JP2009154435A - Printer, and printing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printer which shortens a time taken for completing a plurality of updating processings. <P>SOLUTION: The printer includes a command reading means which receives a command that makes the plurality of updating processings executed by one command and which analyzes contents of each updating processing from the received command, a command sorting means which sorts each of the analyzed updating processings to first updating processing executed before restarting and to second updating processing executed after restarting, a command executing means which executes first updating processing, restarting and second updating processing while rearranging an execution order so that each of the sorted updating processings can be executed by one restarting, and a printing executing means which executes printing according to each kind of setting passed through updating processing. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a printing apparatus, and more particularly to a printing apparatus that receives a predetermined command and updates various settings while restarting based on the command, and a printing system including the printing apparatus and a command transmission apparatus. It is.

  Conventionally, when various settings of a printing apparatus are updated remotely via a network, a command including a restart request is transmitted from the terminal to the printing apparatus. When the printing apparatus receives the above command, it reads the contents of the update process that this command means, and executes the update process and restart based on the read contents.

  FIG. 8 is a diagram for explaining the flow of each process in the conventional update process. As shown in the figure, command 1 is a command for requesting the printer to restart after the update process. Command 2 is a command for executing update processing after the printing apparatus is restarted.

  When the commands 1 and 2 are transmitted to the printing apparatus, first, update processing based on the command 1 is executed, and then restart based on the command 1 is executed. Thereafter, after restarting based on the command 2, the update processing based on the command 2 is executed. Therefore, it is necessary to perform two restarts in order to complete all the update processes, and it takes time to complete the process. Further, during the restart, the printing apparatus does not accept an external command, and the connection with the network is cut off. For this reason, the longer the time of being disconnected from the network, the more inconveniences are given in terms of network management.

  The present invention has been made in view of the above problems, and an object thereof is to provide a printing apparatus capable of shortening the time required to complete a plurality of update processes, and a printing system using the printing apparatus. .

  In order to solve the above problems, according to one aspect of the present invention, there is provided a printing apparatus that executes update processing of various settings while restarting based on a predetermined command, and executes printing processing. A command for executing a plurality of the update processes by a command, command reading means for reading the contents of each update process from the received command, and each of the read update processes is executed before the restart Instruction classifying means for classifying the first update process and a second update process executed after the restart, so that the classified update processes can be executed in one restart. And a command execution unit that executes an update process, the restart, and the second update process while rearranging the execution order.

  In the invention configured as described above, the printing apparatus updates various settings while restarting based on the received command, and receives and receives a command for executing a plurality of the update processes with one command. Command reading means for reading the contents of each update process from the command that has been executed, a first update process that is executed before the restart of each read update process, and a second update process that is executed after the restart The instruction classification means for classifying the first update process, the first update process, the restart, and the second update process are rearranged so that each classified update process can be executed by one restart. Since it includes a command execution means to execute and a print execution means to execute printing based on various settings that have been updated, each update executed can be executed with a single command. Sense is because it can be completed in one reboot, it is possible to shorten the time required for the update process.

Preferably, the command classification means classifies the second update process into a third update process for confirming an update after restart and a fourth update process for accepting an input of an update item after restart, The command execution means executes the fourth update process after executing the third update process.
In general, the update process that requests a restart before the update process includes an update process that confirms the update after the restart process and an update process that accepts an input of an update item after the restart process. Since these update processes have different update targets and different update methods, if these two update processes are mixed and processed, the process becomes complicated and the time required for the update process increases. For this reason, in the invention configured as described above, the time required for the processing is further shortened by classifying the two update processes.

Preferably, when executing each of the classified update processes, the command execution means rearranges and executes the update processes so that there is no contradiction in the execution order of the update processes having a dependency in the update order.
In the present invention, the transmitted commands are not executed in the order of transmission, but are classified once and then executed for each classified update process. For this reason, update processing is executed in the printing apparatus without considering the execution order of the update processing. Therefore, there may be inconsistencies in the settings after the update in the update processing in which there is a dependency in the execution order of the update processing. . Therefore, in the invention configured as described above, when executing each classified update process, the execution order of each update process is rearranged and executed so as not to contradict, thereby setting the printing apparatus after the update process To prevent a failure due to a contradiction.

