Patent Publication Number: US-9888137-B2

Title: System for displaying screen(s) on a remote terminal while using multiple peripheral devices

Description:
This application is based on Japanese patent application No. 2014-124520 filed on Jun. 17, 2014, the contents of which are hereby incorporated by reference. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a processing apparatus such as an image forming apparatus, a display method used in a terminal connected to the processing apparatus, and so on. 
     2. Description of the Related Art 
     Image forming apparatuses have attained widespread use which have a variety of functions such as copying, scanning, faxing, document managing, and image editing. Such image forming apparatuses are sometimes called “multifunction devices” or “Multi-Functional Peripherals (MFPs)”. 
     Such an image forming apparatus is usually provided with a touch-sensitive panel display. A wide variety of screens is displayed on the touch-sensitive panel display. The screens are used to operate the image forming apparatus. Technologies have been proposed with which such a screen is displayed in a portable terminal, e.g., a tablet computer and a smartphone, and the image forming apparatus performs processing in accordance with remote operation from the portable terminal. 
     One of the technologies is as follows. Control is made in such a manner that, if a distance between an information processing apparatus (image forming apparatus) and a mobile terminal (terminal) is smaller than a predetermined distance, then the mobile terminal enters into a cooperative panel mode which allows the mobile terminal to display a part which cannot be displayed in a display portion of the information processing apparatus. Further, control is made in such a manner that, if the distance between the information processing apparatus and the mobile terminal is equal to or greater than the predetermined distance, then the mobile terminal enters into a remote panel mode which allows the mobile terminal by itself to operate the information processing apparatus (Japanese Laid-open Patent Publication No. 2013-223137). 
     Another one of the technologies is as follows. A control device includes: a retrieval request receiving part for receiving a request to retrieve an operation screen that is registered in one of other image forming devices which are connected with an image forming device; a retrieval part for retrieving the operation screen matching with a retrieval condition; a display control part for displaying the retrieved operation screen on a display device provided for the image forming device; a receiving part for receiving an instruction to the one of the other image forming devices from a user via the operation screen of the one of the other image forming devices which is displayed on the display device; and a transmission part for transmitting the instruction, which is received from the user via the operation screen of the one of the other image forming devices, to the one of the other image forming devices (English Abstract of Japanese Laid-open Patent Publication No. 2012-203152). 
     One facility sometimes has a plurality of image forming apparatuses. In recent years, the image forming apparatuses and users thereof have been centrally managed by a server. This enables a user to use an image forming apparatus located close to him/her. 
     Further, terminals such as tablet computers and smartphones have come into widespread use. A user carries around such a terminal and use the terminal in various places of the facility. 
     SUMMARY 
     The present invention has been achieved in light of such a change in facility environment, and an object thereof is to perform remote operation by means of a terminal more easily than is conventionally possible in an environment where a plurality of processing apparatuses such as image forming apparatuses is installed. 
     A processing apparatus according to an aspect of the present invention is a processing apparatus having a function to perform specific processing based on a request from a terminal. The processing apparatus includes a connection portion configured to connect the processing apparatus to the terminal; and a processor configured to control the terminal to display a second screen including a part or a whole of a first screen, the first screen having been displayed in the terminal by another processing apparatus with the function before the processing apparatus connects to the terminal. 
     These and other characteristics and objects of the present invention will become more apparent by the following descriptions of preferred embodiments with reference to drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagram showing an example of the overall configuration of a LAN. 
         FIG. 2  is a diagram showing an example of the hardware configuration of an image forming apparatus. 
         FIG. 3  is a diagram showing an example of the hardware configuration of a terminal. 
         FIG. 4  is a diagram showing an example of the functional configuration of an image forming apparatus. 
         FIG. 5  is a diagram showing an example of the functional configuration of a terminal. 
         FIG. 6  is a diagram showing an example of connection historical data. 
         FIG. 7  is a diagram showing an example of transition of user movement and transition of remote access. 
         FIG. 8  is a diagram showing an example of a connection information table and transition thereof. 
         FIG. 9  is a diagram showing an example of a touch-sensitive panel display, an operating key panel, and a start screen. 
         FIGS. 10A-10C  are diagrams showing examples of a box management screen. 
         FIG. 11  is a diagram showing an example of a file list screen. 
         FIGS. 12A and 12B  are diagrams showing examples of a preview screen. 
         FIG. 13  is a flowchart depicting an example of the flow of the entire processing for a remote panel service. 
         FIG. 14  is a flowchart depicting an example of the flow of the entire processing for a remote panel service. 
         FIGS. 15A and 15B  are diagrams showing modified examples of a box management screen. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       FIG. 1  is a diagram showing an example of the overall configuration of a Local Area Network (LAN)  4 .  FIG. 2  is a diagram showing an example of the hardware configuration of an image forming apparatus  1 .  FIG. 3  is a diagram showing an example of the hardware configuration of a terminal  2 . 
     As shown in  FIG. 1 , the LAN  4  is configured of a plurality of the image forming apparatuses  1 , a plurality of the terminals  2 , a communication line  3 , and so on. 
     Hereinafter, the image forming apparatuses  1  may be described separately as an “image forming apparatus  1 A”, an “image forming apparatus  1 B”, an “image forming apparatus  1 C” . . . , and so on. Likewise, the terminals  2  may be described separately as a “terminal  2 A”, a “terminal  2 B”, . . . , and so on. 
     The image forming apparatus  1  is an apparatus into which functions such as copying, PC printing, faxing, scanning, and box function are combined. The image forming apparatus  1  is generally called a “multifunction device” or a “Multi-Functional Peripheral (MFP)”. 
     The PC printing function is to print an image onto paper based on image data sent by the terminal  2 . The PC printing function is sometimes called “network printing” or “network print”. 
     The box function is a function in which a storage area called a “box” or “personal box” is allocated to each user. The box function enables each user to save image data and the like to his/her storage area and to manage the same therein. The box may be provided for each group and shared by members of the group. The box corresponds to a “folder” or “directory” in a personal computer. 
     Referring to  FIG. 2 , the image forming apparatus  1  is configured of a Central Processing Unit (CPU)  10   a , a Random Access Memory (RAM)  10   b , a Read Only Memory (ROM)  10   c , a large-capacity storage  10   d , a touch-sensitive panel display  10   e , an operating key panel  10   f , a Network Interface Card (NIC)  10   g , a modem  10   h , a near field communication device  10   i , a scanner unit  10   j , a printing unit  10   k , and so on. 
