JP2001260433A - Printer and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a printer in which a plurality of print job data (jobs) thrown into the printer can be managed individually. SOLUTION: A job thrown into a printer from a host unit is processed specifically by a plurality of processing means and printed on a print recording medium. The printer is arranged such that identification information is assigned to a job being thrown in and a plurality of jobs thrown into the printer can be managed individually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a printer technology, and more particularly to a technology for managing a plurality of jobs input from a host device.

[0002]

2. Description of the Related Art A printer receives print job data sent from a host device, interprets the generated print job data, generates image data for print output, and realizes printing by visualizing the image data on a print recording medium. I have.

In recent years, Ethernet (registered trademark) (E
L constructed by C.thernet (registered trademark)) or the like.
Network-compatible printers connected to an AN and shared by a plurality of host devices have become widespread. In a network environment using such a printer, a print server is typically installed inside or outside the printer. The print server has a function of receiving print job data by performing network communication with a host device, temporarily storing the print job data in a hard disk device or the like, and then sequentially taking out the print job data and sending it to the print processing. The function of temporarily accumulating a plurality of print job data and sending out the data sequentially is generally called a printer spooler.

[0004]

By the way, the user has
After giving a print instruction from application software running on the host device, there is a case where the user wants to cancel the print. Immediately after the host device sends the print job data to the printer, the user can cancel the printing by deleting the print job data stored in the hard disk device or the like.

However, when the print job data is read out from the hard disk drive and input to the printer main body, if the user wants to cancel printing based on the print job data, the memory contents in the printer main body must be reset, We had to take measures such as turning off the power of the printer. in this case,
This is not a problem if the only print job data is input to the printer, but if multiple print job data is input to the printer, even print job data that should not be There was a problem that it was canceled.

Accordingly, an object of the present invention is to make it possible to manage each of a plurality of print job data (jobs) input to a printer.

[0007] That is, a first object of the present invention is to be able to present the progress status of each of a plurality of jobs input to a printer to a user.

A second object of the present invention is to make it possible to perform processing such as printing stop for a specific job among a plurality of jobs input to a printer.

[0009]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a printer in which a plurality of processing means execute predetermined processing given to a job input from a host device to realize printing on a print recording medium. An object of the present invention is to assign identification information to a job to be submitted and to manage each of a plurality of jobs submitted to the printer in accordance with the identification information.

[0010] More specifically, the present invention for solving the above-mentioned problem is a first accepting means for accepting a job in the form of print job data from a host device, and an issuance for issuing identification information for the accepted job. Means for generating image data based on the print job data as processing for the job, printing means for printing on a print recording medium based on the generated image data as processing for the job,
A job management unit that manages the plurality of received jobs based on the identification information.

Here, the printer is characterized by further comprising a second receiving means for receiving a job management request including identification information from a host device.

In this case, the job management means specifies a predetermined job based on identification information included in the received predetermined job management request.

[0013] The job management means may be configured to, if the received job management request is a job cancel request, stop the processing for the job specified based on the identification information. And at least one of the generating means and the printing means. Here, it is preferable that the job management unit controls the printing unit before controlling the first reception unit and the generation unit.

Further, when each of the first receiving means, the generating means and the printing means is controlled by the job managing means so as to stop the processing for the specified job, a job other than the specified job is The processing is performed for the job of (1).

Still further, at least one of the first receiving means, the generating means, and the printing means notifies the job managing means of a status of processing for the job.

Further, the job management means notifies a predetermined host device of a processing status notified from at least one of the first reception means, the generation means and the printing means.

Further, the invention of the above-mentioned apparatus is also realized as an invention of a method. Further, the above-described invention is also realized as a program for realizing a predetermined function in a printer control device or a computer, or a recording medium storing the program.

Here, the recording medium is, for example, a hard disk (HD), a DVD-RAM, a flexible disk (FD), a CD-ROM, etc.
Includes memory such as OM. Further, the control device and the computer of the printer include a so-called microcomputer or the like, for example, a so-called central processing unit such as a CPU or an MPU that performs a predetermined process by interpreting a program. Further, the program may be realized by including a function of calling a function realized by a basic program such as an operating system.

In this specification, the term “means” does not simply mean a physical means, but also includes a case where the function of the means is realized by software. Further, the function of one unit may be realized by two or more physical units, or the function of two or more units may be realized by one physical unit.