Preferably, the command execution means does not execute the classified update process when there are a plurality of update processes for updating the same item in the classified update process.
In normal update processing, the update items are overwritten and updated by each command executed individually, and the update items are checked by restarting between updates. However, when a plurality of update processes are collectively executed as in the present invention, naturally, a check associated with restart is not performed, and it is not desirable to overwrite the same update item in such a state. Therefore, in the invention configured as described above, when there are a plurality of update processes for updating the same item in the classified update process, the classified update process is not executed to update the printing apparatus. Preventing inconsistencies and causing failures.

Preferably, the instruction classification unit temporarily stores an instruction representing each classified update process in a nonvolatile memory.
In the invention configured as described above, an instruction representing an update process is stored in a volatile memory instead of a normal nonvolatile memory such as a RAM. Therefore, even when the power of the printing apparatus is shut off due to the restart, the update process can be stored, and the update process can be resumed after the restart.

Preferably, the command is written in an XML format.
In the invention configured as described above, since the command is described in a language-independent XML (extensible markup language) format, the present invention can be applied to various printing apparatuses without depending on the form of the language used by the printing apparatus. can do.

  Further, the present invention can be applied not only to a printing apparatus alone but also to a printing system using this printing apparatus. For this reason, as another aspect of the present invention, a command transmission device that transmits a predetermined command, the command is received, and various settings are updated while restarting based on the command, and printing is performed. A printing system including a printing apparatus that executes processing, wherein the command transmission apparatus includes a command transmission unit that transmits a command for executing a plurality of the update processes with a single command to the printing apparatus. An apparatus includes: an instruction reading unit that reads contents of the plurality of update processes from the transmitted command; a first update process that is executed before the restart of the read update process; and the restart Instruction classifying means for classifying into the second update process to be executed later, and the first update process so that each of the classified update processes can be executed by one restart. And update processing comprises said restart, and a command execution means for executing while rearranging the execution order of the second update process.

Hereinafter, embodiments of the present invention will be described in the following order.
1. First embodiment:
1.1. Printing system configuration:
1.2. Printing process:
1.3. Update process:
2. Second embodiment 3. Other embodiments

1. First embodiment 1.1. Configuration of Printing System FIG. 1 is a block diagram illustrating the printing system. The printing system 10 includes a computer 20 that converts data to be printed into a print job using a printing language, and a print that reads a print job generated by the computer 20 and executes a print process based on the read processing content. The apparatus 30 is comprised. Further, the computer 20 transmits a control command for updating various settings of the printing apparatus 30 to the printing apparatus 30, and updates various settings of the printing apparatus 30 that has received the control command. The computer 20 and the printing apparatus 30 are connected to the network 40, and the computer 20 transmits a print job and a control command to the printing apparatus 30 via the network 40. Therefore, the computer 20 has a function as a command transmission device.

  The computer 20 converts the generated data to be printed into a print job using a printing language, and transmits the print job to the printing apparatus 30 via the network 40. The computer 20 includes a CPU 21 that executes predetermined processing and control by a computer program, a memory 22 that records the computer program and various data, an input device 25 that includes input keys and a mouse, and receives an operation from a user, an image And a host I / F 23 for connecting to the network 40, and an I / O unit 24 for exchanging data and control commands between the CPU 21 and the various peripheral devices described above. Yes.

  The CPU 21 functions as various blocks of the print job generation unit 110, the command reading unit 120, and the transmission processing unit 130 by reading and executing various computer programs from the memory 22. Each of the above blocks may be configured in hardware.

  The print job generation unit 110 converts data to be printed generated by application software (not shown) into a print job using a printing language. The command reading unit 120 reads a control command for updating various settings of the printing apparatus 30. Specifically, a plurality of control commands are recorded in the memory 22, and the command reading unit 120 reads out a control command designated based on an operation input using the input device 25 from the memory 22. The transmission processing unit 130 transmits the print job and control command to the printing apparatus via the network 40. Therefore, a command transmission unit is realized by the command reading unit 120 and the transmission processing unit 130.

  FIG. 2 is a diagram illustrating a control command that the command reading unit 120 reads from the memory 22. In addition to a control command for instructing the printing apparatus 30 to perform one update process shown in FIG. 2A, the memory 22 has a control for instructing the printing apparatus 30 to perform a plurality of update processes as shown in FIG. Commands are stored. Specifically, the control command shown in FIG. 2B is used when an update process with restart is transmitted to the printing apparatus 30.