     The touch-sensitive panel display  10   e  displays, for example, a screen for presenting messages to a user, a screen for allowing the user to input commands or information, a screen for showing the results of processing executed by the CPU  10   a , and so on. The touch-sensitive panel display  10   e  sends a signal indicating a touched location to the CPU  10   a.    
     The operating key panel  10   f  is a so-called hardware keyboard, and is provided with a numeric keypad, a start key, a stop key, and a function key. 
     The NIC  10   g  performs communication with other devices in accordance with a protocol such as Transmission Control Protocol/Internet Protocol (TCP/IP). 
     The modem  10   h  sends and receives image data with a facsimile terminal in accordance with a protocol such as G3. 
     The near field communication device  10   i  performs communication based on the standard for near field communication. In this embodiment, an example of the near field communication device  10   i  is a Bluetooth (registered trademark)-ready device. 
     The scanner unit  10   j  optically reads an image recorded on a sheet placed on a platen glass to generate image data thereof. 
     The printing unit  10   k  prints, onto paper, the image captured by the scanner unit  10   j  and an image received from other devices by the NIC  10   g , the modem  10   h , or the near field communication device  10   i.    
     The ROM  10   c  or the large-capacity storage  10   d  stores, therein, programs for implementing the foregoing functions including the copying function. The ROM  10   c  or the large-capacity storage  10   d  also stores, therein, a remote service program  10 P which enables the image forming apparatus  1  to provide a remote panel service to the terminal  2 . The remote panel service is to enable a touch-sensitive panel display of the terminal  2  to display the same screen as that displayed in the touch-sensitive panel display  10   e , and to enable a user to operate the image forming apparatus  1  from a remote location via the terminal  2 . 
     The programs are loaded into the RAM  10   b  as necessary and executed by the CPU  10   a . Examples of the large-capacity storage  10   d  are a hard disk drive or a Solid State Drive (SSD). 
     Referring back to  FIG. 1 , the terminal  2  is a client of the image forming apparatus  1 . The user may use the foregoing functions of the image forming apparatus  1  from a remote location. As described above, the user may use the touch-sensitive panel display of the terminal  2  in place of the touch-sensitive panel display  10   e.    
     Examples of the terminal  2  include a laptop computer, a smartphone, and a tablet computer. The following description takes an example in which the terminal  2  is a tablet computer. 
     Referring to  FIG. 3 , the terminal  2  is configured of a CPU  20   a , a RAM  20   b , a flash memory  20   c , a touch-sensitive panel display  20   d , an operation button group  20   e , a wireless LAN communication device  20   f , a near field communication device  20   g , a mobile phone communication device  20   h , a digital camera  20   i , and so on. 
     As with the touch-sensitive panel display  10   e  of the image forming apparatus  1 , the touch-sensitive panel display  20   d  displays a variety of screens, and detects a touched location to inform the CPU  20   a  of the touched location. 
     The operation button group  20   e  includes a button for returning to a start screen, a button for controlling sound volume, and a button for switching between ON and OFF of the power supply. 
     The wireless LAN communication device  20   f  performs communication based on the standard for wireless LAN, specifically, the standard for Institute of Electrical and Electronics Engineers (IEEE) 802.11. 
     The near field communication device  20   g  performs communication based on the same standard as that used in the near field communication device  10   i  of the image forming apparatus  1 . In this embodiment, therefore, the near field communication device  20   g  performs communication based on the standard for Bluetooth. 
     The mobile phone communication device  20   h  performs communication through a mobile phone network based on the standard for Code Division Multiple Access (CDMA) 2000, Wideband-CDMA (W-CDMA), or Long Term Evolution (LTE). 
     The digital camera  20   i  captures an image to generate image data thereof. The digital camera  20   i  is also capable of recording a moving image to generate image data of the moving image. 
     The flash memory  20   c  stores therein application programs for a document preparation application (word processing software, for example), a mailer, a web browser, and a scheduler. The flash memory  20   c  also stores a remote client program  20 P therein. The remote client program  20 P is a program which enables the terminal  2  to receive the remote panel service. 
     The programs are loaded into the RAM  20   b  as necessary and executed by the CPU  20   a.    
     Referring back to  FIG. 1 , the communication line  3  is a so-called LAN, and is configured of a hub  31 , a router  32 , a wireless base station  33 , and so on. 
     The router  32  serves to connect the LAN  4  to another network such as the Internet. The wireless base station  33  is a Base Station (BS) for wireless LAN. The wireless base station  33  performs communication with the wireless LAN communication device  20   f  of the terminal  2 . 
     The wireless base station  33  and each of the image forming apparatuses  1  are connected to the hub  31  via a twisted pair cable. The hub  31  is connected via the twisted pair cable to the router  32 . The communication line  3  may include a plurality of the hubs  31  and a plurality of the wireless base stations  33 . 
     The communication line  3  enables data to be sent/received between the image forming apparatuses  1 , the terminals  2 , and devices of another network (e.g., a so-called cloud computer). 
       FIG. 4  is a diagram showing an example of the functional configuration of the image forming apparatus  1 .  FIG. 5  is a diagram showing an example of the functional configuration of the terminal  2 . 
     The description goes on to functions implemented in the image forming apparatus  1  by the remote service program  10 P, and functions implemented in the terminal  2  by the remote client program  20 P with reference to  FIGS. 4, 5 , and so on. 
     The remote service program  10 P implements the functions of a connection notifying portion  101 , a disconnection notifying portion  102 , a connection information managing portion  103 , a connection historical data obtaining portion  121 , a previous screen data obtaining portion  122 , a new screen data generating portion  123 , a new screen data transmission portion  124 , an entity determination portion  125 , a target processing execution control portion  126 , a target processing execution instructing portion  127 , a requested processing execution control portion  128 , a previous screen data providing portion  129 , and so on, all of which are shown in  FIG. 4 . 
     The remote client program  20 P implements the functions of a destination determination portion  201 , a connection processing portion  202 , a connection history storing portion  203 , a connection history notifying portion  204 , a screen display processing portion  205 , an operation notifying portion  206 , and so on, all of which are shown in  FIG. 5 . 
     [Processing Related to Connection and Disconnection] 
       FIG. 6  shows an example of connection historical data  51 . 
     The image forming apparatus  1  and the terminal  2  are connected to each other with Bluetooth. Hereinafter, the individual portions of the terminal  2  are described by taking the terminal  2 A as an example. 
