JP2004341734A - Printer, print processing method, program and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printer which performs management to reception of print data in each print request by an easy process. <P>SOLUTION: When this printer 101 receives a Create Job packet transmitted from a host computer on a network 104, the printer 101 analyzes XML data described in a CreateJob, and generates a print data-receiving print port in the absence of an error. In this case, a port number is changed to '10000', '10001', '10002', etc. every time a print request is present. The printer 101 transmits CreateJob response data to the host computer, starts a 30-sec timer corresponding to the generated print port, and closes the generated print port when the timer expires before a reception start of the print data. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a printing device, a printing method, a program, and a storage medium that can communicate with an external device via a network.
[0002]
[Prior art]
2. Description of the Related Art In recent years, Web service technologies used on the Internet have received great attention. The Web service is a technology for loosely combining various services distributed on a network. By using the Web service technology, it becomes possible for a program to dynamically select an appropriate service without human intervention. Expected from the field. The data exchanged in this Web service is described in XML (Extensible Markup Language), and the data described in XML is transmitted and received on a network using SOAP (Simple Object Access Protocol). This SOAP specifies that the lower layer uses HTTP (Hyper Text Transfer Protocol) or SMTP (Simple Mail Transfer Protocol), and can be easily used on the Internet like Web browsing or e-mail. Is possible.
[0003]
By applying this Web service technology to the printing technology, various unprecedented advantages can be obtained. For example, if a Web service is implemented in a printer, it becomes possible to submit a print job using SOAP as a print service and to perform device management. Further, the user can flexibly customize access to the print service. For example, a method for connecting to a print service is described in WSDL (Web Service Description Language). Therefore, by preparing a program that interprets this WSDL and converts it according to a certain rule, only items necessary for the user are provided. It is possible to provide a UI (user interface) from which is extracted. The WSDL can also describe job information that can be specified when a print job is input. For example, whether or not double-sided printing is possible can be known in advance by referring to the WSDL.
[0004]
As described above, since various advantages can be obtained by applying the Web service technology to the printer, it is expected that the development of the printer using the Web service technology will be further promoted in the future.
[0005]
Printing by a printer to which the Web service technology is applied is performed by, for example, the following procedure.
[0006]
First, the client describes a print request command in XML and sends it to the printer. When receiving the print request command, the printer responds to the client with a URL or a port number for receiving the print data (or as a destination when transmitting the print data). Thereafter, the client transmits the print data to the designated URL or port number, and the printer performs printing (for example, Patent Document 1).
[0007]
As the URL for data reception, for example, there is a URL of “http://192.168.0.1/print/job1”. In this case, 80 which is a default of the http scheme is used as a port number. Means to do. Therefore, the client first connects to the port 80 of the printer, and transmits the print data using the HTTP POST method. Further, the printer responds to the next print request by changing the URL to, for example, “http://192.168.0.1/print/job2” instead of the URL of the previous job. By confirming the URL of a job to be received, each job can be uniquely identified even when a plurality of jobs are submitted at the same time.
[0008]
[Patent Document 1]
JP-A-2002-333958
[0009]
[Problems to be solved by the invention]
In the above-described procedure, the print request and the print data are transmitted to the printer through different connections, and the printer responds to the print request with a URL for data reception. Therefore, it is necessary to consider a situation in which transmission of print data is not started due to a network failure or a failure of a client program. In that case, the printer is configured to invalidate the print request as a timeout if the transmission of the print data from the client is not started for a predetermined time after responding to the print request, and to reject the print data transmission from the client thereafter. There is a need. However, in order to realize such a configuration, it is necessary to associate and hold the data reception URL and the time until the timeout for each job, so that the management and the accompanying processing become complicated. In addition, since the print data of all the jobs is received using the port with the port number 80, even if the job has already timed out and has been invalidated, the connection is once established and the URL of the received data is After confirming the above, it is necessary to perform redundant processing of returning an error. As a result, unnecessary traffic is generated on the network.
