JP6421603B2 - Printing apparatus, printing apparatus control method, and printing system - Google Patents

Description

  The present invention relates to a printing apparatus, a printing apparatus control method, and a printing system.

  Conventionally, when a control program (firmware) is rewritten, a printing apparatus (printer) that performs rewriting preferentially based on a rewrite command preceding rewrite data necessary for rewriting is known (for example, see Patent Document 1). ).

JP 2007-245603 A

Here, when the control program of the printing apparatus is modified, such as rewriting, there is a need to allow a user who does not have specialized knowledge to modify the program easily and accurately.
The present invention has been made in view of the above-described circumstances, and an object thereof is to enable a user who does not have specialized knowledge to easily and accurately modify a control program.

In order to achieve the above object, a printing apparatus according to the present invention controls a printing unit that executes printing on a recording medium, a reception buffer that receives a command, and controls the printing unit based on the received command in a first mode. A control unit that performs, when the first transition command is received in the first mode, the control unit clears the reception buffer and shifts the mode from the first mode to the second mode. When the process based on the received command is executed and the return command is received, the reception buffer is cleared to shift from the second mode to the first mode, and when the second shift command is received, the reception buffer Is cleared, and the process shifts to a third mode in which processing relating to modification of the control program related to the control of the printing unit can be executed.
According to the configuration of the present invention, a user who does not have specialized knowledge can easily and accurately modify the control program.

In the printing apparatus of the present invention, the first transition command, the second transition command, and the return command are executed in preference to other unprocessed commands, and are executed even in an offline state. It is an immediate execution command.
According to the configuration of the present invention, the printing apparatus can immediately shift to each mode based on each received command.

In the printing apparatus according to the aspect of the invention, the second mode is a mode in which processing based on a received command can be executed even in an offline state, and the control unit relates to the control program in the second mode. When a command for requesting an information response is received, information related to the control program is acquired and responded.
According to the configuration of the present invention, the printing apparatus provides information related to the control program to the external apparatus during the transition to the second mode, and the determination result of necessity of modification of the control program based on the provided information by the external apparatus Depending on the situation, you can switch to the appropriate mode.

In the printing apparatus of the present invention, the control unit permits reception of control program related data that is data related to modification of the control program by a plurality of communication interfaces in the third mode, and the control program related data When the reception is completed, the process shifts to a fourth mode in which processing relating to modification of the control program based on the control program related data can be executed.
According to the configuration of the present invention, the printing apparatus shifts to the modification execution mode after the reception of the control program related data is completed, and executes the modification of the control program based on the control program related data. Therefore, it is possible to prevent the modification of the control program from failing.

In the printing apparatus according to the aspect of the invention, the control unit may perform a reset after completing the process related to the modification of the control program based on the control program-related data, and then restart after the reset, and then enter the first mode. It is characterized by migrating.
According to the configuration of the present invention, the printer can be brought into a state in which the process based on the control program after the modification can be normally executed after the process related to the modification of the control program is performed.

In order to achieve the above object, the present invention provides a method for controlling a printing apparatus, wherein the first transition command is received in the first mode in which the control of the printing unit can be executed based on the received command. The reception buffer is cleared to shift from the first mode to the second mode. In the second mode, when a process based on the received command is executed and a return command is received, the reception buffer is cleared and the second mode is cleared. When the mode is shifted to the first mode and the second shift command is received, the reception buffer is cleared, and the mode is shifted to the third mode in which processing relating to the control program modification related to the control of the printing unit can be executed. It is characterized by.
According to the configuration of the present invention, a user who does not have specialized knowledge can easily and accurately modify the control program.

In order to achieve the above object, the present invention provides a printing system including a printing device and a control device that communicates with the printing device, the printing device printing on a recording medium; A reception buffer that receives a command from the control device; and a control unit that controls the printing unit based on the received command in the first mode, wherein the control unit is configured to control the control device in the first mode. The first transition command is received from the first mode, the reception buffer is cleared and the first mode is shifted to the second mode. In the second mode, processing based on the command received from the control device is executed, When a return command is received from the control device, the reception buffer is cleared, the second mode is shifted to the first mode, and the control device is shifted to the second mode. When receiving the command, and clearing the receive buffer, characterized in that it comprises a control unit that shifts the process relating to modification of a control program according to the control of the printing unit to executable third mode.
According to the configuration of the present invention, a user who does not have specialized knowledge can easily and accurately modify the control program.

