SS is composed of a high level and a low level. A high level of the second response signal SS indicates that the liquid container 100 is attached to the printing apparatus 20 . The low level of the second response signal SS indicates that the data terminal 210 and the terminals 220, 230, 240, 250 other than the data terminal 210 are not short-circuited.

A3-3. Details of the software configuration (connection status determination process):
With reference to FIG. 12, connection state determination processing executed by the main control unit 40 will be described. FIG. 12 is a diagram showing an overview of connection state determination processing executed by the main control unit 40. As shown in FIG. As shown in FIG. 12, the main controller 40 determines the connection state using a combination of voltages output from the data terminals 210 of the liquid container 100 at the first timing t1 to the third timing t3. The first timing t1 to the third timing t3 are assigned to the periods of cycles D5 to D8 according to the liquid containers 100A to 100D, as described above with reference to FIG. 11B. The expected value of the voltage output from the data terminal 210 of the liquid container 100 at each of the first timing t1 to the third timing t3 is the voltage output from the data terminal 210 when the liquid container 100 is in the mounting complete state. , and becomes low level at the first timing t1, high level at the second timing t2, and low level at the third timing t3. In the first case where the voltage output from the data terminal 210 of the liquid container 100 is the same as the expected value, the determination unit 411 of the main control unit 40 determines that the liquid container 100 is in the attachment complete state and "Container present".

In the second case where the voltage output from the data terminal 210 of the liquid container 100 is at the low level at each of the first timing t1 to the third timing t3, the determination unit 411 of the main control unit 40 The container 100 is in a non-mounted state, and it is determined that there is no container.

In the third case where the voltage output from the data terminal 210 of the liquid container 100 is high level at the first timing t1, low level at the second timing t2, and high level at the third timing t3, the main control unit The determination unit 411 of 40 determines that the data terminal 210 and the clock terminal 220 are in a short-circuited state, and that there is a "short-circuit". If the data terminal 210 and the clock terminal 220 are shorted, the voltage of the data terminal 210 will be approximately the same as the voltage of the clock terminal 220 . 11B, the voltage output from the data terminal 210 of the liquid container 100 is high level at the first timing t1, low level at the second timing t2, and high level at the third timing t3. . As described above, when the data terminal 210 and the clock terminal 220 among the data terminal 210, the power supply terminal 230, the reset terminal 240, and the clock terminal 220 are short-circuited, at the first timing t1 to the third timing t3, the device The voltage output from the data terminal 210 connected to 130 to the control unit 39 of the printing device 20 is configured as follows. The voltage output from the data terminal 210 differs from the first expected value at the first timing t1, from the second expected value at the second timing t2, and from the third expected value at the third timing t3.

In the fourth case where the voltage output from the data terminal 210 of the liquid container 100 is at a high level at each of the first timing t1 to the third timing t3, the determining section 411 of the main control section 40 outputs the data terminal 210 and the power supply terminal 230 are short-circuited, or the data terminal 210 and the reset terminal 240 are short-circuited. When the data terminal 210 and the power terminal 230 are short-circuited, or when the data terminal 210 and the reset terminal 240 are short-circuited, the voltage of the data terminal 210 is the voltage of the power terminal 230 or the voltage of the reset terminal 240. to the same extent as As shown in FIG. 11B, during the first response period RT1 and the second response period RT2, the power supply terminal 230 and the reset terminal 240 are at high level, so the voltage output from the data terminal 210 of the liquid container 100 is It becomes high level at each of the first timing t1 to the third timing t3. In this way, among the data terminal 210, the power terminal 230, the reset terminal 240, and the clock terminal 220, when the data terminal 210 and the power terminal 230 are short-circuited, and when the data terminal 210 and the reset terminal 240 are short-circuited. The voltage output from the data terminal 210 connected to the device 130 to the control unit 39 of the printing apparatus 20 at the first timing t1 to the third timing t3, and at least one of the timings t1 to t3, is configured as follows. be. The voltage output from the data terminal 210 is different from the first expected value at the first timing t1, is the same as the second expected value at the second timing t2, and is different from the third expected value at the third timing t3.

As described above, the printer 20 first detects that the data terminal 210 and the terminals 220, 230, 240, and 250 other than the data terminal 210 are not short-circuited at the first timing t1. After that, it is detected that the liquid container 100 is attached to the printing apparatus 20 at the second timing t2. Furthermore, at the third timing t3, it is confirmed again that the data terminal 210 and the terminals 220, 230, 240, 250 other than the data terminal 210 are not short-circuited. By detecting the voltage output from the data terminal 210 at the first timing t1 to the third timing t3, it is confirmed that the liquid storage container 100 is in the mounting completion state. As will be described later, short circuits between data terminal 210 and other terminals 220 , 230, 240, and 250 may occur during first response period RT1 and second response period RT2. The data terminal 210 and the other terminals 220, 230, 240, 250 are not short-circuited at the first timing t1 before the second timing t2 and at the third timing t3 after the second timing t2. By detecting , it is confirmed with high accuracy that the liquid container 100 is in the completely attached state. In this way, the mounting detection mechanism of the liquid container 100 and the short circuit detection mechanism between the terminals 290 can be recognized as independent structures.

When printing device 20 detects that data terminal 210 and clock terminal 220 are not shorted, the voltage detected by printing device 20 when data terminal 210 and clock terminal 220 are shorted and the data terminal 210 and the voltage detected by the printing device 20 when the clock terminal 220 is not shorted must be distinguishable. One cycle of the clock signal SCK includes a low level period and a high level period. When the data terminal 210 and the clock terminal 220 are not short-circuited, the device 130 outputs the same voltage as the high level to the data terminal 210 during the low level period in one cycle. 220, the device 130 will output the same voltage as the high level. As a result, the printer 20 that has detected the output from the data terminal 210 cannot distinguish whether the data terminal 210 and the clock terminal 220 are short-circuited or whether the data terminal 210 and the clock terminal 220 are short-circuited. Gone. At the first timing t1 to the third timing t3, the device 130 outputs a voltage different from the voltage of the clock signal SCK to the data terminal 210, so that when the data terminal 210 and the clock terminal 220 are short-circuited, the printer 20 A distinction can be made between the voltage detected by the printing device and the voltage detected by the printing device when data terminal 210 and clock terminal 220 are not shorted. The same applies when the data terminal 210 and the power terminal 230 are short-circuited, and when the data terminal 210 and the reset terminal 240 are short-circuited.

A specific example of the connection state determination process will be described with reference to FIGS. 13A to 20B. In the following first to ninth specific examples, one liquid storage container 100A will be described as an example. In the second to ninth specific examples, the waveforms shown in FIGS. 13A to 20B schematically show examples of voltages of the terminal 290 that are actually observed. The control unit 39 recognizes the voltage output from the data terminal 210 as either high level or low level based on a predetermined threshold.

(First specific example)
In the first specific example, the case where the liquid storage container 100A is in the completely attached state will be described. FIG. 13A is a first timing chart of connection state determination processing. FIG. 13B is a second timing chart of the connection state determination process. As shown in FIG. 13A, the sub-controller 50 transmits the request signal RS to the device 130A of the liquid container 100A during the command period CMT. In the request signal RS transmitted to the device 130A, the bit of the cycle D8 becomes high level in order to specify the target liquid container 100A. As shown in FIG. 13B , in the attachment complete state, the sub-control unit 50 outputs a low level signal from the data terminal 210 at the first timing t1 of the cycle D8 in the first response period RT1, and a low level signal at the first timing t1 of the cycle D8 in the second response period RT2. The high level is detected at the second timing t2, and the low level is detected at the third timing t3 of the cycle D8 in the second response period RT2. In this case, since the expected value and the detected value are the same at each of the first timing t1 to the third timing t3, the determination unit 421 of the main control unit 40 determines that the liquid storage container 100A has "container present". do.

(Second example)
In the second specific example, a connection state determination process when a short circuit occurs between the data terminal 210 and the clock terminal 220 will be described. FIG. 14A is a third timing chart of the connection state determination process. FIG. 14B is a fourth timing chart of the connection state determination process. In FIG. 14A, it is assumed that a short circuit between the data terminal 210 and the clock terminal 220 of the liquid container 100A occurs at timing ta before the command period CMT. As shown in FIG. 14B, the change in voltage output from data terminal 210 is similar to the signal at clock terminal 220 . The sub control unit 50 outputs a high level signal from the data terminal 210 at the first timing t1 of the cycle D8 in the first response period RT1, a low level signal at the second timing t2 of the cycle D8 in the second response period RT2, and a second response period RT2. A high level is detected at the third timing t3 of the cycle D8 in . In this case, the data terminal 210 and the clock terminal 220 are short-circuited, and the determination unit 411 of the main control unit determines that there is a "short-circuit".

(Third specific example)
In the third specific example, processing for determining the connection state when a short circuit occurs between the data terminal 210 and the clock terminal 220 will be described. The third example differs from the second example in that the short circuit between the data terminal 210 and the clock terminal 220 occurs after the device 130 receives the request signal RS . FIG. 15 is a fifth timing chart of the connection state determination process. Assume that a short circuit between the data terminal 210 and the clock terminal 220 of the liquid container 100A occurs at the timing tb of the first response period RT1. In this case, the signal output from data terminal 210 is the same as the signal at clock terminal 220 . Therefore, the sub-control unit 50 outputs a high level at the first timing t1 of the cycle D8 in the first response period RT1 from the data terminal 210, a low level at the second timing t2 of the cycle D8 in the second response period RT2, and a second response A high level is detected at the third timing t3 of the cycle D8 in the period RT2. In this case, the data terminal 210 and the clock terminal 220 of the liquid container 100A are short-circuited, and the determination section 411 of the main control section 40 determines that there is a "short-circuit".

(Fourth specific example)
A fourth specific example describes the process of determining the connection state when a short circuit occurs between the data terminal 210 and the power terminal 230 . FIG. 16A is a sixth timing chart of the connection state determination process. FIG. 16B is a seventh timing chart of the connection state determination process. 16A and 16B, it is assumed that a short circuit between the data terminal 210 and the power terminal 230 of the liquid container 100A occurs at timing ta before the command period CMT. As shown in FIG. 16B, the change in voltage output from data terminal 210 is the same as the signal at power supply terminal 230 . The sub control unit 50 outputs a signal from the data terminal 210 to a high level at the first timing t1 of the cycle D8 in the first response period RT1, a high level at the second timing t2 of the cycle D8 in the second response period RT2, and a second response period RT2. A high level is detected at the third timing t3 of the cycle D8 in . In this case, the data terminal 210 and the power terminal 230 of the liquid container 100A are short-circuited, and the determination section 411 of the main control section 40 determines that there is a "short-circuit".

