Abstract:
An image forming apparatus, which includes: a printing data reception section that receives printing data through a communication section; a printing data storage section that stores the printing data and authentication information added to the printing data in association with each other; a printing section that prints the printing data on a printing medium; an information reception section that receives information; a matching section that matches the information with the authentication information; a retrieval section that retrieves the printing data processable based on matched first information; a presentation section that provides a list of the retrieved printing data; and a permission section that, when, while the list of printing data is being provided, the reception section receives an instruction to print the printing data and second information, and the instructed printing data is included in the printing data processable based on the second information, permits printing the printing data.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is based on and claims priority under 35 USC 119 from Japanese Patent Application No. 2007-170404 filed on Jun. 28, 2007. 
     BACKGROUND 
     Technical Field 
     The present invention relates to an image forming apparatus, an image forming method and a recording medium storing a printing control program. 
     SUMMARY 
     An aspect of the present invention provides an image forming apparatus, which includes: a printing data reception section that receives printing data through a communication section; a printing data storage section that stores the printing data received by the printing data reception section and authentication information added to the printing data in association with each other; a printing section that prints the printing data on a printing medium; an information reception section that receives information, a matching section that matches the information received by the information reception section with the authentication information added to the printing data; a retrieval section that retrieves from the printing data storage section the printing data processable on the basis of first information matched by the matching section; a presentation section that provides a list of the printing data retrieved by the retrieval section; and a permission section that, in a case where, while the list of printing data is being provided by the presentation section, the reception section receives an instruction to print the printing data on the printing medium and second information, and the instructed printing data is included in the printing data processable on the basis of the second information matched by the matching section, permits printing of the instructed printing data on the printing medium. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Exemplary embodiments of the present invention will be described in detail based on the following figures, wherein: 
         FIG. 1  is a diagram for explaining an outline of the exemplary embodiment of the present invention. 
         FIG. 2  is a block diagram showing one example of a functional configuration of an image forming apparatus: 
         FIG. 3  is a diagram illustrating a functional operation of the image forming apparatus when a first authentication information is inputted; 
         FIG. 4  is a diagram showing one example of a confidential printing list; 
         FIG. 5  is a diagram showing one example of the confidential printing list in the highlighted state; 
         FIG. 6  is a diagram for explaining the functional operation of the image forming apparatus when a second authentication information is inputted; 
         FIG. 7  is a flowchart illustrating one example of a flow of processing which is carried out by the image forming apparatus; and 
         FIG. 8  is a flowchart illustrating one example of the flow of processing which is carried out by the image forming apparatus in a case where a configuration in which the first authentication information and the second authentication information are compared with each other is applied. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinbelow, embodiments of the image forming apparatus, the image forming method and the recording medium storing the printing control program pertaining to the exemplary embodiment of the present invention will be described in detail with reference to the attached drawings. 
       FIG. 1  is a diagram for explaining the outline of the exemplary embodiment of the present invention. 
     As shown in  FIG. 1 , an image forming apparatus  1  pertaining to the exemplary embodiment of the present invention, and at least one information processing apparatus  2  are connected to one another through a network  3 . 
     Examples of the image forming apparatus  1  include a printer, a copying machine, and others which have an image forming function for forming a printing image on a printing medium (hereinafter to be referred to as a sheet of paper). The image forming apparatus  1  carries out a process (such as a printing process) for forming a printing image generated on a printing request (hereinafter to be referred to as printing data) in the format of the printer control code received from the information processing apparatus  2  through the network  3  on the sheet of paper. The image forming apparatus  1  temporarily stores printing data to which authentication information, such as a user ID (which may be an identifier which can be used by plural persons, such as a group ID), a password, or the like, is added, and when the pertinent authentication information is received, carries out printing processing of the pertinent printing data. Such printing processing is hereinafter to be referred to as confidential printing. The authentication information represents the authority for making processing operation on an object document, for example. 