  Each word below “@EJL” in the control command shown in FIG. 2B defines a specific update process. Specifically, the character string “REBOOT” requests the printing apparatus 30 to restart, and each word delimited by “;” below “REBOOT” instructs the printing apparatus 30 to perform each update process. Therefore, when this control command is received by the printing apparatus 30, the printing apparatus 30 executes each update process described in the control command while including a restart process.

  The printing apparatus 30 includes a CPU 31 for executing predetermined processing and control by a computer program, a memory 32 for storing the computer program and various data, an HDD 33 as a nonvolatile memory for storing various data, a paper feed mechanism, A printer engine 36 that includes a print head mechanism and the like, executes printing, an operation panel 37 that includes input keys, a touch panel, and the like, receives a user operation, a host I / F 35 that connects to the network 40, and the above An I / O unit 34 that exchanges data and control commands between each peripheral device and the CPU 31 is provided.

  The CPU 31 reads out various computer programs from the memory 32 and executes them as blocks of the printer management unit 200, the language processing unit 300, the update processing unit 400, the print processing unit 500, and the engine control unit 600. Function. Each of the above blocks may be configured in hardware.

  Various data referred to by the CPU 31 is stored in the memory 32. The memory 32 is configured by a ROM (Read Only Memory), and stores a command for executing a process corresponding to the received control command and a table executed in the update process.

  The printer management unit 200 performs system management of the printing apparatus 30. The printer management unit 200 has a function as an operating system in the printing apparatus 30. As an example of the function, initial settings for system startup, system settings such as an operation mode, settings for the operation panel 37, a memory 32, and an HDD 33 are provided. There is a setting. The system setting such as the operation mode is executed when the user or the like operates the operation panel 37 during the system test after the restart.

  The system settings such as the operation mode include activation in the support mode, activation in the monochrome model, and activation in the color model. The settings of the memory 32 and the HDD 33 include program update, initialization of the memory 32, HDD 33 format, and memory check. Further, in the setting of the operation panel 37, there is a setting at the time of factory shipment of panel operation items.

  The language processing unit 300 analyzes the input print job and generates raster data based on the analysis result. Since the print job generated by the computer 20 is vector data, the language processing unit 300 converts the vector data into raster data configured by a bitmap to generate a print image.

  The print processing unit 500 performs image processing such as color correction on the generated print image. The print processing unit 500 performs pseudo intermediate processing, smoothing, and the like in addition to color correction for converting the color space of the generated print image. The print image subjected to the image processing is then output to the printer engine 36.

  The engine control unit 600 controls the operating environment of the printer engine 36. The engine control unit 600 has a function for causing the printer engine 36 to execute actual printing, a function for designating various operations, and a function for instructing operation values of each mechanism during printing. As an example of a function that actually executes printing, there is a Color Regist Sheet that controls the positional accuracy of a print image. Further, as an example of a function for designating an operation, there is calibration for adjusting the color output by the print head mechanism. Furthermore, as an example of a function for controlling the operation value of each mechanism, there is control of the paper feed mechanism unit according to the shape and thickness of the paper as the print medium. Also, when changing these settings, it is necessary to restart after changing the settings.

  The update processing unit 400 reads the input control command and updates the function of each block by a method described later. Based on the control command transmitted from the computer 20, the update processing unit 400 executes update processing for the printer management unit 200, language processing unit 300, print processing unit 500, and printer engine control unit.

1.2. Printing process:
Hereinafter, a printing process in the printing system 10 will be described. In this printing process, a print job generated on the computer 20 is transmitted to the printing apparatus 30 via the network 40, and the printing apparatus 30 executes the printing process based on the transmitted print job.

  When a user operates an input device 25 to cause an application program (not shown) to generate data to be printed and requests a print command for this data, the print job generation unit 110 uses a print language. A print job is generated from this data.

  The transmission processing unit 130 transmits the generated print job to the printing apparatus 30 via the network 40. At this time, the transmission processing unit 130 accesses the printing apparatus 30 via the network 40 and connects to the network reception port of the host I / F 35. When the connection with the network port is made, the generated print job is transmitted to the printing apparatus 30 via the I / O unit 24 and the host I / F 23.

