JP2007004217A - Network print system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To print document data on an intranet without imposing an excess load onto a print server not through a user terminal, in a network print system having the print server on the Internet and a printer controlled thereby. <P>SOLUTION: In this network print system 10 wherein the print server 1 and the printer 2 are disposed on the Internet N1, a document management server 3 is disposed on the intranet N2, and a relay server 4 is disposed on the Internet N1. The document management server 3 transfers the document data to the relay server 4 when receiving a print instruction for the specific document data from a user. The relay server 4 stores the transferred document data, so as to be specified by document specification information. The print server 1 receives notification of the document specification information, acquires the document data from the relay server 4 on the basis of the document specification information, and makes the printer 2 print them. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a network print system having a print server arranged on a network and a printer which is controlled by the print server and performs printing.

  FIG. 3 is a block diagram showing a configuration of the existing network print system 100. In the network print system 100 shown in FIG. 3, a print server 101 and a plurality of printers 102 controlled by the print server 101 are arranged on the Internet N1. Physically, a plurality of printers 102 are installed in stores such as convenience stores around the country, and the print server 101 is installed in the center of a company that provides a network print service.

  The network print system 100 having the above configuration provides the following print service. That is, the user uploads document data desired to be printed to the print server 101 from the user terminal 106 on the Internet N1. When the print server 101 receives the document data from the user terminal 106, the print server 101 saves the document data and issues a print ID (also called a pass code) for specifying the document data to the user by e-mail or the like. . When the user is issued a print ID, the user moves to an arbitrary installation location of the printer 102, operates the operation panel of the printer 102, and inputs the issued print ID to the printer 102. The printer 102 sends the input print ID to the print server 101, and the print server 101 sends the document data specified by the print ID to the printer 102. The printer 102 receives document data from the print server 101, prints this document data on paper, and outputs it. Accordingly, if there is a terminal connected to the Internet, the user can print out a desired document with the printers 102 in various parts of the country.

  Incidentally, Patent Document 1 discloses a network printing system 200 shown in FIG. In this network printing system 200, a portable terminal 201, a client terminal 202, a print server 203, and a printer 204 are connected to the Internet, and data is printed as follows. That is, the user connects to the client terminal 202 using the mobile terminal 201, selects data existing in the client terminal 202, and makes an output request for the data. When the client terminal 202 receives a data output request from the user, the client terminal 202 transmits the data to the print server 203. The print server 203 issues a reception number associated with the data, and transmits this reception number to the mobile terminal 201 via the client terminal 202. The user moves to the printer 204 and inputs a reception number using a reception number input unit provided in the printer 204. The printer 204 acquires data corresponding to the input receipt number from the print server 203 and prints it.

  Patent Document 2 receives a URL (URL specified by a user) transmitted from a mobile terminal, imports an html file as image data from a web site based on the URL on the Internet, and prints the image data. An out-of-function system is disclosed.

JP 2003-110553 A JP 2003-069784 A JP 2000-1112927 A JP 2002-140239 A JP 2003-099229 A

  In FIG. 3, in the existing network print system 100, when the document data D existing on the intranet N2 is to be printed, the user once downloads the document data D to the user terminal 106 and then uploads it to the print server 101. Will be. For this reason, there are problems that it takes time for the user, the user terminal 106 needs a storage area for document data, and it takes communication time. For this reason, there is a demand for printing the document data existing on the intranet without going through the user terminal in the network print system.

  Here, with reference to the technology described in Patent Document 1, a method for meeting the above-mentioned request is that a server on the intranet transfers document data to a print server in response to an instruction from a user terminal. It is done. However, in this method, document data is transmitted to the print server at the time of a print request. Therefore, when print requests are concentrated, there is a risk that network resources and storage resources related to the print server may be compressed. When there are a large number of intranets, the print server accepts print requests from a large number of intranets, and the print server may be subject to a DoS attack (denial of service attack).

  With reference to the technique described in Patent Document 2, as another method for satisfying the above request, the user designates the address of the document data to the print server and makes a print request. It is also possible to acquire document data from a document. However, since access from the Internet to the intranet is usually limited, a print server on the Internet cannot obtain document data in the intranet, and this method is not appropriate.

  Therefore, according to the present invention, in a network print system having a print server arranged on a first network and a printer that performs printing controlled by the print server, access from the first network is limited. A network print system capable of printing document data existing on the network without passing through a user terminal and without placing an excessive load on the print server is provided.