[0020]

Next, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment] FIG. 1 is a diagram showing an example of a hardware configuration of a printer according to the present embodiment. In FIG. 1, a processor 11 includes a ROM 12 and an R
Various programs stored in the AM 13 are executed. That is, when the various programs are executed by the processor 11, the printer realizes a predetermined function in cooperation with other hardware. In the present embodiment, as described later, a communication function, a spooling function, an image generation function,
A print control function and a job management function are realized. The hard disk device 14 stores print job data sent from the host device 1 via the network interface circuit 15. The network interface circuit 15 is connected to a network N (not shown) and performs network communication with a host device. The image memory 16 stores image data generated based on the print job data. Engine controller 17
Reads the image data developed in the image memory 16 while controlling the operation of the print engine 18, and supplies the read image data to the print engine 18. The engine controller 17 is activated, for example, by using a print execution command sent from the processor 11 as a trigger when bitmap data having a predetermined bandwidth is expanded in the image memory 16. The print engine 18 is configured by, for example, a paper feeding mechanism, a print head, and the like, and performs printing on a print recording medium such as paper. Print Engine 1
For the printer 8, a printer according to the type of printer, such as a laser printer or a serial printer, can be used.

The printer described above is connected to a host device via a network N, and forms a printing system. FIG. 2 is a diagram for explaining an outline of the print system according to the present embodiment. Note that FIG. 1 shows a representative one of a plurality of host devices and printers connected to the network N.

The application program 201 includes, for example, a word processor for creating and editing a document,
Graphic editors for creating and editing figures. Now, when a print command is given from the user via the user interface 202, the application program 201 calls the printer driver 203.

The printer driver 203 displays a print dialog box via the user interface 202 and prompts the user to input predetermined setting items and the like.
When a print instruction (for example, selection of an “OK” button) is given from the user via the user interface 22, the printer driver 203 receives the application data to be printed from the application program 201, and Is converted into print job data to be interpreted by the printer, and output to the print job transmitting unit 204. In this case, the printer driver 203 includes information about the print job itself (job information) in addition to a print command to be interpreted by the printer for the original printing.
Is preferably embedded in the output data. The job information is, for example, a document name (file name), a user name, and the like.

The print job transmitting unit 204 physically / logically converts the print job data sent from the printer driver 203 and outputs the converted data to the network interface unit 205. That is, the print job transmitting unit 20
Reference numeral 4 realizes a communication service positioned as an upper layer protocol in the network layer model. The network interface unit 205 implements a communication service positioned as a lower layer protocol in the network layer model. The network interface unit 205 transmits data to the network interface unit 205 'of the printer via the network N.

The network interface unit 205 ′ provided in the printer analyzes the data of the lower layer protocol received via the network N, converts the data into the data of the upper layer protocol, and delivers the data to the print job receiving unit 206. Upon receiving new print job data from the host device, the print job receiving unit 206 receives the new print job data as a job input into the printer, and issues job identification information (job ID) for the job. That is, the job identification information is for uniquely identifying a job in the printer. After receiving the print job as a job, the print job receiving unit 206 converts the received data of the upper layer protocol into the original print job data. In this case, the print job receiving unit 206
Extracts job information added by the printer driver 13 from a predetermined protocol or print job data. The print job receiving unit 206 notifies the job management unit 212 'of the issued job identification information and job information, and associates the print job data with the job identification information (for example, in a format added to the print job data). Output to the unit 207. When the print job data is output to the spool unit 207, the print job receiving unit 206 notifies the job management unit 212 'that the reception has been completed.

The spool unit 207 outputs the print job data sent from the print job receiving unit 206 to the storage device 208, reads out the print job data stored in the storage device 208 in a predetermined order, and sends the read data to the image generation unit 209. Output. The spool unit 207 according to the present embodiment incorporates a mechanism for speeding up data supply to the image generation unit 209, as described later.

The image generation unit 209 includes a spool unit 20.
The print job data sent via the CPU 7 is interpreted to generate image data, and the image data is developed in the image memory. In this case, the image generation unit 209 extracts the job identification information added to the print job data and starts interpreting the job identification information.
Notify 2 '. When the image generation unit 209 expands the image data in the image memory, the print control unit 210
To the print request. This print request includes job identification information. When the generation of the image data is completed by interpreting the print job data, the image generation unit 209 notifies the job management unit 212 ′ of the completion.

