Patent Abstract:
A printing system includes: a first printer; and an information processing apparatus configured to register a print job in the first printer. The first printer comprises: a decision unit configured to decide a selection condition for selecting the print job to be printer; a determination unit configured to determine whether the print job corresponding to the selection condition decided by the decision unit is registered in a second printer; and a notification unit configured to notify a user of identification information of the other printer if the determination unit determines that the print job corresponding to the selection condition is registered in the second printer. The first printer to which the print job is registered starts printing in response to a print instruction.

Full Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This application is based upon and claims the benefit of priority of Japanese Patent Application No. 2010-235136 filed on Oct. 20, 2010, the contents of which are incorporated herein by reference in its entirety. 
       BACKGROUND 
       [0002]    The present disclosure relates to a printing system and a printer. More particularly, the present disclosure relates to a printing system which includes a plurality of printers, registers a print job in any one of the printers and starts printing in response to a printing instruction for the print job. 
         [0003]    There have been technologies for registering print jobs in printers and instructing the registration destination printers so as to print the print jobs. For example, such a system is known that the same secure job is registered in a plurality of printers, that any one printer starts printing of a secure job after performing authentication, etc. 
       SUMMARY 
       [0004]    However, those printing systems according to the related art have the following problem. That is, in an environment in which a printer in which a print job has been registered exists together with printers in which the print job has not been registered, unless a user knows which printer the print job has been registered in, the user may not obtain a desired printout. 
         [0005]    An aspect of the disclosure was made in order to solve the problem of the printing system according to the related art. That is, an object is to provide a printing system and a printer which can find out the whereabouts of a registered print job. 
         [0006]    A printing system according to the aspect of the disclosure comprises: 
         [0007]    a first printer; and 
         [0008]    an information processing apparatus configured to register a print job in the first printer, 
         [0009]    wherein the first printer comprises:
       a decision unit configured to decide a selection condition for selecting the print job to be printer;   a determination unit configured to determine whether the print job corresponding to the selection condition decided by the decision unit is registered in a second printer; and   a notification unit configured to notify a user of identification information of the other printer if the determination unit determines that the print job corresponding to the selection condition is registered in the second printer,       
 
         [0013]    wherein the first printer to which the print job is registered starts printing in response to a print instruction. 
         [0014]    A printer according to the aspect of the disclosure comprises: 
         [0015]    a storage configured to store printing jobs therein; 
         [0016]    a decision unit configured to decide a selection condition for the printing job to be printed; 
         [0017]    a printing instruction unit that instructs printing of the print job which is stored in the printing job and corresponds to the selection condition decided by the decision unit; 
         [0018]    a printing unit configured to execute printing in response to an instruction of the printing instruction unit; 
         [0019]    a determination unit configured to determine whether the print job corresponding to the selection condition decided by the decision unit is registered in any other printer; and 
         [0020]    a notification unit configured to notify a user of identification information of the other printer if the determination unit determines that the print job corresponding to the selection condition is registered in the other printer. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0021]      FIG. 1  is a block diagram illustrating a configuration of a printing system according to an embodiment. 
           [0022]      FIG. 2  is a block diagram illustrating an electrical configuration of a PC and a printer included in the printing system. 
           [0023]      FIG. 3  is a block diagram illustrating an outline of secure printing. 
           [0024]      FIG. 4  is a diagram illustrating a configuration of a database that stores information common to printers. 
           [0025]      FIG. 5  is a diagram illustrating a configuration of a database that stores information on a printer. 
           [0026]      FIG. 6  is a flow chart illustrating a procedure of a job transmission process of the PC. 
           [0027]      FIG. 7  is a flow chart illustrating a procedure of a job reception process of a printer. 
           [0028]      FIG. 8  is a flow chart illustrating a procedure of a job display process of a printer. 
           [0029]      FIG. 9  is a flow chart illustrating a procedure in which a printer generates a list of jobs of the other printers. 
           [0030]      FIG. 10  is a diagram illustrating an example of a list of jobs of a printer in a case where the printer has a print job of an authenticated user. 