     The destination determination portion  201  of the terminal  2 A determines an image forming apparatus  1  to be connected to the subject terminal  2 A, namely, the other end of the connection, in the following manner. 
     When no image forming apparatus  1  is connected to the terminal  2 A, the destination determination portion  201  determines, from among the image forming apparatuses  1  detected by the near field communication device  20   g , the image forming apparatus  1  located closest to the terminal  2 A as the other end of the connection. Known methods may be used to detect the image forming apparatus  1  located closest to the terminal  2 A. 
     One of the known methods is as follows. The destination determination portion  201  checks the intensity of radio waves which are sent by each of the image forming apparatuses  1  and received by the near field communication device  20   g . The destination determination portion  201  determines that the image forming apparatus  1  located closest to the terminal  2 A is the image forming apparatus  1  sending radio waves having the highest intensity. The distance between the terminal  2 A and the image forming apparatus  1  may be measured based on the intensity of radio waves. 
     Another one of the known methods is as follows. The destination determination portion  201  measures the position of the subject terminal  2 A with a measurement system such as a Global Positioning System (GPS). Since the image forming apparatuses  1  are placed at predetermined installation sites, it is preferable that the terminal  2 A stores the positions of the image forming apparatuses  1  in advance. The destination determination portion  201  calculates a distance between the terminal  2 A and each of the image forming apparatuses  1  based both on the measured position of the subject terminal  2 A and the positions of the image forming apparatuses  1 . The destination determination portion  201  then detects that the image forming apparatus  1  located closest to the terminal  2 A is the image forming apparatus  1  having the shortest distance from the terminal  2 A. 
     Suppose that, after the terminal  2 A connects to an image forming apparatus  1 , the user moves to another place with the terminal  2 A. In such a case, the distance between the terminal  2 A and the image forming apparatus  1  may increase, and the distance between the terminal  2 A and another image forming apparatus  1  may decrease. For example, when the distance between the image forming apparatus  1 A and the terminal  2 A that has connected to the image forming apparatus  1 A is equal to or longer than a predetermined distance, the destination determination portion  201  newly detects an image forming apparatus  1  located closest to the terminal  2 A. The destination determination portion  201  then determines that the image forming apparatus  1  located closest to the terminal  2 A is a new other end of the connection. Alternatively, when a distance between the terminal  2 A and an image forming apparatus  1  other than the image forming apparatus  1 A is shorter than the distance between the terminal  2 A and the image forming apparatus  1 A, the destination determination portion  201  newly detects an image forming apparatus  1  located closest to the terminal  2 A. The destination determination portion  201  then determines that the image forming apparatus  1  located closest to the terminal  2 A is a new other end of the connection. 
     Another configuration is also possible in which the destination determination portion  201  displays, in the touch-sensitive panel display  20   d , a list of image forming apparatuses  1  with which the terminal  2 A can perform communication with Bluetooth, and determines an image forming apparatus  1  selected by the user to be the other end of the connection. 
     Every time the destination determination portion  201  determines the other end of the connection, the connection processing portion  202  controls the near field communication device  20   g  to connect the terminal  2 A to the image forming apparatus  1  which has been determined to be the other end of the connection. If a connection between the terminal  2 A and another image forming apparatus  1  has already been established, the connection therebetween is cancelled (broken) beforehand. 
     The connection history storing portion  203  stores therein the connection historical data  51  showing a history of connections between the subject terminal  2 A and the individual image forming apparatuses  1 . If the terminal  2 A has connected to the image forming apparatuses  1 A,  1 B, and  1 C in the stated order, and then, currently connects to the image forming apparatus  1 C, then the connection historical data  51  indicates a history of the connections as that shown in  FIG. 6 . 
     With the image forming apparatus  1 , when a connection with the terminal  2  is established with Bluetooth, the connection notifying portion  101  of  FIG. 4  sends connection notification data  52  indicative of the terminal  2  to all of the other image forming apparatuses  1 . Alternatively, the connection notifying portion  101  may send the connection notification data  52  only to an image forming apparatus  1  determined in advance. 
     When the connection with the terminal  2  with Bluetooth is cancelled (broken), the disconnection notifying portion  102  sends disconnection notification data  53  to all of the other image forming apparatuses  1 . 
     The connection information managing portion  103  has a connection information table  54  (see  FIG. 8 ). The connection information managing portion  103  updates the connection information table  54  to manage information related to connections between the image forming apparatuses  1  and the terminals  2 . 
     The connection information table  54  has, for each of the image forming apparatuses  1 , a record showing the other end of the connection (the currently-connected terminal  2 ). The connection information table  54  is updated in the following manner. 
     When receiving the connection notification data  52  from another image forming apparatus  1 , the connection information managing portion  103  updates a record of the aforementioned another image forming apparatus  1  to show, as the other end of the connection, a terminal  2  indicated in the connection notification data  52 . 
     When receiving the disconnection notification data  53  from another image forming apparatus  1 , the connection information managing portion  103  updates a record of the aforementioned another image forming apparatus  1  to show no devices as the other end of the connection. 
     When the subject image forming apparatus  1  connects to the terminal  2  through the near field communication device  10   i , the connection information managing portion  103  updates a record of the subject image forming apparatus  1  to show the terminal  2  as the other end of the connection. At this time, the connection notifying portion  101  sends connection notification data  52  to all of the other image forming apparatuses  1  as described above. 
     When the connection with the terminal  2  through the near field communication device  10   i  is cancelled, the connection information managing portion  103  updates the record of the subject image forming apparatus  1  to show no devices as the other end of connection. At this time, the disconnection notifying portion  102  sends disconnection notification data  53  to all of the other image forming apparatuses  1  as described above. 
     [Operation on Image Forming Apparatus  1  by Remote Panel Service] 
     After the connection between the image forming apparatus  1  and the terminal  2  is established, the individual portions of the image forming apparatus  1  and the individual portions of the terminal  2  provide the remote panel service in the following manner. Hereinafter, an example is provided in which the image forming apparatus  1 A and the terminal  2 A are connected to each other. 
     With the image forming apparatus  1 A, the connection historical data obtaining portion  121  obtains the connection historical data  51  from the terminal  2 A, for example, in the following manner. 
     The connection historical data obtaining portion  121  requests the connection historical data  51  from the terminal  2 A. 