The print control unit 210 instructs the print mechanism unit 211 to prepare for printing based on the print request, and notifies the job management unit 212 of the job identification information. Upon receiving from the printing mechanism unit 211 that the printing preparation is completed, the printing control unit 210 reads the image data expanded in the image memory and supplies the read image data to the printing mechanism unit 211. The printing mechanism unit 211 executes printing on a print recording medium based on the supplied image data. After finishing supplying the image data for the job identification information and receiving the page ejection completion notification from the printing mechanism unit 211, the print control unit 210 notifies the job management unit 212 that printing has been completed.

The job management unit 21 provided in the host device
2 communicates with a job management unit 212 'provided in the printer via a job management information transmission / reception unit 213, 213' according to a predetermined protocol, and manages a job in the printer. That is, the job management unit 212 '
An execution unit that manages a job based on print job data input to the printer. The job management information transmission / reception units 213 and 213 ′ typically implement a communication service using a protocol different from the communication of print job data. More specifically, the job management unit 212 receives an instruction from a user via the user interface 202 and sends the instruction to the job management unit 212 'in the printer as a job management request. Job management unit 21 in printer
2 'performs processing according to the received job management request. For example, when receiving a deletion request for a specific job, the job management unit 212 ′ deletes all data for the specific job existing in the printer. On the other hand, the job management unit 212 'receives the progress of the job from the print job reception unit 206, the image generation unit 207, and the print control unit 210, and notifies the job management unit 212 in the host device of the progress status.

FIG. 3 is a block diagram for explaining details of the spool unit according to the present embodiment. The spool unit 207 typically includes the print job receiving unit 2
The printing unit 301 writes the print job data received from the storage device 208 into the storage device 208, and
Read out the print job data stored in 08
02 in the first-in first-out order and output to the image generation unit 209. However, in the present embodiment, the spool unit 207 is configured to be able to supply print job data without passing through the storage device 208 according to the availability of buffers provided at the preceding and subsequent stages of the storage device 208. .

When receiving the data from the network interface unit 205 ', the print job receiving unit 206 notifies the bypass control unit 303. The bypass control unit 303 determines whether there is a memory block in use in the first buffer 304, whether there is an empty memory block in the second buffer 305, or whether the storage device 2
At 08, it is determined whether or not a remaining file exists.

The bypass control unit 303 determines whether there is a memory block in use in the first buffer, if there is a residual file in the storage device 208, or if there is no free memory block in the second buffer memory 303. In this case, the selectors 306 and 307 are controlled so that data is supplied via the storage device 208.

On the other hand, when the memory block in use exists in the first buffer 304, the empty memory block exists in the second buffer 305, and the remaining file does not exist in the storage device 208, Controls the selector 306 such that data is supplied directly to the second buffer. Further, the bypass control unit 303
Controls the selectors 306 and 307 so that data is supplied to the second buffer via the first buffer 304 when there are no more empty memory blocks in the second buffer 305. Then, the bypass control unit 303
Controls the selector 306 such that when there are no more empty memory blocks in the first buffer 304, data is supplied via the storage device 208.

FIG. 4 is a flowchart for explaining the operation of the print job receiving unit 206 according to the present embodiment. The print job receiving unit 206 is activated when receiving new data from the network interface unit 205 '. First, the print job receiving unit 206
Job identification information is issued (STEP 401), and job information is extracted from the print job data (STEP 40).
2). Next, the print job receiving unit 206 stores the issued job identification information and job information in the job management unit 21.
2 ′ (STEP 403), and outputs the job identification information to the spool unit 207 (STEP 40).
4). Then, the print job receiving unit 206 determines whether a cancel command for the job has been notified (STEP 405), converts the received data into print job data (STEP 406), and
7 (STEP 407). If the print job receiving unit 206 determines that a cancel command for the job has been notified, the print job receiving unit 206 ends the processing for the job. The print job receiving unit 206 repeats the processing of STEPs 405 to 407 until the final data of the print job data is output to the spool unit 207. If the print job receiving unit 206 determines that the last data has been output to the spool unit 207 (STEP
408, Yes), the job management unit 2 notifies that the reception has been completed.
12 'is notified and the process is terminated (STEP 409).