1 is a block diagram showing a functional configuration of a printing system according to an embodiment. 6 is a flowchart illustrating operations of a host computer and a printing apparatus. 6 is a flowchart illustrating operations of a host computer and a printing apparatus. The figure which shows the transition of an operation mode.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram illustrating a functional configuration of a printing system 5 according to the present embodiment.
As shown in FIG. 1, the printing system 5 includes a printing apparatus 1 and a host computer 2 (control apparatus) connected to the printing apparatus 1 so as to be communicable.

The printing apparatus 1 is a line thermal printer that stores roll paper and records dots by forming dots on the stored roll paper with a line-type thermal head.
As illustrated in FIG. 1, the printing apparatus 1 includes a control unit 10, a storage unit 11, an input unit 12, a communication unit 13, and a printing unit 14.

  The control unit 10 includes a CPU, ROM, RAM, and other peripheral circuits, and controls the printing apparatus 1.

  The storage unit 11 includes a nonvolatile memory and stores various data. The storage unit 11 stores the installed firmware FW. The control unit 10 reads out and executes the firmware FW (control program), thereby controlling each unit of the printing apparatus 1 including the printing unit 14 described later.

The input unit 12 includes a touch panel 121 and an operation switch 122.
The touch panel 121 includes a display panel and a touch sensor arranged on the display panel. The display panel includes a liquid crystal display panel and the like, and displays various information under the control of the control unit 10. The touch sensor detects a user's touch operation and outputs it to the control unit 10. The control unit 10 executes processing corresponding to the touch operation based on the input from the touch sensor.
The operation switch 122 includes various switches such as a power switch and a feed switch. The operation switch 122 detects a user operation on the switch and outputs the operation to the control unit 10. Based on the input from the operation switch 122, the control unit 10 executes processing corresponding to the user's operation.

The communication unit 13 communicates with an external device (including the host computer 2) connected via the first communication interface 131 or the second communication interface 132 according to a predetermined communication standard under the control of the control unit 10.
The first communication interface 131 is a communication interface that communicates according to USB (communication standard), and includes an interface board having a USB port, a communication module mounted on the interface board, and the like. In the present embodiment, the host computer 2 is connected to the printing apparatus 1 via the first communication interface 131 and communicates with the printing apparatus 1 according to USB.
The second communication interface 132 is a communication interface that communicates according to a predetermined serial communication standard other than USB, such as RS232C, and has an interface board having a port according to the predetermined serial communication standard, and a communication module mounted on the interface board Etc.
Note that the communication unit 13 may include a communication interface according to another communication standard (including a communication standard related to wireless communication).

  The printing unit 14 is a transport mechanism that transports roll paper housed in the casing of the printing apparatus 1, a printing mechanism that forms dots on the roll paper by a thermal head, and prints an image. The roll paper is cut at a predetermined position. Various mechanisms relating to recording on roll paper, such as a cutting mechanism to perform.

The host computer 2 is a device that is communicably connected to the printing apparatus 1 and controls the printing apparatus 1.
As shown in FIG. 2, the host computer 2 includes a host control unit 20 and a host communication unit 21.
The host control unit 20 includes a CPU, ROM, RAM, and other peripheral circuits, and controls the host computer 2. The host control unit 20 includes an application execution unit 201 that executes processing by reading and executing a predetermined application and an accompanying program. In addition, the host control unit 20 includes a printer driver and a printer driver execution unit 202 that executes processing by reading and executing an accompanying program.

  The host communication unit 21 communicates with the printing apparatus 1 according to a predetermined communication standard under the control of the host control unit 20.

  Next, basic operations of the host computer 2 and the printing apparatus 1 when printing an image will be described.