     When the request from the image forming apparatus  1 A is received, the connection history notifying portion  204  of the terminal  2 A reads out the connection historical data  51  from the connection history storing portion  203  to send the connection historical data  51  to the image forming apparatus  1 A. 
     When the connection historical data obtaining portion  121  obtains the connection historical data  51 , the previous screen data obtaining portion  122  requests screen data  55  from another image forming apparatus  1  to which the terminal  2 A has been connected immediately before being connected to the image forming apparatus  1 A. Such another image forming apparatus  1  is indicated in the connection historical data  51 . 
     The screen data  55  and screen data on each screen (described later) may be described in a markup language. 
     The screen data  55  is data on a screen which the aforementioned another image forming apparatus  1  has caused the terminal  2 A to display. Hereinafter, such a screen is referred to as a “previous screen  61 ”. To be specific, the screen data  55  indicates screen identifying information on the previous screen  61 , an object included in the previous screen  61 , and an object identifier of the object. Examples of the object are a button, checkbox, tab, pull-down menu, and icon. 
     The screen identifying information is to identify a screen and is given to each screen. The screen identifying information includes an “MFP_ID” and a “screen ID”. For example, if the MFP_ID of the image forming apparatus  1 B is “MFP_B”, and if the screen ID of a box screen is “G001”, then the screen identifying information on the box screen of the image forming apparatus  1 B is “MFP_A-G001”. Screens having a common role have the same screen ID code as each other in all the image forming apparatuses  1 . 
     The object identifying information is to identify an object and is given to each object. The object identifying information includes an “MFP_ID”, a “screen ID”, and an “object_ID”. If the object_ID of a button corresponding to a box named box_ 201  of a box screen of the image forming apparatus  1 B is “J101”, then the object identifying information on the button is “MFP_B-G001-J001”. 
     The terminal  2  may be so configured to, after connecting to the image forming apparatus  1  with Bluetooth, send the connection historical data  51  without waiting for a request to come. 
     The new screen data generating portion  123  serves to generate screen data  56  on a new screen  62 . The new screen  62  has the same role as that of the previous screen  61 . Thus, which screen is to be used as the new screen  62  may be determined based on the screen identifying information indicated in the screen data  55 . The new screen  62  has a part of the objects of the previous screen  61 . In particular, the new screen  62  has an object which is not steady, namely, an object which is laid out appropriately depending on the situation. The steady object and the object not steady are determined in advance for each screen. The specific examples are discussed later. 
     In response to the screen data  56  generated by the new screen data generating portion  123 , the new screen data transmission portion  124  sends the screen data  56  to the terminal  2 A. 
     With the terminal  2 A, the screen display processing portion  205  receives the screen data  56  to display the new screen  62  on the touch-sensitive panel display  20   d  based on the screen data  56 . 
     The user performs operation such as touching the touch-sensitive panel display  20   d  while viewing the new screen  62 , so that his/her desired processing can be designated. 
     The operation notifying portion  206  sends, to the image forming apparatus  1 A, operation content data  57  indicating the details of the operation made by the user. 
     With the image forming apparatus  1 A, when receiving the operation content data  57  from the terminal  2 A, the entity determination portion  125  determines an entity which is to execute the target processing based on the operation content data  57 . The entity is defined in advance for each screen. The specific examples are discussed later. 
     The target processing execution control portion  126  executes the target processing when the entity determination portion  125  determines that the entity to execute the target processing based on the operation content data  57  is the subject image forming apparatus  1 A. 
     The target processing execution instructing portion  127  requests another image forming apparatus  1  to execute the target processing when the entity determination portion  125  determines that the entity to execute the target processing based on the operation content data  57  is the aforementioned another image forming apparatus  1 A. The target processing execution instructing portion  127  relays the result of the target processing and the like to the terminal  2 A if necessary. 
     The requested processing execution control portion  128  executes the target processing based on a request from another image forming apparatus  1 . 
     A specific example of the processing by the target processing execution control portion  126 , the target processing execution instructing portion  127 , and the requested processing execution control portion  128  is discussed later. 
     When another image forming apparatus  1  sends a request for the screen data  55 , the previous screen data providing portion  129  sends, to the aforementioned another image forming apparatus  1 , as the screen data  55 , image data on the screen which has been displayed in the terminal  2 A immediately before the receipt of the request. 
     [Example where Box Function is Used] 
       FIG. 7  is a diagram showing an example of transition of movement of a user  9  and transition of remote access.  FIG. 8  is a diagram showing an example of the connection information table  54  and transition thereof.  FIG. 9  is a diagram showing an example of the touch-sensitive panel display  10   e , the operating key panel  10   f , and a start screen  6 A.  FIGS. 10A-10C  are diagrams showing an example of box management screens  6 B 1 ,  6 B 2 , and  6 B 3 .  FIG. 11  is a diagram showing an example of a file list screen  6 C. 
     The description goes on to an example of processing by the individual devices by taking an example where the user  9  causes the terminal  2 A to access to the image forming apparatuses  1 A,  1 B, and  1 C, in the stated order, from a remote location as shown in  FIG. 7 . 
     The user  9  moves to close to the image forming apparatus  1 A, and turns on the near field communication device  20   g  of the terminal  2 A. Since the connection historical data  51  on the terminal  2 A and the connection information table  54  of each of the image forming apparatuses  1  is reset, nothing is indicated therein at this time. 
     The destination determination portion  201  (see  FIG. 5 ) of the terminal  2 A determines that the other end of the connection is the image forming apparatus  1 A, and the connection processing portion  202  performs processing for connecting to the image forming apparatus  1 A. This enables the user  9  to control the image forming apparatus  1 A from a remote location by operating the terminal  2 A. The connection history storing portion  203  writes, into the connection historical data  51 , the identifier of the image forming apparatus  1 A and a time at which the connection to the image forming apparatus  1 A is established. 
     With the image forming apparatus  1 A, the connection notifying portion  101  (see  FIG. 4 ) sends, to the other image forming apparatuses  1 , data indicative of the terminal  2 A as the connection notification data  52 . The connection information managing portion  103  writes an identifier of the terminal  2 A to a record, of the connection information table  54 , corresponding to the image forming apparatus  1 A. This updates the connection information table  54  as shown in  FIG. 8  from (A) to (B). 
     Likewise, in each of the image forming apparatuses  1  except the image forming apparatus  1 A, the connection information managing portion  103  receives the connection notification data  52 , and writes the identifier of the terminal  2 A to the record, of the connection information table  54 , corresponding to the image forming apparatus  1 A. 