  The present invention relates to a print server arranged on a first network, a printer controlled by the print server for printing, and a document existing on a second network to which access from the first network is restricted. A document management server disposed on the second network for managing data; and a relay server disposed on the first network, wherein the document management server Upon receiving a print instruction, the document data is transferred to the relay server, and the relay server stores the document data transferred from the document management server so that it can be specified by document specifying information. The print server Receives notification of specific information, acquires document data from the relay server based on the document specific information, and prints the document data to the printer. Make, characterized in that.

  In a preferred aspect of the present invention, upon receiving a print instruction for specific document data from a user, the document management server transfers the document data to the relay server, and the relay server receives the document management server from the document management server. The transferred document data is registered in a specific registration location, and address information indicating the registration location is notified to the print server. When the print server receives the address information from the relay server, the print data is associated with the address information. When the printer receives an input of the print ID from the user, sends the input print ID to the print server, and the print server receives the print ID from the printer The document data acquired from the relay server based on the address information associated with the print ID is sent to the printer. The printer receives the document data from the print server to print the the document data.

  In another preferable aspect of the present invention, when the document management server receives a print instruction for specific document data from a user, the document management server transfers the document data to the relay server, and the relay server Document data transferred from the document management server is registered in a specific registration location, address information indicating the registration location is notified to the print server, and when the print server receives the address information from the relay server, the address The information is stored in association with a user ID for identifying the user, and the printer receives an input of the user ID from the user, sends the input user ID to the print server, and the print When the server receives the user ID from the printer, the server returns address information associated with the user ID to the printer, and the printer The address information received from the print server is presented to the user, the address information is selected, the selected address information is sent to the print server, and the print server receives the address information from the printer. The document data acquired from the relay server based on the address information is sent to the printer. When the printer receives the document data from the print server, the printer prints the document data.

  In the above two preferred modes, in a preferred mode, the relay server registers the document data transferred from the document management server in a specific registration location, and stores address information indicating the registration location in the document management server. The document management server notifies the print server of address information indicating the registration location.

  In a preferred aspect of any of the above inventions, a plurality of the second networks exist, and the document management server and the relay server are provided for each second network.

  According to the present invention, in a network print system having a print server arranged on a first network and a printer that performs printing controlled by the print server, access from the first network is limited. The document data existing on the network can be printed without going through the user terminal and without placing an excessive load on the print server.

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

[First Embodiment]
FIG. 1 is a block diagram showing a configuration of a network print system 10 according to the present embodiment. The network print system 10 is a system that prints data existing on the intranet N2 by the printer 2 on the Internet N1 by operating the user terminal 6. In simple terms, documents on office servers (on the company intranet) can be printed out by any printer installed at convenience stores throughout the country by operating a mobile terminal connected to the Internet. This is a system that provides a network print service.

  In FIG. 1, an intranet N2 is connected to the Internet N1 via a firewall 5. The firewall 5 is configured to permit communication of a request from a computer on the intranet N2 to a computer on the Internet N1 and a response to the request, and disallow other communication. Therefore, it is impossible to access a computer or data on the intranet N2 from the computer side on the Internet N1.

  As shown in FIG. 1, the network print system 10 includes a print server 1, a printer 2, a document management server 3, and a relay server 4. Among these, the print server 1, the printer 2, and the relay server 4 are arranged on the Internet N1, and the document management server 3 is arranged on the intranet N2. Preferably, the print server 1 and the printer 2 are owned by a service provider that provides a network print service, and the document management server 3 and the relay server 4 are service providers that use the network print service. It is what you own.

  The print server 1 is a computer that receives a print request from an external information processing apparatus, converts document data related to the print request into data for printing as appropriate, sends the data to the printer 2, and causes the printer 2 to print. The print server 1 is installed at the center of a service provider, for example.

  The printer 2 is a printing device that is controlled by the print server 1 and prints document data. Although only one printer 2 is shown in FIG. 1, it is preferably a plurality of printers, and each printer 2 is installed, for example, in a store such as a convenience store throughout the country.

  The document management server 3 is a computer that manages document data existing on the intranet N2. This document management server 3 mainly serves to receive a print instruction for specific document data on the intranet N2 from the user terminal 6 and to transfer the document data related to the print instruction to the relay server 4.