(Fifth example)
In the fifth specific example, a connection state determination process when a short circuit occurs between the data terminal 210 and the power terminal 230 will be described. The fifth specific example differs from the fourth specific example in that the short circuit between the data terminal 210 and the power terminal 230 occurs after the device 130 receives the request signal RS. FIG. 17 is an eighth timing chart of the connection state determination process. Assume that a short circuit between the data terminal 210 and the power terminal 230 of the liquid container 100A occurs at the timing tb of the first response period RT1. In this case, the signal output from the data terminal 210 is the same as the signal at the power terminal 230 . Therefore, the sub-control section 50 outputs a signal from the data terminal 210 to a high level at the first timing t1 of the cycle D8 in the first response period RT1, a high level at the second timing t2 of the cycle D8 in the second response period, and a second response period. A high level is detected at the third timing t3 of the cycle D8 in . In this case, the data terminal 210 and the power terminal 230 of the liquid container 100A are short-circuited, and the determination section 411 of the main control section 40 determines that there is a "short-circuit".

(Sixth example)
In the sixth specific example, a connection state determination process when a short circuit occurs between the data terminal 210 and the reset terminal 240 will be described. FIG. 18A is a ninth timing chart of the connection state determination process. FIG. 18B is a tenth timing chart of the connection state determination process. 18A and 18B, it is assumed that a short circuit between the data terminal 210 and the reset terminal 240 of the liquid container 100A occurs at timing ta before the command period CMT. As shown in FIG. 18B, the change in voltage output from data terminal 210 is the same as the signal at reset terminal 240 . Therefore, the sub control unit 50 outputs the data terminal 210 to the high level at the first timing t1 of the cycle D8 in the first response period, the high level at the second timing t2 of the cycle D8 in the second response period, and the A high level is detected at the third timing t3 of the cycle D8. In this case, the data terminal 210 and the reset terminal 240 of the liquid container 100A are short-circuited, and the determination section 411 of the main control section 40 determines that there is a "short-circuit".

(Seventh example)
In the seventh specific example, a connection state determination process when a short circuit occurs between the data terminal 210 and the reset terminal 240 will be described. The seventh specific example differs from the sixth specific example in that the short circuit between the data terminal 210 and the reset terminal 240 occurs after the device 130 receives the request signal RS. FIG. 19 is an eleventh timing chart of the connection state determination process. Assume that a short circuit between the data terminal 210 and the reset terminal 240 of the liquid container 100A occurs at the timing tb of the first response period RT1. In this case, the signal output from the data terminal 210 is the same as the signal at the reset terminal 240 . Therefore, the sub control unit 50 outputs the data terminal 210 to the high level at the first timing t1 of the cycle D8 in the first response period, the high level at the second timing t2 of the cycle D8 in the second response period, and the A high level is detected at the third timing t3 of the cycle D8. In this case, the data terminal 210 and the reset terminal 240 of the liquid container 100A are short-circuited, and the determination section 411 of the main control section 40 determines that there is a "short-circuit".

(Eighth example)
In the eighth specific example, the case where the liquid storage container 100A is in the non-mounting state will be described. Specifically, in the eighth specific example, the case where the liquid container 100A is removed from the container 4 before the device 130A receives the request signal RS will be described. FIG. 20A is a twelfth timing chart of the connection state determination process. When the liquid storage container 100A is not attached to the storage section 4, the driving state of the host terminal HSDA1 of the sub-control section 50 becomes low level due to the connected pull-down resistor. Therefore, the sub control unit 50 is low level at the first timing t1 of the cycle D8 in the first response period RT1, low level at the second timing t2 of the cycle D8 in the second response period RT2, and cycle D8 in the second response period RT2. A low level is detected at the third timing t3 of . In this case, the liquid storage container 100A is in the non-mounting completion state, and the determination unit 421 of the main control unit 40 determines that there is no container.

(9th specific example)
In the ninth specific example, the case where the liquid storage container 100A is removed from the storage section 4 during the first response period RT1 will be described. FIG. 20B is a thirteenth timing chart of the connection state determination process. The sub control unit 50 is low level at the first timing t1 of the cycle D8 in the first response period RT1, low level at the second timing t2 of the cycle D8 in the second response period RT2, and low level at the second timing t2 of the cycle D8 in the second response period RT2. 3 A low level is detected at timing t3. In this case, the liquid storage container 100A is in the non-mounting completion state, and the determination unit 421 of the main control unit 40 determines that there is no container.

(Other specific examples)
In other specific examples, various connection states and determination results by the determination unit 421 for each connection state will be described. FIG. 20C is a diagram illustrating another specific example of the connection state determination process. In the connection state determination process, if at least one of the detected values at the first timing t1 and the third timing t3 is different from the expected value, the determination unit 411 of the main control unit 40 determines that there is a "short circuit". .

No. In the case of 1, the data terminal 210 and the clock terminal 220 are short-circuited at the timing t before the first timing t1. In this case, the substrate 120 outputs a high-level voltage different from the first expected value at the first timing t1 to the printer 20 from the data terminal 210, and outputs a voltage different from the second expected value at the second timing t2. A low-level voltage is output, and at a third timing t3, a high-level voltage different from the third expected value is output. In this case, the determination unit 411 determines that there is a "short circuit".

No. In the case of 2, the data terminal 210 and the clock terminal 220 are short-circuited at timing t after the first timing t1 and before the second timing t2. In this case, the substrate 120 outputs a low level voltage that is the same as the first expected value from the data terminal 210 to the printer 20 at the first timing t1, and outputs a low level voltage that is different from the second expected value at the second timing t2. level voltage, and outputs a high-level voltage different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that there is a "short circuit".

No. In the case of 3, the data terminal 210 and the clock terminal 220 are short-circuited at the timing t after the second timing t2 and before the third timing t3. In this case, the substrate 120 outputs a low-level voltage that is the same as the first expected value at the first timing t1 to the printer 20 from the data terminal 210, and outputs a high-level voltage that is the same as the second expected value at the second timing t2. level voltage, and outputs a high-level voltage different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that there is a "short circuit".

No. In the case of 4, the short circuit between the data terminal 210 and the clock terminal 220 is eliminated at the timing t after the first timing t1 and before the second timing t2. In this case, the substrate 120 outputs a high-level voltage different from the first expected value at the first timing t1 to the printer 20 from the data terminal 210, and outputs a high-level voltage that is the same as the second expected value at the second timing t2. level voltage, and outputs the same low level voltage as the third expected value at the third timing t3. In this case, the determination unit 411 determines that there is a "short circuit".

No. In the case of 5, the short circuit between the data terminal 210 and the clock terminal 220 is eliminated at timing t after the second timing t2 and before the third timing t3. In this case, the substrate 120 outputs a high level voltage different from the first expected value to the printer 20 from the data terminal 210 at the first timing t1, and outputs a low level voltage different from the second expected value at the second timing t2. , and at the third timing t3, the same low-level voltage as the third expected value is output. In this case, the determination unit 411 determines that there is a "short circuit".

No. 6, at the timing t before the first timing t1, at least when the data terminal 210 and the power supply terminal 230 are short-circuited and when the data terminal 210 and the reset terminal 240 are short-circuited. One case. In this case, the substrate 120 outputs a high-level voltage different from the first expected value at the first timing t1 to the printer 20 from the data terminal 210, and outputs a high-level voltage that is the same as the second expected value at the second timing t2. , and outputs a high-level voltage different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that there is a "short circuit".

No. 7, when the data terminal 210 and the power supply terminal 230 are short-circuited or the data terminal 210 and the reset terminal 240 are short-circuited at the timing t after the first timing t1 and before the second timing t2. at least one. In this case, the substrate 120 outputs a low-level voltage that is the same as the first expected value at the first timing t1 to the printer 20 from the data terminal 210, and outputs a high-level voltage that is the same as the second expected value at the second timing t2. , and outputs a high-level voltage different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that there is a "short circuit".

No. In the case of 8, at the timing t after the second timing t2 and before the third timing t3, the data terminal 210 and the power supply terminal 230 are short-circuited, and the data terminal 210 and the reset terminal 240 are short-circuited. at least one. In this case, the substrate 120 outputs a low-level voltage that is the same as the first expected value at the first timing t1 to the printer 20 from the data terminal 210, and outputs a high-level voltage that is the same as the second expected value at the second timing t2. , and outputs a high-level voltage different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that there is a "short circuit".

No. In the case of 9, the short circuit between the data terminal 210 and the power supply terminal 230 was eliminated, and the short circuit between the data terminal 210 and the reset terminal 240 was eliminated at the timing t after the first timing t1 and before the second timing t2. is the case. In this case, the substrate 120 outputs a high-level voltage different from the first expected value at the first timing t1 to the printer 20 from the data terminal 210, and outputs a high-level voltage that is the same as the second expected value at the second timing t2. , and at the third timing t3, the same low-level voltage as the third expected value is output. In this case, the determination unit 411 determines that there is a "short circuit".

No. 10, at timing t after the second timing t2 and before the third timing t3, the short circuit between the data terminal 210 and the power supply terminal 230 was eliminated, and the short circuit between the data terminal 210 and the reset terminal 240 was eliminated. is the case. In this case, the substrate 120 outputs a high-level voltage different from the first expected value at the first timing t1 to the printer 20 from the data terminal 210, and outputs a high-level voltage that is the same as the second expected value at the second timing t2. , and at the third timing t3, the same low-level voltage as the third expected value is output. In this case, the determination unit 411 determines that there is a "short circuit".

A3-4. Other software configurations:
In the above-described first embodiment, when the device 130 receives the request signal RS and receives the second print instruction while the printing apparatus 20 is printing based on the first print instruction, the device 130 After printing is completed, the first response signal FS and the second response signal SS may be output to the data terminal 210 before printing based on the second print instruction is started. When the device 130 receives the request signal RS and the printing apparatus receives a cleaning instruction for the print head 5, the device 130 sends the first response signal FS and the second response signal SS to the data terminal before performing cleaning. 210. When the device 130 receives the request signal RS, the device 130 outputs the first response signal FS and the second response signal SS to the data terminal 210 at the replacement position where the carriage 30 can replace the liquid container 100, and further , the first response signal FS and the second response signal SS may be output to the data terminal 210 when the carriage 30 moves from the replacement position to the standby position where the liquid container 100 cannot be replaced. The replacement position is, for example, the position of the carriage 30 at the home position.

The first response signal FS can also be called the first signal. The second response signal SS can also be called a second signal. The low first response voltage can also be called a first low voltage. The high first response voltage can also be called a first high voltage. The low second response voltage can also be called a second low voltage. The high second response voltage can also be called a second high voltage. A low clock voltage can also be referred to as a low voltage. A high clock voltage can also be referred to as a high voltage. A low reset voltage can also be referred to as a low voltage. A high reset voltage can also be referred to as a high voltage.

A4. Other embodiments of the first embodiment:
A4-1. Alternative embodiment 1 for the substrate:
21A is a diagram illustrating a substrate as another embodiment 1. FIG. FIG. 21A shows a combination example of arrangement of a plurality of contact portions cp. The arrangement of the data contact portion cpd, the clock contact portion cpc, the power contact portion cpvd, the reset contact portion cpr, and the ground contact portion cpvs is not limited to that of the first embodiment. 1 to No. Other arrangements are possible, as shown at 24 . Combination no. 1 to No. In 24, the clock contact cpc, data contact cpd, power contact cpvd, and reset contact cpr are arranged in the first region Rg1, and the ground contact cpvs is arranged in the second region Rg2.

