KR20050032472A - Network image forming apparatus having a function of information exchange among users and a method operation controlling thereof - Google Patents

Abstract

A network image forming apparatus capable of exchanging information and a method for controlling thereof are provided to prepare an alarm function for users in order to easily exchange the information. An interface(160) transmits and receives data with a user terminal. A storing unit(230) stores shared information transmitted from the user terminal. When a network image forming apparatus receives an instruction for starting an action from a user terminal, the network image forming apparatus transmits the shared information to the corresponding user terminal. A controller(170) controls the interface(160) to transmit the shared information to the corresponding user terminal. The shared information includes information data inputted through the user terminal, ID data of the user terminal, or time data notifying the inputted time of the data.

Description

Network Image Forming Apparatus having a function of information exchange among users and a method operation controlling etc}

The present invention relates to a network image forming apparatus connected to a plurality of user terminals on a network and an operation control method thereof.

A network printer system refers to a printer as one printer, that is, a print server, and a plurality of computers are connected through a local area network (LAN) and transfer print data from the plurality of computers to the print server. It refers to a network system in which a print job is performed by spooling print data from a server and sequentially transmitting the print data to a printer. Such a network printer system can implement a low-cost office automation system by allowing a plurality of users to share a single printer, so many offices have such a network printer system.

When using a network printer system as described above, users sometimes want to share information and other precautions about the current operating state of the printer with users in the network.

For example, "Please put only the paper backing tray 2.", "Please take the printed out immediately.", "If the image is used in bad condition, jam may occur." Such as information.

In the case of exchanging information between printer users in such a network, it has conventionally been known to attach a paper with information contents to a printer. As a result, users in the network have a problem in that they cannot see the information attached to the printer until they find the printed matter. In addition, there is a problem in that it is often inefficient to display the shared information on the network which is often generated by handwriting.

Accordingly, an object of the present invention is to provide a network image forming apparatus having a notification function that can facilitate information exchange between users on a network, and an operation control method thereof.

A network image forming apparatus for printing print data transmitted from a plurality of user terminals connected on a network for achieving the above object, comprising: an interface unit for transmitting and receiving to and from a user terminal and a plurality of user terminals. It has a storage unit for storing the shared information.

Preferably, when the operation start command is received from any one of the plurality of user terminals via the interface unit, the control unit for controlling the interface unit to transmit the shared information stored in the storage unit to the user terminal that sent the operation start command.

Here, the sharing information includes at least one of information data input through the user terminal, identification data of the user terminal, and time data into which the information data is input.

In this case, the data transmitted and received through the interface unit is at least one of shared information, print data, operation start command.

On the other hand, in the operation control method of the network image forming apparatus for printing the print data transmitted from a plurality of user terminals connected on the network of the present invention, storing the shared information transmitted from any one of the plurality of user terminals, a plurality Receiving an operation start command from any one of the user terminal of the, and transmitting the stored shared information to the user terminal that sent the operation start command.

Here, the sharing information includes at least one of information data input by the user terminal, identification data of the user terminal, and time data into which the information data is input.

A network system comprising a plurality of user terminals according to the present invention, and an image forming apparatus for printing print data transmitted from the plurality of user terminals, the network system comprising: a plurality of user terminals for transmitting sharing information on a network to the image forming apparatus; And an image forming apparatus storing sharing information transmitted from any one of the plurality of user terminals, wherein the image forming apparatus transmits an operation start instruction to the stored sharing information when an operation start instruction is transmitted from any one of the plurality of user terminals. Send to one user terminal.

Preferably, the user terminal corresponds to a first interface unit for transmitting and receiving sharing information from the image forming apparatus, a setting screen generation unit for generating a notification screen for displaying and recording the sharing information, and when the sharing information is received. And a first controller configured to control the setting screen generator to generate a notification screen.

In this case, when the predetermined information data is recorded on the notification screen, the first controller controls the first interface unit to transmit the information data, the identification data, and the time data to the image forming apparatus.

Also, preferably, the image forming apparatus may include at least one of a second interface unit for transmitting and receiving sharing information from a user terminal, a storage unit storing sharing information transmitted from the user terminal through the second interface unit, and a plurality of user terminals. When the operation start command is received, the control unit includes a second control unit for controlling the second interface unit to transmit the shared information stored in the storage unit to the user terminal transmitting the operation start command.