           [0031]      FIG. 11  is a diagram illustrating an example of a list of jobs of the other printers than a printer having no print job of an authenticated user. 
           [0032]      FIG. 12  is a flow chart illustrating a procedure of a registered-job printing process of a printer. 
       
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
       [0033]    Hereinafter, a printing system according to an exemplary embodiment will be described in detail with reference to the accompanying drawings. The printing system according to the present embodiment includes a plurality of printers and a personal computer (PC) for registering secure jobs in the plurality of printers. 
       Entire Configuration of Printing System 
       [0034]    A printing system  500  according to the exemplary embodiment includes printers  201 ,  202 , and  203  having a secure print function and a PC  100  for outputting print data to the printers, as shown in  FIG. 1 . The printers  201 ,  202 , and  203  need not necessarily be the same model (type), and may be different from one another. In the printing system  500 , the PC  100  and the printers  201 ,  202 , and  203  are connected to one another through a network  300  such as Ethernet (a registered trademark). 
         [0035]    The PC  100  includes a printer driver  110  for outputting print jobs corresponding to the printers  201 ,  202 , and  203 . The printer driver  110  of the present embodiment is a universal driver capable of dealing with a plurality of printer types, and generates print jobs according to the specifications of the printers  201 ,  202 , and  203 . The printer driver  110  of the PC  100  is not limited to a universal printer driver, but may be configured by incorporating printer drivers corresponding to the printers. 
         [0036]    The printer  201  includes firmware  211  for controlling an image forming unit, a manipulation unit, and the like. The other printers  202  and  203  also include firmware  221  and firmware  231  according to their types, respectively. 
         [0037]    In the present embodiment, the printing system  500  includes one PC and three printers. However, the present invention is not limited thereto. The printing system  500  may include one or more PCs and one or more printers. Also, the printing system  500  may be connected to other information processing apparatuses or image processing apparatuses. 
       Configuration of PC 
       [0038]    Subsequently, a schematic configuration of the PC  100  will be described. The PC  100  includes a CPU  51 , a ROM  52 , a RAM  53 , a HDD  54 , a manipulation unit  55  such as a keyboard and a mouse, a display unit  56  composed of a liquid crystal display or the like, a network interface  57 , and a USB interface  58 , as shown in  FIG. 2 . 
         [0039]    The HDD  54  (an example of a search-result storage unit and a search condition storage unit) of the PC  100  stores an operating system (OS), device drivers for controlling various kinds of devices, application programs, such as a word processor and a spreadsheet program, having printing instruction functions, and the like. The printer driver  110  also is stored in the HDD  54 . 
         [0040]    The CPU  51  (an example of a designation unit, a search unit, a determination unit, a transmission unit, a prohibition unit, a selection unit, and a setting unit) executes various kinds of processes while storing computation results in the RAM  53  or the HDD  54  in accordance with control programs read from the ROM  52 , application programs read from the HDD  54 , and the like. The operation of the printer driver  110  also is processed by the CPU  51 . 
         [0041]    The network interface  57  and the USB interface  58  are interfaces enabling communication with external devices. In the present embodiment, the PC  100  performs data communication with the printer  201  and others through the network interface  57 . 
       Configuration of Printer 
       [0042]    Subsequently, a schematic configuration of the printer  201  will be described. The printer  201  includes a control unit  30  which includes a CPU  31 , a ROM  32 , RAM  33 , a non-volatile RAM (NVRAM)  34 , an ASIC  35 , and a network interface  37 , as shown in  FIG. 2 . The control unit  30  is electrically connected to an image forming unit  10  for forming images on sheets, and a manipulation panel  40  for displaying operation states and receiving input manipulation of a user. The printers  202  and  203  have almost the same configuration as that of the printer  201 , and thus the redundant description will not be repeated. 
         [0043]    The ROM  32  stores the firmware  211  which is a control program for controlling the printer  201 , various kinds of set options, initial values, etc. The RAM  33  is used as a work area to which various kinds of control programs are read, or a storage area which temporarily stores image data. 