  The relay server 4 is a computer accessible from the document management server 3 and the print server 1. The relay server 4 mainly serves to receive the document data transferred from the document management server 3 and store the document data so that it can be specified by the document specifying information. Here, the document specifying information may be any information as long as the document data can be specified. However, in this embodiment, the document specifying information is address information indicating a registration location of the document data, and specifically, a URL (Uniform Resource Locator). is there. That is, the relay server 4 registers the document data transferred from the document management server 3 in a specific registration location on the Internet N1 so that it can be specified by a URL.

  The document specifying information (URL here) is notified from the relay server 4 to the print server 1 through an appropriate route, and the print server 1 acquires document data from the relay server 4 based on the notified document specifying information. Then, the acquired document data is printed on the printer 2. As a form of notification of document specific information, a form in which the relay server 4 directly notifies the print server 1, a form in which the relay server 4 notifies the print server 1 via the document management server 3, and a form in which the relay server 4 notifies the user. A form in which the user operates the printer 1 or the user terminal 6 to notify the print server 1 can be used.

  Each function of the print server 1, the document management server 3, and the relay server 4 is executed by a CPU (Central Processing Unit) by a predetermined program stored in a recording medium such as a ROM (Read Only Memory) or a hard disk. Is realized.

  Next, the operation of the network print system 10 having the above configuration will be described with reference to FIG. In this example, a user (for example, a member of a service provider) accesses the document management server 3 in the intranet N2 through a VPN (Virtual Private Network) using the user terminal 6 connected to the Internet N1. I will explain to you. However, the user may access the document management server 3 using the user terminal 6 connected to the intranet N2. The user terminal 6 is a computer, such as a personal computer, a personal digital assistant (PDA), or a mobile phone.

  The user connects to the intranet N2 using the user terminal 6, and issues a print instruction for specific document data on the intranet N2 to the document management server 3. For example, the user terminal 6 accesses the document management server 3 based on the user's operation, acquires a list of document data on the intranet N2, displays this list on the screen, and issues a print instruction on the screen. Accept. Upon receiving a print instruction for specific document data from the user, the user terminal 6 transmits this print instruction to the document management server 3 (S1).

  Upon receiving a print instruction from the user terminal 6, the document management server 3 transmits a registration request including document data (document data to be printed) related to this print instruction to the relay server 4 (S2).

  When the relay server 4 receives the registration request from the document management server 3, the relay server 4 stores the document data included in the registration request in a specific storage area, and a URL (hereinafter, “ (Referred to as “document URL”), and this document URL is transmitted to the document management server 3 as a response (S3).

  Upon receiving the document URL from the relay server 4, the document management server 3 transmits a print request including this document URL to the print server 1 (S4).

  When the print server 1 receives the print request from the document management server 3, the print server 1 makes a request for document data to the relay server 4 based on the document URL included in the print request (S5). On the other hand, the document data specified by the document URL is returned to the print server 1 (S6). Note that the timing at which the print server 1 requests the document data may be any timing as long as the print server 1 receives the print request and transmits the print data to the printer 2. The relay server 4 may delete the document data registered in the relay server 4 after transmitting the document data to the print server 1.

  Further, when receiving a print request from the document management server 3, the print server 1 issues a print ID to the user who has given the print instruction (S7), and stores this print ID in association with the document URL. Here, the print server 1 can issue a print ID to the user by an appropriate method. Specifically, the print server 1 may transmit a mail including a print ID to the user's mail address, or may return a message including the print ID in response to a print ID inquiry from the user. Good. In order for the print server 1 to issue a print ID to the user, the print server 1 needs to know the user who issued the print instruction, but the print server 1 identifies the user by an appropriate method. I can know. Here, it is assumed that the document management server 3 authenticates the user when receiving a print instruction from the user, and transmits the identification information of the authenticated user to the print server 1 in a print request.

  The user who has issued the print ID moves to the installation location of the printer 2 and inputs the print ID to the printer 2 (S8). At this time, the user can use any one of the many printers 2 installed in various places, for example, the printer 2 installed in the nearest convenience store. As a method for inputting the print ID, in addition to direct input using a touch panel or a keyboard provided in the printer 2, input by wireless communication such as infrared communication linked with an application of the user terminal 6 can be cited.

