JP7009885B2 - Printing device and control method of printing device - Google Patents

Description

The present invention relates to a printing device and a method for controlling the printing device.

Conventionally, a technique for supplying electric power to a plurality of substrates (loads) is known (see, for example, Patent Document 1). In Patent Document 1, when power is supplied from a battery to a substrate related to backup, supply control is executed according to the characteristics of the battery, and power is supplied in order based on the importance of the substrate to ensure backup. To disclose.

Japanese Unexamined Patent Publication No. 2009-70209

However, in Patent Document 1, it is premised that the substrate to be supplied with power is a substrate related to backup, and a substrate related to other operations is not considered. Therefore, in Patent Document 1, complicated control may be required when power is supplied to various substrates for operation.
Therefore, an object of the present invention is to make it possible to easily control the power supply to a plurality of substrates without requiring complicated control.

In order to solve the above problems, the printing apparatus of the present invention has a user interface board having a detection circuit for detecting a user's operation, and an operation control board for controlling an operation related to printing based on an output from the detection circuit. The power supply switching circuit includes a control board having a plurality of control boards, a power supply board for supplying power to the operation control board and the user interface board, and a power supply switching circuit for switching the power supply state to the operation control board. , It is connected to the user interface board, and the power supply state to the operation control board is switched based on the instruction from the user interface board.
According to the present invention, the power supply state to the operation control board can be switched in an appropriate order based on the instruction from the user interface board, and the power supply to a plurality of boards can be easily performed without requiring complicated control. Can be controlled.

Further, in the present invention, the user interface board has a state acquisition circuit for acquiring the state of the operation control board, and the power supply switching circuit corresponds to the state of the operation control board acquired by the state acquisition circuit. The power supply state to the operation control board is switched based on the instruction from the user interface board.
According to the present invention, by switching the power supply state to the operation control board based on the instruction from the user interface board according to the state of the operation control board, the state of the operation control board can be taken into consideration when supplying power. The power supply to the board can be appropriately controlled.

Further, in the present invention, the power supply board has a power supply abnormality detection circuit for detecting an abnormality in the power supply state, and the user interface board has a switching order of the power supply state when the power supply state is abnormal. Is stored in the storage circuit, and when the power supply abnormality detection circuit detects an abnormality in the power supply state, the power supply switching circuit switches the power supply state according to the switching order stored in the storage circuit.
According to the present invention, when the power supply state becomes abnormal, the power supply state is switched according to the switching order recorded in the recording circuit. Therefore, even if the power supply state becomes abnormal, a plurality of boards are used. Power supply to can be controlled in an appropriate order.

Further, in the present invention, the detection circuit is configured to be able to detect any operation of transition to the power saving mode or return from the power saving mode with respect to the operation mode of the printing device, and the control board is configured to detect the operation. The operation control board includes a mechanical control board for controlling a mechanism and a data processing board for processing data, and the user interface board inputs the detection result of the detection circuit to the power supply switching circuit to switch the power supply. When the input detection result indicates the transition to the power saving mode, the circuit switches the power supply state to the stopped state in the order of the mechanical control board and the data processing board, and the input detection result is the power saving mode. When indicating the return to, the power supply state is switched to the supply state in the order of the data processing board and the mechanical control board.
According to the present invention, the power supply state between the mechanical control board and the data processing board is switched in an appropriate order according to either the operation of shifting to the power saving mode or returning from the power saving mode, thus saving power. It is possible to control the power supply to the mechanical control board and the data processing board in an appropriate order when shifting to the power mode and returning from the power saving mode.

Further, in the present invention, the power supply board is configured to be able to supply power to the user interface board, and the power supply board can be used on the user interface board even when the operation mode of the printing device is the power saving mode. Supply power.
According to the present invention, power is supplied to the user interface board even when the operation mode of the printing device is the power saving mode, so that power is unnecessarily consumed after preventing accidentally returning from the power saving mode. It can be prevented from being done.

Further, in order to solve the above problems, the present invention provides a user interface board having a detection circuit for detecting a user's operation and an operation control board for controlling an operation related to printing based on an output from the detection circuit. A control method for a printing device including a plurality of control boards, wherein a power supply board supplies power to the operation control board and the user interface board, is connected to the user interface board, and is connected to the operation control board. The power supply switching circuit for switching the power supply state switches the power supply state to the operation control board based on the instruction from the user interface board.
According to the present invention, by switching the power supply state to the operation control board based on the instruction from the user interface board, it is possible to make each operation control board execute a predetermined operation in an appropriate order, which is complicated. The power supply to a plurality of boards can be easily controlled without requiring control.

Schematic perspective view of the printer. The figure which shows the configuration of a printer. The figure which shows typically the connection mode of each board provided with a printer. A flowchart showing the operation of the printer. The figure which shows an example of the ordinal data. The figure which shows an example of the ordinal data. A timing chart showing the switching of power supply status. A flowchart showing the operation of the printer. A timing chart showing the switching of power supply status. A flowchart showing the operation of the printer. A flowchart showing the operation of the printer.

FIG. 1 is a schematic perspective view showing the front side of the printer 1 (printing apparatus).

In FIG. 1, the X direction indicates the scanning direction scanned by the carriage 22, and also indicates the width direction of the printer 1. Of the X directions, the + X direction indicates the left direction when the printer 1 is viewed from the front, and the −X direction indicates the right direction when the printer 1 is viewed from the front. Further, in FIG. 1, the Y direction indicates the front-back direction of the printer 1. Of the Y directions, the + Y direction indicates the front direction of the printer 1, and the −Y direction of the Y directions indicates the rear direction of the printer 1. Further, the + Y direction indicates the transport direction of the media M when printing is executed on the media M, and the −Y direction is the transport direction of the media M when printing is executed on the media M. Shows the opposite direction. Further, in FIG. 1, the Z direction indicates the vertical direction of the printer 1. Of the Z directions, the + Z direction indicates an upward direction with respect to the gravity direction when the printer 1 is installed, and the −Z direction among the Z directions is a downward direction with respect to the gravity direction when the printer 1 is installed. Is shown.

The printer 1 is a device that prints characters, images, and the like by ejecting ink in an inkjet manner based on image data received from an external device such as a host computer. In particular, the printer 1 of the present embodiment is a large format printer (LFP) that performs printing on a relatively large medium M.

As the media M, for example, a printing medium such as high-quality paper, cast paper, art paper, coated paper, synthetic paper, a film made of PET (Polyethylene terephthalate) or PP (Polypropylene), or a cloth can be adopted. Further, as the media M, for example, a print medium having a width of up to 73 inches can be adopted.

As shown in FIG. 1, the printer 1 includes a printer main body 2 and legs 3. The legs 3 of the printer 1 are attached to the printer main body 2. The legs 3 may be configured to be removable with respect to the printer main body 2.

The leg portion 3 includes two support columns 32 having a roller 31 for movement. The legs 3 may also include reinforcing rods (not shown) that are hung between the two support columns 32. The printer body 2 is fixed to the upper side of the support column 32 by a fixing member such as a screw. A predetermined space is provided between the support columns 32 so that, for example, a device for receiving the media M discharged from the paper ejection port 40 (described later) can be arranged.

The printer main body 2 includes an upper main body 2a and a lower main body 2b. On the entire surface of the printer 1, a paper ejection port 40 extending in the X direction is formed between the upper main body 2a and the lower main body 2b. A platen 41 indicating the media M projects forward from the paper ejection port 40. The paper ejection port 40 ejects paper to the outside of the printer 1 while supporting the media M on which characters, images, etc. are printed by the printer 1 with the platen 41.

The upper main body 2a of the printer main body 2 includes a printing unit 20 inside. As shown in FIG. 1, the printing unit 20 includes an inkjet head 21, a carriage 22, and a guide shaft 23.

The carriage 22 is equipped with an inkjet head 21 that ejects ink, and is guided in a direction in which the guide shaft 23 extends (that is, a scanning direction) to reciprocate. The inkjet head 21 has a plurality of nozzles capable of ejecting ink stored in an ink storage unit (not shown). The inkjet head 21 prints media M in which inks of, for example, cyan (C), magenta (M), yellow (Y), and black (K) are supplied from the ink storage unit and conveyed in the conveying direction. Discharge to the surface.

The upper main body 2a of the printer main body 2 includes an upper lid 50. The upper lid 50 is provided on the front side with respect to the printing unit 20, and is configured to cover the printing unit 20 so that the inkjet head 21, the carriage 22, and the like are not exposed. For example, the upper lid 50 is opened by being pushed up by the printer 1 and closed by being pushed down by the printer 1.

The upper main body 2a of the printer main body 2 includes an inclined portion 60 that inclines downward toward the front direction of the printer 1. A touch panel 70 that accepts a user's operation is provided on the upper right side of the inclined portion 60 and not on the upper lid 50.

FIG. 2 is a diagram showing the configuration of the printer 1.

As shown in FIG. 2, the printer 1 includes a control unit 100, a storage unit 101, a communication unit 102, a user interface unit 103, a printing unit 20, a driving unit 104, a transport unit 105, and a heating unit 106. , A power supply unit 107, an image processing unit 108, and a discharge data processing unit 109.

The control unit 100 includes a CPU (processor), a ROM, a RAM, an ASIC, a signal processing circuit, and the like, and controls each unit of the printer 1. In the control unit 100, for example, the CPU reads a program stored in a ROM, a storage unit 101 described later, or the like into a RAM and executes processing, and also executes processing by a function implemented in, for example, an ASIC. Processing is executed by hardware and software, such as performing signal processing in a signal processing circuit and executing processing. The control unit 100 is mounted on a PC board 204, which will be described later.

The storage unit 101 includes a hard disk, a non-volatile memory such as an EEPROM and an SSD (Solid State Drive), and stores various data in a rewritable manner. The storage unit 101 is mounted on a PC board 204, which will be described later.

The communication unit 102 communicates with an external device such as a host computer under the control of the control unit 100 according to a predetermined communication standard. The communication unit 102 is mounted on a PC board 204, which will be described later.