[0010]
An object of the present invention is to provide a printing apparatus, a printing processing method, a program, and a storage medium that can manage the reception of print data for each print request or limit the reception of print data by simple processing.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a printing device capable of communicating with an external device via a network, wherein the printing request receiving means receives a print request transmitted from the external device, Port generation means for generating a port for receiving print data corresponding to the request, and response means for transmitting response data including the generated port information to the external device as a response to the received print request And print data receiving means for receiving, at the generated port, print data transmitted from the external device in response to the response data, wherein the port generating means receives a print request from the external device. Each time the print data is received, the print data receiving means outputs print data at the generated port within a predetermined time from the transmission of the response data. And wherein the managing whether reception has been started.
[0012]
According to another aspect of the present invention, there is provided a printing apparatus capable of communicating with an external device via a network, wherein the printing request receiving unit receives a print request transmitted from the external device, A response unit that transmits information for identifying a destination of the print data corresponding to the print request received by the reception unit as a response to the print request received by the print request reception unit, and information transmitted by the response unit is Print data receiving means for receiving print data from the external device for the destination indicated, the response means assigning a different destination to each of a plurality of print requests, the print data receiving means, At each destination, reception of print data for the destination is restricted after a predetermined time has elapsed since the information was transmitted by the response unit. And wherein the Rukoto.
[0013]
According to another aspect of the present invention, there is provided a print processing method for printing, by a printing apparatus, a print job transmitted from an external device via a network, wherein the print request transmitted from the external device is provided. A print request receiving step of receiving, a port generating step of generating a port for receiving print data corresponding to the received print request, and information of the generated port as a response to the received print request. And a print data receiving step of receiving, at the generated port, print data transmitted from the external device in accordance with the response data, wherein the port includes: In the generating step, a different port is generated each time a print request from the external device is received, and in the print data receiving step, the response data is generated. Characterized by managing whether reception of the print data in which said generated from the transmission within a predetermined time port is started.
[0014]
According to another aspect of the present invention, there is provided a print processing method for printing, by a printing apparatus, a print job transmitted from an external device via a network, wherein the print request transmitted from the external device is provided. A print request receiving step of receiving, and a response step of transmitting information identifying a destination of print data corresponding to the print request received in the print request receiving step as a response to the print request received in the print request receiving step And a print data receiving step of receiving print data from the external device with respect to the destination indicated by the information transmitted in the response step. In the response step, a different destination is set for each of the plurality of print requests. In the assigning and the print data receiving step, at each of a plurality of destinations, after a predetermined time elapses after information is transmitted by the response unit, And limits the reception of the print data to the destination.
[0015]
According to another aspect of the present invention, there is provided a program executed on a printing apparatus for printing a print job transmitted from an external apparatus via a network, wherein the program executes a print request transmitted from the external apparatus. A print request receiving module for receiving, a port generating module for generating a port for receiving print data corresponding to the received print request, and information of the generated port as a response to the received print request. A response module that transmits response data to the external device, and a print data reception module that receives print data transmitted from the external device in response to the response data at the generated port, The generation module generates a different port each time a print request is received from the external device, and Shin module is characterized by managing whether reception of print data from the transmission of the response data port said generated within a predetermined time is started.
[0016]
According to another aspect of the present invention, there is provided a program executed on a printing apparatus for printing a print job transmitted from an external apparatus via a network, wherein the program executes a print request transmitted from the external apparatus. A print request receiving module for receiving, and a response module for transmitting, as a response to the print request received by the print request receiving module, information for identifying a destination of print data corresponding to the print request received by the print request receiving module And a print data receiving module that receives print data from the external device for the destination indicated by the information transmitted by the response module, wherein the response module sets different destinations for each of the plurality of print requests. The print data receiving module assigns each of a plurality of destinations. In, after a predetermined time has elapsed from the information is transmitted by said response means is characterized in that to limit the reception of the print data for that destination.