     Examples of the information processing apparatus  2  include a personal computer, a mobile terminal, and the like, which are directly used by the user. The information processing apparatus  2  utilizes the printer driver function incorporated in the information processing apparatus  2  for sending printing data which requests printing of the data, such as a file, an image, or the like, prepared by using an application program, or the like, to the image forming apparatus  1 . The information processing apparatus  2  adds authentication information to the printing data when sending the printing data for performing confidential printing to the image forming apparatus  1 . 
       FIG. 2  is a block diagram showing one example of the functional configuration of the image forming apparatus  1 . 
     As shown in  FIG. 2 , the image forming apparatus  1  includes a printing data reception section  4 , a data storage section  5 , a display  6 , an input section  7 , an image forming section  8 , a main controller  9 , and a confidential printing control unit  10 . 
     The printing data reception section  4  receives the printing data from the information processing apparatus  2  through the network  3 . 
     When the printing data reception section  4  receives the printing data to which the authentication information is added, the data storage section  5  stores the printing data in the storage region in the memory, or the like, correlating the pertinent printing data to the pertinent authentication information. In addition, the data storage section  5  also stores authentication information for each user or each group and information about the processing operations which are executable by each particular user under authorization. There is no need for the image forming apparatus  1  incorporating the data storage section  5 , and a configuration in which a storage apparatus for storing the printing data is installed on the network  3 , and when confidential printing is to be performed, the pertinent printing data is acquired from the pertinent storage apparatus may be applied. 
     The display  6  is a display, or the like, which displays various types of information to be held forth to the user. 
     The input section  7  is a section from which the user inputs an instruction to the image forming apparatus  1 , and is generally made up of hardware, such as a mouse, hard keys, and the like. The touch-panel scheme which combines the functions of the display  6  and the input section  7  may be adopted. 
     Herein, the authentication information which is to be used in performing confidential printing is inputted from the input section  7 . An apparatus which reads the pertinent authentication information from a card-like storage medium storing the authentication information and carried by the user, such an apparatus as that which reads information about a living body feature of the user; such as a fingerprint, or the like, may be applied as the input section  7 . 
     The image forming section  8  forms an image generated from the printing data on a sheet of paper. 
     While controlling the entire image forming apparatus  1 , the main controller  9  carries out display control of the display  6 ; control of processing in response to an instruction based on a prescribed operation through the input section  7 , and the like; and control of various functions for image forming processing to be carried out by the image forming section  8 , and the like. 
     The confidential printing control unit  10  controls the confidential printing of the printing data stored in the data storage section  5 , and as shown in  FIG. 2 , includes an authentication information processing section  11 , a confidential printing list controller  12 , and a confidential printing controller  13 . 
     A configuration in which a printing control program including the above described confidential printing control unit  10  as a function is incorporated in a general-purpose image forming apparatus may also be applicable. In such a case, the printing control program is stored in the storage section (for example, a hard disk, or the like) of the image forming apparatus, and the computation section (for example, the CPU and the like) of the image forming apparatus executes the printing control program stored in the storage section. In addition, the printing control program may be stored in and provided from a storage medium, such as one of the various memories, an optical disk, and may also be distributed through a communications line, such as a network, or the like. 
     In a case where confidential printing is to be performed using the image forming apparatus  1  pertaining to the exemplary embodiment of the present invention, it is necessary to twice input the authentication information to the image forming apparatus  1 . 
     Specifically, when the user who sends the printing data provided with authentication information for performing confidential printing from the information processing apparatus  2  to the image forming apparatus  1  inputs the authentication information for the first time (hereinafter to be referred to as the first authentication information) to the image forming apparatus  1 , the image forming apparatus  1  displays a list of printing data on the basis of the first authentication information (hereinafter to be referred to as a confidential printing list). And, when the user selects the printing data for performing printing from the confidential printing list by inputting the authentication information for the second time (hereinafter to be referred to as the second authentication information), the image forming apparatus  1  performs confidential printing on the basis of the second authentication information. 
     Next, the functional operation of the image forming apparatus  1  when the first authentication information is inputted will be described with reference to  FIG. 3 . 