The user interface unit 103 includes a touch panel 70 provided on the printer 1 and an operation switch 71 for the user to operate the printer 1. The user interface unit 103 detects the user's operation on the touch panel 70 and the operation switch 71, and outputs the user's operation to the control unit 100. The control unit 100 executes a process corresponding to the user's operation on the touch panel 70 and the operation switch 71 based on the input from the user interface unit 103. The user interface unit 103 is mounted on the user interface board 202, which will be described later.

The printing unit 20 includes the carriage 22 described above, an inkjet head 21 mounted on the carriage 22, a drive circuit (not shown) for driving the inkjet head 21, a carriage drive motor 114 for scanning the carriage 22 in the scanning direction, and a carriage control board. It includes a configuration related to printing on 307 (described later), a head control board 308 (described later), and other media M. The printing unit 20 prints characters, images, and the like on the media M under the control of the control unit 100.

The drive unit 104 includes a mechanism for driving a mechanism such as a mechanical mechanism control board 301 (described later) and a motor control board 304 (described later), and drives the mechanism according to the control of the control unit 100. In particular, the drive unit 104 drives the carriage drive motor 114 and the transfer motor 125.

The transport unit 105 includes a transport motor 125 for rotationally driving a roller for transporting the media M, a mechanical relay board 302 (described later), a mechanical relay board 303 (described later), and other media M transport configurations. The transport unit 105 transports at least the media M in the transport direction under the control of the control unit 100.

The heating unit 106 has a configuration for heating the media M, such as a platen heater that heats the platen 41, and heats the conveyed media M under the control of the control unit 100.

The power supply unit 107 is connected to a commercial AC power supply DK (see FIG. 3), performs rectification, smoothing, and voltage conversion, and supplies DC power to each unit of the printer 1. The power supply unit 107 includes a voltage conversion board 200 (described later) and a power distribution board 201 (power supply board) (described later).

The image processing unit 108 includes a CPU (processor), ROM, RAM, ASIC, signal processing circuit, etc., and performs resolution conversion processing and color conversion for image data received from an external device and stored in the storage unit 101. Performs various processes such as processing and halftone processing. The image processing unit 108 is mounted on an image processing board 305, which will be described later. In the following description, the target data on which the image processing unit 108 executes various processes based on the image data is also expressed as print data.

The resolution conversion process is a process of converting the image data read from the storage unit 101 into print data having a set resolution. For example, when the resolution of the print data is set to 600 × 600 dpi, the image processing unit 108 converts the vector format image data into the bitmap format print data having a resolution of 600 × 600 dpi. The print data after the resolution conversion process is composed of pixel data indicating pixels arranged in a matrix. Each pixel data is data having a gradation value of, for example, 256 gradations in the RGB color space.

The color conversion process is, for example, a process of converting print data in the RGB color space into print data in the CMYK color space. The CMYK colors are cyan (C), magenta (M), yellow (Y), and black (K), and the print data in the CMYK color space is data corresponding to the color of the ink possessed by the printer 1. Therefore, for example, when the printer 1 uses four types of inks of the CMYK color system, the image processing unit 108 generates print data of the four-dimensional space of the CMYK color system based on the print data of the RGB color space. .. This color conversion process is executed based on a table (so-called look-up table (LUT)) in which the gradation value in the RGB color space and the gradation value in the CMYK color space are associated with each other. The print data after the color conversion process is print data represented by the CMYK color space.

The halftone process is a process of converting print data having a high gradation number (256 gradations) into print data having a number of gradations that can be formed by the printer 1. By this halftone processing, the print data showing 256 gradations can be, for example, 1-bit print data showing 2 gradations (with or without dots) or 4 gradations (without dots, small dots, medium dots, large dots). ) Is converted into 2-bit print data or the like. Specifically, from the dot generation rate table corresponding to the gradation value (0 to 255) and the dot generation rate, the dot generation rate corresponding to the gradation value (for example, in the case of 4 gradations, there is no dot, The generation rate of each of small dots, medium dots, and large dots) is obtained, and at the obtained generation rate, the print data is generated so that the dots are dispersed and formed based on algorithms such as the dither method and the error diffusion method. Will be created.

The image processing unit 108 is not limited to a configuration that executes all of these various processes. For example, when an external device transmits image data that has been executed up to the color conversion process, only the process after the color conversion process is the image data. It may be configured to be executed in.

The ejection data processing unit 109 includes, for example, a CPU (processor), a ROM, a RAM, an ASIC, a signal processing circuit, and the like, and executes rasterization processing, command addition processing, and the like on print data for which halftone processing has been completed. , Generate print data. The discharge data processing unit 109 is mounted on the discharge data processing board 306, which will be described later.

The rasterization process is a process of rearranging pixel data arranged in a matrix (for example, 1-bit or 2-bit data as described above) according to the dot formation order at the time of printing. The pixel data arranged in a matrix is allocated to the actual nozzles forming each raster line constituting the printed image.

The command addition process is a process of adding a command according to the printing operation of the printer 1 to the rasterized print data. Examples of the command include a command for instructing the transport of the media M (movement amount, speed, etc. in the transport direction).

Further, the ejection data processing unit 109 controls the printing unit 20 to control the selection of the nozzle for ejecting ink, the ejection amount, the ejection timing, and the like, based on the print data obtained by executing the above-mentioned various processes. Output a signal. Further, the ejection data processing unit 109 outputs a control signal for controlling the scanning direction, the scanning amount, the scanning speed, etc. of the carriage 22 to the drive unit 104 based on the print data obtained by executing the above-mentioned various processes. Further, the ejection data processing unit 109 outputs a control signal for controlling the transport amount, transport speed, etc. of the media M to the drive unit 104 based on the print data obtained by executing the above-mentioned various processes.

Further, the ejection data processing unit 109 is used, for example, for a chip (not shown) (predetermined storage area) that manages the amount of ink stored in the ink tank (not shown) that supplies ink to the inkjet head 21. Write the amount of ink.

With the above configuration, the printer 1 performs an operation of ejecting ink from the inkjet head 21 while scanning the carriage 22 in the scanning direction along the guide shaft 23, and an operation of transporting the media M by the transport unit 105 in the transport direction. Repeatedly, characters, images, and the like are printed on the media M.

Next, a connection mode of each board included in the printer 1 will be described.
FIG. 3 is a diagram schematically showing a connection mode of each board included in the printer 1. In particular, FIG. 3 is a diagram schematically showing a connection mode related to power supply.

As shown in FIG. 3, the printer 1 includes a voltage conversion board 200, a power distribution board 201, a user interface board 202, a printed control board 203 (control board), and a PC board 204.

The voltage conversion board 200 is connected to the commercial AC power supply DK, rectifies, smoothes, and voltage-converts the power supplied from the commercial AC power supply DK, and supplies the power indicating the converted voltage to the power distribution board 201. It is a substrate to be used. The voltage conversion board 200 is arranged inside, for example, the lower main body 2b of the printer 1. The voltage conversion board 200 of the present embodiment includes a first conversion circuit 200a, a second conversion circuit 200b, and a third conversion circuit 200c. The first conversion circuit 200a converts, for example, 100 volt (V) AC power into 42 volt (V) DC power, and supplies the converted 42 volt (V) power to the power supply line DL1 of the power distribution board 201. do. The second conversion circuit 200b converts, for example, 100 volt (V) AC power into 24 volt (V) DC power, and supplies the converted 24 volt (V) power to the power supply line DL1 of the power distribution board 201. do. The third conversion circuit 200c converts, for example, 100 volt (V) AC power into 12 volt (V) DC power, and supplies the converted 12 volt (V) power to the power supply line DL2 of the power distribution board 201. do.

Next, the user interface board 202, the print control board 203, and the PC board 204 will be described before the power distribution board 201.

The user interface board 202 mounts the circuit related to the user interface unit 103 shown in FIG. The user interface board 202 mounts (has) an operation detection circuit 202a (detection circuit) for detecting a user's operation. The operation detection circuit 202a corresponds to, for example, the touch sensor of the touch panel 70, and detects the user's touch operation. Further, the operation detection circuit 202a detects the user's operation on the operation switch 71. Further, the user interface board 202 mounts (has) a state acquisition circuit 202b for acquiring the state of each operation control board (described later) from the PC board 204 (described later). Examples of the state of the operation control board include a start state, a stop state, and an error state. The state acquisition circuit 202b outputs a signal corresponding to the state of each operation control board to the distribution board control IC (Integrated Circuit) 211 (power supply switching circuit) of the power distribution board 201. Outputting this signal corresponds to an instruction from the user interface board 202. The state acquisition circuit 202b is connected to each operation control board included in the print control board 203, and monitors the state of the operation control board for each operation control board. For example, the state acquisition circuit 202b transmits a predetermined signal to each operation control board, and monitors the state of the operation control board depending on whether or not there is a response to the transmitted signal. As for the monitoring method of the state acquisition circuit 202b, any method can be adopted.
The user interface board 202 is arranged on the upper right side, for example, inside the upper main body 2a of the printer 1. The user interface board 202 is connected to the distribution board control IC 211 of the power distribution board 201, and outputs the detection result of the operation detection circuit 202a to the distribution board control IC 211. Outputting the detection result also corresponds to an instruction from the user interface board 202.

The print control board 203 is a general term for a plurality of operation control boards that control operations related to printing, and the operation control boards include a mechanical mechanism control board 301, a mechanical relay board 302, a mechanical relay board 303, and a motor control board 304. The image processing board 305, the ejection data processing board 306, the carriage control board 307, and the head control board 308 are included.

The mechanical mechanism control board 301 controls the drive of the transfer motor 125 that conveys the media M, the drive control of the carriage drive motor 114, the control of turning on and off the lighting LED that illuminates the inside of the printer 1, the HOME side of the carriage 22, and the FULL. It is a board that executes drive control of a sensor that detects whether or not it is located on the side. The mechanical mechanism control board 301 is arranged inside, for example, the lower main body 2b of the printer 1. The HOME side is the side provided with a maintenance mechanism for performing maintenance on the inkjet head 21 such as cleaning in the scanning direction of the carriage 22, and corresponds to the right side (-X side) of the printer 1 in the present embodiment. do. The FULL side indicates the side opposite to the HOME side in the scanning direction of the carriage 22, and in the present embodiment, indicates the left side (+ X side) of the printer 1.