Here, the sharing information includes at least one of information data recorded by the user terminal, identification data of the user terminal, and time data into which the information data is input.

On the other hand, in the operation control method of a network system having a plurality of user terminals according to the present invention and an image forming apparatus for printing the print data transmitted from the plurality of user terminals, (a) sharing on the network input to the user terminal Transmitting information to the image forming apparatus; and (b) when the image forming apparatus transmits an operation start command from one of the plurality of user terminals, transmitting the pre-stored shared information to the user terminal that has transmitted the operation start command. It includes.

Preferably, the step (a) comprises the steps of generating and displaying a notification screen for displaying and recording the shared information, recording predetermined information data using the notification screen, and recording identification data and information data of the user terminal. Detecting the received time data, and transmitting the information data, the identification data, and the time data to the image forming apparatus.

Preferably, step (b) includes storing sharing information transmitted from any one of the plurality of user terminals, and if an operation start command is transmitted from any one of the plurality of user terminals, The pre-stored shared information is transmitted to the user terminal.

Here, the sharing information includes at least one of information data recorded by the user terminal, identification data of the user terminal, and time data into which the information data is input.

On the other hand, in the operation control method of a network system comprising a plurality of user terminals including a first terminal and a second terminal according to the present invention, and an image forming apparatus for printing print data transmitted from the plurality of user terminals, a) generating a user list of information on the users of the user terminal, and (b) a second terminal using the selected user by using a message inputted to the first terminal by selecting a specific user from the generated user list Sending to.

Preferably, step (a) is a step of transmitting a command for requesting a user list including information on the image forming apparatus from the first terminal to the second terminal, and determining whether to respond to the command from the second terminal. Storing information on the user of the second terminal in the first terminal when there is a response to the command.

Also, preferably, the step (a) may include determining whether a command for requesting a user list including information on the image forming apparatus is received from the first terminal when there is no response to the command, requesting the user list. Determining whether the information about the image forming apparatus included in the command for requesting the user list and the information about the image forming apparatus used by the first terminal match when the command is received; If the information is matched, the method further includes the step of transmitting the information about the first terminal user to the user terminal that sent the command for requesting the user list.

The information on the image forming apparatus is any one of identification data of the image forming apparatus and an IP (Imformation Provider) address. The information about the users is at least one of the names of the users and the IP address of the user terminal.

Preferably, step (b) includes detecting an IP address of a specific user among information about the user, and transmitting a message to the detected IP address.

Meanwhile, in a network system including a plurality of user terminals according to the present invention and an image forming apparatus for printing print data transmitted from the plurality of user terminals, the user of the user terminal using information on the users of the user terminal And a plurality of user terminals for transmitting messages between them.

Preferably, the user terminal, the second interface unit for transmitting and receiving messages between the user terminal, the first setting screen generation unit for generating a dialogue service screen for the user for displaying and recording the message, and displays information about the user And a second controller configured to generate a user list by using information about the users, and to control the first setting screen generator to generate an inter-user conversation service screen corresponding to the message when the message is received.

In this case, the information on the users is at least one of the names of the users and the IP address of the user terminal.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a schematic configuration diagram of a network system having a network printer as an embodiment of a network system having a network image forming apparatus according to the present invention.

In a network system, a network printer 200 and a plurality of user terminals 100, 100-1, 100-2, which are user interfaces (UI) are interconnected through a network such as a local area network (LAN). The network printer 200 prints the print data transmitted in real time from the plurality of user terminals 100, 100-1, 100-2,... According to the transmission order.

A network system having a network printer according to the present invention is provided with a notification function that can facilitate information exchange between users of user terminals connected on a network. In other words, when a print start command is transmitted from one of the plurality of user terminals 100, 100-1, 100-2, ... to the network printer 200, the network printer 200 is pre-stored. The shared information on the network is transmitted to the one user terminal 100. At this time, the printer driver in the user terminal 100 generates and displays a predetermined notification screen in response to the shared information transmitted.

As a result, the user of the user terminal 100 can recognize information that is currently shared on the network, for example, sharing information such as precautions and other notices when using the network printer 200.

Of course, the user of the user terminal 100 may input information that you want to notify to users on the network through the notification screen. The shared information input through the user terminal 100 is transmitted to the network printer 200 in response to a predetermined control signal and stored.

Therefore, users of the network system according to the present invention can know the shared information previously stored when using the network printer 200.