FIG. 2 is a flowchart illustrating basic operations of the host computer 2 and the printing apparatus 1 when printing an image on roll paper. (A) shows the operation of the host computer 2, and (B) shows the operation of the printing apparatus 1.
At the start of the flowchart of FIG. 2B, the operation mode of the printing apparatus 1 is “normal mode”. In the normal mode, the printing apparatus 1 can execute normal operations such as printing an image based on the control of the host computer 2.

As shown in FIG. 2A, the host computer 2 generates print control data by the functions of the installed application and the printer driver (step SA1). The print control data is control data that instructs the printing apparatus 1 to print an image, and includes control commands according to the command system of the printing apparatus 1.
More specifically, the application execution unit 201 of the host control unit 20 outputs information related to an image to be printed by the printing apparatus 1 to the printer driver execution unit 202.
The printer driver execution unit 202 generates print control data based on information regarding the input image.

  Next, the host computer 2 transmits the generated print control data to the printing apparatus 1 (step SA2).

As shown in FIG. 2B, the communication unit 13 of the printing apparatus 1 receives the print control data (step SB1). The print control data is sequentially stored in the reception buffer BF.
The reception buffer BF is a storage area formed in a memory such as a RAM, and the communication unit 13 sequentially stores data received from the host computer 2 in the reception buffer BF. Data stored in the reception buffer BF is processed in the order in which it is stored.

  Next, the control unit 10 reads and executes the print control data stored in the reception buffer BF, thereby controlling the printing unit 14 to execute printing. More specifically, the control unit 10 generates image data of an image to be printed based on the print control data, and develops the generated image data in an image buffer (not shown). Next, the control unit 10 executes printing by controlling the printing mechanism, the transport mechanism, and other mechanisms of the printing unit 14 based on the image data developed in the image buffer.

Here, as described above, the firmware FW is installed in the printing apparatus 1, and the control unit 10 controls each unit of the printing apparatus 1 by the function of the firmware FW.
The firmware FW may be modified such as version upgrade or update.
In the present embodiment, upgrading the firmware FW means rewriting one version of the firmware FW to another version of the firmware FW. In the present embodiment, updating the firmware FW means updating a part of the firmware FW.

Conventionally, the firmware FW installed in the printing apparatus 1 is basically modified by a person having specialized knowledge such as a service person in charge of maintenance of the printing apparatus 1.
On the other hand, the printing apparatus 1 according to the present embodiment executes the following process together with the host computer 2 on the assumption that a user who does not have specialized knowledge modifies the firmware FW, and modifies the firmware FW. It is made easy and accurate and as smooth as possible.

FIG. 3 is a flowchart showing the operations of the host computer 2 and the printing apparatus 1 when the firmware FW is modified. (A) shows the operation of the host computer 2 and (B) shows the operation of the printing apparatus 1.
FIG. 4 is a diagram illustrating transition of the operation mode of the printing apparatus 1. In the description of the flowchart of FIG. 3, the transition of the operation mode of the printing apparatus 1 will be described as appropriate using FIG. 4.

Note that at the start of the flowchart of FIG. 3B, the operation mode of the printing apparatus 1 is the normal mode described above.
Further, in the following description, processing of each device will be described by taking as an example a case where firmware FW is upgraded as a modification of firmware FW.
Control program-related data, which is data necessary for upgrading the firmware FW, is stored in the host computer 2 in advance by a user in a predetermined method. The control program related data includes firmware FW after version upgrade and data necessary for version upgrade of other firmware FW.
In the following description, the main part of each process in the flowchart of FIG. 3A is the printer driver execution unit 202. That is, each process of the flowchart in FIG. 3A is executed by the function of the printer driver. However, each process in the flowchart of FIG. 3A is executed by the function of software other than the printer driver (for example, a dedicated software tool for maintenance of the printing apparatus 1), or by the function of the printer driver and other software. It may be configured.

As shown in FIG. 3A, the user inputs an instruction to start upgrading the firmware FW on a predetermined user interface provided by the printer driver of the host computer 2 (step SX1).
When there is an instruction input in step SX1, the printer driver execution unit 202 of the host control unit 20 of the host computer 2 generates a first transition command, controls the host communication unit 21, and transmits it to the printing apparatus 1 (step). SC1).
The first transition command is a control command for instructing a transition from the normal mode (first mode) to the printing apparatus information response mode (second mode) described later with respect to the operation mode of the printing apparatus 1.