In the arrangement combinations of the contact portions cp, No. 1 to No. 18, between the projected position swd of the data contact cpd and the projected position swvs of the ground contact cpvs there is at least one contact cp among the clock contact cpc, the power contact cpvd and the reset contact cpr is projected. In the arrangement combinations of the contact portions cp, No. 1 to No. 12, between the projected position swd of the data contact cpd and the projected position swvs of the ground contact cpvs, any two or more of the clock contact cpc, the power contact cpvd, and the reset contact cpr It is arranged so that the contact portion cp is projected. In the arrangement combinations of the contact portions cp, No. 1 to No. 6 and no. 13 to No. At 18, the data contact cpd is arranged to be projected between the projected positions of any two of the power contact cpvd, the reset contact cpr and the clock contact cpc. In the arrangement combinations of the contact portions cp, No. 1, 3, 8, 11, 14, 15, 20, 23, either or both of data contact cpd and reset contact cpr are projected between power contact cpvd and clock contact cpc. , and the reset contact cpr is arranged such that its projected position swr is adjacent to the projected position swvd of the power contact cpvd. In the arrangement combinations of the contact portions cp, No. 1, 2, 6 to 8, 13, 14, 16, 23, and 24, the power contact portion cpvd is arranged so that its projected position swvd is adjacent to the projected position swd of the data contact portion cpd. In the arrangement combinations of the contact portions cp, No. 1, the clock contact cpc is arranged to be projected at a position furthest from the projected position swvs of the ground contact cpvs, and the data contact cpd, the power contact cpvd, and the reset contact cpr are arranged at the second They are arranged so that they are sequentially projected in the direction from the projected position swc of the clock contact cpc on the virtual line C2 toward the projected position swvs of the ground contact cpvs.

FIG. 21B shows No. 2 of FIG. 21A. 2 and no. 3 shows an arrangement example shown in FIG. The substrate 120b is No. 1 in FIG. 2, which differs from the substrate 120 shown in FIG. 5 in that the positional relationship between the clock contact portion cpc and the reset contact portion cpr is reversed. The substrate 120c is No. 1 in FIG. 21A . 3, and differs from the substrate 120 shown in FIG. 5 in that the positional relationship between the power contact portion cpvd and the reset contact portion cpr is switched.

The arrangement combination of the contact portions cp shown in FIG. 21A can be similarly applied to the arrangement combination of the data terminal 210, the clock terminal 220, the power terminal 230, the reset terminal 240, and the ground terminal 250. FIG. The arrangement combination of the contact portions cp shown in FIG. 21A can also be applied to the arrangement combination of the device-side terminals 490 .

In the first embodiment and FIGS. 21A and 21B, the ground contact portion cpvs is arranged in the second region Rg2, but contact portions other than the ground contact portion cpvs may be arranged in the second region Rg2. For example, the data contact cpd, the power contact cpvd , the reset contact cpr and the ground contact cpvs may be arranged in the first region Rg1 and the clock contact cpc may be arranged in the second region Rg2. For example, the data contact cpd , the clock contact cpc, the power contact cpvd and the ground contact cpvs may be arranged in the first region Rg1 and the reset contact cpr may be arranged in the second region Rg2. For example, the data contact cpd , the clock contact cpc, the reset contact cpr and the ground contact cpvs may be arranged in the first region Rg1 and the power contact cpvd may be arranged in the second region Rg2. For example, the clock contact cpc, the power contact cpvd, the reset contact cpr and the ground contact cpvs may be arranged in the first region Rg1 and the data contact cpd may be arranged in the second region Rg2. Also in these embodiments, the arrangement relationship between the contact portion cp arranged in the first region Rg1 and the contact portion cp arranged in the second region Rg2 is the same as in the first embodiment.

A4-2. Alternative embodiment 2 for the substrate:
FIG. 22 is a diagram showing two patterns of a substrate 120d and a substrate 120e as another embodiment 2. FIG. The arrangement of the ground contact portion 250 is not limited to that of the first embodiment, and other arrangements may be used. Substrate 120d differs from substrate 120 shown in FIG. 5 in the placement of ground contacts cpvs. The ground contacts cpvs of substrate 120d are arranged to form a second row R2. If substrate 120d is used, connection mechanism 400 shown in FIGS. The number of ground contact portions cpvs is not limited to that of the first embodiment, and may be two or more. Substrate 120e differs from substrate 120 shown in FIG. 5 in the number of ground contacts cpvs. The substrate 120e has two ground terminals 250a, 250b, each including a ground contact cpvs. When the board 120e is used, the connection mechanism 400 shown in FIGS. 7A and 7B has two device-side terminals corresponding to the two ground terminals 250a and 250b. The arrangement of data contacts cpd, clock contacts cpc, power contacts cpvd , and reset contacts cpr on substrate 120e is the same as substrate 120 shown in FIG. The ground contact portion cpvs of the ground terminal 250a and the ground contact portion cpvs of the ground terminal 250b are arranged at different positions in the direction along the first imaginary line C1. The ground contacts cpvs of one ground terminal 250a are arranged to form a second row R2. The ground contacts cpvs of the other ground terminal 250b are arranged to form a first row R1.

A4-3. Alternative embodiment 3 for the substrate:
FIG. 23 is a diagram showing two patterns of a substrate 120f and a substrate 120g as another embodiment 3. FIG. The size of the ground terminal 250 is not limited to that of the first embodiment, and may be other sizes. Ground terminal 250c of substrate 120f and ground terminal 250d of substrate 120g are larger than ground terminal 250 shown in FIG. The ground terminal 250c is formed across the first row R1 and the second row R2. The ground terminal 250c is arranged across the central portion CMP of the substrate 120f in the direction along the first imaginary line C1. A ground terminal 250d of the substrate 120g is further formed over the first region Rg1 and the second region Rg2. The ground terminal 250d is arranged across the first virtual line C1.

A4-4. Alternative embodiment 4 for the substrate:
FIG. 24 is a diagram showing two patterns of substrates 120ab and 120ac as another embodiment 4. FIG. FIG. 25 is a diagram showing two patterns of substrates 120ad and 120ae as another embodiment 4. FIG. The shapes of the terminals 210 to 250 are not limited to those of the first embodiment, and may be other shapes. As shown in FIG. 24, the terminals 210 to 250 of the substrate 120ab are formed across the first row R1 and the second row R2, and have an elongated shape along the first imaginary line C1. Terminals 210 to 250 of substrate 120ac have, in addition to rectangular portions like terminals 210 to 250 of substrate 120, elongated portions along first imaginary line C1. The data terminal 210 of the substrate 120ad has portions bent in directions along the first virtual line C1 and the second virtual line C2. The data terminal 210 of the substrate 120ae has a portion bent in the direction along the first virtual line C1 and the second virtual line C2 so as to surround part of the power terminal 230. FIG. Even in this way, the positional relationship between the contact portions cp of the terminals 210 to 250 is the same as the positional relationship between the contact portions cp shown in FIG. 5 of the first embodiment.

A4-5. Alternative embodiment 5 for the substrate:
FIG. 26 is a diagram illustrating a substrate 120Td as another embodiment 5. FIG. The upper diagram in FIG. 26 shows the substrate 120Td. The lower diagram in FIG. 26 schematically shows the connection mechanism 400Td corresponding to the substrate 120Td. In the substrate 120 according to the first embodiment, the plurality of contact portions cp are arranged to form two rows, but the present invention is not limited to this. On substrate 120Td, the contacts are arranged to form three rows. Data contacts cpd and ground contacts cpvs form a third column . In this way, even if the contact portions cp are arranged differently from the contact portions cp in the first embodiment in the direction along the first virtual line C1, the projection position onto the second virtual line C2 does not change. When the substrate 120Td is mounted in the direction of gravity, the clock contact portion cpc, the power contact portion cpvd, and the reset contact portion cpr of the substrate 120Td are located in the +Z direction, which is on the gravity direction side of the data contact portion cpd. placed on the side. At least one of the clock contact cpc, the power contact cpvd, and the reset contact cpr has a data contact cpd when the contact cp is projected onto the second imaginary line C2. and the projected position swvs of the ground contact portion cpvs. The contact portions cp other than the data contact portion cpd and the ground contact portion cpvs are also the same as the data contact portion cpd and the ground contact portion cpvs of the present embodiment, and the contact portion in the first embodiment in the direction along the first virtual line C1. It may be arranged at a position different from cp. The contact portions cp of the device-side terminal 490 have the same positional relationship as described above. When the substrate 120Td is mounted in the direction of gravity, the device-side clock contact portion dcpc, the device-side power contact portion dcpvd, and the device-side reset contact portion dcpr are located on the gravity direction side of the device-side data contact portion dcpd. is arranged on the +Z direction side. At least one contact portion dcpc, dcpvd, and dcpr among the device-side clock contact portion dcpc, the device-side power contact portion dcpvd, and the device-side reset contact portion dcpr is projected onto the second imaginary line C2. are arranged so as to be projected between the projected position swd of the device-side data contact portion dcpd and the projected position swvs of the device-side ground contact portion dcpvs.

A4-6. Alternative embodiment 6 for the substrate:
FIG. 27 is a diagram showing two patterns of substrates 120U and 120V as another embodiment 6 of the substrate. The form of the base material 120bd of the substrate 120 is not limited to that of the first embodiment. The substrate 120U is commonly used for the four liquid containers 100A-100D. In this case, the four liquid storage containers 100A-100D may be integrally formed. The substrate 120U includes a first substrate area 120UA, a second substrate area 120UB, a third substrate area 120UC, and a fourth substrate area 120UD. The first substrate area 120UA is an area used for the liquid container 100A and in which the terminals 290 are arranged. The second substrate area 120UB is an area where the terminals 290 used for the liquid container 100B are arranged. The third substrate area 120UC is an area where terminals 290 used for the liquid container 100C are arranged. The fourth substrate area 120UD is an area where terminals 290 used for the liquid container 100D are arranged. The first substrate area 120UA to the fourth substrate area 120UD may be regarded as independent substrates. Four devices 130A to 130D used for the four liquid containers 100A to 100D are provided on the back surface 120fb of the substrate 120U. The terminals 290 of the substrate regions 120UA-120UD are connected to the corresponding devices 130A-130D via wiring pattern layers (not shown) and through holes arranged in the substrate 120U. A power supply voltage VDD is supplied to each of the devices 130A to 130D via a common power supply terminal 230. FIG. In this embodiment, the common power terminal 230 is provided at the terminal 290 of the first substrate area 120UA. Therefore, in the substrate 120U, the power terminals 230 are not provided at the terminals 290 of the second substrate region 120UB to the fourth substrate region 120UD. As described above, some of terminals 290 may be used in common for multiple devices 130A-130D.