FIG. 2 is a schematic block diagram of a network printer 200 connected to a personal computer 100 on a network, as an example of a network image forming apparatus according to the present invention. Will be described in more detail.

Referring to FIG. 2, the network system has a personal computer 100 and a network printer 200.

The personal computer 100 includes an input device 110, a display device 120, a memory device 130, a ROM 140, a RAM 150, an input / output interface 160, and a PC controller. 170 is provided.

The input device 110 is generally an input device such as a keyboard or a mouse, and receives a user's operation command.

The display device 120 is generally a monitor and displays an operating state of the personal computer 100 to the outside.

The storage device 130 has an application program unit 132 and a printer driver 134.

The application program unit 132 is provided with an application program for creating various documents. In addition, the printer driver 134 includes an environment setting screen reflecting user's environment setting requirements for the connected network printer 200, a notification screen displaying and recording shared information for exchanging information on a network, and a network printer 200. Create a basic setting screen including a user list of information on the user and a chat service screen for sending and receiving messages with other users.

In addition, when information data newly input on the notification screen is input, the printer driver 134 detects identification data such as identification (ID) of the personal computer 100 and time data in which the information data is input. The detected identification data and time data are transmitted to the network printer 200 together with the inputted information data.

Then, the printer driver 134 detects the IP address of the personal computer of the specific user when a message is input on the chat service screen and a specific user to be transmitted is selected from the user list. The entered message is sent to the personal computer of the specific user corresponding to the detected IP address.

The basic setting screen generated by the printer driver 134 will be described later in detail.

The ROM 140 is a nonvolatile memory device and stores various control programs necessary to implement the functions of the personal computer 100.

The RAM 150 is a volatile memory device and temporarily stores data according to program execution of the PC controller 170.

The input / output interface unit 160 is connected to the network printer 200 to perform data communication between the network printer 200 and the personal computer 100. In addition, the input / output interface unit 160 performs mutual data communication between other personal computers using the same network printer 200.

For example, the input / output interface unit 160 transmits the shared information input through the notification screen to the network printer 200 or receives the shared information transmitted from the network printer 200. Then, the message input through the chat service screen is transmitted to another personal computer, or a message transmitted from another personal computer is received.

The PC controller 170 controls the overall operation of the personal computer 100 according to a program stored in the ROM 140, and generates a user list about information on the users of the personal computer 100.

For example, when a print start command is input through the input device 110 to print a document created by a predetermined application program, the PC controller 170 controls the input / output interface 160 to control the network printer 200. Receive environment setting information and sharing information transmitted from In addition, the PC controller 170 controls the input / output interface unit 160 to receive a message transmitted from another personal computer.

In addition, the PC controller 170 controls the printer driver 134 to generate an environment setting screen and a notification screen for displaying the received environment setting information and sharing information on the display device 120. Thereafter, when the environment setting information and the sharing information are newly input through the environment setting screen and the notification screen, the PC controller 170 transmits the newly input environment setting information and the sharing information to the network printer 200.

The PC controller 170 controls the printer driver 134 to generate a chat service screen for displaying a message received from another personal computer on the display device 120. When a message is input on the created chat service screen and a specific user to be transmitted is selected from the created user list, the input message is transmitted to the personal computer of the specific user.

The network printer 200 has an operating panel 210, an interface 220, a storage 230, a printer 240, a printer controller 250, and the like.

The interface unit 220 is connected to the input / output interface 160 of the personal computer 100 to transmit and receive predetermined data from the personal computer 100.

The operation panel unit 210 includes an input unit 212 and a display unit 214.

The input unit 212 is provided with a plurality of function keys for setting various functions supported by the network printer 200, and the display unit 214 is a display element such as an LCD (Liquid Crystal Dispaly). Displays the current operation status.

The storage unit 230 stores various control programs required to implement the functions of the network printer 200, data generated during the operation of the network printer 200, information of the data, and the like.

In addition, it stores the shared information transmitted from the personal computer 100 on the network. As a result, when a print start command is received from the personal computer 100, the shared information pre-stored in the storage unit 230 is transmitted to the personal computer 100 that has sent the print start command.

The shared information stored in the storage unit 230 includes information data input by the personal computer 100, identification data of the personal computer 100, and time data into which the information data is input.

The printing unit 240 performs a print job on the print data transmitted from the plurality of personal computers on the network.

The printer control unit 250 controls the overall operation of the network printer 200.