     With the image forming apparatus  1 A, the connection historical data obtaining portion  121  obtains the connection historical data  51  from the terminal  2 A. 
     In the meantime, when the user  9  uses any one of the image forming apparatuses  1  by directly operating the touch-sensitive panel display  10   e  of the subject image forming apparatus  1 , the start screen  6 A first appears in the touch-sensitive panel display  10   e  as shown in  FIG. 9 . 
     In the case where the user  9  uses the terminal  2 A to control the first image forming apparatus  1  (the image forming apparatus  1 A, in this example) from a remote location, the image forming apparatus  1 A first sends image data on the start screen  6 A to the terminal  2 A. Whether or not the image forming apparatus  1 A is the first (top) image forming apparatus  1  can be determined based on the connection historical data  51 . 
     With the terminal  2 A, when receiving the screen data, the screen display processing portion  205  displays the start screen  6 A on the touch-sensitive panel display  20   d.    
     The start screen  6 A has buttons corresponding to the major functions of the image forming apparatus  1 A. The user  9  presses a button corresponding to the box function in the start screen  6 A. This designates, as the target processing, processing for displaying a screen for the box function in the terminal  2 A. 
     The operation notifying portion  206  sends, as the operation content data  57 , data indicating that the button corresponding to the box function has been pressed to the image forming apparatus  1 A. 
     With the image forming apparatus  1 A, when receiving the operation content data  57 , the entity determination portion  125  determines an entity which is to execute the target processing based on the operation content data  57 . It is determined, in advance, that when a button is pressed in the start screen  6 A, a screen for a function corresponding to the button is displayed in the other end of the connection. The entity determination portion  125  determines that the entity which is to execute the target processing is the image forming apparatus  1 A. 
     When it is determined that the entity which is to execute the target processing is the image forming apparatus  1 A, the target processing execution control portion  126  so controls the portions that the target processing is executed in accordance with the operation content data  57 . In this example, the target processing execution control portion  126  controls, for example, the near field communication device  10   i  to execute processing of sending image data on screen for the box function to the terminal  2 A. 
     With the terminal  2 A, the screen display processing portion  205  displays the box management screen  6 B 1  as shown in  FIG. 10A  on the touch-sensitive panel display  20   d.    
     The box management screen  6 B 1  has buttons for boxes which the user  9  is allowed to use among the boxes provided in the image forming apparatus  1 A. The buttons are objects placed appropriately depending on the situation. The box management screen  6 B 1  also has buttons for switching to another screen, tabs for narrowing down buttons of the box, objects such as icons showing the residual toner. The objects are steady objects in the box management screen  6 B 1 . 
     The user  9  presses a button corresponding to a box having files that are to be checked. This designates, as the target processing, processing of displaying a list of files in the terminal  2 A. The operation notifying portion  206  sends, as the operation content data  57 , data which indicates that the button has been pressed to the image forming apparatus  1 A. 
     With the image forming apparatus  1 A, the entity determination portion  125  receives the operation content data  57 , and determines an entity which is to execute the processing based on the operation content data  57 . 
     If it is determined that the entity which is to execute the processing is the subject image forming apparatus  1 A, then the target processing execution control portion  126  so controls the portions that the processing is executed in accordance with the operation content data  57 . For example, when a button of “MFP_A BOX_ 101 ” is pressed, the target processing execution control portion  126  searches for files saved to a box of “BOX_ 101 ” provided in the image forming apparatus  1 A. The target processing execution control portion  126  controls the portions in such a manner that the file list screen  6 C showing a list of the files found out by the search is displayed in the terminal  2 A as shown in  FIG. 11 . With the terminal  2 A, in response to the file list screen  6 C closed, the box management screen  6 B 1  appears again. 
     The user  9  moves away from the image forming apparatus  1 A with the box management screen  6 B 1  appearing in the terminal  2 A, and moves to close to the image forming apparatus  1 B. 
     With the terminal  2 A, the connection processing portion  202  performs processing for disconnecting the terminal  2 A from the image forming apparatus  1 A and connecting the terminal  2 A to the image forming apparatus  1 B. This enables the user  9  to control the image forming apparatus  1 B from a remote location by operating the terminal  2 A. The connection history storing portion  203  writes, into the connection historical data  51 , the identifier of the image forming apparatus  1 B and a time at which the connection to the image forming apparatus  1 B is established. 
     With the image forming apparatus  1 A, after the connection to the terminal  2 A is cancelled, the disconnection notifying portion  102  sends the disconnection notification data  53  to the other image forming apparatuses  1 . The connection information managing portion  103  deletes the identifier of the terminal  2 A from the record, of the connection information table  54 , corresponding to the image forming apparatus  1 A. 
     In each of the image forming apparatuses  1  except the image forming apparatus  1 A, the connection information managing portion  103  receives the disconnection notification data  53 , and deletes the identifier of the terminal  2 A from the record, of the connection information table  54 , corresponding to the image forming apparatus  1 A. 
     With the image forming apparatus  1 B, the connection notifying portion  101  sends, as the connection notification data  52 , data indicative of the terminal  2 A to the other image forming apparatuses  1 . The connection information managing portion  103  writes the identifier of the terminal  2 A to a record, of the connection information table  54 , corresponding to the image forming apparatus  1 B. This updates the connection information table  54  as shown in (C) of  FIG. 8 . 
     Likewise, in each of the image forming apparatuses  1  except the image forming apparatus  1 B, the connection information managing portion  103  receives the connection notification data  52 , and writes the identifier of the terminal  2 A to the record, of the connection information table  54 , corresponding to the image forming apparatus  1 B. 
     With the image forming apparatus  1 B, the connection historical data obtaining portion  121  obtains the connection historical data  51  from the terminal  2 A. The connection historical data  51  indicates that the terminal  2 A has been connected to the image forming apparatus  1 A immediately before connecting to the image forming apparatus  1 B. 
     The previous screen data obtaining portion  122  requests, from the image forming apparatus  1 A, data on the previous screen  61  (screen which has been displayed in the terminal  2 A before the connection with the image forming apparatus  1 B is established). 
     In response to the request, the previous screen data providing portion  129  of the image forming apparatus  1 A sends, as the screen data  55 , screen data on the box management screen  6 B 1  to the image forming apparatus  1 B. 
     With the image forming apparatus  1 B, the new screen data generating portion  123  generates screen data for displaying the box management screen  6 B 2 . 