  When the printing job is received by the printing apparatus 30, the language processing unit 300 analyzes the printing language of the received printing job and generates raster data. The language processing unit 300 analyzes the printing language constituting the received print job and generates raster data from the vector data. The generated raster data is subjected to color correction by the print processing unit 500 and then transmitted to the printer engine 36. The printer engine 36 prints a print image on a print medium while the operation of each mechanism is controlled by the engine control unit 600. Thus, the CPU 31 and the printer engine 36 implement a print execution unit.

1.3. Update process:
Next, update processing in the printing system 10 will be described. In the update process executed by the printing system 10, the printing apparatus 30 receives a control command transmitted from the computer 20, and the update processing unit 400 updates each part based on the received control command. The control command transmitted at this time instructs the update processing unit 400 to perform a plurality of update processes with a single command (FIG. 2B). The update processing unit 400 reads the contents of each update process included in the control command, and executes the read update processes while rearranging the execution order so that one restart can be completed.

  FIG. 3 is a diagram for explaining the flow of update processing and restart in the printing apparatus. As shown in the figure, the execution program for executing a plurality of update processes input by one control command is executed by the update processing unit 400 with the execution order being rearranged. At this time, the update processing unit rearranges the execution order so that each update process can be executed by one restart, and executes each update process. Therefore, the time required for the update process executed by one control command shown in the figure is shorter than the case where each update process is executed by an individual command because there is no two restarts.

  FIG. 4 is a flowchart for explaining the update processing of the present invention. First, when the printing apparatus 30 receives a control command, the update processing unit 400 parses the received control command (step S402). By this parsing, each word constituting the control command and grammatical errors are checked.

  The update processing unit 400 reads the meaning of each word constituting the control command with reference to the table 700 from the memory 32 (step S404). Further, the table 700 stores each word constituting the control command and the address of the memory 32 in which an instruction for executing the update process corresponding to the word is stored. The update processing unit 400 refers to the table. The execution program corresponding to each word is read from the memory 32. In steps S402 and S404, the update processing unit 400 implements an instruction reading unit.

  FIG. 5 is a diagram for explaining a table referred to by the update processing unit as an example. In the right line of the table, each word included in the control command is stored, the address of the memory 32 storing the execution program of the update process executed by each word, and the classification of each word are stored. Yes. The update processing unit 400 reads the update process that each word means by comparing the word described in the control command with the word stored in the table. Further, in steps to be described later, the address of the memory 32 in which the execution program for executing the update process corresponding to each word is stored is determined, and the update process is classified.

  FIG. 6 is a diagram for explaining an update process corresponding to each word read using a table. In the control command shown in FIG. 6, each update process described below is instructed to the printing apparatus. A command for causing the engine control unit 600 to change the paper feed speed of the paper feed mechanism to 0.05 m / s by the word “FEEDOFFSET = 0.05”. A command that causes the engine control unit 600 to change the print head cleaning cycle to an earlier one by the word “CLEANING = FAST”. A command that causes the printer management unit 200 to change the setting mode to the color model mode in response to the word “COLORMODEL”. A command that causes the engine control unit 600 to reset the value of the toner counter in response to the word “CLEARIONCOUNTER”.

  The update processing unit 400 classifies each read update process and records an execution program for executing each update process on the HDD 33 based on the timing of the restart request (steps S404 to S420). First, the update processing unit 400 1) executes an execution program read from the memory 32 and makes a restart request after the update process (first update process (hereinafter referred to as update process 1)), 2) updated after the restart Confirm the process (third update process (hereinafter referred to as update process 2)), 3) update the set value after restart (fourth update process (hereinafter referred to as update process 3)), (Step S406). In steps S404 to S420, the update processing unit 400 implements an instruction classification unit.

  When the update processing unit 400 reads out an execution program for executing each update process classified as the update process 1 from the memory 32 with reference to the table 700, the update process unit 400 sequentially stores the execution program in a predetermined address of the HDD. Next, the update processing unit 400 rearranges each execution program stored in the HDD 34 based on the priority of each update process (step S408). At this time, the update processing unit 400 executes the reordering so that the execution order of each update process having a dependency in the update order does not contradict. Specifically, the update processing unit 400 rearranges the execution order of each configuration update process while referring to a table in which the priority order of the execution order is stored in advance.