For example, when an operation start command is transmitted from a predetermined personal computer, the printer control unit 250 displays setting information about the operating environment of the network printer 200 and shared information previously stored in the storage unit 230. Control the interface unit 220 to transmit to. In addition, when shared information is received from a plurality of personal computers, the received shared information is stored in the storage 230.

Hereinafter, a process of performing a notification function for exchanging information on a network by a network printer according to the present invention will be described in detail with reference to the accompanying drawings.

3A to 3D illustrate an environment setting screen and a notification screen generated by the printer driver 134 of the network printer according to the present invention, and FIG. 4 is a flowchart illustrating an operation control method of the network printer corresponding thereto.

Through a personal computer 100 of any one of a plurality of personal computers on the network, the user creates a predetermined document and then selects a print start command to print the created document. In this case, it is assumed that identification data such as ID of the personal computer 100 is 135.05.13.35.

That is, an icon corresponding to the print start command is selected from the selection menu of the document creating program displayed on the display device 120 of the personal computer 100, for example, by using the mouse.

When the print start command is selected, the PC controller 170 controls the input / output interface 160 to transmit a print start command to the interface unit 220 of the network printer 200 (S411).

When the print start command is transmitted, the printer control unit 250 inputs / outputs an interface unit of the personal computer 100 through the interface unit 220 with the environment setting information about the current operation environment of the printer and the shared information stored in the storage unit 230. In step S413, it transmits to 160.

The PC controller 170 provides the transmitted environment setting information and sharing information to the printer driver 134, and the printer driver 134 generates a basic setting screen based on the environment setting information and sharing information (S415).

3A illustrates a basic setting screen 300 generated by the printer driver 134. As illustrated, the basic setting screen 300 includes an environment setting screen 310 corresponding to the environment setting information and the sharing information. It has a notification screen 330 and the like.

If "paper" is selected on the environment setting screen 310, the setting information set for the printing paper is displayed on the network printer 200, and the user may change the setting information based on this.

On the other hand, if the "notification board", that is, the notification screen 330 is selected on the basic setting screen 300, as shown in Figure 3b, the shared information on the network previously stored in the storage unit 230 of the network printer 200 is It is displayed externally through the notification screen 330.

In more detail, the notification screen 330 displays the information data " Please put only the paper back into the tray2 " entered on March 5, 2003, in a predetermined personal computer (ID: 137.241.12.2). Information data input from the personal computer ID: 145.211.35.6 and the personal computer ID: 137.211.13.1, respectively, is displayed.

Therefore, the user of the personal computer 100 can view the shared information on the network, such as usage information and other precautions of the network printer 200 currently displayed on the notification screen 330.

On the other hand, the user of the personal computer 100 performs the following operation process to register the new shared information on the notification screen (300).

In addition to the shared information on the network, the notification screen 300 is provided with an icon 331 for writing new information data, "Write". Thus, the user of the personal computer 100 can enter a new information data by selecting the "write" icon 331.

When the "write" icon 331 is selected, as illustrated in FIG. 3C, an input field 332 for inputting information data and icons 333 for determining whether to register information data input in the input field 332. ) Is displayed. In this case, the icons 333 for determining whether to register are "rewrite", "registration", "cancellation", and the like.

The user enters predetermined information data in the input field 332, for example, "Currently, the copy function is not available. We will restore it as soon as possible. -Printer person 3342-" and the icon When the "register" icon is selected among the fields 333, new information data currently input in the input field 332 is displayed on the notification screen 330 as shown in FIG. 3D (S511).

At this time, the input information data is displayed on the notification screen 330, and the ID (135.08.13.35) of the personal computer which inputs the information data and the time (2003, 5, 1) when the information data is inputted are displayed on the notification screen ( 330.

After that, when the basic setting screen 300 is finished, the environment setting information and the sharing information input on the environment setting screen 310 and the notification screen 330 are networked through the input / output interface 160 of the personal computer 100. The interface unit 220 of the printer 200 is transmitted (S513).

The printer controller 250 resets the operation state of the network printer 200 based on the transmitted environment setting information, and also stores the transmitted shared information in the storage 230 (S515).

That is, the shared information stored in the storage unit 230 stores the information data input on the personal computer 100, the ID of the personal computer in which the information data is input, and the time data in which the information data is input (S515). ).