The command type of the first migration command is “immediate execution command”.
The immediate execution command is another control command (data) that has already been received by the printing apparatus 1 when the printing apparatus 1 receives the immediate execution command, and there is an unprocessed control command. These commands are executed in preference to these control commands.
Therefore, the host computer 2 can cause the printing apparatus 1 to immediately execute processing based on the immediate execution command by transmitting the immediate execution command to the printing apparatus 1.
In particular, when an immediate execution command is received, the printing apparatus 1 executes processing based on the immediate execution command even in an offline state.
The offline state means that printing by the printing apparatus 1 is performed when the cover provided on the casing of the printing apparatus 1 is in the open state, when a predetermined error has occurred, or when the roll paper has run out of paper. When the command cannot be executed normally, the reading and execution of the control command received from the host computer 2 is restricted.

  The immediate execution command has an instruction code having a predetermined value as an instruction code. Therefore, the control unit 10 of the printing apparatus 1 can determine based on the instruction code whether the received control command is an immediate execution command.

  As shown in FIG. 3B, the communication unit 13 of the printing apparatus 1 receives the first transition command (step SD1). The first transfer command is stored in the reception buffer BF.

Here, the control unit 10 of the printing apparatus 1 executes the following processing regarding reception of the control command.
That is, the control unit 10 monitors the state of the reception buffer BF. When the control command is newly stored in the reception buffer BF in response to the reception of the control command from the host computer 2, the control unit 10 determines that the newly stored control command is based on the instruction code of the control command. Determine whether the command is an immediate execution command. When the control command newly stored in the reception buffer BF is not an immediate execution command, the control unit 10 does not read out the control command and monitors the state of the reception buffer BF again. In this case, the control command newly stored in the reception buffer BF is read by the control unit 10 when the unprocessed control commands stored in the reception buffer BF are sequentially read out and become a read target. And executed.
On the other hand, when the control command newly stored in the reception buffer BF is an immediate execution command, the immediate execution command management unit 101 executes immediately regardless of whether or not an unprocessed control command is stored in the reception buffer BF. Read and execute the command.

  Since the above processing is executed, when the first migration command is stored in the reception buffer BF in response to the reception of the first migration command (immediate execution command) transmitted by the host computer 2 in step SC1, the control unit 10 Regardless of whether or not an unprocessed control command is stored in the reception buffer BF, the first transition command is immediately read and executed.

  The control unit 10 executes the processes in steps SD2 to SD4 described below by reading and executing the first transition command stored in the reception buffer BF.

In step SD2, the control unit 10 clears the reception buffer BF.
The buffer clear is to erase data stored in the reception buffer BF. Note that, in step SD2, when the data stored in the reception buffer BF is managed by the pointer indicating the address of the storage area, the area where unprocessed (read-out data) is stored is managed. By changing the address indicated by the pointer, there may be no state where the unprocessed data is stored in the reception buffer BF.
In other words, in step SD2, it is only necessary that there is no unprocessed control command (data not yet read) in the reception buffer BF.

  By executing the process of step SD2, the control command transmitted from the host computer 2 to the printing apparatus 1 before transmitting the first transition command is discarded without being executed. For example, the host computer 2 transmits the above-described print control data before transmitting the first transition command, and all or a part of this print control data is stored in the reception buffer BF in an unprocessed state. In the case of the state, the processing is stopped without executing all or part of the printing of the image based on the print control unit data.

Next, the control unit 10 shifts to the printing apparatus information response mode (step SD3) (see also the arrow Y1 in FIG. 4).
The printing apparatus information response mode is a mode in which the control unit 10 reads and executes a control command when a control command is received from the host computer 2 even in an offline state. As will be described later, when the printing apparatus 1 is in the printing apparatus information response mode, the host computer 2 transmits a response request command to the printing apparatus 1 to receive a response corresponding to the command, and acquires information regarding the firmware FW.

  The printing apparatus information response mode corresponds to a “second mode”.