  For example, when updating each value of the engine control unit 600 classified in the update process 3, a function for causing the printer engine 36 to execute actual printing, a function for designating various operations, and an operation value of each mechanism at the time of printing The update processes are rearranged so that the update processes are executed in the order of the functions instructing.

  Further, when the update process stored in the HDD 33 includes an update process that causes a contradiction when executed, the update process unit 400 skips an execution program corresponding to the update process and executes an error process. (Steps S450 to S452). An execution process that causes a contradiction during execution is a case where the same parameter is updated with a different value. As an example, an update process that updates the paper feed speed of the printer at a different speed when the engine control unit 600 is updated. This is the case. Unlike normal update processing, the updated values are not individually overwritten each time the update processing is executed, and the update order is also rearranged on the printing apparatus 30 side, so the processing after the update is inconsistent. This is to prevent this.

  If an execution program for executing contradictory update processing is recorded, the update processing unit 400 skips the execution program (step S450) and instructs the computer 20 to report an error (step S452). If the error report instruction is on, the update processing unit 400 transmits an error report to the computer 20 (step S454). The computer 20 receives this error report and causes the monitor 26 to display an error message.

  Thereafter, when the rearrangement of the execution order of all the execution programs classified into the update process 1 is completed, the update processing unit 400 executes the rearrangement of the execution programs classified into the update process 2 (steps S412 and S414). ). Similarly, when the rearrangement of all the execution programs classified into the update process 2 is completed, the execution programs classified into the update process 3 are rearranged. (Steps S416 and S418).

  The update process classified as update process 3 is to execute an operation mode or setting for performing each update process after the update process. Therefore, when the printer management unit 200 has set the “designated” flag in the operation mode and setting after restart (step S416), the update processing unit 400 follows the operation mode and setting specified in advance, so that the computer 20 Is notified of errors (steps S450 to S454). Conversely, if the “designated” flag is not set, the update processing unit 400 first records the execution program read from the memory 32 in the HDD 34 (step S418). Thereafter, the update processing unit 400 sets a “designated” flag so as to execute a new operation mode and setting after the restart (step S420).

  The update processing unit 400 executes each update process classified and recorded in the HDD 33 so as to be completed by one restart (steps S422 to S440). Specifically, first, the update processing unit 400 executes the execution program classified into the update processing 1 stored in the HDD 33 (step S424), and then the update processing unit 400 requests the printer management unit 200 to restart. Then, restart is executed (step S426). And the update process part 400 performs in order of the update process 2 and the update process 3 (step S430, S440). Therefore, the update processing unit 400 implements a command execution unit through steps S422 to S440.

  What is executed as the update process 1 in step S424 is, for example, various functions executed by the engine control unit 600. As an example, in the control command shown in FIG. 6, a command for changing the paper feed speed of the paper feed mechanism to 0.05 m / s, a command for changing the print head mechanism to a print head cleaning cycle earlier, This command resets the value.

  What is executed as update processing 2 in step S430 is, for example, setting of the operation panel 37, setting of the memory 32, and HDD 33, which is executed by the printer management unit 200. In the control command shown in FIG. 6, the above update processes are not instructed.

  What is executed as the update processing 3 in step S430 is system settings such as initial settings for system startup and operation modes executed by the printer management unit 200, for example. Note that the control command described in FIG. 6 is a command for changing the setting mode to the color model mode.

  FIG. 7 is a flowchart for explaining the processing executed by the update processing 3. Note that the flowchart according to FIG. 7 is a diagram illustrating the update process executed in step S440 in FIG. 4 in more detail. When the printing apparatus is restarted, the printer management unit 200 first executes a system test (step S442). In this system test, the error of each part for which update processing has been performed is checked.

  When the user operates the operation panel 37 by a predetermined method during execution of the system test (step S444), the printer management unit 200 shifts to the mode setting state based on the operation method of the operation panel 37 (step S446). In the case of the control command of FIG. 6, the printer management unit 200 shifts to setting for changing to the color model mode.

  In this state, when various settings are input by operating the operation panel 37, the printer management unit 200 confirms the input settings (step S448), and shifts to various modes based on the input settings (step S450). ). Thereafter, the printer management unit 200 activates the entire system of the printing apparatus 30 and shifts to the normal printing mode.