Thereafter, when a print start command is transmitted from a personal computer on the network, the printer controller 250 transmits shared information such as information data, identification data, and time data stored in the storage 230 to the predetermined personal computer. Done.

As a result, a predetermined user terminal, that is, a personal computer, displays information currently shared on the network to the outside, whereby the user can view the shared information on the network.

Therefore, the exchange of information on the use of the printer in the network can be facilitated, thereby improving the use efficiency and convenience of the network printer.

In addition, by using the network printer as described above, it is natural that not only the information exchange for the network printer but also various information exchange on the network can be performed.

5 is a flowchart illustrating a process of installing a printer driver 134 for a conversation service between users in a personal computer in the network system according to the present invention. In the network system according to the present invention, a printer driver 134 for providing a conversation service between users that enables a conversation between users using the same network printer should be installed.

Referring to FIG. 5, a user first installs a printer port in a personal computer 100 (S601).

Next, it is determined whether the printer port to be installed is a network printer port (S603). This is because the printer driver to be installed differs depending on whether the printer port to be installed is a network printer port.

If the printer port to be installed is a network printer port, the printer information and the user information are stored in the storage device 130 (S605). The printer information and the user name of the network printer 200 to be installed are stored in the storage device 130 in the process of installing a printer driver that provides a dialogue service between users of the same network printer 200.

Here, the printer information refers to an address capable of initiating a network with the network printer 200, for example, an address such as an information provider (IP) address, identification data for identifying the network printer 200, and the like. In this case, the printer identification data may be a serial number of a printer uniquely assigned to each printer or a MAC (Media Access Control) address of a network card. The user name may be input from the user during the printer driver installation process or may use the user's Windows login name.

On the other hand, if the printer port to be installed is not a network printer port, another printer driver other than the printer driver that provides a chat service between users that enables conversation between users using the same printer is installed (S607).

6 is a flowchart illustrating a process of generating a user list used for a conversation service between users in a network system according to the present invention. A user uses a user list generated by creating a message to be sent to other users, selecting a specific user among the users in the user list, and sending the message to the specific user.

Referring to FIG. 6, a user inputs a command for generating a user list using the same network printer 200 (S701). A user generates a user list generation command using the input device 110 of the personal computer 100. Here, the user list refers to other user names using the same network printer 200 and IP addresses of personal computers of other users. The user selects a specific user from the user list and sends a message to the specific user by using the dialog service menu of the printer driver menu providing the dialogue service between users.

Subsequently, according to the command for generating the input user list, a user list request command including the printer information and the user name is transmitted to another user through the network (S703). The input user list generation command is transmitted to the PC controller 170, and the PC controller 170 controls the memory 130 and the input / output interface 160 to display the printer information and the user name stored in the memory 130. The included user list request command is transmitted to the other personal computer user using the same network printer 200 through the input / output interface 160.

In operation S705, it is determined whether there is a response to the user list request command transmitted to the other personal computer user.

If there is a response to the user list request command, the other personal computer IP address and the user name received from another personal computer user are stored in the user list (S707). That is, when another personal computer user responds to a sent user list request command and receives another user computer request IP address and user name, the user receives another personal computer IP address and user name. Save it.

On the other hand, if there is no response to the user list request, it is determined whether a user list request command has been received by the personal computer which has transmitted the user list request command (S709).

When the user list request command is received, it is determined whether the printer information included in the received user list request command matches the printer information of the received user (S711). That is, it is determined whether the personal computer which has received the user list request command and the personal computer which has received the user list request command use the same network printer 200.

The received user list request command includes the printer information and the user name. Accordingly, printer information such as printer identification data received from a personal computer having a user list request command is analyzed and compared with printer information of the received personal computer to determine whether to use the same network printer 200.

When the printer information included in the received user list request command is compared with the printer information of the personal computer that received the command, and if the printer information matches each other, the user list request including the personal computer IP address and user name received the command is matched. The response command is transmitted (S713).

However, if there is no response to the user list request in step S709, and the user list request command is not received in the personal computer, and the user list request command is received in the personal computer in step S711, the user list request command is included in the received user list request command. If the printer information does not match the printer information of the received personal computer, the user list generation is terminated.

7A and 7B illustrate a process of transmitting and receiving a message between users in a network printer system according to the present invention.

FIG. 7A illustrates an operation of a user who transmits a message to another user using the chat service menu of the printer driver 134. FIG. 7B is a view for explaining a process in which a message transmitted from another user is received by the user using the chat service menu of the printer driver 134.