In the first embodiment, the base material 120bd of the substrate 120 is composed of a single member, but it is not limited to this and may be composed of a plurality of base materials. In substrate 120V, device 130 and terminals 290 are located on separate substrates 124a, 124b rather than on a single substrate. The substrate 120V has a first base material 124a and a second base material 124b. The first base material 124a and the second base material 124b are electrically connected by a conductive line EL or the like. The materials of the first base material 124a and the second base material 124b are different. The first base material 124a is, for example, a rigid base material, and the second base material 124b is a sheet-like base material. The device 130 is molded with a resin 139 on the front surface 120faa of the first base material 124a. A terminal 290 is arranged on the front surface 120fab of the second base material 124b.

A4-7. Alternative Substrate Embodiment 7:
FIG. 28 is a diagram showing a substrate 120X of another embodiment 7 regarding the substrate. In the first embodiment, as shown in FIG. 5, there are five types of terminals 290: data terminal 210, clock terminal 220, power supply terminal 230, reset terminal 240, and ground terminal 250. It may be less than 5 types. For example, substrate 120X has data terminals 210, clock terminals 220, power terminals 230, and ground terminals 250. FIG. The substrate 120X does not have the reset terminal 240. FIG. In this case, the reset signal RST is generated using the clock signal SCK in the processing section 136 of the device 130, for example. For example, the power terminal 230 may not be provided on the substrate 120X. In this case, the power supply voltage VDD is generated using the clock signal SCK in the processing unit 136 of the device 130, for example. For example, the power supply terminal 230 may be provided on the substrate 120X and the reset terminal 240 may not be provided. Thus, the terminal 290 of the first embodiment does not have to include at least one of the reset terminal 240 and the power terminal 230 . In the case of this embodiment, among the terminals 290 of the substrate 120, the terminals 290 other than the ground terminal 250 are called "other terminal group". In this embodiment, the ground terminal 250 can also be called a first terminal. Data terminal 210 can also be referred to as a second terminal. Clock terminal 220 can also be referred to as a third terminal. The ground contact cpvs can also be called the first contact. The data contact cpd can also be called a second contact. The clock contact cpc can also be called the third contact.

A4-8. Alternative Substrate Embodiment 8:
In the embodiment of the present disclosure, the arrangement of the terminals 290 and the contact portions cp may be interchanged across the first imaginary line C1. The terminals forming the first row and the terminals forming the second row may be interchanged.

A4-9. Another Embodiment 1 of the Liquid Containing Container:
The liquid storage container of the present disclosure is not limited to the liquid storage container 100 shown in FIG. 3, and may have other configurations. Other embodiments of the liquid storage container 100 will be described below. The same reference numerals are assigned to the same configurations of the liquid storage container 100 of the first embodiment shown in FIGS. 3 and 4 and the other embodiments of the liquid storage container, and the description thereof will be omitted as appropriate. Note that the configuration of the printing device 20, such as the storage section 4 shown in FIG. 4, is changed in accordance with the configuration of the liquid storage container.

FIG. 29 is a perspective view showing a liquid container 100p as another embodiment 1 of the liquid container. The liquid container 100 p includes a liquid container 101 , a liquid supply section 104 having a liquid supply port 104 op, and a substrate 120 . The liquid container 101 forms an ink chamber 150 that contains ink therein. The liquid supply part 104 is formed on the bottom wall 101wb and communicates with the ink chamber 150 . The substrate 120 is provided at a corner portion 89 where the third wall 101wb and the second wall 101wr of the liquid container 101 intersect. After engaging the protruding second container engaging portion 320 of the first wall 101wf with the concave portion of the containing portion 4, the liquid containing container 100p is moved around the second container engaging portion 320 as a fulcrum. is rotated in the rotational mounting direction RD to be mounted on the housing portion 4 . In the mounting completion state, the projecting first container engaging portion 310 of the second wall 101wr engages with the lever of the housing portion 4 . In this embodiment, the mounting direction MD includes +Z direction and -Y direction components, and the first direction FD includes both positive and negative Z direction components and both positive and negative Y direction components.

A4-10. Another Embodiment 2 of the Liquid Containing Container:
FIG. 30 is a perspective view showing a liquid container 100q as another embodiment 2 of the liquid container. FIG. 31 is an enlarged view around the substrate 120 of the liquid container 100q. As shown in FIG. 30, the liquid container 100q includes a liquid container 101, a liquid supply section 104 having a liquid supply port 104op, and a substrate 120. As shown in FIG. A liquid containing bag (not shown) containing ink is arranged inside the liquid container 101 . The liquid containing bag is flexible and functions as the ink chamber 150 . The liquid supply part 104 is provided in the liquid storage bag and arranged in the opening 424 formed in the front wall 101wf of the liquid storage body 101 . The substrate 120 is provided at a corner portion 89a where the second wall 101wr and the fourth wall 101wu of the liquid container 101 intersect. The corner portion 89a is a concave portion recessed inward of the liquid container 101. As shown in FIG. In this embodiment, the mounting direction MD is the -Y direction, and the first direction FD includes both positive and negative components in the Y direction and both positive and negative components in the Z direction.

A4-11. Alternative Embodiment 3 of the Liquid Containing Container:
FIG. 32 is a perspective view showing a liquid container 100r as another embodiment 3 of the liquid container. The -Y direction of the liquid storage container 100r is the mounting direction MD. The liquid container 100 r includes a liquid container 101 , a liquid supply section 104 having a liquid supply port 104 op, and a substrate 120 . A liquid containing bag (not shown) containing ink is arranged inside the liquid container 101 . This liquid containing bag has flexibility and functions as the ink chamber 150 . The liquid supply part 104 is provided in the liquid containing bag and arranged in the opening 424 formed in the second wall 101wr of the liquid container 101 . The substrate 120 is provided at a corner portion 89a where the second wall 101wr and the fourth wall 101wu of the liquid container 101 intersect. The corner portion 89a is a concave portion recessed inward of the liquid container 101. As shown in FIG. A groove-shaped container-side engagement structure 425 is formed on the third wall 101wb of the liquid container 101 . The container-side engaging structure 425 engages with the protruded device-side engaging structure of the housing portion 4 in the state where the liquid container 100r is completely attached, so that the liquid container 100 is removed in the +Y direction. regulate movement. In this embodiment, the mounting direction MD is the -Y direction, and the first direction FD includes both positive and negative components in the Y direction and both positive and negative components in the Z direction.

A4-12. Alternative Embodiment 4 of the Liquid Containing Container:
FIG. 33 is a perspective view showing a liquid container 100s as another embodiment 4 of the liquid container. The liquid storage container 100 s is detachably housed in a case 61 provided in the printer 20 so that it can be pulled out, and then attached to the printer 20 together with the case 61 . The liquid storage container 100s has a liquid storage bag 111 and a connection member 112 attached to one end of the liquid storage bag 111 on the -Y direction side. In this embodiment, the liquid containing bag 111 and the connection member 112 function as a liquid container. The liquid containing bag 111 has flexibility. A liquid supply portion 104 having a liquid supply port 104op is provided on the −Y direction side of the liquid containing bag 111 functioning as the ink chamber 150 . The liquid supply part 104 is arranged in an opening 424 formed in the second wall 101wr of the connecting member 112 . The substrate 120 is arranged in a corner portion 89a which is a concave portion formed in the second wall 101wr of the connecting member 112 . In this embodiment, the mounting direction MD is the -Y direction, and the first direction FD includes both positive and negative components in the Y direction and both positive and negative components in the Z direction.

A4-13. Another Embodiment 5 of the Liquid Containing Container:
FIG. 34 is a perspective view showing a liquid container 100w as another embodiment 5 of the liquid container. In the liquid storage container 100w, the substrate 120 is arranged on the fourth wall 101wu, which is a horizontal surface, in the completely mounted state. The fourth wall 101wu constitutes an upper wall in the fully installed state. Like the liquid container 100 shown in FIGS. 3 and 4, the liquid container 100w includes a liquid container 101 and a liquid supply section 104 having a liquid supply port 104op. Inside the liquid container 101, a flexible liquid containing bag (not shown) for containing ink is arranged. This liquid containing bag functions as the ink chamber 150 . The liquid supply part 104 is provided in the liquid containing bag and arranged in the opening 424 formed in the second wall 101wr of the liquid container 101 . In this embodiment, the mounting direction MD is the -Y direction, and the first direction FD is both positive and negative of the Y direction.

A4-14. Alternative Embodiment 6 of the Liquid Containment Container:
FIG. 35 is a perspective view showing a liquid container 100x as another embodiment 6 of the liquid container. In the liquid storage container 100x, the substrate 120 is arranged on the fifth wall 101wsa, which is a vertical surface, in the completely mounted state. The fifth wall 101wsa constitutes a side wall in the completed mounting state. Like the liquid container 100 shown in FIGS. 3 and 4, the liquid container 100x includes a liquid container 101 and a liquid supply section 104 having a liquid supply port 104op. Inside the liquid container 101, a flexible liquid containing bag (not shown) for containing ink is arranged. This liquid containing bag functions as the ink chamber 150 . The liquid supply part 104 is provided in the liquid storage bag and arranged in the opening 424 formed in the second wall 101wr of the liquid storage body 101 . In this embodiment, the mounting direction MD is the -Y direction, and the first direction FD is both positive and negative of the Y direction.

A4-15. Alternative Embodiment 7 of Liquid Containment Container:
FIG. 36 is a diagram showing a liquid container 100y as another embodiment 7 of the liquid container. As shown in FIGS. 3 and 4, the liquid container 100 of the first embodiment has the liquid container 101 and the substrate 120 integrally formed, but the present invention is not limited to this. For example, the liquid container 100y has a liquid container 101ya forming the ink chamber 150 and an adapter 101yb to which the substrate 120 is attached. The liquid supply part 104 is formed in the liquid container 101ya. The liquid container 101ya is removably accommodated in the concave adapter 101yb. The adapter 101yb functions as a case that accommodates the liquid container 101ya. An opening 134 through which the liquid supply portion 104 is inserted is formed in the third wall 101wb of the adapter 101yb. The liquid container 101ya may be fixed to the adapter 101yb using a fixing member (not shown). The liquid container 101ya does not have to be fixed to the adapter 101yb.

A4-16. Alternative Embodiment 8 of Liquid Containment Container:
FIG. 37 is a diagram showing liquid containers 100g and 100h as another embodiment 8 of the liquid container. In the liquid storage container 100 of the first embodiment, as shown in FIGS. 4 to 6, a plurality of terminals 290 and devices 130 are arranged on the base material 120bd, but the present invention is not limited to this. In the liquid container 100g, the plurality of terminals 290 and the device 130 are arranged directly on the second wall 101wr of the liquid container 101 without interposing the base material 120bd. The plurality of terminals 290 and the device 130 are electrically connected by a wiring pattern (not shown) or the like. In this manner, the liquid container 101, the plurality of terminals 290, and the device 130 may be integrally configured as the liquid container 100g.