  When the printer 2 receives the input of the print ID from the user, the printer 2 makes an inquiry to the print server 1 by presenting the input print ID (S9).

  When receiving an inquiry from the printer 2, the print server 1 determines whether or not the presented print ID exists in the print IDs stored in the print server 1. If it is determined that it exists, the document URL associated with the print ID is specified, the document data acquired from the relay server 4 based on the document URL is converted into print data, and the printer 2 (S10). If it is determined that the print server 1 does not exist, the print server 1 notifies the printer 2 to that effect.

  Upon receiving the print data from the print server 1, the printer 2 prints this print data (S11). As a result, the user can obtain a printed matter of the document data instructed to be printed in step S1. When notified that the print ID does not exist, the printer 2 notifies the user to that effect through a screen display or the like.

  Note that the document data held in the relay server 4 or the print server 1 is preferably deleted if it is not printed within the expiration date (for example, within a predetermined period after the print instruction) from the viewpoint of security.

  The communication between the devices is preferably encrypted communication such as SSL (Secure Sockets Layer) from the viewpoint of preventing data leakage on the communication path.

  In addition, mutual authentication such as SSL is preferably performed between the above devices from the viewpoint of preventing impersonation of each device.

  In the above configuration, the print ID functions as information for specifying the document data, and also guarantees the identity between the user who gives a print instruction to the document management server 3 and the user who receives the printed matter at the printer 2. It functions as authentication information for printing or permission information for limiting who receives prints. Here, when the print ID is caused to function as authentication information, it is preferable that the print ID is difficult to guess and that only the user who has given the print instruction is notified. Further, when functioning as permission information, it is preferable that the print ID is difficult to guess and that only the user who is permitted to receive the printed material is notified.

  Further, in the above configuration, it is preferable that authentication information such as a password is input to the printer 2 in addition to the print ID. For example, the following configuration is preferable. That is, the document management server 3 accepts a password setting from a user when receiving a print instruction, and passes the set password to the print server 1 in a print request. The print server 1 stores the password included in the print request in association with the document URL and the print ID. The printer 2 accepts input of a print ID and password from the user and sends them to the print server 1. The print server 1 collates the print ID and password based on the stored data, and transmits the print data on condition that the collation is successful. In this way, even if the print ID leaks, it is possible to prevent printing by a third party.

  In the above configuration, the print server 1 issues the print ID. However, the relay server 4 or the document management server 3 may issue the print ID.

  According to the present embodiment described above, the following effects can be obtained.

  (A) In the present embodiment, access from the Internet N1 is restricted in a network print system having a print server 1 arranged on the Internet N1 and a printer 2 that is controlled by the print server 1 and performs printing. A document management server 3 that manages document data existing on the intranet N2 is arranged on the intranet N2, and a relay server 4 that receives document data upload from the document management server 3 is arranged on the Internet N1. When the document management server 3 receives a print instruction for specific document data, the document management server 3 transfers the document data to the relay server 4, and the relay server 4 stores the transferred document data so that it can be specified by the document specification information. The print server 1 receives the notification of the document specifying information, acquires the document data from the relay server 4 based on the document specifying information, and causes the printer 2 to print the acquired document data. For this reason, according to the present embodiment, access from the Internet is restricted by using a network print system having a print server arranged on the Internet and a printer that is controlled by the print server and performs printing. Document data existing on the intranet can be printed without going through the user terminal and without placing an excessive load on the print server. More specifically, since the document data is transferred from the document management server 3 to the print server 1 via the relay server 4, the procedure of once downloading to the user terminal and then uploading to the print server becomes unnecessary. . As a result, it is possible to print a document on an intranet even with a user terminal having a small storage area such as a mobile phone. Further, the document data is once transferred to the relay server 4, and the print server 1 is notified of the document specifying information (document URL) having a small data size, and the print server 1 can acquire the document data according to its own schedule. The concentration of document data uploading to the print server 1 can be avoided.

  (B) When there are a plurality of intranets N2, if the relay server 4 and the document management server 3 are prepared for the plurality of intranets N2, respectively, the storage cost of the document data can be distributed and the communication of the relay server 4 Since the destination can be limited to a specific intranet N2 or the document management server 3, it is easy to protect against attacks such as a DoS attack (Denial of Service attack) by filtering or the like. In addition, for attacks from inside the intranet N2, which is a legitimate user, the attackers are easily identified because they are within a specific network, and the scope of damage caused as a result of the attack is closed by the network to which the attacker belongs. Therefore, a psychological suppression effect can be expected.