Here, the reason why the control unit 10 executes the buffer clear of the reception buffer BF when shifting to the printing apparatus information response mode is as follows.
That is, by executing buffer clearing of the reception buffer BF when shifting to the printing apparatus information response mode, unprocessed control is performed on the reception buffer BF when various processing related to firmware FW version upgrade performed in the following processing is performed. It is possible to prevent problems caused by remaining commands.
For example, when shifting to the printing apparatus information response mode without clearing the buffer of the reception buffer BF, the following situation may occur. That is, in the printing apparatus information response mode, when the host computer 2 transmits one control command (a control command that is not an immediate execution command) related to the version upgrade of the firmware FW, unprocessed print control data is received in the reception buffer BF. In this case, the one control command is executed after the print control data is executed. In this case, when an error (for example, an error relating to the conveyance of the roll paper) occurs due to the execution of the process based on the print control data, the reading of the print control data is interrupted, and accordingly, the reading of the one control command is performed. Can be delayed or not executed.
In this embodiment, since the buffer clear of the reception buffer BF is executed when shifting to the printing apparatus information response mode, an unprocessed control command remains in the reception buffer BF in the printing apparatus information response mode. It is possible to prevent the occurrence of malfunctions. For this reason, in the printing apparatus information response mode, the user does not need to perform a work to solve a problem caused by an unprocessed control command remaining in the reception buffer BF, and has specialized knowledge. Even if not, the firmware FW can be upgraded easily, accurately, and smoothly.

The reason why the control unit 10 reads and executes the control command received from the host computer 2 even in the offline state in the printing apparatus information response mode is as follows.
That is, when the control command is not read in the offline state, when the host computer 2 transmits one control command related to the version upgrade of the firmware FW to the printing apparatus 1 in the printing apparatus information response mode. Since the printing apparatus 1 is in an off-line state, a situation may occur in which processing based on the one control command is not executed. When such a situation occurs, the user needs to investigate the cause of the offline state and perform an operation to eliminate the offline state. In addition, specialized knowledge about the printing apparatus 1 is necessary for investigating the cause and eliminating the offline state.
On the other hand, according to this embodiment, even if the user does not need to perform the above-described work and does not have specialized knowledge, the firmware FW can be upgraded easily and accurately and smoothly. Can be done.
Note that the modification of the firmware FW (upgrading in this example) does not involve the physical operation of the printing apparatus 1 and can be normally executed even in an offline state.

  After shifting to the printing device information response mode, the control unit 10 transmits information notifying that the mode has shifted to the printing device information response mode to the host computer 2 (step SD4).

As shown in FIG. 3A, when the information of step SD4 is received, the printer driver execution unit 202 of the host control unit 20 of the host computer 2 generates a response request command and transmits it to the printing apparatus 1 (step SC2). ).
The response request command is a control command for requesting a response of firmware information described later.

As shown in FIG. 3B, the communication unit 13 of the printing apparatus 1 receives the response request command (step SD5).
Next, the control unit 10 reads the response request command and executes it to obtain firmware information (step SD6). The firmware information is information regarding the firmware FW installed in the printing apparatus 1, and includes at least information indicating the version of the firmware FW. Firmware information is stored in a predetermined storage area.
In the following description, the firmware FW before upgrading that is installed in the printing apparatus 1 is expressed as “old firmware FW1”, and the firmware FW after upgrading that is newly installed in the printing apparatus 1 is “new firmware FW2”. It expresses.

  Next, the control unit 10 transmits the firmware information acquired in step SD6 to the host computer 2 (step SD7).

As shown in FIG. 3A, when the printer driver execution unit 202 receives the firmware information transmitted by the printing apparatus 1 in step SD7, the printer driver execution unit 202 executes the following processing (step SC3).
That is, in step SC3, the printer driver execution unit 202 compares the version of the old firmware FW1 with the version of the new firmware FW2 based on the received firmware information, and the version of the new firmware FW2 is the old firmware FW1. Whether it is newer than the current version.

If the version of the new firmware FW2 is not newer than the version of the old firmware FW1 (step SC3: NO), in other words, the version of the old firmware FW1 and the version of the new firmware FW2 are the same, or the version of the old firmware FW1 If this is newer than the version of the new firmware FW2, the printer driver execution unit 202 executes the following processing. In this case, it is not necessary to upgrade the firmware FW.
The printer driver execution unit 202 generates a return command (mode return command) and transmits it to the printing apparatus 1 (step SC4).