In the present embodiment, the mechanical mechanism control board 301 controls the transfer motor 125 and the carriage drive motor 114 via the motor control board 304.

The mechanical relay board 302 is a relay board between the mechanical mechanism control board 301 and the mechanism arranged on the HOME side. The mechanical relay board 302 is arranged, for example, on the right side of the upper main body 2a of the printer 1. Examples of the mechanism arranged on the HOME side include a cleaning box that performs cleaning on the inkjet head 21, a motor for paper feed that conveys the media M onto the platen 41, and the like. The mechanical relay board 302 drives and controls, for example, cleaning by a cleaning box, and also drives and controls the motor during paper feed. The mechanical relay board 302 is included in the transport unit 105 as shown in FIG. 2 when the motor for paper feed is driven and controlled.

The mechanical relay board 303 is a relay board between the mechanical mechanism control board 301 and the mechanism arranged on the FULL side. The mechanical relay board 302 is arranged, for example, on the left side of the upper main body 2a of the printer 1. Examples of the mechanism arranged on the FULL side include a motor for paper feed that conveys the media M onto the platen 41. The mechanical relay board 303 is included in the transport unit 105 as shown in FIG. 2 when driving and controlling the motor for paper feed.

The motor control board 304 is a board that drives and controls the carriage drive motor 114 and the transfer motor 125 in accordance with the control of the mechanical mechanism control board 301. The motor control board 304 is arranged, for example, on the right side of the upper main body 2a of the printer 1. The carriage drive motor 114 is driven according to the control of the motor control board 304 to scan the carriage 22 in the scanning direction. The transport motor 125 is driven according to the control of the motor control board 304 to transport the media M at least in the transport direction.

The image processing board 305 is a board that mounts a circuit related to the image processing unit 108 and executes various processing such as resolution conversion processing, color conversion processing, and halftone processing on image data received from an external device. .. The image processing board 305 is arranged on the upper right side, for example, inside the upper main body 2a of the printer 1.

The ejection data processing board 306 is a substrate that mounts a circuit related to the ejection data processing unit 109 and executes rasterization processing, command addition processing, and the like on the print data processed by the image processing substrate 305. Further, the ejection data processing substrate 306 selects a nozzle for ejecting ink, an ejection amount, an ejection timing, a direction scanned by the carriage 22, a scanning amount of the carriage 22, and a carriage 22 based on the generated print data. Outputs a control signal that controls the scanning speed and the like. Further, the ejection data processing substrate 306 controls the transport unit 105 to control the transport amount for transporting the media M, the transport speed for transporting the media M, and the like, based on the print data obtained by executing the above-mentioned various processes. Output a signal. Further, the ejection data processing board 306 writes the amount of ink used for the above-mentioned chip. The ejection data processing board 306 is arranged on the upper right side, for example, inside the upper main body 2a of the printer 1.

The carriage control board 307 is a board arranged on the carriage 22, for example, a board on which an SOC (System-on-Chip) is mounted and each part of the carriage 22 is controlled. The carriage control board 307, for example, inputs a control signal input from the discharge data processing board 306 to the head control board 308.

The head control substrate 308 is a substrate arranged on the carriage 22 and is a substrate that controls ink ejection by the inkjet head 21. The head control board 308 outputs data for ejecting ink to the inkjet head 21 (for example, 2-bit data) based on a control signal input from the carriage control board 307, and controls ink ejection to the inkjet head 21. do.

The operation control board of this embodiment is roughly classified into a mechanical control board and a data processing board.

The mechanical control board indicates an operation control board that controls a mechanism related to printing such as a transfer motor 125, a carriage drive motor 114, a carriage 22, an inkjet head 21, sensors arranged on the HOME side and the FULL side, and a cleaning box. .. The operation control board corresponding to the mechanical control board in this embodiment is the mechanical mechanism control board 301, the mechanical relay board 302, the mechanical relay board 303, the motor control board 304, and the head control board 308.

The data processing board indicates an operation control board that processes data related to printing. In the present embodiment, the data processing board is an image processing board 305, a discharge data processing board 306, and a carriage control board 307.

The PC board 204 is a board on which a circuit related to the control unit 100, a circuit related to the storage unit 101, and a circuit related to the communication unit 102 are mounted, and is arranged on the upper right side of the upper main body 2a of the printer 1, for example.

The power distribution board 201 includes a distribution board control IC 211 and a power supply abnormality detection circuit 212. The distribution board control IC 211 is composed of, for example, an integrated circuit, and controls each part of the power distribution board 201. The distribution board control IC 211 includes a distribution board control circuit 211a and a distribution board storage circuit 211b (storage circuit).

The distribution board control circuit 211a includes, for example, a CPU (processor) and controls each part of the power distribution board 201.

The distribution board storage circuit 211b includes a non-volatile memory such as EEPROM and stores various data in a rewritable manner. Further, the distribution board storage circuit 211b stores the sequence DB 211c. The order DB2 11c will be described later.

The power supply abnormality detection circuit 212 is connected to the voltage conversion board 200 via the power supply state line DJL (described later), and is in the power supply state from the voltage conversion board 200 based on the signal output from the voltage conversion board 200. Detect anomalies. The abnormality of the power supply state from the voltage conversion board 200 indicates that, in the present embodiment, the connection between the voltage conversion board 200 and the commercial AC power supply DK is cut off, and the power supply from the voltage conversion board 200 is stopped.

As shown in FIG. 3, the power distribution board 201 includes the switch circuit SW1 to the switch circuit SW11, the power supply line DL1, the power supply line DL2, the state switching line JKL, the power supply state line DJL, and the power supply line DTL. And prepare. As described above, the power supply line DL1 is a line that supplies 42 volt (V) power and 24 volt (V) power. As described above, the power supply line DL2 is a line that supplies power of 12 volts (V). The state switching line JKL is provided between the distribution board control IC 211 and each of the switch circuit SW2 to the switch circuit SW11, and a signal for switching each state of the switch circuit SW2 to the switch circuit SW11 is input from the distribution board control IC 211. It is a line. The power supply status line DJL is a line in which a signal indicating the status of the commercial AC power supply DK is input from the voltage conversion board 200. The power-on line DTL is a line in which a signal indicating power-on to the printer 1 is input from the voltage conversion board 200.

The switch circuit SW1 is connected to the power-on line DTL, the power supply line DL1, and the user interface board 202. The switch circuit SW1 changes the state of the user interface board 202 to a state in which the power supply is stopped (hereinafter, referred to as a "stop state") according to the presence or absence of input of a signal indicating power on via the power on line DTL. To switch to the state of supplying power (hereinafter referred to as "supply state"). When the switch circuit SW2 is in the supply state, power of 24 volts (V) is supplied to the user interface board 202 from the power supply line DL1 via the switch circuit SW1.

The switch circuit SW2 is connected to the state switching line JKL, the power supply line DL1, and the mechanical mechanism control board 301. When a signal for switching the state is input from the distribution board control IC 211 via the state switching line JKL, the switch circuit SW2 changes the state of the mechanical mechanism control board 301 to the stopped state or the supply state based on the signal. Switch. When the switch circuit SW2 is in the supply state, 42 volts (V) of electric power is supplied from the power supply line DL1 to the mechanical mechanism control board 301 via the switch circuit SW2.

The switch circuit SW3 is connected to the state switching line JKL, the power supply line DL1, and the mechanical mechanism control board 301. When a signal for switching the state is input from the distribution board control IC 211 via the state switching line JKL, the switch circuit SW3 changes the state of the mechanical mechanism control board 301 to the stopped state or the supply state based on the signal. Switch. When the switch circuit SW3 is in the supply state, power of 24 volts (V) is supplied from the power supply line DL1 to the mechanical mechanism control board 301 via the switch circuit SW2.

The switch circuit SW4 is connected to the state switching line JKL, the power supply line DL1, and the mechanical relay board 302. When a signal for switching the state is input from the distribution board control IC 211 via the state switching line JKL, the switch circuit SW4 switches the state of the mechanical relay board 302 to the stopped state or the supply state based on the signal. .. When the switch circuit SW4 is in the supply state, power of 24 volts (V) is supplied from the power supply line DL1 to the mechanical relay board 302 via the switch circuit SW4.

The switch circuit SW5 is connected to the state switching line JKL, the power supply line DL1, and the mechanical relay board 303. When a signal for switching the state is input from the distribution board control IC 211 via the state switching line JKL, the switch circuit SW5 switches the state of the mechanical relay board 303 to the stopped state or the supply state based on the signal. .. When the switch circuit SW5 is in the supply state, power of 24 volts (V) is supplied from the power supply line DL1 to the mechanical relay board 303 via the switch circuit SW5.

The switch circuit SW6 is connected to the state switching line JKL, the power supply line DL1, and the motor control board 304. When a signal for switching the state is input from the distribution board control IC 211 via the state switching line JKL, the switch circuit SW6 switches the state of the motor control board 304 to the stopped state or the supply state based on the signal. .. When the switch circuit SW6 is in the supply state, 42 volts (V) of electric power is supplied from the power supply line DL1 to the motor control board 304 via the switch circuit SW6.

The switch circuit SW7 is connected to the state switching line JKL, the power supply line DL1, and the image processing board 305. When a signal for switching the state is input from the distribution board control IC 211 via the state switching line JKL, the switch circuit SW7 switches the state of the image processing board 305 to the stopped state or the supply state based on the signal. .. When the switch circuit SW7 is in the supply state, 42 volts (V) of electric power is supplied from the power supply line DL1 to the image processing board 305 via the switch circuit SW7.

