JP2022118699A5 - device - Google Patents

Description

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

Also, there is known a technique of 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 printing device through one 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.

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 the 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 orthogonal 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.

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.

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.

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 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 .

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. A portion 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.

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.

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.

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.

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 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 that is 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 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.

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 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 in one period of the clock signal SCK, during which the clock signal SCK is at low level. 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 period of the clock signal SCK.

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 .

A3-3. Details of the software configuration (connection status determination process):
With reference to FIG. 12, the connection state determination process executed by the main control unit 40 will be described. FIG. 12 is a diagram showing an outline 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 mounting completion 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 supply terminal 230, the reset terminal 240, and the clock terminal 220, 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. 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 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 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 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 attachment detection mechanism for the liquid container 100 and the short circuit detection mechanism between the terminals 290 can be recognized as independent structures.

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.

(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".

(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 high level at the first timing t1 of the cycle D8 in the first response period RT1 from the data terminal 210, 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".

(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 storage container 100A is removed from the storage section 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.

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.

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.

A4-5. 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.

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.

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 containing bag and arranged in the opening 424 formed in the front wall 101wf 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. 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. 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.

A4-13. 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 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.

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.

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 apparatus 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.

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 whole as a processing section. Thus, the device 130b may have multiple processing units 136a, 136b.

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.

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.

(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.

(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.

(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.

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 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 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,
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 cycle 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.

Images