FIG. 5 is a flowchart for explaining the operation of the image generator 209 according to this embodiment.
The image generation unit 209 is activated when new print job data is received via the spool unit 207. The image generation unit 207 first extracts job identification information from the received print job data (STEP 50).
1) The job identification information and the fact that the interpretation has started are notified to the job management unit 212 ′ (STEP 502). Next, the image generation unit 209 determines whether or not a cancel instruction for the job has been notified (STEP 50).
3) interpret the print job data, generate image data, and expand this in the image memory (STE
P504). After developing the image memory for a predetermined bandwidth (for example, one page), the image generation unit 209 sends a print request to the print control unit 210 (STEP 50).
5). As a result, the image data expanded in the image memory is read under the control of the print control unit 210. The image generation unit 209 repeats the processing in STEPs 503 to 505 until the generation of the image data based on the print job data is completed. If the image generation unit 209 determines that the cancel instruction for the job has been notified, the image generation unit 209 ends the processing for the job. Then, the image generation unit 209
Determines that the development of the final data has been completed (S
(YES in STEP 506), the job management unit 212 'is notified that the image generation has been completed, and the process ends (S50).
TEP507).

FIG. 6 shows a print control unit 21 according to this embodiment.
6 is a flowchart for explaining the operation of the "0". The print control unit 210 is activated by receiving a print request from the image generation unit 209. The print control unit 210
First, when a print request is received from the image generation unit 209, the job identification information added to the image data is extracted (STEP 601), and this job identification information and the fact that printing has started are notified to the job management unit 212 '(STE).
P602). The print control unit 210 determines whether a cancel command for the job has been notified (STEP 6).
03), and instructs the printing mechanism unit 211 to prepare for printing (STE
P604), receiving the print preparation completion sent from the printing mechanism unit 211, reads out the image data from the image memory and supplies it to the printing mechanism unit 211 (STEP 60).
5). The print control unit 210 performs the above-described STEP 603 until it receives the completion of discharge of the last page from the print mechanism unit 211
To 605 are repeated. Upon receiving the completion of ejection of the last page from the printing mechanism unit 211 (Yes in STEP 606), the print control unit 210 notifies the job management unit 212 'that printing has been completed.

As described above, each of the print job receiving unit 206, the image generating unit 209, and the print control unit 210 according to the present embodiment notifies the job management unit 212 'of the progress of its own processing. As a result, the job management unit 212 ′ can manage the progress status of the job input into the printer for each of the reception, image generation, and printing processes.

FIG. 7 is a diagram for explaining the progress of a job. As shown in the figure, in this embodiment, the progress status of a job is indicated by eight states. That is, the progress status of the job is being received in the receiving process (Receivin
g) or reception complete (Done), job waiting (Waiting), interpreting (Imaging) in image generation processing
Alternatively, there are three states of interpretation completion (Done), and three states of job waiting (Waiting), printing (printing), or printing completion (Done) in the printing process.

The job management unit 212 'manages the progress of such a job for each input job.
Holds the job management table. FIG. 8 is a diagram illustrating an example of the job management table. As shown in the figure, the progress of a job input into the printer is held for each piece of job identification information. The job management table may hold not only the progress of the job but also detailed information on the job. The detailed information on the job includes, for example, the number of prints, toner consumption,
There is error information.

FIG. 9 shows a job management unit 2 according to this embodiment.
It is a flowchart for demonstrating operation | movement of 12 '.
The job management unit 212 ′
6. When a notification is received from any of the image generation unit 209 and the print control unit 210 (YES in STEP 901)
s), and updates the job management table according to the contents of the notification (STEP 902). For example, upon receiving the job identification information and the job information from the print job receiving unit 206, the job management unit 212 'registers the job in the job management table and changes the progress of the job to "Receiv
After updating the job management table, the job management unit 212 ′ notifies the host device of the updated content as job management information (STEP 903). When the management information is received, control is performed so as to be displayed as a job management screen on the user interface unit 202.

On the other hand, when the job management section 212 'receives a job management request from the host device (STEP 904).
Yes), the job identification information is specified from the job information included in the job management request, and the job specified by the job identification information is processed according to the request.
For example, when the job management request is a request for acquiring job management information, the job management unit 212 ′ notifies the request source host device of the contents of the job management table. Also,
If the job management request is a job cancellation (printing stop) request, the job management unit 212 'controls so as to delete all data on the job existing in the printer.