[0017]
The present invention also provides a storage medium in which any of the above programs is stored in a computer-readable manner to achieve the above object.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
FIG. 1 is a diagram schematically illustrating a configuration of a printing system including a printing apparatus according to an embodiment of the present invention.
[0020]
In the printing system, as shown in FIG. 1, a printing apparatus 101 and a plurality of host computers 102 and 103 are communicably connected to each other via a network 104 such as a LAN (Local Area Network). The printing apparatus 101 is composed of, for example, a laser beam printer or the like that receives a print job from the host computers 102 and 103 and prints the print job. It is possible to mount the device.
[0021]
Next, the configuration of the printing apparatus 101 will be described with reference to FIG. FIG. 2 is a block diagram illustrating a hardware configuration of the printing apparatus 101 in FIG. Here, a laser beam printer will be described as an example of the printing apparatus 101.
[0022]
As shown in FIG. 2, the printing apparatus 101 includes a CPU 12 that comprehensively controls access to various devices connected to a system bus 15 based on a control program stored in a program ROM of a ROM 13. Here, the system bus 15 is connected with various devices such as a ROM 13, a RAM 19, a printing unit interface 16, a network interface unit 18, a disk controller (DKC) 20, a nonvolatile memory 24, and an operation panel 201.
[0023]
The ROM 13 includes a program ROM that stores a control program and the like that can be executed by the CPU 12, and font data (including outline font data) used when generating output information output to the printer engine 17 via the printing unit interface 16. ) And a data ROM for storing information and the like used on the host computers 102 and 103.
[0024]
The RAM 19 mainly functions as a main memory, a work area, and the like for the CPU 12, and the memory capacity can be expanded by an optional RAM connected to an additional port (not shown). The RAM 19 is used for an output information development area, an environment data storage area, and the like.
[0025]
The printing unit interface 16 is an interface for exchanging information with the printer engine 17, and the CPU 12 outputs an image signal as output information to the printer engine 17 via the printing unit interface 16. The network interface unit 18 is connected to the network 104, and the CPU 12 performs communication processing for communicating with the host computers 102 and 103 on the network 104 via the network interface unit 18.
[0026]
The disk controller (DKC) 20 controls access to the external storage device 14 connected as an option. The external storage device 14 includes at least one or more external memories such as a hard disk (HD) and an IC card, stores font data, an emulation program, form data, and the like, and temporarily spools a print job. The job is used as a job storage area for externally controlling the job. The non-volatile memory 24 is for storing printer mode setting information from the operation panel 201 for each user and each group. The operation panel 201 has a display panel, hard keys, and software keys, and various information is input by a user operating these keys. In addition, on the display panel of the operation panel 201, set information, apparatus status information, and the like are displayed.
[0027]
Further, when various expansion devices such as the above-described finisher and double-sided device are attached to the printing device 101 as an option, their operations are controlled by the CPU 12.
[0028]
Next, a software program configuration in the printing apparatus 101 will be described with reference to FIG. FIG. 3 is a block diagram showing a software program configuration in the printing apparatus 101 of FIG.
[0029]
In the printing apparatus 101, the CPU 12 executes a control program stored in the program ROM of the ROM 13, so that the printer control unit 301, the image print control unit 302, the XML parser 303, the SOAP control unit 304, the HTTP server control unit 305, a TCP / IP protocol control unit 306, and a network communication driver 307 are configured.
[0030]
The printer control unit 301 is a module that controls the printing unit interface 16 and performs operations such as transmitting image data to the printer engine 17 and controlling the paper discharge position. The image print control unit 302 converts the received print data into a printable data format and performs various print-related controls such as the number of print copies and double-sided printing. The network communication driver 307 controls the network interface unit 18 and controls data transmission and reception with the network 104.