     As shown in  FIG. 10B , the box management screen  6 B 2  has buttons for boxes which the user  9  is allowed to use among the boxes provided in the image forming apparatus  1 B. The box management screen  6 B 2  also has buttons for the boxes provided in the box management screen  6 B 1  of  FIG. 10A . The buttons may be laid out based on the screen data  55  received from the image forming apparatus  1 A. 
     When the new screen data generating portion  123  generates screen data, the new screen data transmission portion  124  sends the same to the terminal  2 A as the screen data  56 . 
     Upon the receipt of the screen data  56 , the screen display processing portion  205  of the terminal  2 A displays, as the new screen  62 , the box management screen  6 B 2  in the touch-sensitive panel display  20   d.    
     When the user  9  presses any one of the buttons for boxes of the box management screen  6 B 2 , the operation notifying portion  206  sends, as the operation content data  57 , data showing that the button has been pressed to the image forming apparatus  1 B. 
     With the image forming apparatus  1 B, the entity determination portion  125  receives the operation content data  57 , and determines an entity which is to execute the target processing based on the operation content data  57 . When a button for a box is pressed, the entity determination portion  125  determines that the entity which is to execute the target processing is the subject image forming apparatus  1 B. 
     If it is determined that the entity which is to execute the processing is the subject image forming apparatus  1 B, then the target processing execution control portion  126  so controls the portions that the processing is executed in accordance with the operation content data  57 . 
     The processing for the case where the user  9  presses a button corresponding to a box managed by the subject image forming apparatus  1 B is discussed above. 
     On the other hand, if the user  9  presses a button (button for “MFP_A BOX_ 101 ”, for example) corresponding to a box managed by another image forming apparatus  1 , e.g., by the image forming apparatus  1 A, then the target processing execution control portion  126  obtains a list of files saved to the box from the image forming apparatus  1 A. The target processing execution control portion  126  so controls the portions that the file list screen  6 C showing the list appears in the terminal  2 A. 
     The user  9  moves away from the image forming apparatus  1 B with the box management screen  6 B 2  appearing in the terminal  2 A, and moves to close to the image forming apparatus  1 C. 
     In response to the movement of the user  9 , each of the image forming apparatus  1 B and the terminal  2 A performs processing for terminating the connection therebetween and the related processing as discussed above. Further, each of the image forming apparatus  1 C and the terminal  2 A performs processing for establishing the connection therebetween and the related processing as discussed above. This enables the user  9  to control the image forming apparatus  1 C from a remote location by operating the terminal  2 A. Then, the connection information table  54  of each of the image forming apparatuses  1  is updated as shown in (D) of  FIG. 8 . 
     Processing for displaying a screen is also performed as discussed above. The processing causes the box management screen  6 B 3  as shown in  FIG. 10C  to appear in the terminal  2 A as a screen for the box function. The box management screen  6 B 3  has buttons for boxes which the user  9  is allowed to use among the boxes provided in the image forming apparatus  1 C. The box management screen  6 B 3  also has buttons for the boxes provided in the box management screen  6 B 2  of  FIG. 10B . Processing to be performed in response to a button pressed is also performed as discussed above. 
     In the meantime, the file list screen  6 C of  FIG. 11  shows a list of files saved to the box named “BOX_ 101 ” managed by the image forming apparatus  1 A as described above. The user selects any one of the files to enter a print command. This designates, as the target processing, processing for printing an image onto paper by using the selected file. The operation notifying portion  206  sends, as the operation content data  57 , data indicative of the file and the command to the image forming apparatus  1  currently connected to the terminal  2 A. 
     The entity determination portion  125  of the currently-connected image forming apparatus  1  determines that the entity to execute the target processing is the subject image forming apparatus  1 . The target processing execution control portion  126  then executes the target processing. If the currently-connected image forming apparatus  1  is the image forming apparatus  1 A, then the file can be obtained from a box managed by the image forming apparatus  1 A. On the other hand, if the currently-connected image forming apparatus  1  is not the image forming apparatus  1 A, e.g., if it is the image forming apparatus  1 B, then the file is obtained from the image forming apparatus  1 B. 
     In the case where, when the user  9  enters a delete command instead of the print command, the target processing is to delete the file. In such a case, the entity determination portion  125  determines that the entity to execute the target processing is the image forming apparatus  1  managing a box where the file is saved. 
     With the image forming apparatus  1 A, therefore, the entity determination portion  125  determines that the entity to execute the target processing is the image forming apparatus  1 A. The target processing execution control portion  126  so controls, for example, the large-capacity storage  10   d  of the subject image forming apparatus  1 A as to delete the file. 
     With another image forming apparatus  1  (the image forming apparatus  1 B, for example), the entity determination portion  125  determines that the entity to execute the target processing is the image forming apparatus  1 A. The target processing execution instructing portion  127  instructs the image forming apparatus  1 A to delete the file. With the image forming apparatus  1 A, the requested processing execution control portion  128  controls the large-capacity storage  10   d  of the subject image forming apparatus  1 A in such a manner that the file is deleted based on instructions from the image forming apparatus  1 B. 
     [Example where Scanning Function is Used] 
       FIGS. 12A and 12B  are diagrams showing an example of preview screens  6 D and  6 D 2 . 
     The description goes on to an example of processing by the individual devices by taking an example where the user  9  causes the terminal  2 A to remotely access to the image forming apparatuses  1 A and  1 B in the stated order to use the scanning function. Description of points common to the case where the box function is used shall be omitted. 
     The user  9  moves to close to the image forming apparatus  1 A, and turns on the near field communication device  20   g  of the terminal  2 A. In response to the operation, as with the example of using the box function, a connection is established between the image forming apparatus  1 A and the terminal  2 A, so that processing for updating the connection historical data  51  and the connection information table  54 , and another processing are executed. 
     The user  9  places paper onto the scanner unit  10   j , and causes the scanner unit  10   j  to optically read the paper. Thereby, image data on an image depicted on the paper is generated. 
     According to conventional technologies, the image captured by the scanner unit  10   j  was displayed as the preview screen  6 D as that shown in  FIG. 12A  on the touch-sensitive panel display  10   e . Since the terminal  2 A accesses to the image forming apparatus  1 A from a remote location, the preview screen  6 D appears in the touch-sensitive panel display  20   d  of the terminal  2 A not in the touch-sensitive panel display  10   e.    