         [0044]    The CPU  31  controls the individual components of the printer  201  through the ASIC  35  while storing process results in the RAM  33  or the NVRAM  34  in accordance with control programs read from the ROM  32  and signals transmitted from various kinds of sensors. The operation of the firmware  211  also is processed by the CPU  31 . 
         [0045]    The network interface  37  is an interface enabling communication with external devices. In the present embodiment, the printer  201  performs data communication with the PC  100  and others through the network interface  37 . 
       Outline of Secure Printing 
       [0046]    Subsequently, secure printing of the printing system  500  will be described. In the printing system  500  of the present embodiment, a secure job which is a print job requiring user authentication is transmitted to a desired printer. If receiving the secure job, the printer registers the secure job in the memory and enters a printing standby state. Then, if user authentication is executed in the printer, printing of the secure job of the user is executed. Hereinafter, printing using this secure job is referred to as secure printing. 
         [0047]    Specifically, in the printing system  500 , as shown in  FIG. 3 , the PC  100  generates a secure job, transmits the secure job to a desired printer (hereinafter, referred to as a transmission destination printer) (the printer  201  in  FIG. 3 ) of the printing system  500 , and registers the secure job in the NVRAM  34  or RAM  33  of the transmission destination printer (registration ( 1 )). 
         [0048]    Then, the user selects any one of the printers of the printing system  500  and inputs information required for user authentication to the selected printer (user authentication ( 2 )). In a case where the selected printer is the transmission destination printer (the printer  201  in  FIG. 3 ) of the secure job, if the user is authenticated, the selected printer extracts secure jobs registered by the authenticated user, from secure jobs registered therein, and displays a list of the extracted secure jobs. Then, if the authenticated user selects a secure job from the displayed list of secure jobs, the selected printer starts printing the selected secure job. 
         [0049]    Meanwhile, in a case where the selected printer is not the transmission destination printer, that is, in a case where the selected printer is a printer (the printer  202  or  203  in  FIG. 3 ) in which the authenticated user has not registered any jobs, the selected printer inquires of the other printers about information regarding print jobs of the authenticated user (inquiry ( 4 )). Then, the other printers respond the information regarding the print jobs of the authenticated user (response ( 4 ). If receiving the responses, the selected printer outputs the received information (job information ( 6 )). 
         [0050]    Printing of the secure job does not start until the user is authenticated. Therefore, other people cannot see the printout or take the printout away, and thus confidentiality is high. Moreover, printing of confidential documents can be supposed on the basis of the high confidentiality, and thus demand for the reliability of printing also is high. Also, even if the user is authenticated by a printer in which the secure job has not been registered, since information on the other printers is output, it is possible to grasp which printer a desired secure job has been registered in. 
         [0051]    The printers  201 ,  202 , and  203  are in a group, and each of the printers  201 ,  202 , and  203  has a database  215  storing information common to the group as shown in  FIG. 4 . Specifically, the database  215  stores a printer password common to the group, names of users which are managed objects, user IDs and user passwords assigned to the users, names of the printers belonging to the group, and IP addresses of the printers. Hereinafter, the database  215  is referred to as the management DB  215 . 
         [0052]    Each of the printers  201 ,  202 , and  203  also has a database  216  storing information on the corresponding printer as shown in  FIG. 5 . Specifically, the database  216  stores the printer name, information indicating the installation location of the printer, registered job names, users who own jobs, and reference flag information. That is, in the database  216 , as a record of job information of a print job, the job name, the user who owns the print job, and a reference flag are stored. The reference flag will be described below in detail. Hereinafter, the database  216  is referred to as the printer DB  216 . 
       Secure Printing Operation 
       [0053]    Subsequently, a procedure of the above-mentioned secure printing is divided into an operation of the PC  100  and an operation of the printers  201 ,  202 , and  203  each of which will be described in detail. In the following description, an operation of the printer  201  will be described. The printers  202  and  203  execute the same operation as that of the printer  201 . 