[0031]
The TCP / IP protocol control unit 306 includes a module for controlling the TCP / IP, and performs data transmission / reception control according to the TCP / IP using the network communication driver 307. The HTTP server control unit 305 is a module that controls the entire HTTP, analyzes an HTTP request packet received from the host computer, performs appropriate processing, and transmits the data to the SOAP control unit 304 and the image print control unit 302. In addition to passing the HTTP response packet to the host application, control is performed to return an HTTP response packet to the host computer according to an instruction from the host application. The SOAP control unit 304 is a module that controls the SOAP. The SOAP control unit 304 analyzes the XML data received from the host computer using the XML parser 303, and calls an appropriate module of the image print control unit 304 based on the analyzed data. Data to be returned to the host computer is converted into XML format data, and control for returning the data to the host computer via the HTTP server control unit 305 is performed. The XML parser 303 is a module that receives data in the XML format and outputs the analysis result.
[0032]
Next, a case where the host computers 102 and 103 on the network 104 perform printing using the printing apparatus 101 will be described with reference to FIGS. FIG. 4 is a diagram showing an example of packet data called CreateJob transmitted from the host computers 102 and 103 on the network 104 in FIG. 1 to the printing apparatus 101 using SOAP over HTTP, and FIG. 5 is a diagram showing CreateJob in FIG. FIG. 6 is a diagram showing an example of response packet data for a packet. FIG. 6 is a flowchart showing an operation procedure of the printing apparatus 101 when the host computers 102 and 103 in FIG. 1 perform printing using the printing apparatus 101. FIG. FIG. 8 shows an example of a print data transfer packet transmitted from the host computers 102 and 103 by the HTTP POST method. FIG. 8 shows an example of an HTTP response packet transmitted from the printing apparatus 101 of FIG. 1 to the host computers 102 and 103. FIG. 9 shows the printing apparatus 10 of FIG. From a diagram showing an example of an error response packet transmitted to the host computer 102 and 103.
[0033]
When the host computers 102 and 103 on the network 104 perform printing using the printing apparatus 101, packet data called CreateJob is transmitted from the host computers 102 and 103 to the printing apparatus 101 using SOAP over HTTP. You. The CreateJob packet is a command for instructing the printing apparatus 101 to start a job (printing), and is described in an XML format. As shown in FIG. 4, the CreateJob packet describes information such as a requesting user name (<requesting-user-name> tag) and an instruction related to job processing (<job-instruction> tag). The <job-instruction> tag includes a <copies> tag for setting the number of copies, a <sides> tag for setting double-sided printing, a <finishing> tag for setting the finishing of printing, and the like. Perform job processing based on the value set in the tag. Further, the <job-instruction> tag can optionally include a <notification-instruction> tag. In the <notification-instruction> tag, notification information about the job is described. In the example of FIG. 4, a <notification-recipient> tag for setting a notification destination and an <event> tag for setting a notification condition are described as the notification information. The printing apparatus 101 performs an event transmission process based on the values set in these tags.
[0034]
Upon receiving the CreateJob packet from the host computers 102 and 103, the printing apparatus 101 returns a CreateJob response packet to the host computer 102 and 103 in response to the CreateJob packet. As shown in FIG. 5, the CreateJob response packet data is described in the XML format similarly to the above-described CreateJob packet data, and is transmitted using SOAP over HTTP. The CreateJob response packet includes the result code (<result-code> tag) for the CreateJob command, the identifier of the generated job (<job-id> tag), and the URI of the printing port (<data-sink) as the destination of the print data. -Uri> tag). Here, in the example shown in FIG. 5, the URL “http://192.168.0.1:10000/bmlinks/print?job=1” is shown as the printing port. In the above URL, “10000” indicated by reference numeral 501 corresponds to the port number, and “job = 1” indicated by reference numeral 502 corresponds to the job identifier assigned to the job by the printing apparatus 101.