  The return command is an immediate execution command for instructing a shift from the printing apparatus information response mode to the normal mode.

As shown in FIG. 3B, the communication unit 13 of the printing apparatus 1 receives the return command transmitted by the host computer 2 in step SC4 (step SD8).
Next, the control unit 10 reads and executes the return command to execute the processes of Step SD9 to Step SD10. Since the return command is an immediate execution command, the processing from step SD9 to step SD10 is executed immediately upon reception of the return command.
In step SD9, the control unit 10 clears the reception buffer BF.
In subsequent step SD10, the control unit 10 shifts the operation mode from the printing apparatus information response mode to the normal mode (see also the arrow Y2 in FIG. 4).
Since the buffer of the reception buffer BF is cleared when shifting to the normal mode, the control command received from the host computer 2 in the printing apparatus information response mode is stored in the reception buffer BF in an unprocessed state after shifting to the normal mode. It is possible to prevent the occurrence of problems due to the state.

  Here, in the present embodiment, the transition from the printing apparatus information response mode to the normal mode is performed without resetting the printing apparatus 1. For this reason, a reset is executed when there is no need to modify the firmware FW (version upgrade in this example), and there is a waiting time until the printing apparatus 1 can start normal processing such as printing processing in the normal mode. In addition, the user convenience can be prevented from being impaired.

As shown in FIG. 3A, when the version of the new firmware FW2 is newer than the version of the old firmware FW1 in step SC3 (step SC3: YES), the printer driver execution unit 202 generates a second transition command. And transmitted to the printing apparatus 1 (step SC5).
The second transition command is an immediate execution command for instructing transition from the printing apparatus information response mode to a modification preparation mode described later.

As shown in FIG. 3B, the communication unit 13 of the printing apparatus 1 receives the second transition command transmitted by the host computer 2 in step SC5 (step SD11).
Next, the control unit 10 reads and executes the second transition command to execute the processes of Step SD12 to Step SD17. Since the second migration command is an immediate execution command, the processing from step SD12 to step SD17 is executed immediately upon reception of the second migration command.

In step SD12, the control unit 10 performs buffer clear of the reception buffer BF.
Next, the control unit 10 shifts the operation mode from the printing apparatus information response mode to the modification preparation mode (step SD13) (see also the arrow Y3 in FIG. 4).

The modification preparation mode is an operation mode in which reception of data by a plurality of communication interfaces (in this embodiment, the first communication interface 131 and the second communication interface 132) is permitted and a modification preparation process described later is executed.
In the modification preparation mode, similarly to the printing apparatus information response mode, when the control command is received from the host computer 2 even in the offline state, the control unit 10 reads and executes the control command. The effect by this is the same as that described in the printing apparatus information response mode.

  The reason for permitting reception of data by a plurality of communication interfaces in the modification preparation mode is as follows. That is, as will be described later, in the modification preparation mode, the printing apparatus 1 receives data relating to modification of the firmware FW (in this example, control program-related data including the new firmware FW2) from the host computer 2. The amount of data received in the modification preparation mode may be very large. Based on this, data can be received from a plurality of communication interfaces, and the data can be received from any device (including the host computer 2) that stores data necessary for firmware FW modification using any communication protocol. It can be so.

  The modification preparation mode corresponds to a “third mode”.

Next, the control unit 10 of the printing apparatus 1 and the printer driver execution unit 202 of the host computer 2 execute the modification preparation process (step SC6 and step SD14).
Necessary information is transmitted and received between the control unit 10 of the printing apparatus 1 and the printer driver execution unit 202. The modification preparation process is a process in which the printer driver execution unit 202 transmits control program related data in the host computer 2, and in the printing apparatus 1, the control unit 10 receives all of the control program related data and performs predetermined processing. This is a process of storing in the storage area. As described above, the control program related data is data including new firmware FW2 and data necessary for upgrading the firmware FW. During the execution of the modification preparation process, the control unit 10 of the printing apparatus 1 executes the consistency check of the received data as necessary, and monitors whether the reception of the control program related data is normally executed.