The switch circuit SW8 is connected to the state switching line JKL, the power supply line DL1, and the discharge data processing board 306. When a signal for switching the state is input from the distribution board control IC 211 via the state switching line JKL, the switch circuit SW8 changes the state of the discharge data processing board 306 to the stopped state or the supply state based on the signal. Switch. When the switch circuit SW8 is in the supply state, power of 24 volts (V) is supplied from the power supply line DL1 to the discharge data processing board 306 via the switch circuit SW7.

The switch circuit SW9 is connected to the state switching line JKL, the power supply line DL1, and the head control board 308. When a signal for switching the state is input from the distribution board control IC 211 via the state switching line JKL, the switch circuit SW9 switches the state of the head control board 308 to the stopped state or the supply state based on the signal. .. When the switch circuit SW9 is in the supply state, power of 24 volts (V) is supplied to the carriage control board 307 from the power supply line DL1 via the head control board 308 via the switch circuit SW9.

The switch circuit SW10 is connected to the state switching line JKL, the power supply line DL1, and the head control board 308. When a signal for switching the state is input from the distribution board control IC 211 via the state switching line JKL, the switch circuit SW10 switches the state of the head control board 308 to the stopped state or the supply state based on the signal. .. When the switch circuit SW10 is in the supply state, 42 volts (V) of electric power is supplied from the power supply line DL1 to the head control board 308 via the switch circuit SW9.

The switch circuit SW11 is connected to the state switching line JKL, the power supply line DL2, and the PC board 204. When a signal for switching the state is input from the distribution board control IC 211 via the state switching line JKL, the switch circuit SW11 switches the state of the PC board 204 to the stopped state or the supply state based on the signal. When the switch circuit SW11 is in the supply state, power of 12 volts (V) is supplied to the PC board 204 from the power supply line DL2 via the switch circuit SW11.

The power supply status line DJL includes a voltage conversion board 200, a power supply abnormality detection circuit 212, a user interface board 202, a mechanical mechanism control board 301, a motor control board 304, an image processing board 305, and a discharge data processing board 306, respectively. Connect to. The signal input from the power supply status line DJL to the mechanical mechanism control board 301 is input to the mechanical relay board 302 and the mechanical relay board 303 via the mechanical mechanism control board 301. Further, the signal input from the power supply state line DJL to the discharge data processing board 306 is input to the carriage control board 307 via the discharge data processing board 306.

As described above, the printer 1 of the present embodiment includes a plurality of operation control boards. The printer 1 controls the power supply to the plurality of operation control boards in order to cause the plurality of operation control boards to execute predetermined operations such as operation stop, operation execution, and data writing accompanying the operation stop.

Here, a configuration in which power supply is controlled to a plurality of operation control boards at the same time is conceivable. However, in this configuration, for example, a power shortage may occur when a plurality of operation control boards perform an operation. The printer 1 may not be able to normally execute operations on a plurality of operation control boards.

Therefore, it is conceivable that the printer 1 is configured to supply power to each of the plurality of operation control boards in order without controlling the power supply at the same time. However, in this configuration, if the order of power supply is not appropriate, data to be written cannot be written when the operation is stopped, or the mechanism may malfunction at the start of operation, and complicated power supply control may be required.

Therefore, the printer 1 of the present embodiment executes the following operations, supplies electric power to the operation control board without requiring complicated control, and easily operates a plurality of operation control boards.

Hereinafter, the operation of the printer 1 of the present embodiment will be described by exemplifying a plurality of power supply modes.

<When the power is turned on>
First, the operation of the printer 1 of the present embodiment when the power is turned on will be described.

FIG. 4 is a flowchart showing the operation of the printer 1.

At the start of the flowchart of FIG. 4, it is assumed that the switch circuit SW1 to the switch circuit SW11 are in the stopped state.

As shown in FIG. 4, when the user instructs the printer 1 to turn on the power by operating a switch, inserting a cable into the commercial AC power supply DK, or the like (step S1), the voltage conversion board 200 is the power distribution board 201. A power-on signal indicating that the power has been turned on is input to the power-on line DTL of (step SA1).

When the power-on signal is input, the state of the switch circuit SW1 becomes the supply state, and the power distribution board 201 supplies 42 volts (V) of power to the user interface board 202 (step SA2).

When the power is supplied from the power distribution board 201, the user interface board 202 starts the operation and outputs a signal indicating that the power has been supplied to the distribution board control IC 211 of the power distribution board 201 (step SA3). The output of this signal corresponds to an instruction from the user interface board 202.

When the signal is input from the user interface board 202, the distribution board control circuit 211a of the distribution board control IC 211 has the switch circuit SW2 to the switch circuit SW11 based on the order data JD of the order DB211c stored in the distribution board storage circuit 211b. By switching each state of, the power supply state to the plurality of operation control boards and the PC board 204 is switched (step SA4).

The order DB2 11c is a database that stores a plurality of order data JDs that are data related to the order of switching the power supply state. The sequence DB211c of the present embodiment has order data JD1 related to the order when the power supply state is switched from the stop state to the supply state, and order data JD2 related to the order when the power supply state is switched from the supply state to the stop state. Store.

FIG. 5A is a diagram showing an example of ordinal data JD1.

The order data JD1 is used to switch the power supply state between the order field F1 that stores the order information indicating the order in which the power supply state is switched, the board field F2 that stores the board information indicating the board for which the power supply state is switched, and the board field F2. The switch circuit field F3, which indicates the switch circuit information to be switched, and the timing field F4, which stores the timing information indicating the timing for switching the power supply state, correspond to each other.

In the order data JD1 shown in FIG. 5A, the record R1 storing "1" in the order field F1 stores the board information indicating the "carriage control board" in the board field F2, and "switch circuit SW9" in the switch circuit field F3. The switch circuit information indicating "t1" is stored in the timing field F4.

Further, in the order data JD1 shown in FIG. 5A, the record R2 storing "2" in the order field F1 stores the board information indicating the "image processing board" in the board field F2, and the "switch circuit" in the switch circuit field F3. The switch circuit information indicating "SW7" is stored, and the timing information indicating "t2" is stored in the timing field F4.

In the order data JD1 shown in FIG. 5A, the record R3 storing "3" in the order field F1 stores the board information indicating the "discharge data processing board" in the board field F2, and "switch circuit SW8" in the switch circuit field F3. The switch circuit information indicating “t3” is stored in the timing field F4.

In the order data JD1 shown in FIG. 5A, the record R4 storing "4" in the order field F1 stores the board information indicating the "mechanical mechanism control board" in the board field F2, and stores the board information indicating the "mechanical mechanism control board" in the switch circuit field F3. The switch circuit information indicating "" and "switch circuit SW3" is stored, and the timing information indicating "t4" is stored in the timing field F4.

In the order data JD1 shown in FIG. 5A, the record R5 storing "5" in the order field F1 stores the board information indicating the "motor control board" in the board field F2, and "switch circuit SW6" in the switch circuit field F3. The switch circuit information indicating "t5" is stored in the timing field F4.

In the order data JD1 shown in FIG. 5A, the record R6 storing "6" in the order field F1 stores the board information indicating the "mechanical relay board" in the board field F2, and "switch circuit SW4" in the switch circuit field F3. The switch circuit information indicating "t6" is stored in the timing field F4.

In the order data JD1 shown in FIG. 5A, the record R7 storing "7" in the order field F1 stores the board information indicating the "mechanical relay board" in the board field F2, and "switch circuit SW5" in the switch circuit field F3. The switch circuit information indicating "t7" is stored in the timing field F4.

In the order data JD1 shown in FIG. 5A, the record R8 storing "8" in the order field F1 stores the board information indicating the "head control board" in the board field F2, and "switch circuit SW10" in the switch circuit field F3. The switch circuit information indicating "t8" is stored in the timing field F4.

In the order data JD1 shown in FIG. 5A, the record R9 storing "9" in the order field F1 stores the board information indicating "PC board" in the board field F2, and stores the "switch circuit SW11" in the switch circuit field F3. The switch circuit information shown is stored, and the timing information indicating "t9" is stored in the timing field F4.

As described above, the sequence data JD1 shown in FIG. 5A includes a carriage control board 307, an image processing board 305, a discharge data processing board 306, a mechanical mechanism control board 301, a motor control board 304, a mechanical relay board 302, and a mechanical relay board 303. The data for switching the power supply state is stored in the order of the head control board 308 and the PC board 204.

The timing information stored in the timing field F4 indicates the period from when the distribution board control IC receives the trigger for switching the power supply state to when the switching of the power supply state is started, and the larger the order, the larger the storage. The timing to be performed is a large value. Therefore, the timing information shown in FIG. 5A has larger values in the order of t1, t2, t3, t4, t5, t6, t7, t8, and t9.

FIG. 5B is a diagram showing an example of ordinal data JD2.

The order data JD2 corresponds to the order field F1, the board field F2, the switch circuit field F3, and the timing field F4.

As is clear from the comparison between FIGS. 5A and 5B, the order data JD2 when the power supply state is stopped stores the records in the reverse order of the order data JD1. That is, the sequence data JD2 includes a PC board 204, a head control board 308, a mechanical relay board 303, a mechanical relay board 302, a motor control board 304, a mechanical mechanism control board 301, a discharge data processing board 306, an image processing board 305, and a carriage control. Data for switching the power supply state is stored in the order of the board 307.

As with the order data JD1, the timing information stored in the timing field F4 indicates the period from when the distribution board control IC receives the trigger for switching the power supply state to the start of switching the power supply state, and the order is The larger the value, the larger the stored timing. Therefore, the timing information shown in FIG. 5B has larger values in the order of ta, tb, tc, td, te, tf, tg, th, and ti.

FIG. 6 is a timing chart showing switching of the power supply state for the operation control board and the PC board 204. In particular, the timing chart shown in FIG. 6 is a timing chart for switching the power supply state to the supply state according to the order data JD1 shown in FIG. 5A.