[0035]
Next, the operation of the printing apparatus 101 when the host computers 102 and 103 on the network 104 perform printing using the printing apparatus 101 will be specifically described with reference to FIG. The operation shown in FIG. 6 is controlled by the CPU 12 executing the control program in the ROM 13.
[0036]
When the printing apparatus 101 receives, for example, a CreateJob packet as shown in FIG. 4 transmitted from a host computer (one of the host computers 102 and 103 in FIG. 1) on the network 104, the printing apparatus 101 proceeds to step S601. The XML data described in CreateJob is analyzed, and in step S602, it is determined whether or not the data has an error based on the analysis result. If there is no error, the printing apparatus 101 creates a print port for receiving print data in step S603. Here, as the port number, a currently available port number is used instead of fixing 80. The CreateJob response packet shown in FIG. 5 is an example in which “10000” (indicated by reference numeral 501) is used as a port number. In the present embodiment, “10001” and “1000” are used every time a print request is received. 10002 ",... Similarly, the job identifier 502 is changed to 1, 2,... For each print request.
[0037]
Next, in step S604, the printing apparatus 101 generates XML data as a response to the CreateJob packet. At this time, the URL of the port generated for receiving the print data is set as the value of the <data-sink-uri> tag. For example, a URL as shown in FIG. 5 is embedded in the XML data. Then, in step S605, the printing apparatus 101 transmits the CreateJob response data generated in step S604 to the host computer using SOAP.
[0038]
Upon receiving the CreateJob response data, the host computer transmits print data to the URL specified by the <data-sink-uri> tag using the HTTP POST method. The print data transfer packet by the HTTP POST method has, for example, a configuration as shown in FIG. As shown in FIG. 7, since the path portion of the value of the <data-sink-uri> tag of the CreateJob response generated in step S604 is directly specified as the destination of the POST method, the printing apparatus 101 Can be identified.
[0039]
After transmitting the CreateJob response, the printing apparatus 101 starts a timer for a predetermined time, for example, 30 seconds in step S606. This timer is provided corresponding to the port generated in step S603. Subsequently, in step S607, before the 30-second timer times out, the printing apparatus 101 receives print data from the host computer on the designated print port (the port with the port number “10000” in the example of FIG. 5). It is determined whether or not has been started. Here, if the reception of the print data to the designated print port is started before the timeout of the timer, all the data is received, and the printer engine 17 prints while performing appropriate processing. When the reception of the print data ends normally, in step S608, the printing apparatus 101 transmits, for example, an HTTP response packet as shown in FIG. 8 to the host computer, deletes (closes) the print port, and ends the print operation. .
[0040]
On the other hand, if it is determined in step S607 that the reception of the print data from the host computer has not been started at the designated print port before the timer of 30 seconds times out, that is, the timer is started before the reception of the print data starts. If a timeout occurs, the printing apparatus 101 closes the print port generated in step 603 in step S609. Here, when the host computer transmits print data, a SYN (synchronization of sequence number; meaning connection request) packet at the TCP level is transmitted from the host computer. For the SYN packet transmitted after being closed, an RST (reset) packet is returned from the printing apparatus 101 to the host computer, and a connection between the host computer and the printing apparatus 101 cannot be established. Cannot be sent.
[0041]
In step S606, a timer for a predetermined time, for example, 30 seconds, is started. However, in step S606, a time-out measurement start time is stored in association with the port generated in step S603, and in step S607, Alternatively, it may be determined whether a predetermined time has elapsed from the measurement start time.
[0042]
If it is determined in step S602 that there is an error, the printing apparatus 101 generates, for example, error response data as shown in FIG. 9 in step S610. Then, in step S605, the printing apparatus 101 transmits an error response to the host computer. Upon receiving the error response, the host computer ends the process without transmitting the print data.