       Job Transmission Process (PC) 
       [0054]    Above all, a job transmission process executed by the printer driver  110  of the PC  100  will be described with reference to a flow chart of  FIG. 6 . If receiving a printing instruction through, for example, an application program, the printer driver  110  executes the job transmission process. 
         [0055]    First, in step S 101 , the job information of the print job is acquired. In step S 101 , particularly, set information on whether the print job is a secure job or not is acquired. Then, in step S 102 , on he basis of the job information acquired in step S 101 , it is determined whether the print job of which printing has been instructed is a secure job or not. 
         [0056]    If the print job is a secure job (Yes in step S 102 ), in step S 103 , information on the printer selected as the registration destination of the secure job is acquired and the secure job is transmitted to the registration destination printer. The secure job includes print data of a PDL form generated on the basis of the specifications of each of the printers, and information representing that the print job is a secure job. After step S 103 , the job transmission process ends. 
         [0057]    If the print job is not a secure job (No in step S 102 ), in step S 111 , the print job is transmitted to the printer selected as the transmission destination. After step S 111 , the job transmission process ends. 
       Job Reception Process (Printer) 
       [0058]    Subsequently, a job reception process executed by the firmware  211  of the printer  201  will be described with reference to a flow chart of  FIG. 7 . The job reception process is executed in response of reception of a print job transmitted from the PC  100 . 
         [0059]    First, in step S 201 , it is determined whether the received print job is a secure job or not. If the print job is not a secure job (No in step S 201 ), in step S 211 , printing of the received print job starts. After step  211 , the job reception process ends. 
         [0060]    If the received print job is a secure job (Yes in step S 201 ), in step S 202 , the secure job is registered in the RAM  33 . That is, the print data and the user information are stored in the printer DB  216 . At this time, information on a reference flag is added. An initial value of the reference flag is in an ON state. After the registration of the secure job, the job reception process ends. 
         [0061]    In other words, after receiving a print job which is not a secure job, the printer  201  immediately starts printing, and after receiving a secure job, the printer  201  does not immediately start printing, but stores the secure job in the memory and becomes a printing instruction waiting state. 
       Job Display Process (Printer) 
       [0062]    Subsequently, a job display process (an example of a decision unit, a determination unit, a notification unit, and an instruction unit) executed by the firmware  211  of the printer  201  will be described with reference to a flow chart of  FIG. 8 . 
         [0063]    The printer  201  executes user authentication for printing the secure job. If the user is authenticated through the user authentication, the job display process is executed. The printer  201  receives an identification number necessary for identifying the user, for example, by manual input using the manipulation panel  40  or input through wireless communication using an IC tag or the like. Then, the user is identified on the basis of the identification number. 
         [0064]    First, in step  221 , a selection condition of the print job is decided. In the present embodiment, a user ID of the user identified by the user authentication is acquired. Then, in step S 222 , it is determined whether the authenticated user is a management object user registered in the management DB  215 . If the authenticated user is not a management object user (No in step S 222 ), the job display process ends. That is, printing of any secure jobs by users other than the management object users is prohibited. 
         [0065]    If the authenticated user is a management object user (Yes in step S 222 ), in step S 223 , the printer DB  216  is searched for print jobs (secure job in the present embodiment) of the authenticated user. Then, in step S 224 , it is determined whether there is any search target print job or not. 
         [0066]    If the is any search target print job (Yes in step S 224 ), in step S 231 , the printer  201  generates a list of the print jobs searched in step S 223  as a list of jobs registered in the printer  201 . Then, in step S 232 , the list of jobs of the printer  201  generated in step S 231  is displayed in the display unit of the manipulation panel  40 . After step S 232 , the job display process ends. 
         [0067]    Meanwhile, if there is no search target print job (No in step S 224 ), the printer  201  inquires of the other printers about information on print jobs of the authenticated user. Specifically, first, in step S 225 , the printer  201  searches for inquiry destination printers. In the present embodiment, the printer  201  extracts one printer (unprocessed printer), which has not received the inquiry, from the other printers of the same group as that of the printer  201 , with reference to the management DB  215 . 