     When the first authentication information is inputted from the input section  7 , the main controller  9  receives the first authentication information, and passes the first authentication information to the authentication information processing section  11 . When receiving the first authentication information, the authentication information processing section  11  makes determination of whether the first authentication information is valid (hereinafter to be referred to as authentication processing), and in a case where the first authentication information is valid, the authentication information processing section  11  passes the first authentication information to the confidential printing list controller  12 . At this time, the main controller  9  enables the functions other than the printing start function (for example, various functions for image forming processing to be carried out by the image forming section  8 ). 
     Upon receiving the first authentication information, the confidential printing list controller  12  reads the information about the printing data corresponding to the first authentication information from the printing data stored in the data storage section  5  in correlation to the authentication information for preparation of a confidential printing list to pass it to the main controller  9 . Upon receiving the confidential printing list, the main controller  9  displays it on the display  6 . 
       FIG. 4  gives one example of the confidential printing list. From the confidential printing list, the user selects the printing data to be printed. For example, in a case where the display  6  is of touch-panel scheme, the desired printing data is selected by using a finger to touch the field for the printing data to be printed, and as shown in  FIG. 5 , the selected printing data field is displayed while being highlighted. A finger, or the like, is used to touch the “Print” button as shown in  FIG. 5  to instruct the image forming apparatus  1  to start the printing of the selected printing data, and then second authentication information is inputted from the input section. 
     Next, the functional operation of the image forming apparatus  1  when the second authentication information is inputted will be described with reference to  FIG. 6 . 
     When the second authentication information and a selection of the printing data to be printed are inputted from the input section  7 , the main controller  9  receives the second authentication information and the selection, and passes the second authentication information to the authentication information processing section  11 , while passing the selection to the confidential printing controller  13 . Upon receiving the second authentication information, the authentication information processing section  11  carries out authentication processing of the second authentication information. In a case where it is determined that the second authentication information is valid, the authentication information processing section  11  passes the second authentication information to the confidential printing controller  13 . Upon receiving the second authentication information from the authentication information processing section  11  and the selection from the main controller  9 , the confidential printing controller  13  reads the printing data for the selection from the printing data stored in the data storage section  5 . In a case where the pertinent selected printing data is included in the printing data printable on the basis of the second information, the confidential printing controller  13  passes the pertinent printing data to the image forming section  8 . Upon receiving the pertinent printing data, the image forming section  8  forms an image generated from the pertinent printing data on the sheet of paper. 
     Next, one example of the flow of processing which is carried out by the image forming apparatus  1  will be described with reference to a flowchart as shown in  FIG. 7 . 
     Upon receiving the first authentication information (S 701 ), the authentication information processing section executes authentication processing of the first authentication information (S 702 ); in a case where the first authentication information is valid (YES at S 703 ), the program proceeds to S 704 ; and in a case where the first authentication information is invalid (NO at S 703 ), the processing procedure is terminated. 
     In a case where the first authentication information is valid (YES at S 703 ), the main controller enables the functions other than the printing start function (S 704 ); the confidential printing list controller determines whether in the printing data storage section, the printing data printable on the basis of the first authentication information is given (S 705 ); in a case where the printing data printable on the basis of the first authentication information is given (YES at S 705 ), the program proceeds to S 806 ; and in a case where the printing data printable on the basis of the first authentication information is not given (NO at S 705 ), the processing procedure is terminated. 
     In a case where the printing data printable on the basis of the first authentication information is given (YES at S 705 ), the confidential printing list controller prepares a confidential printing list (S 706 ), and the main controller displays the confidential printing list on the display (S 707 ). 
     And, the confidential printing controller receives a selection of the printing data to be printed (S 708 ); the authentication information processing section receives the second authentication information (S 709 ); the authentication information processing section executes authentication processing of the second authentication information (S 710 ); in a case where the second authentication information is valid (YES at S 711 ), the program proceeds to S 712 ; and in a case where the second authentication information is invalid (NO at S 711 ), the processing procedure is terminated. 