Referring to FIG. 7A, a user of a personal computer 100 connected to a network printer 200 may transmit a message to another personal computer user using a chat service menu of a printer driver 134 that provides a chat service.

The user of the personal computer 100 selects a user name to which a message is to be transmitted from a list of users displayed on the display device 120, inputs the content of the message to be transmitted in a field for inputting a message, and selects a message transmission button. Send it. In this case, the user name to which the message is to be sent may be selected in the user list of the user list by selecting the 'select all' menu, or may select a specific user. If the user selects the send message button after inputting the message content and selecting the user name, the message inputted to the personal computer IP address corresponding to the user name selected in the user list is transmitted.

Referring to FIG. 7B, when another user of a personal computer connected to the network printer 200 transmits a message using the chat service of the printer driver 134, the message content as shown in FIG. 7B is displayed on the display device 120. ), The user can check the contents of the message.

According to the present invention, a network image forming apparatus provides a notification function for sharing information among a plurality of user terminals in a network.

Accordingly, the plurality of users who operate the plurality of user terminals can be informed before use of the network image forming apparatus, information necessary for use of the network image forming apparatus, precaution information, and the like before the printing start step, thereby improving the use efficiency and convenience of the network image forming apparatus. have. As well as information on the use of the network image forming apparatus, as well as the notification function, it can be used for information exchange and notification to users on the network.

In addition, the network image forming apparatus provides a chat service function capable of transmitting a message between a plurality of user terminals in a network.

Accordingly, by providing information about the network image forming apparatus in real time to a specific user operating the user terminal, it is possible to improve the use efficiency and convenience of the network image forming apparatus.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the present invention is not limited to the specific embodiments of the present invention without departing from the spirit of the present invention as claimed in the claims. Anyone skilled in the art can make various modifications, as well as such modifications are within the scope of the claims.

1 is a schematic configuration diagram of a network system having a network printer as an example according to the present invention;

FIG. 2 is a schematic block diagram of a predetermined personal computer and a network printer in the network printer system shown in FIG.

3A to 3D illustrate a basic setting screen generated by a printer driver according to the present invention, and thus, a diagram illustrating a process of performing a notification function.

4 is a flowchart illustrating a process in which a notice board function is performed by a network printer system according to the present invention;

5 is a flowchart illustrating a process of installing a printer driver for a conversation service between users in a personal computer in the network printer system according to the present invention;

6 is a flowchart illustrating a process of generating a user list used for a conversation service between users in a network printer system according to the present invention; and

7A and 7B illustrate a process of transmitting and receiving a message between users in a network printer system according to the present invention.

 Explanation of symbols on the main parts of the drawings

100: personal computer 110: input device

120: display device 130: storage device

132: application unit 134: printer driver

140: ROM 150: RAM

160: input and output interface unit 170: PC control unit

200: network printer 210: OPE unit

212 input unit 214 display unit

220: interface unit 230: printer control unit

240: storage unit 250: printing unit

Claims (25)