  (C) In the print server 1, if the relay server 4 that accepts the print request is registered in advance, the resistance to the DoS attack is increased by rejecting the print request including the URL of the unregistered computer. Can do. Even if an attacker sends a print request including a URL including the server name of a specific relay server 4 to the print server 1 without going through the document management server 3, the relay server 4 does not receive the document management server 3. Since the entire URL returned to is unknown, it can be seen that the print server 1 is a fake print request when requesting document data from the relay server 4.

  (D) If the print server 1 authenticates with the document management server 3 and rejects anything other than the print request from the regular document management server 3, the entire URL generated by the relay server 4 is leaked. Even in this case, a fake print request from a computer other than the regular document management server 3 can be rejected, and safety is improved. In the above embodiment, the document management server 3 makes a print request, but the relay server 4 may make a print request. In this case, authentication between the relay server 4 and the print server 1 can prepare for leakage of the URL generated by the relay server 4.

  (E) By associating the intranet N2 and the relay server 4 in advance, information such as the number of print requests and the number of prints for each intranet N2 can be aggregated, and can be used for charging a printing fee. it can.

[Second Embodiment]
FIG. 2 is a block diagram showing a configuration of the network print system 20 according to the present embodiment. The network print system 20 has almost the same configuration and operation different from the network print system 10 according to the first embodiment. Hereinafter, the network print system 20 will be described, but portions common to the network print system 10 are denoted by the same reference numerals and description thereof is omitted.

  Hereinafter, the operation of the network print system 20 will be described with reference to FIG.

  The user terminal 6 transmits an access request to the document management server 3 based on a user operation. Then, the document management server 3 performs user authentication processing with the user terminal 6 by an appropriate method using an ID / password, an electronic certificate, or the like, and if the authentication is successful, the document on the intranet N2 A list of data is transmitted to the user terminal 6. The user terminal 6 displays a list from the document management server 3 on the screen and accepts a print instruction from the user on the screen. When the user terminal 6 receives a print instruction for specific document data from the user, the user terminal 6 transmits the print instruction to the document management server 3 (S21).

  Upon receiving a print instruction from the user terminal 6, the document management server 3 transmits a registration request including document data (document data to be printed) related to this print instruction to the relay server 4 (S22).

  When the relay server 4 receives the registration request from the document management server 3, the relay server 4 stores the document data included in the registration request in a specific storage area, and a URL (hereinafter, “ The document URL "is generated, and this document URL is transmitted to the document management server 3 as a response (S23).

  When the document management server 3 receives the document URL from the relay server 4, the document management server 3 issues a print request including the document URL and the user ID for identifying the authenticated user (the user who issued the print instruction) to the print server. 1 (S24). Here, it is preferable that the print request further includes signature data for guaranteeing the validity of the user ID.

  When the print server 1 receives the print request from the document management server 3, the print server 1 requests the relay server 4 for document data based on the document URL included in the print request (S25). On the other hand, the document data specified by the document URL is returned to the print server 1 (S26). Note that the timing at which the print server 1 requests the document data may be any timing as long as the print server 1 receives the print request and transmits the print data to the printer 2. The relay server 4 may delete the document data registered in the relay server 4 after transmitting the document data to the print server 1.

  When the print server 1 receives a print request from the document management server 3, the print server 1 holds the document URL and the user ID included in the print request in association with each other.

  The user, after giving the print instruction, moves to the installation location of the printer 2, and the user ID of the user or information associated with the user ID (substantially the user ID). ) Is input (S27). At this time, the user can use any one of the many printers 2 installed in various places, for example, the printer 2 installed in the nearest convenience store. As a method for inputting the user ID, in addition to direct input using a touch panel or a keyboard provided in the printer 2, input by wireless communication such as infrared communication linked with an application of the user terminal 6 can be cited. If the organization to which the user belongs has introduced a contactless ID card having an IC card function, the user inputs the user ID by holding his / her contactless ID card over the reader on the printer 2 side. can do.

  Upon receiving the user ID input from the user, the printer 2 makes an inquiry to the print server 1 by presenting the input user ID (S28).