  As described above, according to the present invention, a plurality of update processes can be executed with a single control command, and each update process to be executed can be completed with one restart, thereby reducing the time required for the update process. be able to. When the printing apparatus is connected to the network, the time for which the printing apparatus is disconnected from the network by the update process can be shortened, and as a result, the management of the printing apparatus on the network can be improved.

2. Second Embodiment In the above description, update processing by the printing system 10 including the computer 20 and the printing apparatus 30 has been described. However, the update process may be executed by operating the printing apparatus 30. In this case, when the user operates the operation panel 37, the update processing unit 400 may receive a control command based on the operation of the operation panel 37, and execute the update process based on the received control command.

3. Other Embodiments The control command may be configured using an XML format language. By describing the control command in an XML (extensible markup language) format that does not depend on the printing language used by the printing apparatus, the control command can be used for any printing apparatus connected to the network. . This is effective when a plurality of printing apparatuses and computers are connected to a large-scale network, and it is not necessary to unify the printing languages used by the printing apparatuses.

  In addition, this invention is not restricted to the Example and modification which were mentioned above, Each structure disclosed in the Example and modification which were mentioned above mutually replaced, the structure which changed the combination, well-known technique, and the above-mentioned Configurations in which the respective configurations disclosed in the embodiments and the modified examples are mutually replaced or combinations are changed are also included.

It is a block diagram explaining this printing system. It is a figure explaining the control command which a command reading part reads from memory. FIG. 6 is a diagram illustrating an update process and a restart flow in the printing apparatus. It is a flowchart for demonstrating an update process. It is a figure explaining the table referred by the update process part as an example. It is a figure explaining the update process corresponding to each word read using the table. It is a flowchart explaining the process performed by the update process. It is a figure explaining the flow of each process in the conventional update process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Printing system, 20 ... Computer, 21 ... CPU, 22 ... Memory, 23 ... Host I / F, 24 ... I / O part, 25 ... Input device, 26 ... Monitor, 30 ... Printing device, 31 ... CPU, 32 ... Memory, 33 ... HDD, 34 ... I / O unit, 35 ... Host I / F, 36 ... Printer engine, 37 ... Operation panel, 40 ... Network, 110 ... Print job generation unit, 120 ... Command reading unit, 130 ... Transmission processing unit, 200 ... printer management unit, 300 ... language processing unit, 400 ... update processing unit, 500 ... print processing unit, 600 ... engine control unit, 700 ... table

Claims (7)

A printing apparatus that executes update processing of various settings while restarting based on a predetermined command, and executes print processing,
Command reading means for receiving a command for executing a plurality of the update processes with one command, and reading the contents of each update process from the received command;
Instruction classification means for classifying each read update process into a first update process executed before the restart and a second update process executed after the restart;
Command execution means for executing the sorted update processes while rearranging the execution order of the first update process, the restart, and the second update process so that the respective update processes can be executed by one restart. A printing apparatus comprising: The command classification means classifies the second update process into a third update process for confirming an update after the restart and a fourth update process for receiving an input of an update item after the restart,
The printing apparatus according to claim 1, wherein the command execution unit executes the fourth update process after executing the third update process.   2. The command execution means, when executing each of the classified update processes, rearranges and executes the update processes having dependency relations in the update order so as not to contradict each other. Or the printing apparatus in any one of Claim 2.   The command execution means does not execute the classified update process when there are a plurality of update processes for updating the same item in the classified update process. The printing apparatus according to claim 1.   5. The printing apparatus according to claim 1, wherein the command classification unit temporarily stores a command for executing the classified update processes in a nonvolatile memory.   The printing apparatus according to claim 1, wherein the command is described in an XML format. A printing system comprising: a command transmitting device that transmits a predetermined command; and a printing device that receives the command and executes update processing of various settings while restarting based on the command, and executes printing processing Because
The command transmission device includes command transmission means for transmitting a command for executing a plurality of the update processes with one command to the printing device,
The printing apparatus includes:
Command reading means for reading the contents of the plurality of update processes from the transmitted command;
Instruction classification means for classifying each read update process into a first update process executed before the restart and a second update process executed after the restart;
Command execution means for executing the sorted update processes while rearranging the execution order of the first update process, the restart, and the second update process so that the respective update processes can be executed by one restart. A printing system comprising:

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