     In general, when images are read out from a predetermined number of paper sheets or more, all the images cannot be laid out simultaneously on the preview screen  6 D. In such a case, the preview screen  6 D is so displayed that the images to be laid out change, as if pages are turned over, in response to a predetermined button pressed. 
     After the scanning by the scanner unit  10   j , the user  9  moves away from the image forming apparatus  1 A with the preview screen  6 D appearing in the terminal  2 A, and moves to close to the image forming apparatus  1 B. 
     In response to the movement of the user  9 , a connection is established between the terminal  2 A and the image forming apparatus  1 B, which enables the user  9  to control the image forming apparatus  1 B from a remote location by operating the terminal  2 A. 
     When obtaining the screen data  55  from the image forming apparatus  1 A, the image forming apparatus  1 B generates a preview screen  6 D 2  which corresponds to the edited preview screen  6 D, and sends, as the screen data  56 , screen data on the preview screen  6 D 2  to the terminal  2 A. The terminal  2 A displays the preview screen  6 D 2 . The preview screen  6 D 2  may be displayed in the entirety of the touch-sensitive panel display  10   e . Alternatively, the preview screen  6 D 2  may be displayed above the start screen  6 A of the image forming apparatus  1 B as shown in  FIG. 12B . 
     This enables the user  9  to check a scanned image continuously even after he/she moves away from the image forming apparatus  1 A and the connection between the terminal  2 A and the image forming apparatus  1 A is thereby terminated. 
     Together with the screen data  55 , the image forming apparatus  1 B may obtain, from the image forming apparatus  1 A, data indicating the last status of the preview screen  6 D while the image forming apparatus  1 A and the terminal  2  were connected to each other. Based on the data, the preview screen  6 D 2  may be displayed to indicate the last status in the terminal  2 A. 
     For example, when images of pages 2-4 are laid out in the preview screen  6 D at the end, the image forming apparatus  1 B displays the preview screen  6 D 2  in the terminal  2 A with the images of pages 2-4 displayed. Alternatively, when an image on the third sheet is enlarged at the end, the image forming apparatus  1 B displays the preview screen  6 D 2  in the terminal  2 A with the image of the third sheet enlarged. 
     When a “print execute” button is pressed on the preview screen  6 D 2 , the image forming apparatus  1 B obtains image data on the image from the image forming apparatus  1 A to cause the printing unit  10   k  to print the image onto paper. When operation for rearranging the pages is performed, the image forming apparatus  1 B informs the image forming apparatus  1 A of the operation content. The image forming apparatus  1 A then updates the image data in such a manner that the pages are rearranged accordingly. 
       FIGS. 13 and 14  are flowcharts depicting an example of the flow of the entire processing for the remote panel service. 
     The description goes on to the flow of the entire processing by the image forming apparatus  1  for a case where the remote panel service is provided with reference to the flowcharts of  FIGS. 13 and 14 . 
     While providing the remote panel service, the image forming apparatus  1  performs, in response to the occurrence of an event, processing in accordance with the event. The image forming apparatus  1  performs the processing as shown in  FIGS. 13 and 14 . Hereinafter, the flow of the entire processing is described by taking an example where the image forming apparatus  1 B provides the terminal  2 A with the remote panel service. 
     When a connection with the terminal  2 A is established with Bluetooth (YES in Step # 11  of  FIG. 13 ), the image forming apparatus  1 B updates the connection information table  54  (see  FIG. 8 ) in such a manner that the image forming apparatus  1 B and the terminal  2 A are associated with each other (Step # 12 ), and sends the connection notification data  52  to the other image forming apparatuses  1  (Step # 13 ). 
     If the terminal  2 A did not connect to another image forming apparatus  1  immediately before the current connection, in other words, if the current connection is the first connection for the terminal  2 A (YES in Step # 14 ), then the image forming apparatus  1 B causes the terminal  2 A to display a default screen, e.g., the start screen  6 A (see  FIG. 9 ) (Step # 15 ). On the other hand, if the terminal  2 A connected to another image forming apparatus  1  immediately before the current connection (NO in Step # 14 ), then the image forming apparatus  1 B obtains, from the aforementioned another image forming apparatus  1 , data on a screen (screen data  55 ) that the aforementioned another image forming apparatus  1  caused the terminal  2 A to display (Step # 16 ). The image forming apparatus  1 B generates screen data  56  based on the data (Step # 17 ), and sends the screen data  56  to the terminal  2 A (Step # 18 ). In this way, the screen as that shown in  FIG. 10B  or  FIG. 10C  appears in the terminal  2 A. 
     Alternatively, if the connection with the terminal  2 A is cancelled (YES in Step # 19 ), then the image forming apparatus  1 B updates the connection information table  54  in such a manner that the association between the image forming apparatus  1 B and the terminal  2 A is cancelled (Step # 20 ), and sends the disconnection notification data  53  to the other image forming apparatuses  1  (Step # 21 ). 
     Yet alternatively, if receiving the connection notification data  52  from another image forming apparatus  1  (YES in Step # 22 ), then the image forming apparatus  1 B updates the connection information table  54  based on the connection notification data  52  in such a manner that the aforementioned another image forming apparatus  1  and the terminal  2  are associated with each other (Step # 23 ). 
     Yet alternatively, if receiving the disconnection notification data  53  from another image forming apparatus  1  (YES in Step # 24  of  FIG. 14 ), then the image forming apparatus  1 B updates the connection information table  54  based on the disconnection notification data  53  in such a manner that the association between the aforementioned another image forming apparatus  1  and the terminal  2  is cancelled (Step # 25 ). 
     Yet alternatively, if receiving the operation content data  57  from the terminal  2 A (YES in Step # 26 ), then the image forming apparatus  1 B determines entity to execute the target processing (Step # 27 ). 
     If determining that the subject image forming apparatus  1 B is to execute the target processing (YES in Step # 28 ), then the image forming apparatus  1 B obtains data from another image forming apparatus  1  if necessary (Step # 29 ), and executes the target processing based on the operation content data  57  (Step # 30 ). On the other hand, if determining the aforementioned another image forming apparatus  1  is to execute the target processing (NO in Step # 28 ), then the image forming apparatus  1 B instructs the aforementioned another image forming apparatus  1  to execute the target processing based on the operation content data  57  (Step # 31 ). 
     Yet alternatively, if another image forming apparatus  1  receives a request for data (YES in Step # 32 ), then the image forming apparatus  1 B sends the requested data to the aforementioned another image forming apparatus  1  (Step # 33 ). 