The timing chart A shown in FIG. 6 is a timing chart showing switching of the power supply state to the carriage control board 307. Further, the timing chart B is a timing chart showing switching of the power supply state to the image processing board 305. Further, the timing chart C is a timing chart showing switching of the power supply state to the discharge data processing board 306. Further, the timing chart D is a timing chart showing switching of the power supply state to the mechanical mechanism control board 301. Further, the timing chart E is a timing chart showing switching of the power supply state to the motor control board 304. Further, the timing chart F is a timing chart showing switching of the power supply state to the mechanical relay board 302. Further, the timing chart G is a timing chart showing switching of the power supply state to the mechanical relay board 303. Further, the timing chart H is a timing chart showing switching of the power supply state to the head control board 308. Further, the timing chart I is a timing chart showing switching of the power supply state to the PC board 204.

At timing t0, it is assumed that a signal indicating that power has been supplied from the user interface board 202 is input to the distribution board control IC 211. The distribution board control IC 211 starts switching the power supply state by using the input of the signal as a trigger.

When the period elapses from the timing t0 and reaches the timing t1, as shown in the timing chart A of FIG. 6, the distribution board control IC 211 sets the state of the switch circuit SW9 to the supply state via the state switching line JKL, and the carriage control board. The power supply state to 307 is switched from the stopped state to the supply state. When the electric power is supplied, the carriage control board 307 starts operating after the timing t1.

When the period further elapses and the timing t2 is reached, as shown in the timing chart B of FIG. 6, the distribution board control IC211 supplies the state of the switch circuit SW7 via the state switching line JKL to the image processing board 305. The power supply state of is switched from the stopped state to the supply state. The image processing board 305 starts operation when power is supplied from the power distribution board 201, and starts processing such as initialization of the CPU and initialization of the non-volatile memory such as RAM after the timing t2.

When the period further elapses and the timing t3 is reached, as shown in the timing chart C of FIG. 6, the distribution board control IC 211 sets the state of the switch circuit SW8 to the supply state via the state switching line JKL, and discharge data processing board 306. The power supply status to is switched from the stopped status to the supply status. When the electric power is supplied, the discharge data processing board 306 starts operation after the timing t3.

As described above, when the distribution board control IC 211 starts supplying power to the plurality of operation control boards when the power is turned on, the power supply state of the data processing board is switched to the supply state before the mechanical control board. That is, when the distribution board control IC 211 starts supplying power to a plurality of operation control boards, the mechanical mechanism control board 301, the motor control board 304, the mechanical relay board 303, the mechanical relay board 302, and the head control board 308 First, the power supply state to the carriage control board 307, the image processing board 305, and the discharge data processing board 306 is switched to the supply state.

The mechanical control board controls each mechanism based on the data processed by the data processing board. Therefore, if power is supplied to the mechanical control board before the data processing board, there is a risk that the corresponding mechanism may be erroneously controlled due to the fact that the value for controlling each mechanism (for example, the number of steppings) is not determined. There is. Therefore, when the distribution board control IC 211 starts supplying power to a plurality of operation control boards, the power supply state of the data processing board is switched to the supply state before the mechanical control board, so that the mechanical control board is erroneously controlled. Can be prevented.

When the period further elapses and the timing t4 is reached, as shown in the timing chart D of FIG. 6, the distribution board control IC 211 sets the states of the switch circuit SW2 and the switch circuit SW3 to the supply state via the state switching line JKL. , The power supply state to the mechanical mechanism control board 301 is switched from the stopped state to the supply state. The mechanical mechanism control board 301 starts operation when electric power is supplied, and after timing t3, executes activation processing such as alignment of the carriage 22 and removal of slack of the media M. By executing this startup process, the printer 1 is configured to be able to start printing in an optimum state.

When the period further elapses and the timing t5 is reached, as shown in the timing chart E of FIG. 6, the distribution board control IC 211 sets the state of the switch circuit SW6 to the supply state via the state switching line JKL, and sends the state to the motor control board 304. The power supply state of is switched from the stopped state to the supply state. The motor control board 304 starts operation when power is supplied.

As described above, when the distribution board control IC 211 starts supplying power to the plurality of operation control boards, the power supply state to the mechanical mechanism control board 301 is switched to the supply state before the motor control board 304. As described above, the motor control board 304 is a board that controls the transfer motor 125 and the carriage drive motor 114, and operates under the control of the mechanical mechanism control board 301. Here, if power is supplied to the motor control board 304 before the mechanical mechanism control board 301, the values for controlling the transfer motor 125 and the carriage drive motor 114 are not determined, so that there is a risk of erroneous control of these motors. There is. When erroneous control of these motors occurs, the carriage 22 unnecessarily moves in the scanning direction or the media M is conveyed in the conveying direction. Therefore, when the distribution board control IC 211 starts supplying power to a plurality of operation control boards, the motor control board is switched from the power supply state of the mechanical mechanism control board 301 to the supply state before the motor control board 304. It is possible to prevent the occurrence of erroneous control of 304 and prevent erroneous operation of the transfer motor 125 and the carriage drive motor 114.

When the period further elapses and the timing t6 is reached, as shown in the timing chart F of FIG. 6, the distribution board control IC211 supplies the state of the switch circuit SW4 via the state switching line JKL to the mechanical relay board 302. The power supply state of is switched from the stopped state to the supply state. When a further period elapses from the timing t6 and reaches the timing t7, as shown in the timing chart G of FIG. 6, the distribution board control IC 211 sets the state of the switch circuit SW5 to the supply state via the state switching line JKL, and mechanically relays the state. The power supply state to the board 303 is switched from the stopped state to the supply state.

As described above, when the distribution board control IC 211 starts supplying power to the plurality of operation control boards, the distribution board control IC 211 supplies the power supply state to the mechanical mechanism control board 301 before the mechanical relay board 302 and the mechanical relay board 303. Switch to the state. Like the motor control board 304, the mechanical relay board 302 and the mechanical relay board 303 operate under the control of the mechanical mechanism control board 301, and control the corresponding mechanism. Here, when electric power is supplied to the mechanical relay board 302 and the mechanical relay board 303 before the mechanical mechanism control board 301, the values for controlling the paper feed motor, the cleaning box, and the like are not determined. There is a risk of erroneous control of these mechanisms. Therefore, when the distribution board control IC 211 starts supplying power to a plurality of operation control boards, the power supply state of the mechanical relay board 302 and the mechanical relay board 303 are set to the power supply state of the mechanical mechanism control board 301 before the mechanical relay board 302 and the mechanical relay board 303. By switching, it is possible to prevent the occurrence of erroneous control of the mechanical relay board 302 and the mechanical relay board 303. In particular, in the present embodiment, it is assumed that the start-up operation of the mechanical mechanism control board 301 is completed at the timing t6, that is, the timing at which the power supply to the mechanical relay board 302 and the mechanical relay board 303 is started. Therefore, by switching the power supply state to the supply state in the above order and at the timing, when the mechanical mechanism control board 301 is executing the start-up operation, the mechanical relay board 302 and the mechanical relay board 303 No paper feed or cleaning. As a result, the mechanical mechanism control board 301 can more reliably execute the start-up operation so that the printer 1 can start printing in the optimum state.

When the period further elapses and the timing t8 is reached, as shown in the timing chart H of FIG. 6, the distribution board control IC211 supplies the state of the switch circuit SW10 via the state switching line JKL to the head control board 308. The power supply state of is switched from the stopped state to the supply state.

As described above, when the distribution board control IC 211 starts supplying power to the plurality of operation control boards, the distribution board control IC 211 switches the power supply state to the carriage control board 307 to the supply state before the head control board 308. The head control board 308 operates by controlling the control signal input from the carriage control board 307, and controls the ink ejection of the inkjet head 21. Here, if electric power is supplied to the head control board 308 before the carriage control board 307, the value for controlling the ink ejection is not determined, so that the inkjet head 21 may be erroneously controlled. In this case, the inkjet head 21 may malfunction and ink may be ejected unnecessarily. Therefore, when the distribution board control IC 211 starts supplying power to a plurality of operation control boards, the head control board 308 is switched from the power supply state of the carriage control board 307 to the supply state before the head control board 308. It is possible to prevent the occurrence of erroneous control.

When the period further elapses and the timing t9 is reached, as shown in the timing chart I of FIG. 6, the distribution board control IC211 supplies the state of the switch circuit SW10 via the state switching line JKL to the PC board 204. Switch the power supply state from the stopped state to the supply state.

As described above, when the distribution board control IC 211 starts supplying power to the plurality of operation control boards, the power supply state to the PC board 204 is set to the supply state after the image processing board 305 and the discharge data processing board 306. Switch. As described above, the PC board 204 is a board on which the circuit related to the control unit 100, the circuit related to the communication unit 102, and the circuit related to the storage unit 101 are mounted. Therefore, when power is supplied to the PC board 204 before the image processing board 305 and the ejection data processing board 306, the PC board 204 is supplied with power to the image processing board 305 and the ejection data processing board 306. However, there is a possibility that the image data is received from the external device and the image processing board 305 and the ejection data processing board 306 try to generate print data. In this case, since power is not supplied to the image processing board 305 and the ejection data processing board 306 and the operation cannot be executed, the PC board 204 determines that an error has occurred and processes the error (error). (Notification of the occurrence of the occurrence, etc.) may be executed. This misleads the user into thinking that an error has occurred. Therefore, when starting the power supply to the plurality of operation control boards, the distribution board control IC 211 switches the power supply state of the PC board 204 to the supply state after the image processing board 305 and the discharge data processing board 306. Therefore, the occurrence of the above-mentioned error can be prevented. In particular, in the present embodiment, it is assumed that the start-up operation of the image processing board 305 is completed at the timing t9, that is, the timing at which the power supply to the PC board 204 is started. Therefore, the PC board 204 causes the image data received from the external device to execute the processing while the image processing substrate 305 is executing the startup processing, and prevents the occurrence of a situation in which the image processing cannot be performed appropriately. can.

<At the time of transition to power saving mode>
Next, the operation of the printer 1 of the present embodiment at the time of transition to the power saving mode will be described. The power saving mode is an operation mode of the printer 1 and is an operation mode for suppressing power consumption.

FIG. 7 is a flowchart showing the operation of the printer 1.