FIG. 10 is a flowchart for explaining the operation of the job management unit 212 'according to the present embodiment when canceling a job. In FIG.
When receiving a job cancellation request from the host device as a job management request, the job management unit 12 'refers to the job management table and determines whether or not the job to be canceled has been printed (STEP 1001). When determining that the job has not been printed yet, the job management unit 212 ′ inquires of the spool unit 207 whether or not the print job data for the job exists in the storage device 208 as a file (STEP).
1002). If the spool unit 207 determines that there is a residual file in the storage device 208, it deletes the file (STEP 1003). Then, the job management unit 212 ′ notifies the print job reception unit 206, the image generation unit 209, and the print control unit 210 of a cancel command (STEP 1004). The cancel instruction includes job identification information of a job to be canceled. Print job receiving unit 20 receiving the notification
6. Each of the image generation unit 209 and the print control unit 210 does not perform processing on data relating to the job specified by the job identification information. It is preferable that the job management unit 212 ′ first notifies the print control unit 210 of a cancel command. This is to minimize the consumption of physical consumables such as paper.

Next, the job management unit 21 according to this embodiment
An example of job management by 2,212 'will be described.

FIG. 11 shows the user interface unit 20.
FIG. 6 is a diagram illustrating an example of a job management screen displayed in FIG.
In this example, a job management screen is displayed on the Web browser. In the figure, a job list area 81 displays the progress status of each job input into the printer. The detailed information area 82 displays the detailed information of the job highlighted in the job list area 81. Further, the consumables information area 83 displays the consumption of consumables such as paper and toner by the job, and the error information area 84 displays an error report when an error occurs. is there.

Here, it is assumed that a paper jam has occurred in the printing mechanism 211 in the printer. The printing mechanism unit 211 notifies the job management unit 212 ′ of error information regarding a paper jam. The job management unit 212 'registers the error information in the job management table and notifies the job management unit 212 in the host device via the network N.
The job management unit 212 controls an error report for the job to be displayed in the error information area 84 as shown in FIG. By referring to the error report, the user can grasp the error situation in the printer via the user interface unit 202 of the host device. The user cancels this job by clicking “Job Cancel” located at the bottom right of the screen.
When the "l" button is selected, a job management request as a job cancel request is transmitted to the job management unit 212 '. The job management unit 212' receives this job management request and sends the job Notify a cancel instruction.

As described above, according to the present embodiment, the job identification information is issued for the job input into the printer. Therefore, even if there are a plurality of jobs in the printer, the job identification information is issued. , The job can be uniquely identified.

Further, according to the present embodiment, the processing status of the job identified by the job identification information is notified to the host device and is displayed on the screen. Be able to grasp.

Further, according to the present embodiment, it becomes possible to perform a predetermined process such as cancellation for a specific job identified by the job identification information.

Although the operation of the function realizing section has been described sequentially in this embodiment, the present invention is not particularly limited to this. Therefore, as long as no inconsistency occurs in the operation, the order of processing may be changed or the operation may be performed in parallel.

[Other Embodiments] The above embodiment is an exemplification for describing the present invention, and is not intended to limit the present invention to only this embodiment. The present invention can be implemented in various forms without departing from the gist thereof.

For example, the above embodiment can be modified as follows.

(1) In order to notify the job identification information between the function realizing units, the information may be passed as an argument when calling a subroutine (function) or may be passed as a message. Further, each function realizing unit may be configured to refer to a shared memory area such as a job management table. Furthermore, job identification information may be added to each data for a job.

(2) In the present embodiment, cancellation of a job has been described as an example of job management, but job management is not particularly limited to this. For example, the print order may be changed for spool data (print job data) stored in the storage device 208, or the spool data may be deleted.

[0055]

According to the present invention, job identification information is issued for a job submitted to a printer. Therefore, even if there are a plurality of jobs in the printer, the job is identified based on the job identification information. Can be uniquely identified,
It becomes possible to manage each of a plurality of jobs.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a hardware configuration of a printer according to the present invention.

FIG. 2 is a block diagram for explaining an outline of a print system according to the present invention.