[0043]
In the present embodiment, an example has been described in which the print port number can be changed from "10000" to "10001", "10002", etc., but it is not always necessary to sequentially increase the port number from "10000". Further, when printing is completed, the printing apparatus 101 closes the port, so that a port with the same number can be used after a certain period of time.
[0044]
As described above, in the present embodiment, the print port is dynamically changed for each print request, and the timeout period is managed for each port, so that the management of the reception of print data for each print request is performed by a simple process. be able to. In addition, by closing the port that has timed out, all subsequent connection requests can be rejected, and unnecessary network traffic can be prevented from occurring.
[0045]
An object of the present invention is to supply a storage medium (or a recording medium) in which a program code of software for realizing the functions of the above-described embodiments is recorded to a system or an apparatus, and to provide a computer (or CPU) And MPU) read out and execute the program code stored in the storage medium. In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention. When the computer executes the readout program code, not only the functions of the above-described embodiments are realized, but also an operating system (OS) running on the computer based on the instruction of the program code. Performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.
[0046]
Further, after the program code read from the storage medium is written into a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the card or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.
[0047]
【The invention's effect】
As described above, according to the present invention, each time a print request from an external device is received, a different port is generated, and the print data transmitted from the external device to the port generated within a predetermined time after transmission of the response data is generated. Since it is managed whether or not data reception has been started, it is possible to simplify a process for coping with a case where print data cannot be received after responding to a print request.
[0048]
Further, according to the present invention, a different destination is allocated each time a print request from an external device is received, and it is managed whether a predetermined time has elapsed at each of the plurality of destinations. Processing for restricting data reception for each destination can be simplified.
[0049]
If the reception of the print data transmitted from the external device to the port generated within a predetermined time after the transmission of the response data is not started, the generated port is closed to reject all subsequent connection requests. It is possible to prevent unnecessary network traffic from occurring.
[Brief description of the drawings]
FIG. 1 is a diagram schematically illustrating a configuration of a printing system including a printing apparatus according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a hardware configuration of the printing apparatus 101 in FIG.
FIG. 3 is a block diagram illustrating a software program configuration in the printing apparatus 101 of FIG.
4 is a diagram illustrating an example of packet data called “CreateJob” transmitted from the host computers 102 and 103 on the network 104 of FIG. 1 to the printing apparatus 101 using SOAP over HTTP.
FIG. 5 is a diagram showing an example of response packet data for the CreateJob packet of FIG. 4;
6 is a flowchart illustrating an operation procedure of the printing apparatus 101 when the host computers 102 and 103 in FIG. 1 perform printing using the printing apparatus 101.
FIG. 7 is a diagram showing an example of a print data transfer packet transmitted from the host computers 102 and 103 of FIG. 1 by the POST method of HTTP.
8 is a diagram illustrating an example of an HTTP response packet transmitted from the printing apparatus 101 of FIG. 1 to the host computers 102 and 103.
9 is a diagram illustrating an example of an error response packet transmitted from the printing apparatus 101 of FIG. 1 to the host computers 102 and 103.