As shown in FIG. 3B, when the modification preparation process is completed, in other words, when all reception and storage of the control program related data including the new firmware FW2 are completed, the control unit 10 operates in the operation mode. Is shifted from the modification preparation mode to the modification execution mode (step SD15) (see also the arrow Y4 in FIG. 4).
The modification execution mode is a mode in which the firmware FW is upgraded based on the stored control program related data. The modification execution mode corresponds to a “fourth mode”.

  After shifting to the modification execution mode, the control unit 10 upgrades the firmware FW based on the stored control program related data (step SD16). By the processing in step SD16, the new firmware FW2 is installed in the printing apparatus 1.

After completing the firmware FW upgrade, the control unit 10 resets the printing apparatus 1 (step SD17) (see also the arrow Y5 in FIG. 4).
When the printing apparatus 1 is reset, initialization and other processes necessary to execute the new firmware FW2 are performed, and the printing apparatus 1 executes processes based on the functions of the new firmware FW2 after startup associated with the reset. it can.
In addition, the operation mode of the printing apparatus 1 is set to the normal mode at the time of activation associated with the reset (see also the arrow Y6 in FIG. 4). Accordingly, the printing apparatus 1 can perform normal operations including control of the printing unit 14 based on the new firmware FW2 after activation due to reset.

As described above, the printing apparatus 1 according to the present embodiment includes the printing unit 14 that prints on roll paper (recording medium).
When the control unit 10 of the printing apparatus 1 receives the first transition command in the normal mode (first mode) in which the control of the printing unit 14 based on the received control command (command) can be executed, the reception buffer BF If the buffer is cleared (cleared), the normal mode is changed to the printing device information response mode (second mode), processing based on the received command is executed in the printing device information response mode, and a return command is received. When the buffer BF is cleared to shift from the printing apparatus information response mode to the normal mode and the second shift command is received, the reception buffer BF is cleared and the firmware FW (control program) for controlling the printing unit 14 is modified. The process shifts to a modification preparation mode (third mode) in which the process can be executed.
According to this configuration, since the buffer clear of the reception buffer BF is executed when shifting to the printing apparatus information response mode, unprocessed control commands remain in the reception buffer BF during the shift to the printing apparatus information mode. It is possible to prevent the occurrence of malfunctions. For this reason, the user does not need to perform a work to solve a problem caused by an unprocessed control command remaining in the reception buffer BF during the transition to the printing apparatus information mode, and has specialized knowledge. Even if it is not present, the firmware FW can be upgraded easily, accurately, and smoothly.
Also, according to the above configuration, the printing apparatus 1 can shift to either the normal mode or the modification preparation mode in accordance with an instruction from the host computer 2 during the transition to the printing apparatus information response mode. When the modification is not necessary, it is possible to shift to the modification preparation mode and prevent the reset accompanying the transition to the modification preparation mode from being executed.

In the present embodiment, the first migration command, the second migration command, and the return command are executed immediately prior to other unprocessed commands, and are immediate execution commands that are executed even in an offline state. .
According to this configuration, the printing apparatus 1 can immediately shift to each mode based on an instruction from the host computer 2.

In the present embodiment, the printing apparatus information response mode is a mode in which processing based on the received command can be executed even in the offline state, and the control unit 10 uses the firmware FW (control program) in the printing apparatus information mode. When a response request command (command) requesting a response of information regarding () is received, firmware information (information regarding the control program) is acquired and responded.
According to this configuration, after the host computer 2 shifts the printing apparatus 1 to the printing apparatus information mode, the host computer 2 acquires information about the firmware FW in the mode, and the firmware FW needs to be modified based on the acquired information. It is possible to determine whether or not, and based on the determination result, the operation mode of the printing apparatus 1 can be shifted to the normal mode or the modification preparation mode. That is, the host computer 2 can shift the printing apparatus 1 to an appropriate mode depending on whether the firmware FW needs to be modified.