FIG. 3 is a block diagram illustrating details of a spool unit.

FIG. 4 is a flowchart illustrating an operation of a print job receiving unit.

FIG. 5 is a flowchart illustrating an operation of an image generation unit.

FIG. 6 is a flowchart illustrating the operation of a print control unit.

FIG. 7 is a diagram for explaining the progress of a job.

FIG. 8 is a diagram illustrating an example of a job management table.

FIG. 9 is a flowchart illustrating the operation of a job management unit.

FIG. 10 is a flowchart illustrating an operation of the job management unit when canceling a job.

FIG. 11 illustrates an example of a job management screen.

FIG. 12 is a diagram illustrating an example of a job management screen.

[Explanation of symbols]

 Reference Signs List 201 application program 202 user interface 203 printer driver 204 print job transmission unit 205, 205 'network interface 206 print job reception unit 207 spool unit 208 storage device 209 image generation unit 210 print control unit 211 ... Printing mechanism sections 212, 212 '... Job management sections 213, 213' ... Job management request transmission / reception section

Claims (11)

[Claims] A first accepting unit for accepting a job in the form of print job data from a host device; an issuing unit for issuing identification information for the accepted job; and an image based on the print job data for processing the job. Generating means for generating data; printing means for performing control for printing on a print recording medium based on the generated image data as processing for the job; and each of the plurality of received jobs based on the identification information. And a job management unit for managing the printer. 2. The printer according to claim 1, wherein said printer further comprises a second receiving means for receiving a job management request including identification information from a host device. 3. The printer according to claim 2, wherein the job management unit specifies a predetermined job based on identification information included in the received predetermined job management request. 4. The method according to claim 1, wherein the job management unit is configured to, if the received job management request is a job cancel request, stop the processing for the job specified based on the identification information. 4. The printer according to claim 3, wherein said printer controls at least one of said means, said generating means and said printing means. 5. When the first reception unit, the generation unit, and the printing unit are controlled by the job management unit to stop processing for the specified job, the first reception unit, the generation unit, and the printing unit perform processing other than the specified job. 5. The printer according to claim 4, wherein the processing for the job is performed. 6. The printer according to claim 5, wherein said job management means controls said printing means before controlling said first reception means and said generation means. 7. The printer according to claim 1, wherein at least one of the first receiving unit, the generating unit, and the printing unit notifies the job managing unit of a processing status of the job. . 8. The job management unit notifies a predetermined host device of a processing status notified from at least one of the first reception unit, the generation unit, and the printing unit. Item 7. The printer according to Item 7. 9. A print system including a host device and a printer, wherein the host device transmits a print request based on application data to the printer, and transmits the print request to the printer. First job management for transmitting a predetermined job management request in response to the received print request, receiving job management information transmitted from the printer, and controlling the received job management information to be displayed on a screen Means for receiving the print request as a job, issuing means for issuing identification information for the received job, and generating image data based on the print job data as processing for the job. Generating means for performing, and the generated Printing means for printing on a print recording medium based on the print data, and second job management means for managing the plurality of received jobs based on the identification information, wherein the first job management means When a job management request for canceling a specific job is transmitted, the second
Wherein the job management means controls at least one of the first reception means, the generation means, and the printing means so that processing for the specific job is stopped. 10. A print system including a host device and a printer, wherein the host device transmits a print request based on application data to the printer, and transmits the print request to the printer. First job management for transmitting a predetermined job management request in response to the received print request, receiving job management information transmitted from the printer, and controlling the received job management information to be displayed on a screen Means for receiving the print request as a job, issuing means for issuing identification information for the received job, and generating image data based on the print job data as processing for the job. Generating means for performing, and generating as the processing for the job A printing unit that prints on a print recording medium based on image data; and a second unit that receives a processing status of the job notified from at least one of the first reception unit, the generation unit, and the printing unit. A job management unit, wherein the second job management unit transmits the processing status of the job to the first job management unit when receiving the processing status of the job. And printing system. 11. A first step of receiving a job in the form of print job data from a host device, a second step of generating image data based on the print job data as a processing of the job, and a processing of the job A third step of performing printing on a print recording medium based on the generated image data, wherein a step of issuing identification information for the job received in the first step; And a step of managing each of the plurality of received jobs based on the identification information.