     In a case where the second authentication information is valid (YES at S 711 ), the confidential printing controller reads the printing data selected at S 708 ; in a case where the printing data selected at S 708  is included in the printing data printable on the basis of the second authentication information (YES at S 712 ), the program proceeds to S 713 ; and in a case where the printing data selected at S 708  is not included in the printing data printable on the basis of the second authentication information (NO at S 712 ), the processing procedure is terminated. 
     In a case where the printing data selected at S 708  is included in the printing data printable on the basis of the second authentication information (YES at S 712 ), the main controller enables the printing start function (S 713 ); and the image forming section executes printing processing of the printing data (S 714 ), and the processing procedure is terminated. The exemplary embodiment of the present invention may have a configuration in which, after the printing process is terminated, the image forming apparatus is returned to the state where the printing start function is disabled while the functions other than the printing start function is enabled. The exemplary embodiment of the present invention may also have a configuration in which the image forming apparatus is returned to the state before the authentication processing of the first authentication information is carried out. 
     Additionally, in a case where, after the selection of the printing data, the second authentication information is inputted without explicitly starting the printing out of the printing data, it may be determined that the instruction for starting the printing is given. 
     Additionally, in a case where the image forming processing is carried out, the user who inputs the second authentication information may be charged a fee by accumulating log of the image forming processing in correspondence with the second authentication information, 
     Next, one example of the flow of processing which is carried out by the image forming apparatus  1  in a case where a configuration in which the first authentication information is compared with the second authentication information will be described with reference to a flowchart as shown in  FIG. 8 . 
     Upon receiving the first authentication information (S 801 ), the authentication information processing section executes authentication processing of the first authentication information (S 802 ); in a case where the first authentication information is valid (YES at S 803 ), the program proceeds to S 804 ; and in a case where the first authentication information is invalid (NO at S 803 ), the processing procedure is terminated. 
     In a case where the first authentication information is valid (YES at S 803 ), the authentication information processing section temporarily stores the first authentication information (S 804 ); the main controller enables the functions other than the printing start function (S 805 ); the confidential printing list controller determines whether, in the printing data storage section, the printing data printable on the basis of the first authentication information is given (S 806 ); in a case where the printing data printable on the basis of the first authentication information is given (YES at S 806 ), the program proceeds to S 807 ; and in a case where the printing data printable on the basis of the first authentication information is not given (NO at S 806 ), the processing procedure is terminated. 
     In a case where the printing data corresponding to the first authentication information is given (YES at S 806 ), the confidential printing list controller prepares a confidential printing list (S 807 ), and the main controller displays the confidential printing list on the display (S 808 ). 
     And, the confidential printing controller receives a selection of the printing data to be printed (S 809 ), the authentication information processing section receives the second authentication information (S 810 ); the authentication information processing section executes authentication processing of the second authentication information (S 811 ); in a case where the second authentication information is valid (YES at S 811 ), the program proceeds to S 813 ; and in a case where the second authentication information is invalid (NO at S 812 ), the processing procedure is terminated. 
     In a case where the second authentication information is valid (YES at S 812 ), the first authentication information which is temporarily stored in the confidential printing controller is compared with the second authentication information (S 813 ); in a case where both pieces of authentication information match to each other (YES at S 814 ), the program proceeds to S 815 ; and in a case where both pieces of authentication information do not match to each other (NO at S 814 ), the processing procedure is terminated. 
     In a case where both pieces of authentication information match to each other (YES at S 814 ), the main controller enables the printing start function (S 815 ), the image forming section executes printing processing of the printing data (S 816 ), the processing procedure being terminated. The exemplary embodiment of the present invention may have a configuration in which, after the printing process is terminated, the image forming apparatus is returned to the state after the authentication processing of the first authentication information is completed, in other words, the state where the printing start function is disabled while the functions other than the printing start function is enabled. The exemplary embodiment of the present invention may also have a configuration in which the image forming apparatus is returned to the state before the authentication processing of the first authentication information is carried out. 
     The foregoing description of the exemplary embodiments of the present invention is provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations will be apparent to practitioners skilled in the art. The exemplary embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to understand the invention for various embodiments and with the various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the following claims and their equivalents.