         [0068]    If there is any unprocessed printer (Yes in step S 226 ), in step S 227 , the printer  201  inquiries of an unprocessed printer about information on print jobs of the authenticated user, and executes a process of generating a list of jobs of the other printers. 
         [0069]    Here, the process of generating a list of jobs registered of the other printers in step S 227  will be described with reference to a flow chart of  FIG. 9 . First, in step S 251 , the printer  201  inquires of an extracted printer, which is an unprocessed printer extracted in step S 225 , about whether any print jobs of the authenticated user has been registered or not. At the time of this inquiry, the printer password and the user ID of the authenticated user are added. After the inquiry in step S 251 , in step S 252 , the printer  201  stands by until the extracted printer responds to the inquiry. 
         [0070]    Meanwhile, if receiving the inquiry of step S 251 , the extracted printer executes a response process (an example of an extraction unit). In the response process, first, in step S 301 , the received printer password is verified, and in step S 302 , it is determined whether the received printer password corresponds to a printer password stored in the management DB  215  of the extracted printer. That is, it is checked whether the printer  201  is a printer belonging to the same group as that of the extracted printer. 
         [0071]    If the received printer password does not correspond to the printer password stored in the management DB  215  of the extracted printer (No in step S 302 ), the extracted printer generates no job information representing that there is no corresponding print job, in step S 311 , and transmits the no-job information to the inquirer printer in step S 307 . If a printer responds information on print jobs of the authenticated user to an inquiry from another printer which does not belong to the same group as that of the corresponding printer, the information on the print jobs of the authenticated user may be leaked, and thus the confidentiality of the secure job may be lack. For this reason, regardless of the print job registration status, a printer responds the no job information to an inquiry from another printer which does not belong to the same group as that of the corresponding printer. 
         [0072]    If the received printer password corresponds to the printer password stored in the management DB  215  of the extracted printer (Yes in step S 302 ), in step S 303 , the extracted printer searches its printer DB  216  for print jobs of the authenticated user. Then, in step S 304 , it is determined whether there is any search target print job. 
         [0073]    If there is any search target print job (Yes in step S 304 ), in step S 305 , the extracted printer generates a list of the print jobs searched for in step S 303 , as a list of jobs registered in the extracted printer. Then, in step S 306 , as a process on the extracted printer, the reference flag of each print job searched for in step S 304  is changed to the ON state. 
         [0074]    Nest, in step S 307 , the extracted printer responds information on the list of jobs to the inquirer printer. In the case of responding the information on the list of jobs, the printer name of the extracted printer and the installation location of the extracted printer other than the information on the list of jobs are added. The printer name and the installation location are stored in the printer DB  216 . 
         [0075]    Meanwhile, if there is no search target print job (No in step S 304 ), the extracted printer generates the no-job information in step S 311 , and responds the no-job information to the inquirer printer in step S 307 . After step S 307 , the response process of the extracted printer ends. 
         [0076]    Returning to the description of the process of generating a list of jobs of the other printers, if a response has been received from the extracted printer (Yes in step S 252 ), in step S 253 , it is determined whether there is any print job of the authenticated user. If there is any print job of the authenticated user (Yes in step S 253 ), that is, if the information on the list of jobs has been received from the extracted printer, in step S 254 , the received information on the list of jobs is added to the list of jobs of the other printers. After step S 254 , or if there is no print job of the authenticated user in the extracted printer (No in step S 253 ), that is, if the no-job information is received from the extracted printer, the process of generating the list of jobs of the other printers ends. 
         [0077]    Returning to the description of the job display process of  FIG. 8 , after the list of jobs of the other printers is updated in step S 227 , the job display process returns to step S 225 , in which an unprocessed printer is searched for again. If there is any unprocessed printer (Yes in step S 226 ), in step S 227 , the process of generating the list of jobs of the other printers is executed. That is, the process of generating the list of jobs of the other printers is repeated until there is no unprocessed printer. 
         [0078]    If there is no unprocessed printer (No in step S 226 ), in step S 232 , the finally updated list of jobs of the other printers is displayed on the display unit of the manipulation panel  40 . After step S 232 , the job display process ends. 