At the start of the flowchart of FIG. 7, it is assumed that the switch circuit SW1 to the switch circuit SW11 are in the supply state.

As shown in FIG. 7, when the user instructs the printer 1 to shift to the power saving mode by operating the operation switch 71, the touch panel 70, or the like (step S2), the user interface board 202 is subjected to the operation detection circuit 202a. The operation of the instruction is detected, and a transition signal (detection result) indicating the transition to the power saving mode is output to the distribution board control IC 211 of the power distribution board 201 (step SB1). The output of this transition signal corresponds to an instruction from the user interface board 202.

The distribution board control circuit 211a of the distribution board control IC 211 has the switch circuit SW2 to the switch circuit SW11 based on the order data JD2 of the order DB211c stored in the distribution board storage circuit 211b when the transition signal is input from the user interface board 202. By switching each state of the above to the stopped state, the power supply state to the plurality of operation control boards and the PC board 204 is switched to the stopped state (step SB2).

FIG. 8 is a timing chart showing switching of the power supply state for the operation control board and the PC board 204. In particular, the timing chart shown in FIG. 8 is a timing chart for switching the power supply state to the supply state according to the order data JD2 shown in FIG. 5B.

The timing chart J shown in FIG. 8 is a timing chart showing switching of the power supply state to the PC board 204. Further, the timing chart K is a timing chart showing switching of the power supply state to the head control board 308. Further, the timing chart L is a timing chart showing switching of the power supply state to the mechanical relay board 303. Further, the timing chart M is a timing chart showing switching of the power supply state to the mechanical relay board 302. Further, the timing chart N is a timing chart showing switching of the power supply state to the motor control board 304. Further, the timing chart O is a timing chart showing switching of the power supply state to the mechanical mechanism control board 301. Further, the timing chart P is a timing chart showing switching of the power supply state to the discharge data processing board 306. Further, the timing chart Q is a timing chart showing switching of the power supply state to the image processing board 305. Further, the timing chart R is a timing chart showing switching of the power supply state to the carriage control board 307.

It is assumed that the transition signal is input from the user interface board 202 to the distribution board control IC 211 at the timing tz. The distribution board control IC 211 starts switching the power supply state by using the input of the transition signal as a trigger.

When the period elapses from the timing tz and reaches the timing ta, the distribution board control IC 211 sets the state of the switch circuit SW11 to the supply state via the state switching line JKL as shown in the timing chart J of FIG. 8, and the PC board 204 The power supply status to is switched from the supply status to the stopped status. When the power is stopped, the PC board 204 stops operating after the timing ta.

In this way, by first switching the power supply state to the PC board 204 from the plurality of operation control boards and the PC board 204 to the stop state, the printer 1 can be moved from the external device at the time of transition to the power saving mode. No image data is received. As a result, it is possible to reliably shift to the power saving mode without executing printing at the time of shifting to the power saving mode.

When the period further elapses and the timing tb is reached, as shown in the timing chart K of FIG. 8, the distribution board control IC 211 stops the state of the switch circuit SW10 via the state switching line JKL, and goes to the head control board 308. The power supply state of is switched from the supply state to the stop state. When the power is stopped, the head control board 308 stops operating after the timing tb.

In this way, when the power supply to the plurality of operation control boards is stopped, the power supply state to the head control board 308 is stopped before the carriage control board 307, so that the carriage control board is changed to the power saving mode. Since the operation can be stopped under the control of 307, the head control substrate 308 does not erroneously control the inkjet head 21. Therefore, the inkjet head 21 does not eject ink due to a malfunction when shifting to the power saving mode.

When the period further elapses and the timing ct is reached, as shown in the timing chart L of FIG. 8, the distribution board control IC 211 stops the state of the switch circuit SW5 via the state switching line JKL, and goes to the mechanical relay board 302. The power supply state of is switched from the supply state to the stopped state. Further, when the period further elapses and the timing td is reached, as shown in the timing chart M of FIG. 8, the distribution board control IC 211 stops the state of the switch circuit SW4 via the state switching line JKL, and the mechanical relay board. The power supply state to 303 is switched from the supply state to the stop state. The mechanical relay board 302 and the mechanical relay board 303 stop operating when the power supply is stopped.

In this way, when the power supply to the plurality of operation control boards is stopped, the power supply state to the mechanical relay board 302 and the mechanical relay board 303 is stopped before the mechanical mechanism control board 301. As a result, the operation can be stopped under the control of the mechanical mechanism control board 301 at the time of transition to the power saving mode, so that the mechanical relay board 302 and the mechanical relay board 303 are, for example, paper at the time of transition to the power saving mode. There is no erroneous control of the feed motor, cleaning box, etc.

When the period further elapses and the timing te is reached, as shown in the timing chart N of FIG. 8, the distribution board control IC 211 stops the state of the switch circuit SW6 via the state switching line JKL, and goes to the motor control board 304. The power supply state of is switched from the supply state to the stop state. The motor control board 304 stops operating when the power supply is stopped.

In this way, when the power supply to the plurality of operation control boards is stopped, the power supply state to the motor control board 304 is stopped before the mechanical mechanism control board 301. As a result, when the mode shifts to the power saving mode, the operation can be stopped under the control of the mechanical mechanism control board 301, so that the motor control board 304 does not erroneously control the conveyor motor 125, the carriage drive motor 114, and the like.

When the period further elapses and the timing tf is reached, as shown in the timing chart O of FIG. 8, the distribution board control IC 211 puts the states of the switch circuit SW2 and the switch circuit SW3 into the stopped state via the state switching line JKL. , The power supply state to the mechanical mechanism control board 301 is switched from the supply state to the stop state. The mechanical mechanism control board 301 stops operating when the power supply is stopped.

As described above, the distribution board control IC 211 switches the power supply state of the mechanical control board to the stop state before the data processing board when the power supply to the plurality of operation control boards is stopped at the transition to the power saving mode. That is, the distribution board control IC 211 precedes the carriage control board 307, the image processing board 305, and the ejection data processing board 306 when the power supply to the plurality of operation control boards is stopped at the time of transition to the power saving mode. , The mechanical mechanism control board 301, the motor control board 304, the mechanical relay board 303, the mechanical relay board 302, the head control board 308, and the PC board 204 are switched to the supply state.

Since the mechanical control board controls the corresponding mechanism based on the data processed by the data processing board, if the data processing board stops operating first, the value that controls the mechanism cannot be determined, and the mechanism is erroneously controlled. There is a risk of Therefore, when the power supply to the plurality of operation control boards is stopped, the distribution board control IC 211 shifts to the power saving mode by switching the power supply state of the mechanical control board to the stopped state before the data processing board. It is possible to prevent the occurrence of erroneous control of the mechanical control board at times.

When the period further elapses and the timing tg is reached, as shown in the timing chart P of FIG. 8, the distribution board control IC 211 stops the state of the switch circuit SW8 via the state switching line JKL, and discharge data processing board 306. The power supply status to is switched from the supply status to the stopped status.

When the period further elapses and the timing th is reached, as shown in the timing chart Q of FIG. 8, the distribution board control IC 211 puts the state of the switch circuit SW7 into the supply state via the state switching line JKL, and sends the state to the image processing board 305. The power supply state of is switched from the supply state to the stopped state.

When the period further elapses and the timing ti is reached, as shown in the timing chart R of FIG. 8, the distribution board control IC211 supplies the state of the switch circuit SW9 via the state switching line JKL to the carriage control board 307. The power supply state of is switched from the supply state to the stopped state.

In this way, when the printer 1 shifts to the power saving mode, the power supply state to the operation control board is switched to the stopped state in an appropriate preset order, so that the operation control can be easily performed without requiring complicated control. The board can be stopped.

When the printer 1 is in the power saving mode, power is supplied to the user interface board 202. The effect of this will be described later. When the printer 1 is in the power saving mode, the user interface board 202 shifts its operation mode to the power saving mode. The power saving mode of the user interface board 202 indicates an operation mode in which the user's operation can be detected by the operation detection circuit 202a, but the information is not displayed due to the backlight of the display panel being turned off or the like.

<When returning from power saving mode>
Next, the operation of the printer 1 of the present embodiment at the time of returning from the power saving mode will be described.

FIG. 9 is a flowchart showing the operation of the printer 1.

At the start of the flowchart of FIG. 9, it is assumed that the operation mode of the printer 1 is the power saving mode, the switch circuit SW1 is in the supply state, and the states of the switch circuit SW2 to the switch circuit SW11 are in the stopped state. Further, it is assumed that the operation mode of the user interface board 202 is also a power saving mode.

As shown in FIG. 9, when the user instructs the printer 1 to return from the power saving mode by operating the operation switch 71, the touch panel 70, or the like (step S3), the user interface board 202 is subjected to the operation detection circuit 202a. The operation indicating the instruction is detected, and a return signal (detection result) indicating recovery from the power saving mode is output to the distribution board control IC 211 of the power distribution board 201 (step SC1).

The distribution board control circuit 211a of the distribution board control IC 211 has the switch circuit SW2 to the switch circuit SW11 based on the order data JD1 of the order DB211c stored in the distribution board storage circuit 211b when the return signal is input from the user interface board 202. By switching each state of the above to the supply state, the power supply state to the plurality of operation control boards and the PC board 204 is switched to the supply state (step SC2).

In step SC2, the distribution board control circuit 211a of the distribution board control IC 211 switches the power supply state to the plurality of operation control boards and the PC board 204 to the supply state in the order and timing as shown in FIG. To go. As a result, even when returning from the power saving mode, the same effect as the above-mentioned effect at the time of turning on the power is obtained.

Next, the state acquisition circuit 202b of the user interface board 202 acquires the state of each operation control board (step SC3). Next, the user interface board 202 determines whether or not the states of all the operation control boards are in the activated state based on the acquisition of the state acquisition circuit 202b (step SC4).