     Yet alternatively, if being instructed to execute the target processing by another image forming apparatus  1  (YES in Step # 34 ), then the image forming apparatus  1 B executes the target processing (Step # 35 ). 
     While the remote panel service is provided (YES in Step # 36 ), the image forming apparatus  1 B performs the processing from Step # 11 -Step # 35  appropriately. 
     According to this embodiment, when the other end of the connection of the terminal  2  changes from a first image forming apparatus  1  to a second image forming apparatus  1 , a screen which the first image forming apparatus  1  caused the terminal  2  to display is displayed in the terminal  2  by the second image forming apparatus  1 . This enables the user to continue operation without any interruption. According to this embodiment, it is possible to operate, in an environment where a plurality of processing apparatuses such as image forming apparatuses  1  is provided, an image forming apparatus  1  from a remote location via the terminal  2  more easily than with conventionally possible. 
     In this embodiment, when the image forming apparatus  1  establishes a connection with the terminal  2 , the image forming apparatus  1  obtains the connection historical data  51  from the terminal  2  to detect another image forming apparatus  1  which connected to the terminal  2  immediately before the current connection. However, another method may be used for the detection. For example, a database may be used to manage a history of connections between devices of the LAN  4 , and such a determination may be made based on the database. The database may be provided in each of the image forming apparatuses  1 , and be updated in accordance with the connection notification data  52  or the disconnection notification data  53 . The database may be implemented by recording a transition of the connection information table  54  in the form of log. Alternatively, the LAN  4  may be configured to include a server, and the server may perform the management processing. Yet alternatively, a screen that was displayed at the end when a connection was established between the terminal  2  and the image forming apparatus  1  may be registered in the database. 
     In this embodiment, when the image forming apparatus  1  is disconnected from the terminal  2 , and then, receives a request for screen data from another image forming apparatus  1 , the image forming apparatus  1  responses to the request to send, as the screen data  55 , data described in a markup language. However, another configuration is also possible. 
     For example, the image forming apparatus  1 A may send, as the screen data  55  on the box management screen  6 B 1  (see  FIG. 10A ), data indicative of names and management sources of boxes shown in the form of button to the image forming apparatus  1 B. Alternatively, the image forming apparatus  1 A may send, as the screen data  55 , image data on each page of the preview screen  6 D (image data such as Portable Document Format (PDF) or Tagged Image File Format (TIFF)). In other words, the image forming apparatus  1 A sends, among the objects constituting a screen, data on an object laid out appropriately depending on the situation. 
     The image forming apparatus  1 B preferably generates screen data on the box management screen  6 B 2  or the preview screen  6 D 2  based on such screen data to send the screen data to the terminal  2  as the screen data  56 . 
     If the other end of the connection changes from, for example, the image forming apparatus  1 A to the image forming apparatus  1 B while the file list screen  6 C (see  FIG. 11 ) appears in the terminal  2 , the image forming apparatus  1 B preferably causes the terminal  2  to display the file list screen  6 C. If a file saved to a box managed by the image forming apparatus  1 A is selected in the file list screen  6 C, and if a print command is entered, then the image forming apparatus  1 B preferably receives the file from the image forming apparatus  1 A to carry out printing. Alternatively, if a delete command is entered, then the image forming apparatus  1 B preferably instructs the image forming apparatus  1 A to delete the file. 
     The image forming apparatus  1  may distinguish between an object corresponding to a resource of another image forming apparatus  1  and an object corresponding to a resource of the subject image forming apparatus  1 . For example, the image forming apparatus  1  and the aforementioned another image forming apparatus  1  may use different colors for the objects. Alternatively, an object corresponding to a resource of the aforementioned another image forming apparatus  1  may be displayed in the form of shortcut button. If the button is pressed, a screen only for the resource of the aforementioned another image forming apparatus  1  may be displayed. 
       FIGS. 15A and 15B  are diagrams showing a modified example of a box management screen. The image forming apparatus  1 B causes the terminal  2  to display, for example, a box management screen  6 B 2 ′ as shown in  FIG. 15A . The box management screen  6 B 2 ′ has buttons for boxes managed by the image forming apparatus  1 B and a shortcut button. When the shortcut button is selected, the image forming apparatus  1 B causes the terminal  2  to display a box management screen  6 B 1 ′ shown in  FIG. 15B . The box management screen  6 B 1 ′ has buttons for boxes managed by the image forming apparatus  1 A and a button to return to the box management screen  6 B 2 ′. 
     In this embodiment, the image forming apparatus  1  prints an image onto paper based on a file selected by the user, or deletes the file. The image forming apparatus  1  may perform another processing. For example, if the file corresponds to image data on a color image, the image forming apparatus  1  may convert the image data into image data on a monochrome image. Alternatively, the image forming apparatus  1  may transfer the image data to another image forming apparatus  1 . 
     In the foregoing embodiment, the processing target is a file saved to a box. The present invention is also applicable to the case where the processing target is a file saved to a so-called cloud server. 
     As discussed above, when the other end of the connection of the terminal  2  changes from the image forming apparatus  1 A to the image forming apparatus  1 B, the image forming apparatus  1 A provides the image forming apparatus  1 B with the screen data  55  on the previous screen  61 . Suppose that, for example, the previous screen  61  has buttons for files saved to the cloud server. In such a case, the image forming apparatus  1 A provides, as the screen data  55 , data indicative of file names and Uniform Resource Locators (URLs) of the files. The image forming apparatus  1 B generates a new screen  62  based on the screen data  55  to cause the terminal  2  to display the new screen  62 . When any one of the files is selected, the selected file is downloaded based on the URL indicated in the screen data  55 , and processing requested by the user (e.g., printing) is executed. 
     In the foregoing embodiment, the case is described in which the image forming apparatus  1  and the terminal  2  are connected to each other with Bluetooth. The present invention is also applicable to the case where the image forming apparatus  1  and the terminal  2  are connected to each other via the communication line  3 . 
     It is to be understood that the configurations of the LAN  4 , the image forming apparatus  1 , the terminal  2 , the constituent elements thereof, the content and order of the processing, the configuration of the screens, and the like can be appropriately modified without departing from the spirit of the present invention. 
     While example embodiments of the present invention have been shown and described, it will be understood that the present invention is not limited thereto, and that various changes and modifications may be made by those skilled in the art without departing from the scope of the invention as set forth in the appended claims and their equivalents.