In the liquid container 100h, the plurality of terminals 290 are arranged directly on the second wall 101wr of the liquid container 101 without interposing the base material 120bd. The device 130 is arranged on the mounting base material 120h, and is arranged on the second wall 101wr of the liquid container 101 via the mounting base material 120h. The plurality of terminals 290 and the device 130 are electrically connected by a wiring pattern (not shown) or the like. In this manner, the liquid container 101 and the plurality of terminals 290 may be configured integrally as the liquid container 100h, and the device 130 may be configured separately.

A4-17. Alternative Embodiment 9 of Liquid Containment Container:
FIG. 38 is a perspective view showing a liquid container 100z as another embodiment 9 of the liquid container. FIG. 39 is an enlarged view around the substrate 120 of the liquid container 100z. The XYZ axes shown in the drawings of the ninth embodiment are based on the state when the liquid storage container 100z is completely inserted into the storage section of the printing apparatus, which will be described later. When the liquid storage container 100z is attached to the printing apparatus, two attachment operations are performed. In this embodiment, the first direction FD has a Y direction component and a Z direction component, and the second direction SD is the X direction. As shown in FIG. 38, the liquid container 100z includes a liquid container 101z, a liquid supply section 104 having a liquid supply port 104op, and a substrate 120. As shown in FIG. The liquid container 101z has a container body 101za capable of containing liquid, and a cover member 101zb attached to the container body 101za. The liquid supply part 104 is arranged in an opening 424 formed in the third wall 101wb of the liquid container 101z formed by the cover member 101zb. The substrate 120 is provided at a corner portion 89z where the second wall 101wr and the third wall 101wb of the liquid container 101z intersect. The corner portion 89z is a recess recessed inward of the liquid container 101z.

As shown in FIG. 39, the board 120 is oriented differently from that shown in FIG. 5, and the data terminal 210 and the reset terminal 240 are located on the -Z direction side relative to the clock terminal 220, the power terminal 230, and the ground terminal 250. As shown in FIG.

FIG. 40 is a first diagram for explaining the process of mounting the liquid storage container 100z to the storage section 4z of the printing apparatus. FIG. 41 is a second diagram illustrating the process of mounting the liquid storage container 100z to the storage section 4z of the printing apparatus. FIG. 42 is a diagram showing a state in which the liquid storage container 100z has been completely attached. The accommodation section 4z is arranged at a location different from the print head (not shown). The containing portion 4z and the print head are communicated with each other through a liquid flow pipe (not shown). The liquid in the liquid storage container 100z attached to the storage portion 4z is supplied to the print head through the liquid circulation pipe.

As shown in FIG. 40, the liquid storage container 100z is moved in the first mounting direction MD1, which is the horizontal direction, so that the liquid storage container 100z can be moved through the attachment/detachment opening 474 of the storage portion 4z. It is inserted into the mounting chamber 65 of the housing portion 4z. The first mounting direction MD1 is the -Y direction.

As shown in FIG. 41, the liquid storage container 100z is pushed forward in the first mounting direction MD1, and the contact between the device-side terminals 490 of the connection mechanism 400 of the storage portion 4z and the terminals 290 of the substrate 120 is completed. By pushing down the second wall 101wr side of the liquid storage container 100z shown in FIG. 41, the liquid storage container 100z rotates in the second mounting direction MD2 having a gravity direction component about the rotational fulcrum Rp provided in the storage portion 4z. Moving. The second mounting direction MD2 has +Z direction and + Y direction components.

As shown in FIG. 42, when the rotational movement of the liquid container 100z in the second mounting direction MD2 is completed, the liquid supply portion 104 of the liquid container 100z and the liquid introduction portion 6 of the container 4z are connected. In this embodiment, one of the first mounting direction MD1 and the second mounting direction MD2 is the mounting direction MD.

A4-18. Alternative Embodiment 10 of Liquid Containment Container:
Although the liquid storage container 100 is an ink cartridge in the above-described first embodiment and other embodiments, it is not limited to this. The liquid storage container 100 may be, for example, a waste liquid storage container. The waste liquid storage container is, for example, a container that stores waste liquid ejected from the nozzles of the print head 5 when the printing apparatus 20 cleans the print head 5 .

A4-19. Alternative embodiment 1 of the printing system:
The printing system of the present disclosure is not limited to the printing system 1000 shown in FIG. FIG. 43 is a diagram showing a printing system 1000A as another embodiment 1 of the printing system. In the above-described first embodiment, as shown in FIG. 1, a configuration called on-carriage in which the liquid container 100 is mounted on the carriage 30 is used, but the configuration is not limited to this. A configuration called an off-carriage, in which the liquid container 100 is mounted at a location other than the carriage 30, may also be used. The printing system 1000A is an off-carriage type printing system and includes a printing device 20A and a liquid container 100T. The printing device 20A has a carriage 30 with a print head 5 . The liquid storage container 100T is detachably attached to a container attachment portion 600 arranged at a location different from the carriage 30 . Similarly to the liquid container 100 of the first embodiment, the liquid container 100T also includes a liquid container, a liquid container having an ink supply port, and a substrate. For example, liquid containers 100q to 100x shown in FIGS. 30 to 35 are attached to the printer 20A. The printer 20</b>A, like the printer 20 , executes connection state determination processing.

A4-20. Another Embodiment 2 of the Printing System:
FIG. 44 is a diagram showing a printing system 1000C as another embodiment 2 of the printing system. In the first embodiment described above, as shown in FIG. 1, the container 4 to which the liquid container 100 is detachably mounted is arranged inside the main body of the printer 20. However, the position of the container 4 is It is not limited. In the printing system 1000C shown in FIG. 45, the storage section 4C of the printing device 20C is arranged outside the main body 201 of the printing device 20C. The storage section 4C includes a liquid introduction section 6, a connection mechanism 400, and a sub-control board 500, as shown in FIGS. 7A and 7C. The liquid introduction part 6 and the print head 5 arranged in the main body 201 are in communication with each other through a flexible liquid flow tube 105 . A plurality of liquid flow pipes 105 are provided according to the number of liquid introduction portions 6 . A plurality of liquid flow tubes 105 are housed within one protective tube 106 . The printing apparatus 20C also has a bus 107 that connects the sub-control board 500 and the main control unit 40 (not shown) located in the main body 201 to transmit and receive various signals. Similarly to the liquid storage container 100 of the first embodiment, the liquid storage container 100 shown in FIG. 44 also includes a liquid storage body, a liquid supply section having a liquid supply port, and a substrate. The printer 20</b>C, like the printer 20 , executes connection state determination processing.

A4-21. Another Embodiment 3 of the Printing System:
FIG. 45 is a diagram showing a printing system 1000D as another embodiment 3 of the printing system. The printing system 1000D includes four liquid containers 100A, 100B, 100C, and 100D and the printing apparatus 20 shown in FIG. 1, as in the first embodiment. The liquid storage containers 100A to 100D may be integrally formed or individually formed. The liquid containers 100A-100D are replenished with liquid via an external liquid reservoir 814 and a liquid flow tube 812 located outside the printing system 1000D . In FIG. 45, among the liquid storage section 814 and the liquid flow pipe 812, elements corresponding to the respective liquid containers 100A to 100D are suffixed with "A" to "D".

A4-22. Alternative embodiment 4 of the printing system:
FIG. 46 is a diagram showing a printing system 1000E as another embodiment 4 of the printing system. The printing system 1000E includes an adapter 101E having a substrate 120, a liquid container 824 capable of containing liquid, a liquid distribution pipe 822, and the printing apparatus 20 shown in FIG. The adapter 101E can be detachably attached to the accommodating portion 4. As shown in FIG. The liquid circulation pipe 822 connects the liquid containing body 824 and the liquid introduction section 6 and functions as a liquid supply section. A portion of the liquid flow pipe 822 connected to the liquid introduction portion 6 functions as a liquid supply port. Four adapters 101E, four liquid flow tubes 822, and four liquid containers 824 are provided. In the printing system 1000E, the “attachment complete state” refers to a state in which the adapter 101E having the substrate 120 is attached to the printing apparatus 20 and no short circuit occurs between the terminals 290. FIG. In this embodiment, "the substrate 120 is attached to the printing apparatus 20" means that the substrate 120 is physically attached to the printing apparatus 20 and the contact portions cp of the terminals 290 are electrically connected to the apparatus-side terminals 490. It means that Data terminals 210 on board 120 are used to detect whether board 120 is attached to printing device 20 . The mounting determination unit 412 of the printing apparatus 20 determines whether or not the board 120 is mounted. The first response signal RT1 and the second response signal RT2 are signals used by the printing device 20 to determine that the substrate 120 is attached to the printing device 20 .

A4-23. Other embodiments for electrical and software configuration:
In the first embodiment, as shown in FIG. 1, the four liquid storage containers 100A to 100D are detachably attached to the storage portion 4. However, the liquid storage container 100 detachably attached to the storage portion 4 is not limited to this. 47A and 47B, a timing chart of connection state determination processing in a printing system 1000 in which six liquid containers 100 are detachably attached to the container 4 will be described below. The six liquid containers 100 contain, for example, inks of different colors. 47A and 47B are timing charts schematically showing signals input to and output from terminal 290 of liquid container 100 in the attachment complete state. FIG. 47A is a first timing chart for printing system 1000 with six liquid containers 100A-100F. FIG. 47B is a second timing chart for printing system 1000 with six liquid containers 100A-100F. 47A is a diagram corresponding to FIG. 11A, and FIG. 47B is a diagram corresponding to FIG. 11B. VDD, RST, SCK, SDA1-SDA6, shown in FIGS. 47A and 47B , carry signals sent and received or voltages supplied via corresponding terminals 290 by corresponding lines LVDD, LRST, LSCK, and LSDA1-LSDA6. means.

The request signal RS shown in FIG. 47A differs from the request signal RS shown in FIG. 11A in that the bits of cycles D4 and D3 of the command period CMT shown in FIG. , which is assigned to designate the liquid storage container 100F. In the request signal RS transmitted via the data line LSDA5 connected to the device 130E of the liquid container 100E, the second bit of the first identification data DB1 becomes high level and the remaining bits become low level. Regarding the request signal RS transmitted via the data line LSDA6 connected to the device 130F of the liquid container 100F, the first bit of the first identification data DB1 becomes high level and the remaining bits become low level.

The timing chart shown in FIG. 47B differs from the timing chart shown in FIG. 11B in that waveforms of the first response signal FS and the second response signal SS corresponding to the liquid containers 100E and 100F are added. The device 130E of the liquid container 100E outputs the first response signal FS to the data terminal 210 in the cycle D4 of the first response period RT1, and outputs the second response signal SS to the data terminal 210 in the cycle D4 of the second response period RT2. Output. The device 130F of the liquid container 100F outputs the first response signal FS to the data terminal 210 in the cycle D3 of the first response period RT1, and outputs the second response signal SS to the data terminal 210 in the cycle D3 of the second response period RT2. Output.