[Explanation of symbols]
12 CPU
13 ROM
16 Printing interface
17 Printer Engine
18 Network interface
101 printing device
102,103 Host computer
104 Network
301 Printer control unit
302 Image print control unit
303 XML Parser
304 SOAP control unit
305 HTTP server control unit
306 TCP / IP protocol control unit
307 Network Communication Driver

Claims (12)

A printing device capable of communicating with an external device via a network,
A print request receiving unit that receives a print request transmitted from the external device,
Port generation means for generating a port for receiving print data corresponding to the received print request,
Response means for transmitting response data including the generated port information to the external device as a response to the received print request,
Having print data receiving means for receiving at the generated port print data transmitted according to the response data from the external device,
The port generating means generates a different port each time a print request is received from the external device,
The printing apparatus, wherein the print data receiving unit manages whether or not reception of print data has been started at the generated port within a predetermined time after transmission of the response data. When the reception of the print data transmitted from the external device to the generated port is not started within a predetermined time after the transmission of the response data, a port closing unit that closes the generated port is provided. The printing device according to claim 1. The print data receiving unit is activated immediately after the transmission of the response data, and has a timer for measuring the predetermined time. The printing apparatus according to claim 1, wherein the apparatus manages whether reception of print data transmitted from the external apparatus has been started. The printing apparatus according to claim 4, wherein the timer is provided for each of a plurality of ports generated as one of ports for receiving print data of the received print request. A printing device capable of communicating with an external device via a network,
A print request receiving unit that receives a print request transmitted from the external device,
Response means for transmitting information for identifying a destination of print data corresponding to the print request received by the print request reception means as a response to the print request received by the print request reception means,
Having print data receiving means for receiving print data from the external device for the destination indicated by the information transmitted by the response means,
The response unit assigns a different destination to each of the plurality of print requests,
The printing apparatus, wherein the print data receiving unit limits reception of print data to each of the plurality of destinations after a lapse of a predetermined time after information is transmitted by the response unit. In response to the information being transmitted by the response unit, in association with the destination indicated by the information, having a time management unit that starts measuring time,
6. The printing apparatus according to claim 5, wherein the print data receiving unit limits reception of print data to the destination after the time measured in association with the destination reaches a predetermined time. In response to the information being transmitted by the response unit, the time management unit has a time management unit that stores a time in association with a destination indicated by the information,
The printing apparatus according to claim 5, wherein the print data receiving unit limits reception of print data to the destination after a predetermined time has elapsed from a time stored in association with the destination. A print processing method for printing a print job transmitted from an external device via a network by a printing device,
A print request receiving step of receiving a print request transmitted from the external device,
A port generation step of generating a port for receiving print data corresponding to the received print request;
A response step of transmitting response data including the generated port information to the external device as a response to the received print request,
A print data receiving step of receiving at the generated port print data transmitted according to the response data from the external device,
In the port generation step, each time a print request from the external device is received, a different port is generated,
In the print data receiving step, a print processing method is provided which manages whether reception of print data has been started at the generated port within a predetermined time after transmission of the response data. A print processing method for printing a print job transmitted from an external device via a network by a printing device,
A print request receiving step of receiving a print request transmitted from the external device,
A response step of transmitting information for identifying a destination of print data corresponding to the print request received in the print request receiving step as a response to the print request received in the print request receiving step;
A print data receiving step of receiving print data from the external device for the destination indicated by the information transmitted in the response step,
In the response step, a different destination is assigned to each of the plurality of print requests,
In the print data receiving step, at each of a plurality of destinations, reception of print data to the destination is restricted after a predetermined time has elapsed after information is transmitted by the response unit. A program executed on a printing device for printing a print job transmitted from an external device via a network,
A print request receiving module that receives a print request transmitted from the external device,
A port generation module that generates a port for receiving print data corresponding to the received print request;
A response module for transmitting response data including the generated port information to the external device as a response to the received print request,
A print data receiving module that receives print data transmitted from the external device in response to the response data at the generated port,
The port generation module generates a different port each time a print request from the external device is received,
The print data reception module manages whether or not reception of print data has been started at the generated port within a predetermined time after transmission of the response data. A program executed on a printing device for printing a print job transmitted from an external device via a network,
A print request receiving module that receives a print request transmitted from the external device,
A response module that transmits information identifying a destination of print data corresponding to the print request received by the print request reception module as a response to the print request received by the print request reception module;
A print data receiving module that receives print data from the external device for the destination indicated by the information transmitted by the response module,
In the response module, a different destination is assigned to each of the plurality of print requests,
In the print data receiving module, at each of a plurality of destinations, reception of print data to the destination is restricted after a predetermined time has elapsed after information is transmitted by the response unit. A storage medium, wherein the program according to claim 10 or 11 is stored in a computer-readable manner.

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