         [0079]    That is, in the job display process, if the print jobs of the authenticated user have been registered in the printer  201 , the list of print jobs of the authenticated user registered in the printer  201  is output. Meanwhile, if any print jobs of the authenticated user have not been registered in the printer  201 , the list of print jobs of the authenticated user registered in the other printers is output. 
       Display Examples 
       [0080]    Hereinafter, examples of the display in step S 232  will be described. For example, it is assumed that a user A performs printing in the printer  201 . Also, it is assumed that a plurality of print jobs including print jobs of the user A have been registered in the printer  201 , as shown in  FIG. 10 . 
         [0081]    In this case, in the job display process, the print jobs of the user A are extracted from the printer DB  216 , and a list of print jobs of the user A is generated as the list  217  of jobs of the printer  201 . Then, the contents of the list  271  of jobs of the printer  201  are output on the display unit of the manipulation panel  40 . 
         [0082]    At this time, on the display unit of the manipulation panel  40 , as shown in  FIG. 10 , a print button  41 , an erase button  42 , and a list print button  43  are displayed. If the print button  41  is pushed, printing of a selected print job starts. If the erase button  42  is pushed, the selected print job is erased from the memory. With this erase, a corresponding record is erased even from the list  217  of jobs of the printer  201  and the printer DB  216 . If the list print button  43  is pushed, the contents of the list  217  of jobs of the printer  201  are printed. 
         [0083]    Meanwhile, it is assumed that any print jobs of the user A has not been registered in the printer  201 . Also, it is assumed that a plurality of print jobs including a print job of the user A have been registered in each of the printers  202  and  203 , as shown in  FIG. 11 . 
         [0084]    In this case, in the job display process, the printer  201  inquires of the printers  202  and  203  about whether there is any print job of the user A, and acquires a list of print jobs of the user A generated by each of the printers  202  and  203 . Then, the printer  201  generates a list  218  of jobs of the other printers which is a list of print jobs of the user A existing in the other printers. Then, the printer  201  outputs the contents of the list  218  of jobs of the other printers to the display unit of the manipulation panel  40 . Also, the printer  201  acquires information on the printer names and the installation locations from the other printers  202  and  203  having received the inquiry. Then, when displaying the list  218  of jobs of the other printers, the printer  201  displays each print job in association with which printer the corresponding print job has been registered in, and where the corresponding printer has been installed, as shown in  FIG. 11 . 
         [0085]    Further, on the display unit of the manipulation panel  40 , as shown in  FIG. 11 , the erase button  42  and the list print button  43  are displayed. If the erase button  42  is pushed, an erase instruction for a selected print job is output to another printer in which the selected print job has been registered. With this, a corresponding record is erased even from the list  218  of jobs of the other printers. If the list print button  43  is pushed, the contents of the list  218  of jobs of the other printers are printed. 
         [0086]    Items and layouts displayed on the display unit of the manipulation panel  40  are not limited to those shown in  FIGS. 10 and 11 . That is, at least identification information of each printer in which any print job of the identified user has been registered may be displayed, and the print job name, the installation location, and the like may not be necessarily displayed. Alternatively, display items such as detailed information (such as the number of pages and the registration date and time) of each print job may increase. 
         [0087]    While the list  218  of jobs of the other printers is being displayed, the print button  41  is not displayed in consideration of the confidentiality. That is, the user of a printer in which a print job has been registered may be a malicious person (for example, a person having a stolen employee ID card). Therefore, it is undesirable to unconditionally permit printing. For this reason, the print button  41  is not displayed, such that printing by remote manipulation or printing of a print job transmitted from another printer is not executed. 
       Registered-Job Printing Process (Printer) 
       [0088]    Subsequently, a registered-job printing process (an example of a prohibition unit) executed by the firmware  211  of the printer  201  will be described with reference to a flow chart of  FIG. 12 . If the print button  41  displayed on the display unit of the manipulation panel  40  of the printer  201  is pushed, the printer  201  can print the print job registered in the printer  201 . If the print button  41  is pushed, the registered-job printing process is executed. 