FIG. 48 is a diagram schematically showing the electrical configuration of a printing system 1000 that includes six liquid containers 100A-100F. In FIG. 48, the same reference numerals are assigned to the same electrical configurations as those shown in FIG. 8, and the description thereof will be omitted as appropriate. 48 and the electrical configuration shown in FIG. 8 is that, in FIG. 8, lines LSDA, LRST, LSCK, and LVDD other than the ground line LVSS are connected to the four liquid containers 100A to 100D. 48, lines LRST, LSCK, and LVDD other than the data line LSDA are commonly used for a plurality of devices 130. In FIG. In FIG. 48 as well, the ground line LVSS is commonly used for the devices 130A-130F of the six liquid containers 100A-100F.

As shown in FIG. 48, the power line LVDD2 electrically connected to the host terminal HVDD2 of the sub-controller 50 is electrically connected to the two devices 130B and 130E in the complete mounting state. The reset line LRST2 electrically connected to the host terminal HRST2 of the sub-controller 50 is electrically connected to the two devices 130B and 130C in the mounting complete state. The clock line LSCK2 electrically connected to the host terminal HSCK2 of the sub-controller 50 is electrically connected to the two devices 130B and 130D in the mounting complete state. The power supply line LVDD4 electrically connected to the host terminal HVDD4 of the sub-controller 50 is electrically connected to the two devices 130C and 130D in the mounting complete state. The reset line LRST4 electrically connected to the host terminal HRST4 of the sub-controller 50 is electrically connected to the two devices 130D and 130E in the mounting complete state. The clock line LSCK4 electrically connected to the host terminal HSCK4 of the sub-controller 50 is electrically connected to the two devices 130C and 130E in the mounting complete state. Lines LSDA1, LVDD1, LRST1 and LSCK1 electrically connected to device 130A and lines LSDA6, LVDD6, LRST6 and LSCK6 electrically connected to device 130F are not used together with other devices 130. Used independently.

A part of the electrical configuration of the printing system 1000 shown in FIG. 48 may be applied to the printing system 1000 shown in FIG. 1 including four liquid containers 100A to 100D. For example, the liquid containers 100B to 100E shown in FIG. 48 may be used in place of the liquid containers 100A to 100D of the printing system 1000 shown in FIG. For example, the liquid containers 100A, 100B, 100E, and 100F shown in FIG. 48 may be used in place of the liquid containers 100A to 100D of the printing system 1000 shown in FIG.

A4-24. Another embodiment 1 for the device:
In the first embodiment, as shown in FIG. 6, the device 130 includes the processing section 136 and the storage section 138, but is not limited to this. FIG. 49 is a diagram showing devices 130a and 130b as another embodiment 1 of the device 130. FIG. Device 130 a includes processing unit 136 but does not include storage unit 138 . Storage unit 138 and device 130 may be separate entities. In this case, the storage unit 138 is electrically connected to the processing unit 136 of the device 130b. The device 130 b includes a first processing section 136 a , a second processing section 136 b and a storage section 138 . The first processing section 136 a is connected to the storage section 138 . The second processing section 136b is connected to the first processing section 136a and terminals 210-250. In such a form, the first processing section 136a and the second processing section 136b function as a processing section as a whole. Thus, the device 130b may have multiple processing units 136a, 136b.

A4-25. Another embodiment 2 for the device:
In the first embodiment described above, as shown in FIG. 11C, the first response signal FS is output during the entire period in which the clock signal SCK is at the high level, but the present invention is not limited to this. For example, the device 130 may output the first response signal FS to the data terminal 210 during part of the period in which the clock signal SCK is at high level. For example, the device 130 may set the drive state of the data terminal 210 to high impedance after outputting the first response signal FS while the clock signal SCK is at high level. For example, in one period of the clock signal SCK, the device 130 may output the first response signal FS including the low level during the period when the clock signal SCK is at the low level and during the period when the clock signal is at the high level. good.

A4-26. Another embodiment 3 for the device:
In the first embodiment, the frequency of the clock signal SCK is constant as shown in FIGS. 11A and 11B in the connection state determination process, but it may not be constant. For example, the frequency of the clock signal SCK in the second response period RT2 may be set lower than the frequency of the clock signal SCK in the first response period RT1. The second response signal SS contains different voltages. In the second response period RT2, the frequency of the clock signal SCK may be set lower than in the first response period RT1, and the second response signal SS may be output longer than the first response signal FS.

A4-27. Another embodiment 4 for the device:
In the above-described first embodiment, the processing unit 136 of the device 130 repeats the first response period RT1 and the second response period RT2 in this order while the reset signal RST is at high level, so that the first response signal FS and the second response signal SS may be repeatedly output. After outputting the low-level voltage of the second response signal SS to the data terminal 210, the processing unit 136 of the device 130 outputs the first response signal FS and the second response signal FS when the request signal RS is input to the data terminal 210 again. A response signal SS may be output to the data terminal 210 .

A4-28. Another embodiment 5 for the device:
In the first embodiment, as shown in FIG. 11B, the rise and fall of the clock signal SCK, the signal such as the first response signal FS in the first response period RT1, and the second response signal in the second response period RT2 Although the rise and fall of signals such as SS are at the same timing, the timing is not limited to this. For example, the timing of the rise and fall of a signal such as the first response signal FS in the first response period RT1 and the signal such as the second response signal SS in the second response period RT2 are the same as the rise and fall of the clock signal SCK. It may be behind the timing.

A4-29. Another embodiment 6 for the device:
In the first embodiment, the processing units 136A to 136D of the devices 130A to 130D output the first response signal FS and the second response signal SS to the data terminal 210 in different periods of the clock signal SCK. However, it is not limited to this. For example, the processing units 136A-136D of the devices 130A-130D may output the first response signal FS and the second response signal SS in the same period of the clock signal SCK. In the connection state determination process, the printer 20 transmits and receives signals via the individual data lines LSDA1-LSDA4 electrically connected to the devices 130A-130D. Therefore, even if the first response signal FS and the second response signal SS are output from the devices 130A to 130D to the data terminal 210 in the same cycle during the first response period RT1 and the second response period RT2, the secondary control of the printing apparatus 20 The unit 50 can detect the voltage output from the data terminal 210 at each of the first timing t1 to the third timing t3. In this case, the request signal RS is set to high level in the corresponding bit of the command period CMT.

For example, the processing units 136A to 136D of the devices 130A to 130D transmit the first response signal FS and the second response signal SS to the data terminals in all cycles D3 to D8 of the first response period RT1 and the second response period RT2. 210 may be output. In this case, the first timing t1 may be provided in all of the cycles D3 to D8 of the first response period RT1. The second timing t2 and the third timing t3 may be provided in all of the cycles D3 to D8 of the second response period RT2.

A4-30. Another Embodiment 7 of the Device :
In the first embodiment, the processing units 136A to 136D of the devices 130A to 130D output the first response signal FS and the second response signal SS to the data terminal 210 in cycles D8 to D5 of the first response period. However, it is not limited to this. For example, the processing units 136A-136D of the devices 130A-130D may output the first response signal FS and the second response signal SS to the data terminal 210 in cycles D5-D8 of the first response period. In this case, the request signal RS is set to high level in the corresponding bit of the command period CMT.

A4-31. Other Device Embodiment 8:
In the first embodiment, the device 130 receives the request signal RS at the data terminal 210 and outputs the first response signal FS and the second response signal SS to the data terminal 210. However, the request signal RS may be a terminal other than the data terminal 210 . Similarly, the terminals that output the first response signal FS and the second response signal SS may be terminals other than the data terminal 210 . In that case, the device 130 and its terminals are connected.

B. Other forms:
The present disclosure is not limited to the above embodiments, and can be implemented in various configurations without departing from the scope of the present disclosure. For example, the technical features of the embodiments corresponding to the technical features in each form described below are used to solve some or all of the above problems or to achieve some or all of the above objects. In order to do so, it is possible to appropriately replace or combine them. Also, if the technical features are not described as essential in this specification, they can be deleted as appropriate. Each of the following forms does not need to have all the configurations of the present disclosure. Each of the following forms should have a minimum configuration for solving the above problems or achieving the above objects. Effects corresponding to one aspect are independent of effects corresponding to other aspects unless otherwise stated. In the combined form, there is an effect corresponding to the combined form.

(1) According to the first aspect of the present disclosure, a print head, a liquid introduction section for introducing liquid into the print head, a storage section provided with the liquid introduction section, and a and a plurality of device-side terminals configured to be electrically connected to a plurality of terminals of a liquid container mounted in the container of a printing device. This device is configured to meet I, II, III, and IV below.
I: A first signal including a first low voltage, a second signal including a second low voltage, and a second high voltage higher than the second low voltage are applied to the plurality of terminals. 1 terminal.
II: The first signal and the second signal indicate that the first terminal and terminals other than the first terminal included in the plurality of terminals are not short-circuited, and that the liquid container is It is used by the printing device to determine that it is attached to the printing device.
III: Outputting the first signal to the first terminal, and outputting the second signal to the first terminal after outputting the first signal.
IV: A clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is input to a second terminal included in the other terminals, and the voltage input to the second terminal is the high voltage. At a first timing in the period, the first low voltage is output to the first terminal, and after the first low voltage is output, the voltage input to the second terminal is the low voltage. At timing, the second high voltage is output to the first terminal, and after outputting the second high voltage, at a third timing in a period in which the voltage input to the second terminal is the high voltage, A second low voltage is output to the first terminal.
According to this aspect, the first low voltage is output to the first terminal at a predetermined first timing in a period in which the voltage input to the second terminal is a high voltage, and after outputting the first low voltage, the At a second timing in a period in which the voltage input to the two terminals is low, the second high voltage is output to the first terminal, and after the second high voltage is output, the voltage input to the second terminal is high. A second low voltage is output to the first terminal at a third timing in the voltage period. This causes the device to output a signal used to determine that the first terminal and the other terminals of the liquid container are not short-circuited and that the liquid container is attached to the printing apparatus. can be done. It is possible to reduce the possibility that the printing device will not operate normally even if it is determined that the liquid container is attached to the printing device, or that reading and writing to the device of the liquid container cannot be performed normally. can. A device in this form represents an improvement over the prior art.

(2) In the above aspect, when the first terminal and the other terminal are not short-circuited, in one cycle of the clock signal, during the period of the high voltage, before the first timing, the A first low voltage may be output to the first terminal. In general, the voltage is output more stably after a certain period of time has passed since it was output than immediately after it is output. According to this aspect, in one period of the clock signal, by outputting the first low voltage to the first terminal before the first timing within the period of the high voltage, the device causes the first terminal to A signal can be output to the printing device at the first timing while the output first low voltage is stable.