A network image forming apparatus for printing print data transmitted from a plurality of user terminals connected on a network. An interface unit for transmitting and receiving to and from the user terminal; And And a storage unit storing sharing information transmitted from any one of the plurality of user terminals. The method of claim 1, And receiving an operation start command from any one of the plurality of user terminals, and transmitting the shared information stored in the storage unit to the user terminal that has transmitted the operation start command. The method of claim 1, And a controller configured to control the interface unit to transmit the shared information stored in the storage unit to a user terminal that has transmitted the operation start command when an operation start command is received from one of the plurality of user terminals. A network image forming apparatus. The method of claim 1, The sharing information, And at least one of information data input through the user terminal, identification data of the user terminal, and time data into which the information data is input. The method of claim 1, And data transmitted / received through the interface unit is at least one of the shared information, the print data, and an operation start command. In the operation control method of a network image forming apparatus for printing print data transmitted from a plurality of user terminals connected on a network, Storing sharing information transmitted from any one of the plurality of user terminals; Receiving an operation start command from any one of the plurality of user terminals; And And transmitting the stored shared information to a user terminal that has transmitted the operation start command. The method of claim 6, The sharing information, And at least one of information data input by the user terminal, identification data of the user terminal, and time data into which the information data is input. A network system comprising a plurality of user terminals and an image forming apparatus for printing print data transmitted from the plurality of user terminals. The plurality of user terminals transmitting sharing information on the network to the image forming apparatus; And And an image forming apparatus configured to store the sharing information transmitted from any one of the plurality of user terminals. And the image forming apparatus transmits the stored shared information to the user terminal that has transmitted the operation start command when an operation start command is transmitted from any one of the plurality of user terminals. The method of claim 8, The user terminal, A first interface unit for transmitting and receiving the shared information from the image forming apparatus; A setting screen generation unit generating a notification screen for displaying and recording the shared information; And And a first controller configured to control the setting screen generating unit to generate the notification screen corresponding to the sharing information when the sharing information is received. The method of claim 9, When the predetermined information data is recorded on the notification screen, And the first controller controls the first interface unit to transmit the information data, the identification data, and the time data to the image forming apparatus. The method of claim 8, The image forming apparatus, A second interface unit for transmitting and receiving the shared information from the user terminal; A storage unit for storing the shared information transmitted from the user terminal; And When the operation start command is received from any one of the plurality of user terminals through the second interface unit, the second interface unit controls the second interface unit to transmit the shared information stored in the storage unit to the user terminal that has transmitted the operation start command. And a second control unit. The method of claim 11, The sharing information, And at least one of information data recorded by the user terminal, identification data of the user terminal, and time data into which the information data is input. In the operation control method of a network system having a plurality of user terminals and an image forming apparatus for printing the print data transmitted from the plurality of user terminals, (a) transmitting sharing information on the network input to the user terminal to the image forming apparatus; And (b) the image forming apparatus, when the operation start command is transmitted from any one of the plurality of user terminals, transmitting the pre-stored shared information to the user terminal that has transmitted the operation start command. Operation control method of a network system. The method of claim 13, In step (a), Generating and displaying a notification screen for displaying and recording the shared information; Recording predetermined information data using the notification screen; Detecting identification data of the user terminal and time data in which the information data is recorded; And And transmitting the information data, the identification data, and the time data to the image forming apparatus. The method of claim 13, In step (b), Storing the shared information transmitted from any one of the plurality of user terminals; And when the operation start command is transmitted from one of the plurality of user terminals, transmitting the pre-stored shared information to the user terminal that has transmitted the operation start command. The method of claim 15, The sharing information, And at least one of information data recorded by the user terminal, identification data of the user terminal, and time data into which the information data is input. In the operation control method of a network system comprising a plurality of user terminals including a first terminal and a second terminal, and an image forming apparatus for printing the print data transmitted from the plurality of user terminals, (a) generating a user list of information on users of the user terminal; And (b) selecting a specific user from the generated user list and transmitting a message input to the first terminal to a second terminal used by the selected specific user; operation control of a network system Way. The method of claim 17, In step (a), Transmitting a command for requesting the user list including information on the image forming apparatus from the first terminal to the second terminal; Determining whether to respond to the command from the second terminal; And And storing information on the user of the second terminal in the first terminal when there is a response to the command. The method of claim 18, Determining whether a command for requesting a user list including information on an image forming apparatus is received from the first terminal when there is no response to the command; When the command for requesting the user list is received, it is determined whether the information about the image forming apparatus included in the command for requesting the user list and the information about the image forming apparatus used by the first terminal match. step; And And transmitting the information on the first terminal user to the user terminal that has transmitted the command for requesting the user list when the information on the image forming apparatus is matched. Way. The method of claim 19, And the information on the image forming apparatus is any one of identification data of the image forming apparatus and an IP address. The method of claim 17, And information on the users is at least one of a name of the users and an IP address of the user terminal. The method of claim 17, Step (b) is Detecting an IP address of a specific user from information on the user; And Transmitting the message to the detected IP address. A network system comprising a plurality of user terminals and an image forming apparatus for printing print data transmitted from the plurality of user terminals. And a plurality of user terminals for transmitting a message between users of the user terminal using information about the users of the user terminal. The method of claim 23, wherein The user terminal, A second interface unit for transmitting and receiving the message between the user terminals; A first setting screen generation unit generating a dialogue service screen between users for displaying and recording the message, and displaying information about the users; And A second controller configured to generate a user list using information about the users, and to control the first setting screen generation unit to generate the inter-user conversation service screen corresponding to the message when the message is received. Network system, characterized in that. The method of claim 23, wherein And wherein the information about the users is at least one of a name of the users and an IP address of the user terminal.