In the present embodiment, the control unit 10 permits the reception of control program related data that is data related to the modification of the firmware FW by a plurality of communication interfaces in the modification preparation mode, and the reception of the control program related data is completed. Then, the process shifts to a modification execution mode (fourth mode) in which a process related to modification of the control program based on the control program related data can be executed.
According to this configuration, the printing apparatus 1 can receive data from a plurality of communication interfaces, and can perform arbitrary communication from any device (including the host computer 2) that stores data necessary for modification of the firmware FW. The protocol can receive the data.
Further, according to the above configuration, the printing apparatus 1 shifts to the modification execution mode after the reception of the control program related data is completed, and executes the modification of the firmware FW based on the control program related data. For example, it is possible to prevent the firmware FW from failing to be modified.

Further, in the present embodiment, the control unit 10 executes a reset after completing the process related to the modification of the firmware FW based on the control program related data, and shifts to the normal mode after restarting due to the reset.
According to this configuration, the printer 1 can be brought into a state in which the processing based on the firmware FW after the modification can be executed normally after the processing related to the modification of the firmware FW is performed.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied within the scope of the present invention.
In the above-described embodiment, the printing apparatus 1 is a thermal printer. However, the printing method of the printing apparatus 1 is not limited to the exemplified one.
Each functional block described with reference to the drawings can be arbitrarily realized by hardware and software, and does not suggest a specific hardware configuration.

  DESCRIPTION OF SYMBOLS 1 ... Printing apparatus, 2 ... Host computer (control part), 5 ... Printing system, 10 ... Control part, 14 ... Printing part, BF ... Reception buffer.

Claims (7)

A printing unit for printing on a recording medium;
A receive buffer to receive commands;
A control unit that controls the printing unit based on the received command in the first mode,
The controller is
In the first mode, when the first transition command is received, the reception buffer is cleared to shift from the first mode to the second mode,
In the second mode, when a process based on the received command is executed and a return command is received, the reception buffer is cleared and the mode is shifted from the second mode to the first mode, and a second shift command is received. The printing apparatus is configured to clear the reception buffer and shift to a third mode in which processing relating to modification of a control program related to control of the printing unit can be executed. The first migration command, the second migration command, and the return command are:
The printing apparatus according to claim 1, wherein the printing apparatus is an immediate execution command that is executed in priority to other unprocessed commands and executed even in an offline state. The second mode is a mode in which processing based on a received command can be executed even in an offline state,
The controller is
3. The printing apparatus according to claim 1, wherein, in the second mode, when a command for requesting a response of information related to the control program is received, information related to the control program is acquired and responded. The controller is
In the third mode, when reception of control program related data that is data related to modification of the control program by a plurality of communication interfaces is permitted and reception of the control program related data is completed, the control program related data is based on the control program related data. 4. The printing apparatus according to claim 1, wherein the printing apparatus shifts to a fourth mode in which processing relating to modification of the control program can be executed. 5. The controller is
5. The printing according to claim 4, wherein a reset is executed after processing related to modification of the control program based on the control program-related data is completed, and the process shifts to the first mode after a restart associated with the reset. apparatus. A method for controlling a printing apparatus,
In the first mode in which the control of the printing unit can be executed based on the received command, when the first transition command is received, the reception buffer is cleared and the first mode is shifted to the second mode.
In the second mode, when processing based on the received command is executed and a return command is received, the reception buffer is cleared, the mode is shifted from the second mode to the first mode, and a second transition command is received. A method for controlling a printing apparatus, comprising: clearing the reception buffer and shifting to a third mode in which processing relating to modification of a control program related to control of the printing unit can be executed. A printing system comprising: a printing device; and a control device that communicates with the printing device,
The printing apparatus includes:
A printing section for printing on a recording medium;
A reception buffer for receiving a command from the control device;
A control unit that controls the printing unit based on the received command in the first mode,
The controller is
In the first mode, when the first transition command is received from the control device, the reception buffer is cleared and the first mode is shifted to the second mode.
In the second mode, when processing based on the command received from the control device is executed and a return command is received from the control device, the reception buffer is cleared and the second mode is shifted to the first mode. A control unit that, when receiving a second transition command from the control device, clears the reception buffer and shifts to a third mode in which a process related to modification of a control program related to the control of the printing unit can be executed. Characteristic printing system.

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