  When the print server 1 receives an inquiry accompanying the presentation of the user ID from the printer 2, the printer 2 displays a list of document URLs held in the print server 1 that are associated with the presented user ID. (S29).

  When the printer 2 receives the list of document URLs from the print server 1, the printer 2 displays this list on the screen, accepts a selection input of the document URL from the user on this screen, and sends the selected document URL to the print server 1. Transmit (S30).

  Upon receiving the document URL from the printer 2, the print server 1 converts the document data acquired from the relay server 4 based on the document URL into print data and transmits it to the printer 2 (S31).

  When receiving the print data from the print server 1, the printer 2 prints the print data (S32). As a result, the user can obtain a printed matter of the document data instructed to be printed in step S21.

  In the above description, the list of document URLs is presented to the user. Instead, information associated with the document URL such as the name and thumbnail of the document data (substantially the document URL) You may present a list of

  According to the present embodiment described above, the effects (a) to (e) can be obtained as in the first embodiment. In the first embodiment, in order to ensure the identity between the user who has issued the print instruction to the document management server 3 and the user who has issued the print instruction to the printer 2, However, as apparent from the present embodiment, the mechanism for ensuring the identity of the user is not limited to the method using the print ID.

  In addition, this invention is not limited to the said embodiment, It can change variously within the range which does not deviate from the summary of this invention. For example, the user who gives a print instruction to the document management server 3 and the user who gives a print instruction to the printer 2 may be different people. In the above embodiment, the first network is the Internet and the second network is an intranet. However, the types of the first and second networks are not particularly limited. Also, some or all of the functions of the print server 1 may be built in the printer 2.

1 is a block diagram illustrating a configuration of a network print system according to a first embodiment. It is a block diagram which shows the structure of the network print system which concerns on 2nd Embodiment. It is the schematic which shows the structure of the existing network print system. 1 is a diagram illustrating a network printing system disclosed in Patent Document 1. FIG.

Explanation of symbols

  1 print server, 2 printer, 3 document management server, 4 relay server, 5 firewall, 6 user terminal, 10, 20 network print system.

Claims (5)

A print server located on the first network;
A printer for printing controlled by the print server;
A document management server arranged on the second network for managing document data existing on a second network to which access from the first network is restricted;
A relay server disposed on the first network;
Have
Upon receiving a print instruction for specific document data, the document management server transfers the document data to the relay server,
The relay server stores the document data transferred from the document management server so that the document specifying information can be specified;
The print server receives notification of document specifying information, acquires document data from the relay server based on the document specifying information, and causes the printer to print the document data.
A network print system characterized by that. The network print system according to claim 1,
Upon receiving a print instruction for specific document data from a user, the document management server transfers the document data to the relay server,
The relay server registers the document data transferred from the document management server in a specific registration location, notifies the print server of address information indicating the registration location,
Upon receiving the address information from the relay server, the print server issues a print ID associated with the address information to the user,
The printer receives an input of a print ID from a user, sends the input print ID to the print server,
When the print server receives a print ID from the printer, the print server sends document data acquired from the relay server based on address information associated with the print ID to the printer.
When the printer receives document data from the print server, the printer prints the document data.
A network print system characterized by that. The network print system according to claim 1,
Upon receiving a print instruction for specific document data from a user, the document management server transfers the document data to the relay server,
The relay server registers the document data transferred from the document management server in a specific registration location, notifies the print server of address information indicating the registration location,
When receiving the address information from the relay server, the print server stores the address information in association with a user ID for identifying the user,
The printer receives an input of a user ID from a user, sends the input user ID to the print server,
Upon receiving a user ID from the printer, the print server returns address information associated with the user ID to the printer,
The printer presents the address information received from the print server to the user, receives a selection of the address information, sends the selected address information to the print server,
Upon receiving the address information from the printer, the print server sends the document data acquired from the relay server based on the address information to the printer,
When the printer receives document data from the print server, the printer prints the document data.
A network print system characterized by that. The network print system according to claim 2 or 3,
The relay server registers the document data transferred from the document management server in a specific registration location, notifies the document management server of address information indicating the registration location,
The network management system, wherein the document management server notifies the print server of address information indicating the registration location. The network print system according to any one of claims 1 to 4,
A network printing system, wherein a plurality of the second networks exist, and the document management server and the relay server are provided for each of the second networks.

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