         [0089]    First, in step S 271 , it is determined whether the reference flag of the print job of which printing has been instructed is the ON state or not. A reference flag of a print job searched for by a printer having received an inquiry about print jobs of a specific user from another printer becomes the ON state (see step S 306  of  FIG. 9 ). If the reference flag is the OFF state (No in step S 271 ), the printer  201  starts printing of the selected print job in step S 274 , and ends the registered-job printing process. 
         [0090]    If the reference flag is the ON state (Yes in step S 271 ), in step S 272 , the printer  201  receives an input of a user password. As described above, an inquiry from another printer may be attributable to a malicious person. For this reason, with respect to a print job which is an object of an inquiry from anther printer, the printer  201  requires an input of a user password before printing, so as to improve the confidentiality of the print job. 
         [0091]    After the input of the password is received, in step S 273 , it is determined whether the received password corresponds to any user password registered in the management DB  215 . If the received password corresponds to any user password registered in the management DB  215  (Yes in step S 273 ), in step S 274 , printing of the selected print job starts. Meanwhile, if the received password does not correspond to any user password registered in the management DB  215 , in step S 281 , an error message is displayed without printing the selected print job. After step S 274  or S 281 , the registered-job printing process ends. 
         [0092]    According to the printing system  500  of the present embodiment described above, a printer acquires the whereabouts of a print job corresponding to the selection condition (a print job of the authenticated user in the present embodiment) in the other printers, and notifies the acquisition result to the display unit of the manipulation panel  40 . Accordingly, the user can grasp a printer in which a print job corresponding to the selection condition has been registered. Therefore, for example, after registering a printer job, even if the user forgets a registration destination printer of the printer job, the user can see the whereabouts of the print job without returning to a registration source to check a history. As a result, the desired print job can be reliably printed. 
         [0093]    In a case where the user forgets to instruct printing after registering a print job, the print job may be left in the memory of the printer without being printed for no matter how long time. However, according to the printing system  500  of the present embodiment, the registration statuses of the other printers are notified, such that the user can recognize the existence of a print job of which printing has been forgot by the user. 
         [0094]    The present embodiment is merely an example, and does not limit the present invention. Therefore, the present invention can be improved and modified in various forms without departing from the scope. For example, the printer may be any device, such as a combined device or a copy machine, having a print function. Also, the information processing apparatus is not limited to a PC, but may be a portable information terminal or a workstation. 
         [0095]    In the embodiment, the present invention is applied to a printing system which registers a secure job in a predetermined printer; however, the registered print job is not limited to a secure job. That is, the present invention is applicable to any system in which a print job is registered in a designated printer, and the printer starts printing in response to a printing instruction of the print job, and the print job may not require authentication to start printing. 
         [0096]    In the embodiment, the selection condition for print jobs to be notified is print jobs of the authenticated user; however, the present invention is not limited thereto. For example, the selection condition may be a registration time of a print job or the kind of print data. 
         [0097]    In the embodiment, a print job is registered in one printer of a group, but a registration destination of a print job is not necessarily one. That is, a print job may be simultaneously registered in a plurality of printers. In this case, if printing of the print job is executed in one of the registration destination printers, the other registration destination printers are instructed to erase the corresponding print job. 
         [0098]    In the embodiment, in a case where the print job of the authenticated user has not been registered in a printer, the printer inquires of the other printers about print jobs of the authenticated user. However, the condition for inquiring of the other printers is not limited thereto. For example, regardless of the registration status of a printer, after each time a selection condition is decided, the corresponding printer may inquiry of the other printers about the registration statues of print jobs corresponding to the selection condition. Alternatively, the inquiring may be executed on the basis of an instruction of the user, not immediately after a selection condition is decided. 
         [0099]    In the embodiment, a printer directly inquires the other printers about whether there is any print job corresponding to the selection condition; however, the present invention is not limited thereto. For example, in a case of disposing a centralized printer server for managing registration statues of printing jobs of all the printers of a group, inquiring of the printer server may be executed.

Technology Classification (CPC): 6