When it is determined that the states of all the operation control boards are not in the activated state (step SC4: NO), the user interface board 202 waits for a predetermined period (for example, 0.5 seconds) (step SC5), and then again. The process of step SC4 is executed. On the other hand, when it is determined that all the operation control boards are in the activated state (step SC4: YES), the user interface board 202 returns its operation mode from the power saving mode and shifts to the normal mode (step SC4: YES). Step SC6). Here, the normal mode of the user interface board 202 indicates an operation mode in which the user's operation can be detected by the operation detection circuit 202a and the information is displayed by turning on the backlight of the display panel or the like.

Further, when the printer 1 returns from the power saving mode, the power supply state to the operation control board is switched to the stop state in an appropriate preset order, so that the operation control board can be easily operated without requiring complicated control. The operation can be started. That is, the printer 1 can easily recover from the power saving mode.

Further, the user interface board 202 is supplied with power even if the operation mode of the printer 1 is the power saving mode. As described above, the return from the power saving mode of the printer 1 is executed by the user interface board 202. Therefore, by operating only the user interface board 202 in the power saving mode, the user can easily restore the printer 1 by operating the operation switch 71 and the touch panel 70. Further, since the output from the user interface board 202 is used as a trigger to return from the power saving mode, the printer 1 can prevent the printer 1 from accidentally returning from the power saving mode without intervening the user's operation. Along with this, it is possible to prevent unnecessary power consumption at a timing not intended by the user.

<When power supply is cut off>
Next, the operation of the printer 1 of the present embodiment when the power supply is cut off will be described. As an embodiment of power supply cutoff, for example, a case where the connection between the commercial AC power supply DK and the voltage conversion board 200 is cut off due to a sudden disconnection of an outlet or the like is exemplified.

FIG. 10 is a flowchart showing the operation of the printer 1.

At the start of the flowchart of FIG. 10, it is assumed that the switch circuit SW1 to the switch circuit SW11 are in the supply state.

The state acquisition circuit 202b of the user interface board 202 acquires the state of each operation control board (step SD1). The user interface board 202 outputs information indicating the state of each operation control board acquired by the state acquisition circuit 202b to the distribution board control IC 211 of the power distribution board 201.

Next, the distribution board control circuit 211a of the distribution board control IC 211 changes the power supply state from the supply state to the stop state when a power supply stop signal (described later) is input based on the information indicating the state of each operation control board. Generate order data related to the order when switching (step SD2). For example, it is assumed that the state of the image processing board 305 is in the stopped state and the state of the discharge data processing board 306 is in the activated state. In this case, the distribution board control circuit 211a generates order data for the image processing board 305 to put the power supply state into the stop state before the discharge data processing board when the power supply state shifts to the stop state. By generating such order data, the discharge data processing board 306 can write data to be written more reliably with limited power.

The distribution board control circuit 211a shows the order indicated by the order data generated in step SD2 and the order data when the already stored power supply stop signal is input from the order DB 211c stored in the distribution board storage circuit 211b. It is determined whether the order matches (step SD3). In the process of step SD3, if the order DB 211c stored in the distribution board storage circuit 211b does not have the order data when the power stop signal is input, the distribution board control circuit 211a has the order data D2 when the power is stopped. Compare with the order indicated by.

When it is determined that they do not match (step SD3: NO), the distribution board control circuit 211a stores the order data generated in step SD2 in the distribution board storage circuit 211b as the order data when the power stop signal is input. (Step SD4).

On the other hand, when the matching determination is made (step SD3: YES), the power supply abnormality detection circuit 212 of the power distribution board 201 determines whether or not the power supply stop signal is input from the voltage conversion board 200 (step SD5).

When the connection between the commercial AC power supply DK and the voltage conversion board 200 is cut off, the state of the commercial AC power supply DK as seen from the voltage conversion board 200 is the state in which the power supply is stopped. The voltage conversion board 200 indicates to the power supply state line DJL of the power distribution board 201 that the state of the commercial AC power supply DK is in the power supply stop state when the state of the commercial AC power supply DK is in the power supply stop state. It is configured to input a power stop signal. For example, the voltage conversion board 200 inputs a signal having a voltage level of "Low" as the signal to the power supply state line DJL.

When the power supply stop signal is input, the power supply abnormality detection circuit 212 of the power distribution board 201 detects that an abnormality has occurred in the power supply state from the voltage conversion board 200, and stops the power supply input from the voltage conversion board 200. The signal is input to the user interface board 202 and the operation control board via the power supply state line DJL (step SD6).

Each of the user interface board 202 and the operation control board executes a process corresponding to the input of the power stop signal when the power stop signal is input via the power distribution board 201 (step SD7).

Here, step SD7 will be described.

When the power stop signal is input, the user interface board 202 outputs a signal indicating that the power stop signal has been input to the distribution board control IC 211 of the power distribution board 201. The output of this signal corresponds to an instruction from the user interface board 202.

The mechanical mechanism control board 301, the mechanical relay board 302, the mechanical relay board 303, and the motor control board 304 stop the operation of the mechanical to be controlled and stop their own operation. For example, the mechanical mechanism control board 301 stops driving a sensor that detects whether or not the carriage 22 is located on the HOME side and the FULL side, and stops its own operation. Further, for example, when the mechanical relay board 302 and the mechanical relay board 303 are driving a motor for paper feed, the motor is stopped and its own operation is stopped. Further, for example, when the transfer motor 125 or the carriage drive motor 114 is being driven, the motor control board 304 stops these motors and stops its own operation.

When the power stop signal is input, the image processing board 305 writes data to be written to the storage unit 101. For example, when the image processing board 305 has executed image processing on image data, the image processing board 305 writes data indicating how far the image processing has been executed on the image data in the storage unit 101. As a result, when the power is supplied again, the image processing board 305 can execute the image processing on the image data from the interrupted image processing.

When the power supply stop signal is input, the discharge data processing board 306 executes writing of data to be written to the storage unit 101 in the same manner as the image processing board 305. For example, when the ejection data processing board 306 outputs a control signal to the carriage control board 307 based on the generated print data, to what extent of the control signals to be output to the carriage control board 307 the control signal is output. It is written in the storage unit 101. Further, the ejection data processing board 306 writes the amount of ink used until the power stop signal is input to the above-mentioned chip.

Returning to the description of the flowchart shown in FIG. 10, when the distribution board control circuit 211a of the distribution board control IC 211 receives a signal indicating that a power stop signal has been input from the user interface board 202, the order data possessed by the sequence DB 211c is input. Of these, by switching each state of the switch circuit SW2 to the switch circuit SW11 to the stop state based on the order data when the power stop signal is input, the operation control board and the PC board 204 can be connected to the plurality of operation control boards and the PC board 204. The power supply state is switched to the stopped state (step SD8).

In step SD8, when the order data when the power stop signal is input is the order data D2 shown in FIG. 5B, the distribution board control circuit 211a of the distribution board control IC 211 is in the order and timing as shown in FIG. Switches the power supply state to the plurality of operation control boards and the PC board 204 to the stopped state. That is, the distribution board control IC 211 switches the power supply state to the stop state in the order of the mechanical control board and the data processing board. When the power is cut off, the power supply from the commercial AC power supply DK is cut off. Therefore, when the printer 1 is provided with a capacitor for accumulating electric charges, it is necessary to have the data processing board write data with the electric power stored in the capacitor when the power is cut off. Here, if power is supplied to the mechanical control board, there is a possibility that the capacitor cannot supply the power required for the data processing board to execute data writing. Therefore, by switching the power supply state to the mechanical control board before the data processing board, data can be appropriately written to the data processing board with limited power even when there is no power supply from the commercial AC power supply DK. Can be made.

Further, for example, it is assumed that the sequence data when the power stop signal is input is the state in which the image processing board 305 is stopped and the state of the discharge data processing board 306 is the start state. In the case of the above-mentioned order data, the distribution board control IC 211 puts the power supply state of the image processing board 305 into a stop state before the discharge data processing board 306. As a result, the discharge data processing board 306 can write data to be written more reliably with limited power. In this way, the order data when the power stop signal is input can be the order data according to the state of each operation control board, and the printer 1 appropriately considers the state of each operation control board. The power supply to the operation control board can be controlled in any order.

When data is written to each of the data processing boards, the power supply is stopped as soon as the charge supply from the capacitor is completed, and the operation is stopped accordingly.

As described above, the printer 1 (printing device) has a user interface board 202 having an operation detection circuit 202a (detection circuit) for detecting the user's operation, and a plurality of operation control boards for controlling the operation related to printing. It is mounted on the printed control board 203 (control board), the power distribution board 201 (power supply board) that supplies power to the operation control board, and the power distribution board 201, connected to the user interface board 202, and operated by the user interface board 202. It includes a distribution board control IC 211 (power supply switching circuit) that switches the power supply state to the control board. The distribution board control IC 211 is connected to the user interface board 202, and switches the power supply state to the plurality of operation control boards according to a predetermined order based on the instruction from the user interface board 202. The operation control board executes a predetermined operation (operation stop, operation start, data writing accompanying the operation stop, etc.) in response to a change in the power supply state from the power distribution board 201. Further, the user interface board 202 may control the operation control board by instructing the user to pause printing, restart printing, interrupt printing, print instructions by designating an image, and the like.

According to this configuration, the distribution board control IC 211 can switch the power supply state to the operation control board in an appropriate order based on the instruction from the user interface board 202, and can easily switch the power supply state to the operation control board without requiring complicated control. It is possible to control the power supply to multiple operation control boards.

Further, the user interface board 202 has a state acquisition circuit 202b for acquiring the state of the operation control board. The distribution board control IC 211 switches the power supply state to the operation control board based on the instruction from the user interface board 202 according to the state of the operation control board acquired by the state acquisition circuit 202b. That is, the distribution board control IC 211 generates order data according to the state of the operation control board, and switches the power supply state in the order indicated by the generated order data.

According to this configuration, the printer 1 switches the power supply state to the operation control board based on the instruction from the user interface board 202 according to the state of the operation control board, so that the state of the operation control board is changed when the power is supplied. Can be taken into consideration, and the power supply to a plurality of operation control boards can be appropriately controlled.