(3) In the above aspect, when the first terminal and the other terminal are not short-circuited, in one cycle of the clock signal, during the period of the low voltage, before the second timing, the A second high voltage may be output to the first terminal. According to this aspect, in one cycle of the clock signal, the first high voltage is output to the first terminal before the second timing in the low voltage period, thereby outputting the first high voltage to the first terminal. 1 With the high voltage stable, the device can output a signal to the printing device at a second timing.

(4) In the above aspect, when the first terminal and the other terminal are not short-circuited, in one cycle of the clock signal, during the period of the high voltage, before the third timing, the A second low voltage may be output to the first terminal. According to this aspect, in one period of the clock signal, the second low voltage is output to the first terminal before the third timing in the period of the high voltage, so that the device A signal can be output to the printing device at the third timing while the output second low voltage is stable.

(5) In the above aspect, when the first terminal and the other terminal are not short-circuited, the voltage input to the second terminal changes from the high voltage to the low voltage in one cycle of the clock signal. , the second high voltage is output to the first terminal, and when the voltage input to the second terminal changes from the low voltage to the high voltage, the second low voltage is applied to the first terminal Voltage may be output. According to this aspect, the voltage output to the first terminal and the voltage input to the second terminal are different. When the first terminal and the second terminal are short-circuited, the voltage of the first terminal becomes the same as the voltage of the second terminal. can be distinguished from Therefore, the device can output a signal indicating that the first terminal and the other terminals are not short-circuited and that the liquid container is attached to the printing apparatus.

(6) In the above aspect, when the voltage input to the second terminal changes from the low voltage to the high voltage when the first terminal and the other terminal are not short-circuited, the first The first low voltage may be output to a terminal. According to this aspect, the voltage output to the first terminal and the voltage input to the second terminal are different. When the first terminal and the second terminal are short-circuited, the voltage of the first terminal becomes the same as the voltage of the second terminal. can be distinguished from Therefore, the device can output a signal indicating that the first terminal and the other terminals are not short-circuited and that the liquid container is attached to the printing apparatus.

(7) In the above embodiment, III and IV may be performed multiple times. The first signal may not be correctly input from the printer due to the influence of static electricity or the like. According to this aspect, by performing the above-mentioned III and the above-mentioned IV a plurality of times, even if there is an influence of static electricity or the like, the first terminal and the other terminals are not short-circuited, and the liquid storage The device can output a signal indicating that the container is attached.

(8) In the above mode, when the printing apparatus receives a second print instruction while printing based on the first print instruction, printing based on the second print instruction is performed after printing based on the first print instruction is completed. may be output to the first terminal before the first signal and the second signal are started. According to this aspect, the first signal and the second signal are output to the first terminal after the printing based on the first printing instruction is finished and before the printing based on the second printing instruction is started, whereby continuous printing is performed. Even during printing, the device can output a signal indicating that the first terminal and the other terminals are not short-circuited and that the liquid container is attached to the printing apparatus.

(9) In the above aspect, when the printing apparatus receives an instruction to clean the print head, the first signal and the second signal may be output to the first terminal before performing the cleaning. . According to this aspect, when the printing device receives the print head cleaning instruction, the signal indicates that the first terminal and the other terminals are not short-circuited and that the liquid container is attached to the printing device. can be suppressed from failing cleaning due to poor communication.

(10) In the above aspect, the storage portion outputs the first signal and the second signal to the first terminal at the replacement position where the liquid storage container can be replaced, and the storage portion is positioned at the replacement position. The first signal and the second signal may be output to the first terminal when the liquid storage container is moved from the first position to the standby position where the liquid container cannot be replaced. According to this aspect, the mounting posture of the liquid container may be unstable immediately after the replacement of the liquid container. The mounting posture of the liquid container may change while moving to the standby position. With the change in the mounting posture, there is a possibility that a short circuit may occur between the first terminal and other terminals, or a contact failure may occur between the liquid container and the printing apparatus. Therefore, by outputting the first signal and the second signal to the first terminal even at the replacement position and outputting the first signal and the second signal to the first terminal at the standby position immediately after, the first terminal and the other The device can output a signal indicating that the terminals are not short-circuited and that the liquid container is attached to the printing apparatus. Alternatively, in the replacement position, the user's operation may move the liquid storage container to the standby position before the replacement of the liquid storage container is completed. In such a case, by outputting the first signal and the second signal to the first terminal when moving to the standby position, the first terminal and the other terminals are not short-circuited, and the liquid container is A device can output a signal indicating that it is attached to a printing apparatus.

(11) In the above aspect, the first terminal is a data terminal, the second terminal is a clock terminal, the first signal is a first response signal that responds to the printing device, and the first The 2 signal may be a second response signal responsive to the printing device.

(12) In the above aspect, the device may store information about the liquid contained in the liquid container.

(13) In the above aspect, the third terminal included in the other terminals receives a reset signal including a low voltage and a high voltage, and the fourth terminal included in the other terminals receives a power supply voltage. may be entered.

(14) In the above aspect, after the power supply voltage is input to the fourth terminal, the reset signal changes from the low voltage to the high voltage, thereby inputting the high voltage to the third terminal; After the high voltage of the reset signal is input to the third terminal, the clock signal is input to the second terminal, and after the high voltage of the reset signal is input to the third terminal, the 1 signal may be input to the first terminal.

(15) In the above aspect, the power supply voltage supplied to the fourth terminal may be used to drive the device.

(16) In the above aspect, the third terminal may be a reset terminal, and the fourth terminal may be a power terminal.

(17) According to the second aspect of the present disclosure, a print head, a liquid introduction section that introduces liquid to the print head, a storage section that is provided with the liquid introduction section and stores a liquid storage container, and the storage section a plurality of device-side terminals provided in a substrate mounted on a printing device and configured to make contact with the plurality of device-side terminals. The substrate includes a substrate, a device provided on the substrate, and a plurality of terminals provided on the substrate and electrically connected to the device, wherein the plurality of terminals is a first and other terminals including a second terminal, configured to satisfy conditions I, II, III, and IV below.
I: The device receives a first signal comprising a first low voltage, a second low voltage, and a second signal comprising a second high voltage higher than the second low voltage, to the first terminal. output to a printer.
II: The first signal and the second signal are used by the printing device to determine that the first terminal and the other terminal are not short-circuited and that the substrate is attached to the printing device. used for
III: The device outputs the first signal to the first terminal, and outputs the second signal to the first terminal after outputting the first signal.
IV: when the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is input from the printing device to the second terminal; At a first timing in a period in which the voltage input to the second terminal is the high voltage, the first low voltage is output from the first terminal to the printing device as a first expected value, and the first low voltage is output. After outputting the voltage, the second high voltage is output from the first terminal to the printing device as a second expected value at a second timing in a period in which the voltage input to the second terminal is the low voltage. and after outputting the second high voltage, the second low voltage is applied to the first terminal as a third expected value at a third timing in a period in which the voltage input to the second terminal is the high voltage. to the printing device.
According to this aspect, the first low voltage is output from the first terminal to the printing device at the predetermined first timing in the period when the voltage input to the second terminal is high voltage, and the first low voltage is output. After that, at a second timing in a period in which the voltage input to the second terminal is a low voltage, a second high voltage is output from the first terminal to the printing device, and after the second high voltage is output, the voltage is output to the second terminal. A second low voltage is output from the first terminal to the printer at a third timing in a period in which the input voltage is the high voltage. This allows the device to output a signal that is used to determine that the first terminal and the other terminals of the liquid container are not short-circuited and that the liquid container is attached to the printing apparatus. The substrate outputs the signal output by this device from the first terminal to the printing device. It is possible to reduce the possibility that the printing device will not operate normally even if it is determined that the liquid container is attached to the printing device, or that reading and writing to the device of the liquid container cannot be performed normally. can. A substrate in this form is an improvement over the prior art.

(18) In the above aspect, when the first terminal and the second terminal are short-circuited, a voltage different from the first expected value is output from the first terminal to the printer at the first timing. and outputting a voltage different from the second expected value to the printing apparatus from the first terminal at the second timing, and outputting a voltage different from the third expected value to the first terminal at the third timing. to the printing device. According to this aspect, a voltage indicating that a short circuit has occurred can be output from the substrate.

(19) In the above aspect, when the first terminal and the second terminal are short-circuited from after the first timing to before the second timing, at the first timing, the first expected value and outputting the same voltage from the first terminal to the printing device; at the second timing, outputting a voltage different from the second expected value from the first terminal to the printing device; at the third timing, A voltage different from the third expected value may be output from the first terminal to the printing device. According to this aspect, the same effect as the above aspect (18) can be obtained.

(20) In the above aspect, when the first terminal and the second terminal are short-circuited from after the second timing to before the third timing, at the first timing, the first expected value and outputting the same voltage from the first terminal to the printing device; at the second timing, outputting the same voltage as the second expected value from the first terminal to the printing device; at the third timing, A voltage different from the third expected value may be output from the first terminal to the printing device. According to this aspect, the same effect as the above aspect (18) can be obtained.

(21) In the above aspect, if the short circuit between the first terminal and the second terminal is eliminated after the first timing and before the second timing, the first expected outputting a voltage different from the value to the printing device from the first terminal; at the second timing, outputting the same voltage as the second expected value from the first terminal to the printing device; , the same voltage as the third expected value may be output from the first terminal to the printer. According to this aspect, the same effect as the above aspect (18) can be obtained.

(22) In the above aspect, if the short circuit between the first terminal and the second terminal is resolved after the second timing and before the third timing, the first expected outputting a voltage different from the value from the first terminal to the printing device; at the second timing, outputting a voltage different from the second expected value from the first terminal to the printing device; , the same voltage as the third expected value may be output from the first terminal to the printer. According to this aspect, the same effect as the above aspect (18) can be obtained.

(23) In the above aspect, the first terminal is a data terminal, the second terminal is a clock terminal, the first signal is a first response signal that responds to the printing device, and the first The 2 signal may be a second response signal responsive to the printing device.

(24) In the above aspect, the other terminals include a third terminal and a fourth terminal, the third terminal receives a reset signal including a low voltage and a high voltage, and the fourth terminal receives a reset signal including a low voltage and a high voltage. may receive the power supply voltage. According to this aspect, the device is used to check that the first terminal and the second, third, and fourth terminals included in the other terminals are not short-circuited, and that the liquid container is connected to the printing apparatus. The printing device can determine that it is installed.

(25) In the above aspect, when at least one of when the first terminal and the third terminal are short-circuited and when the first terminal and the fourth terminal are short-circuited, the At one timing, a voltage different from the first expected value is output from the first terminal to the printing device, and at the second timing, a voltage same as the second expected value is output from the first terminal to the printing device. , and at the third timing, a voltage different from the third expected value may be output from the first terminal to the printer. According to this aspect, the same effect as the above aspect (18) can be obtained.

(26) In the above aspect, after the first timing and before the second timing, when the first terminal and the third terminal are short-circuited, and when the first terminal and the fourth terminal are short-circuited. and at least one of short-circuiting, at the first timing, the same voltage as the first expected value is output from the first terminal to the printing device, and at the second timing, the second 2 The same voltage as the expected value may be output from the first terminal to the printing device, and at the third timing, a voltage different from the third expected value may be output from the first terminal to the printing device. . According to this aspect, the same effect as the above aspect (18) can be obtained.

(27) In the above aspect, after the second timing and before the third timing, when the first terminal and the third terminal are short-circuited, and when the first terminal and the fourth terminal are short-circuited. and at least one of short-circuiting, at the first timing, the same voltage as the first expected value is output from the first terminal to the printing device, and at the second timing, the second 2 The same voltage as the expected value may be output from the first terminal to the printing device, and at the third timing, a voltage different from the third expected value may be output from the first terminal to the printing device. . According to this aspect, the same effect as the above aspect (18) can be obtained.

(28) In the above aspect, after the first timing and before the second timing, the short circuit between the first terminal and the third terminal is eliminated, and the first terminal and the fourth terminal are disconnected. When the short circuit is eliminated, at the first timing, a voltage different from the first expected value is output from the first terminal to the printing device, and at the second timing, the same voltage as the second expected value is output, The voltage may be output from the first terminal to the printer, and at the third timing, the same voltage as the third expected value may be output from the first terminal to the printer. According to this aspect, the same effect as the above aspect (18) can be obtained.

(29) According to the above aspect, after the second timing and before the third timing, the short circuit between the first terminal and the third terminal is eliminated, and the first terminal and the fourth terminal are disconnected. When the short circuit with is eliminated, at the first timing, a voltage different from the first expected value is output from the first terminal to the printing device, and at the second timing, the same voltage as the second expected value may be output from the first terminal to the printer, and at the third timing, the same voltage as the third expected value may be output from the first terminal to the printer. According to this aspect, the same effect as the above aspect (18) can be obtained.

The present disclosure can be realized in the form of a liquid container, a system, a substrate or use of a liquid container, a device, a substrate, a method of controlling a system, etc., in addition to the above-described forms.

4, 4C, 4z...Accommodating part 5...Print head 6...Liquid introducing part 20, 20A, 20C...Printing device 22...Motor 26...Roller 30...Carriage 31...Cable 32...Carriage motor 34 Sliding shaft 36 Drive belt 38 Pulley 39 Control unit 40 Main control unit 45 Connection bus 46 Bus 50 Sub control unit 61 Case 65 Mounting chamber 70 Operation unit 80 Connector 89, 89a Corner portion 90 Computer 100, 100A to 100F, 100T, 100g, 100h, 100p to 100s, 100w, 100x, 100y, 100z Liquid container 101 Liquid container 101wf First wall 101wr Second wall 101wb Third wall 101wu Fourth wall 101wsa Fifth wall 101wsb Sixth wall 101ya Liquid container 101yb Adapter DESCRIPTION OF SYMBOLS 104... Liquid supply part, 104f... Film, 104op... Liquid supply port, 105... Liquid flow pipe, 106... Protection tube, 107... Bus, 110... Liquid detection member, 111... Liquid storage bag, 112... Connection member, 120, 120A, 120Td, 120U, 120V, 120X, 120ab, 120ac, 120ad, 120ae, 120c, 120d, 120f, 120g, 120j, 120k... substrate, 120UA... first substrate area, 120UB... second substrate area, 120UC... third Substrate region 120UD Fourth substrate region 120a First protrusion 120fa Front surface 120fb Back surface 122 Hole 123 Slit 124a First base material 124b Second base material 127 Battery , 130, 130A to 130F device 134 opening 136, 136A processing unit 136a first processing unit 136b second processing unit 138 storage unit 139 resin 150 ink chamber 201 Main body 210 Data terminal 220 Clock terminal 230 Power supply terminal 240 Reset terminal 250, 250a, 250b, 250c, 250d, Ground terminal 290 Terminal 301 Slit 310 First cartridge Engagement portion 320 Second cartridge engagement portion 400 Connection mechanism 403 to 403E Contact portion forming member 405 Terminal holding portion 410 Apparatus side terminal 411 Determination portion 412 Determination portion 412 414 short-circuit determination unit 415 CPU 416 device-side first storage unit 420, 430, 440, 450, DESCRIPTION OF SYMBOLS 490... Apparatus-side terminal 421... Judgment part 424... Opening 425... Container-side engaging structure 431-434, 439... Relay terminal 441... Power source 474... Detachable opening 495... Display panel 500... Sub-control board 510, 520, 530, 540, 550, 590... Sub-control board terminal 511... Switching section 516... Device side second storage section 600... Cartridge mounting section 812, 822... Liquid distribution tube 814... Liquid reservoir 824 Liquid container 990 Substrate holder 1000, 1000A, 1000B, 1000C, 1000D, 1000E Printing system BCC1 First execution command BCC2 Second execution command C1 First virtual line, C2...second virtual line, CMP...central part, CMT...command period, D1 to D9...cycle, DB1...first identification data, DB2...second identification data, HSDA, HSDA1 to HSDA6, HVDD, HVDD1 to HVDD4 , HVDD6, HRST, HRST1 to HRST4, HRST6, HSCK, HSCK1 to HSCK4, HSCK6, HVSS... host terminal, LSDA, LSDA1 to LSDA6... data line, LVDD, LVDD1 to LVDD4, LVDD6... power supply line, LRST, LRST1 to LRST4, LRST6... Reset line, LSCK, LSCK1 to LSCK4, LSCK6... Clock line, LVSS... Ground line, MD... Mounting direction, MD1... First mounting direction, MD2... Second mounting direction, MP... Intermediate point, P1... First parity Data, P2...Second parity data, PA...Print medium, R1...First row, R2...Second row, RD...Rotational mounting direction, RS...Request signal, RST...Reset signal, Rg1...First area, Rg2... Second region Rp...Rotation center SCK...Clock signal FD...First direction SD...Second direction SDA, SDA1 to SDA6...Data signal SL...Second line segment SS...Second response signal TL 3rd line segment VDD power supply voltage VSS ground potential Vcr virtual circle Wa distance cp contact portion cp1 first contact portion cp2 second contact portion cp3 third contact portion , cp4...fourth contact, cp5...fifth contact, cpc...clock contact, cpd...data contact, cpr...reset contact, cpvd...power supply contact, cpvs...ground contact, dcpc...device clock Contacts dcpd...Device-side data contact dcpr...Device-side reset contact dcpvd...Device-side power contact dcpvs...Device-side ground contact t1...First tie t2... second timing t3... third timing ta, tb... timing

Claims (16)

A printing apparatus comprising: a print head; a liquid introduction section for introducing liquid into the print head; a storage section provided with the liquid introduction section; and a plurality of device-side terminals provided in the storage section. A device configured to be electrically connected to a plurality of terminals of a liquid container mounted in a container, the device configured to satisfy I, II, III, and IV below.
I
a first signal comprising a first low voltage;
a second signal comprising a second low voltage and a second high voltage higher than the second low voltage;
is output to a first terminal included in the plurality of terminals.
II
The first signal and the second signal are based on the fact that the first terminal and terminals other than the first terminal included in the plurality of terminals are not short-circuited, and that the liquid container is not in contact with the print. It is used by the printing device to determine that it is attached to the device.
III
outputting the first signal to the first terminal;
After outputting the first signal, the second signal is output to the first terminal.
IV
A clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is input to a second terminal included in the other terminals,
outputting the first low voltage to the first terminal at a first timing in a period in which the voltage input to the second terminal is the high voltage;
After outputting the first low voltage, outputting the second high voltage to the first terminal at a second timing in a period in which the voltage input to the second terminal is the low voltage,
After outputting the second high voltage, the second low voltage is output to the first terminal at a third timing in a period in which the voltage input to the second terminal is the high voltage. 2. The device of claim 1, comprising:
When the first terminal and the other terminal are not short-circuited, the first low voltage is applied to the first low voltage before the first timing in the period of the high voltage in one cycle of the clock signal. A device that outputs to one terminal. 3. A device according to claim 1 or claim 2, wherein
When the first terminal and the other terminal are not short-circuited, the second high voltage is applied to the second high voltage before the second timing in the period of the low voltage in one cycle of the clock signal. A device that outputs to one terminal. A device according to any one of claims 1 to 3, wherein
When the first terminal and the other terminal are not short-circuited, the second low voltage is applied to the second low voltage before the third timing in the period of the high voltage in one cycle of the clock signal. A device that outputs to one terminal. A device according to any one of claims 1 to 4, wherein
When the first terminal and the other terminal are not short-circuited, in one period of the clock signal,
when the voltage input to the second terminal changes from the high voltage to the low voltage, outputting the second high voltage to the first terminal;
A device that outputs the second low voltage to the first terminal when the voltage input to the second terminal changes from the low voltage to the high voltage. A device according to any one of claims 1 to 5,
When the voltage input to the second terminal changes from the low voltage to the high voltage when the first terminal and the other terminal are not short-circuited, the first low voltage is applied to the first terminal. A device that outputs A device according to any one of claims 1 to 6,
A device wherein said III and said IV are performed multiple times. A device according to any one of claims 1 to 7,
When the printing apparatus receives a second print instruction during printing based on the first print instruction, after printing based on the first print instruction is completed and before printing based on the second print instruction is started, the A device that outputs a first signal and said second signal to said first terminal. A device according to any one of claims 1 to 8,
A device for outputting the first signal and the second signal to the first terminal before performing the cleaning when the printing apparatus receives an instruction to clean the print head. A device according to any one of claims 1 to 9,
outputting the first signal and the second signal to the first terminal at a replacement position where the storage unit can replace the liquid storage container;
A device that outputs the first signal and the second signal to the first terminal when the storage unit moves from the replacement position to a standby position where the liquid storage container cannot be replaced. A device according to any one of claims 1 to 10,
the first terminal is a data terminal;
the second terminal is a clock terminal;
the first signal is a first response signal that responds to the printing device;
The device, wherein the second signal is a second response signal that responds to the printing device. A device according to any one of claims 1 to 11,
A device as claimed in claim 1, wherein the device stores information relating to the liquid contained in the liquid container. A device according to any one of claims 1 to 12,
a reset signal including a low voltage and a high voltage is input to a third terminal included in the other terminals;
A device, wherein a power supply voltage is input to a fourth terminal included in the other terminals. 14. The device of claim 13, wherein
After the power supply voltage is input to the fourth terminal, the high voltage is input to the third terminal by changing the reset signal from the low voltage to the high voltage,
after the high voltage of the reset signal is input to the third terminal, the clock signal is input to the second terminal;
The device, wherein the first signal is input to the first terminal after the high voltage of the reset signal is input to the third terminal. 15. A device according to claim 13 or claim 14, wherein
The device according to claim 1, wherein the power supply voltage supplied to the fourth terminal is used to drive the device. 16. A device according to any one of claims 13 to 15,
the third terminal is a reset terminal;
The device, wherein the fourth terminal is a power terminal.

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