Further, the power distribution board 201 has a power supply abnormality detection circuit 212 for detecting an abnormality in the power supply state. The user interface board 202 stores the switching order of the power supply state (the order indicated by the order data when the power stop signal is input) when the power supply state is abnormal in the distribution board storage circuit 211b (storage circuit). .. When the power supply abnormality detection circuit 212 detects an abnormality in the power supply state, the distribution board control IC 211 switches the power supply state according to the order (switching order) indicated by the order data stored in the distribution board storage circuit 211b.

According to this configuration, when the power supply state becomes abnormal, the printer 1 determines the power supply state according to the order indicated by the order data when the power stop signal stored in the distribution board storage circuit 211b is input. Since the switching is performed, even if the power supply state becomes abnormal, the power supply to a plurality of operation control boards can be controlled in an appropriate order.

Further, the print control board 203 includes a mechanical control board for controlling the mechanism and a data processing board for processing data as the operation control board. The distribution board control IC 211 switches the power supply state to the mechanical control board and the data processing board in a predetermined order.

According to this configuration, the distribution board control IC 211 switches the power supply state between the mechanical control board and the data processing board, so that the mechanical control board and the data processing board can execute predetermined operations in an appropriate order. Therefore, the mechanical control board and the data processing board can be easily operated without requiring complicated control.

Further, when the distribution board control IC 211 stops the power supply to the mechanical control board and the data processing board, the power supply state is switched to the stopped state in the order of the mechanical control board and the data processing board. Further, when the distribution board control IC 211 starts supplying power to the mechanical control board and the data processing board, the power supply state is switched to the supply state in the order of the data processing board and the mechanical control board.

According to this configuration, the power supply state is switched to the stopped state in the order of the mechanical control board and the data processing board, and the power supply state is switched to the supply state in the order of the data processing board and the mechanical control board to stop the power supply. At the start and the start, the mechanical control board and the data processing board can be operated in an appropriate order.

Further, the operation detection circuit 202a is configured to be able to detect any operation of shifting to the power saving mode or returning from the power saving mode for the operation mode of the printer 1. The user interface board 202 inputs the detection result of the operation detection circuit 202a (a transition signal indicating a transition to the power saving mode or a return signal indicating a return from the power saving motor) to the distribution board control IC 211. When the input detection result indicates the transition to the power saving mode, the distribution board control IC 211 switches the power supply state to the stopped state in the order of the mechanical control board and the data processing board. Further, when the input detection result indicates the return to the power saving mode, the distribution board control IC 211 switches the power supply state to the supply state in the order of the data processing board and the mechanical control board.

According to this configuration, the power supply state between the mechanical control board and the data processing board is switched in an appropriate order according to either the operation of shifting to the power saving mode or returning from the power saving mode. Therefore, the printer 1 can easily operate the mechanical control board and the data processing board when shifting to the power saving mode and when returning from the power saving mode.

Further, the power distribution board 201 is configured to be able to supply power to the user interface board 202. The power distribution board 201 supplies power to the user interface board 202 even when the operation mode of the printer 1 is the power saving mode.

As described above, the return from the power saving mode of the printer 1 is executed by the user interface board 202. Therefore, by operating only the user interface board 202 in the power saving mode, the user can quickly return the printer 1 from the power saving mode by operating the operation switch 71 and the touch panel 70. Further, in the power saving mode, only the user interface board 202 needs to be supplied with power, so that unnecessary power consumption can be significantly suppressed. Further, since the output from the user interface board 202 is used as a trigger to return from the power saving mode, the printer 1 can prevent the printer 1 from accidentally returning from the power saving mode without intervening the user's operation. Along with this, it is possible to prevent unnecessary power consumption at a timing not intended by the user.

Further, the power distribution board 201 is configured to be able to supply power to the mechanical control board and the data processing board based on the commercial AC power supply DK. When the state of the commercial AC power supply DK becomes the state of power supply stop, the mechanical control board stops the operation of the mechanism and stops the operation. When the state of the commercial AC power supply DK becomes the state of power supply stop, the data processing board stops the operation after executing the writing of the data to be written to the storage unit 101 or the above-mentioned chip.

According to this configuration, when the state of the commercial AC power supply DK becomes the state of power supply stop, the operation of the mechanical control board is stopped and the data to be written to the data processing board is written. Therefore, the printer 1 can appropriately operate the data processing board with limited power even when the power supply from the commercial AC power supply DK is stopped.

It should be noted that the above-described embodiment shows only one aspect of the present invention, and can be arbitrarily modified and applied within the scope of the present invention.

For example, the order data JD shown in FIGS. 5A and 5B is an example, and the order of switching the power supply state is not limited to the order data JD shown in FIGS. 5A and 5B. It may be different depending on the type of the substrate provided in the printer 1. Further, the ordinal data JD may be configured to be modifiable by the user. As a result, the operation control board and the PC board 204 can be operated in the order desired by the user. However, the order of power supply between the mechanical control board and the data processing board is preferably the above-mentioned order from the viewpoint of achieving the above-mentioned effects.

Further, for example, in the above-described embodiment, as a mode for switching the power supply state, the time of turning on the power, the time of shifting to the power saving mode, the time of returning to the power saving mode, and the time of cutting off the power supply are exemplified. The embodiments are not limited to these.

Further, for example, in the above-described embodiment, the configuration in which the user interface board 202 monitors the state of each operation control board and acquires the state of each operation control board has been described, but the PC board 204 uses each operation control board. It may be configured to monitor. In this case, the state acquisition circuit 202b of the user interface board 202 acquires the state of each operation control board from the PC board 204. Even in a configuration in which the PC board 204 acquires the state of each operation control board, the same effect as described above can be obtained.

Further, for example, the processing units of FIGS. 4, 7, 9, and 10 are divided according to the main processing contents in order to make the processing of the printer 1 easy to understand, and are the processing units. The present invention is not limited by the method of division and the name. The processing of the printer 1 may be divided into many processing units according to the processing content. Further, one processing unit may be divided so as to include more processing.

Further, each functional unit shown in FIG. 2 shows a functional configuration, and a specific mounting form is not particularly limited. That is, it is not always necessary to implement hardware corresponding to each functional unit individually, and it is of course possible to configure a configuration in which the functions of a plurality of functional units are realized by executing a program by one processor. Further, a part of the functions realized by the software in the above-described embodiment may be realized by the hardware, or a part of the functions realized by the hardware may be realized by the software. In addition, the specific detailed configuration of each other part of the printer 1 can be arbitrarily changed without departing from the spirit of the present invention.

1 ... Printer (printing device), 21 ... Inkjet head, 22 ... Carriage, 200 ... Voltage conversion board, 200a ... First conversion circuit, 200b ... Second conversion circuit, 200c ... Third conversion circuit, 201 ... Power distribution board ( Power supply board), 202 ... User interface board, 202a ... Operation detection circuit (detection circuit), 202b ... State acquisition circuit, 203 ... Print control board (control board), 204 ... PC board, 211 ... Distribution board control IC (power supply switching) Circuit), 211a ... Distribution board control circuit, 211b ... Distribution board storage circuit (storage circuit), 212 ... Power supply abnormality detection circuit, 301 ... Mechanical mechanism control board (operation control board, mechanical control board), 302 ... Mechanical relay board (Operation control board, mechanical control board), 303 ... Mechanical relay board (operation control board, mechanical control board), 304 ... Motor control board (operation control board, mechanical control board), 305 ... Image processing board (operation control board, Data processing board), 306 ... Discharge data processing board (operation control board, data processing board), 307 ... Carriage control board (operation control board, data processing board), 308 ... Head control board (operation control board, mechanical control board) , 211c ... Order DB, DJL ... Power status line, DK ... Commercial AC power supply, DL1 ... Power supply line, DL2 ... Power supply line, DTL ... Power on line, JKL ... Status switching line, SW1 to SW11 ... Switch circuit.

Claims (5)

A user interface board with a detection circuit that detects user operations,
A control board having a plurality of operation control boards for controlling operations related to printing based on the output from the detection circuit, and
A power supply board that supplies electric power to the operation control board and the user interface board,
A power switching circuit for switching the power supply state to the operation control board is provided.
The user interface board has a state acquisition circuit for acquiring the state of the operation control board.
The power supply switching circuit is connected to the user interface board, and the power supply state to the operation control board is based on an instruction from the user interface board according to the state of the operation control board acquired by the state acquisition circuit. To switch,
Printing equipment. The power supply board has a power supply abnormality detection circuit that detects an abnormality in the power supply state.
The user interface board stores the switching order of the power supply state when the power supply state is abnormal in the storage circuit.
When the power supply abnormality detection circuit detects an abnormality in the power supply state, the power supply switching circuit switches the power supply state according to the switching order stored in the storage circuit.
The printing apparatus according to claim 1 . The detection circuit is configured to be able to detect any operation of transition to the power saving mode or return from the power saving mode with respect to the operation mode of the printing apparatus.
The control board includes, as the operation control board, a mechanical control board that controls a mechanism and a data processing board that processes data.
The user interface board inputs the detection result of the detection circuit to the power supply switching circuit.
When the input detection result indicates the transition to the power saving mode, the power switching circuit switches the power supply state to the stopped state in the order of the mechanical control board and the data processing board, and the input detection result is obtained. When indicating the return to the power saving mode, the power supply state is switched to the supply state in the order of the data processing board and the mechanical control board.
The printing apparatus according to claim 1 or 2 . The power supply board is configured to be able to supply power to the user interface board.
The power supply board supplies power to the user interface board even when the operation mode of the printing device is the power saving mode.
The printing apparatus according to claim 3 . A control method for a printing device including a user interface board having a detection circuit for detecting a user's operation and a control board having a plurality of operation control boards for controlling operations related to printing based on an output from the detection circuit. There,
The user interface board has a state acquisition circuit for acquiring the state of the operation control board.
The power supply board supplies power to the operation control board and the user interface board,
The power supply switching circuit connected to the user interface board and switching the power supply state to the operation control board is based on the instruction from the user interface board according to the state of the operation control board acquired by the state acquisition circuit. , Switching the power supply state to the operation control board,
How to control the printing device.

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