JP5230825B2 - Printing system, printing system control method, printing apparatus, and program - Google Patents

Description

  The present invention relates to a printing system having a security function and a control method of the printing system.

  In recent years, with the networking of office machines, there are increasing cases in offices where a single printing device connected to a network is shared by a plurality of client computers. In such a usage environment, there may occur a situation in which the printed matter that has been output is taken away by a third party or seen. Such a situation becomes a problem when printing is performed while ensuring security, for example, when confidential information or private information that is difficult to be seen by a third party is printed.

  As a method for solving the above problem, there is a function called confidential printing (also referred to as secure printing) (see Patent Document 1). In confidential printing, first, a printer driver that transmits a password in addition to print job data is installed in a client computer. Then, by using this printer driver to instruct a printing process to the printing apparatus, print job data and a password are transmitted to the printer. The printing apparatus that has received the print job data and the password does not immediately start the printing process, but temporarily stores the print job data and the password data in a storage medium in the printing apparatus.

  When the user wants the printing apparatus to perform printing according to the print job data, the following operation is performed. First, for example, a print job list is displayed on the user interface using a user interface provided in the printing apparatus. Then, a print job to be printed is selected from the displayed job list, and a password is input. The printing apparatus starts the printing process according to the print job data only when the input password matches the password stored in the storage medium together with the print job data. At this time, since the user is already in front of the printing apparatus, the target confidential document can be received without being seen by a third party and without being stolen by the third party. In the present specification, such a print job that performs an authentication process before printing is called a secure print job.

JP 2003-186657 A

  However, it is assumed that after the printing process of the secure print job is actually started by the printing apparatus, for example, “no paper” occurs in the printing apparatus in the job. In this case, it is expected that the user will leave the place in order to pick up paper for paper supply. In other words, there is a possibility that a period in which an appropriate user is absent from the front of the printing apparatus may occur. In this case, there is a possibility that a printed matter of the secure print job can be seen by a third party while the appropriate user is absent, and there is a concern that the confidentiality of the data may be maintained. In addition, when the user leaves the printing apparatus due to “no paper” or the like, the printed matter of the secure print job that has been output halfway can be removed by the user of the job to maintain confidentiality. It can also be considered as one of these. However, it is expected that problems that are difficult to deal with remain even with such a method. For example, if a finishing process such as stapling is designated for the job, there is a concern that another desired problem may occur that the desired finishing process cannot be performed by removing the printed material halfway. The

  Further, even if there is a sheet to be replenished near the printing apparatus during the recovery process such as “no sheet”, there is no change in the time required for performing the recovery process. In this case, the time required from the start of printing of the secure print job to the completion of printing is longer than the time required when printing can be completed without recovery processing by the time required for performing the recovery processing. I can say. In other words, it is possible for a third party to see the print result of the secure print job through the recovery process rather than when the secure print job can be completed without the recovery process. Can be expected to be high.

  In addition, it is desirable to prevent as much as possible the occurrence of another new problem that would affect the productivity of other jobs in order to cope with the above-described problems. Thus, it is considered that there are still problems relating to the secure print job.

  The present invention has been made in view of the above problems, and an object thereof is to construct a convenient printing environment that flexibly copes with problems as assumed in the background art.

  For example, an object of the present invention is to reduce the possibility of an interruption factor occurring after starting a printing process in a job that requires an authentication process before printing, and to maintain confidentiality in a job that requires an authentication process before printing. Another object of the present invention is to reduce the possibility of another new problem that a desired finishing process is not performed on a printed matter of a job that requires an authentication process before printing in order to achieve such an object.

  Another object of the present invention is to prevent the occurrence of another new problem that affects the productivity of other jobs in order to achieve the above-described purpose.

  Then, confidentiality is maintained in a job that requires authentication processing before printing. In addition, it is possible to reduce the possibility of another problem that the desired finishing process is not performed. It is another object of the present invention to prevent as much as possible other problems that affect the productivity of other jobs.

  Other objects and features of the present invention will be apparent from, for example, the following specification and drawings.

In order to achieve the above object, a printing system according to an aspect of the present invention includes:
Receiving means for receiving print data generated by the printer driver;
When printing is started after all the received print data is expanded into image data, it is confirmed based on the image data after expansion that the resources necessary to complete the printing are available. When printing is started and printing is started before all the received print data is expanded into image data, the image can be printed without checking whether or not the resources necessary for completing the printing are available. Printing means for starting.

  According to the present invention, it is possible to construct a convenient printing environment that flexibly copes with problems as assumed in the background art. For example, the possibility of an interruption factor occurring after starting a printing process in a job that requires an authentication process before printing is reduced, and confidentiality in a job that requires an authentication process before printing can be maintained. Further, for example, since confidentiality is maintained, it is possible to reduce the possibility of occurrence of another new problem that a desired finishing process is not performed on a printed matter of a job that requires an authentication process before printing. Further, for example, since confidentiality is maintained, it is possible to reduce the occurrence of another new problem that affects the productivity of other jobs.

1 is a diagram illustrating a print system according to a first embodiment. 1 is a block diagram illustrating a configuration of an image forming apparatus according to a first embodiment. FIG. 2 is a block diagram illustrating a detailed configuration of an in-device controller in the image forming apparatus. 2 is a diagram illustrating an operation unit of the image forming apparatus. FIG. FIG. 2 is a diagram illustrating a detailed configuration of a scanner unit of the image forming apparatus. 2 is a block diagram illustrating a configuration of a scanner controller of the image forming apparatus. FIG. 2 is a diagram illustrating a detailed configuration of a printer unit of the image forming apparatus. FIG. 2 is a diagram illustrating a configuration of a finisher unit of the image forming apparatus. FIG. It is a block diagram which shows the structure of the external controller by 1st Embodiment. 6 is a diagram illustrating an example of a display screen by a printer driver. FIG. 6 is a diagram illustrating an example of a screen for print detail setting by a printer driver. 6 is a diagram illustrating a display example of a print status screen in the image forming apparatus. FIG. 6 is a flowchart illustrating a confidential print process according to the first embodiment. FIG. 10 is a diagram illustrating a display example of a print status screen during image accumulation. FIG. 10 is a diagram illustrating a display example of a print status screen after image accumulation. FIG. 6 is a diagram illustrating an example of print information representing print settings and paper used at the time of printing in the first embodiment. It is a figure which shows the example of the password input screen with a warning in 1st Embodiment. It is a figure which shows the example of the password input screen without a warning in 1st Embodiment. It is a flowchart explaining the confidential printing process by 2nd Embodiment. FIG. 10 is a diagram illustrating an example of a screen when printing of another confidential print job is being executed in the second embodiment. It is a figure which shows the example of a printing status screen when the priority process at the time of the confidential printing start by 2nd Embodiment is performed. It is a figure which shows the warning screen example by 3rd Embodiment.

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

<First Embodiment>
FIG. 1 is a block diagram showing a configuration of a printing system 100 according to the first embodiment. FIG. 2 is a block diagram illustrating a configuration of the image forming apparatus 101 in the print system 100 according to the first embodiment. An overview of the functions of the printing system of the present embodiment will be described with reference to FIGS.

  The image forming apparatus 101 is a color scanner / printer apparatus capable of full color scanning or printing. The image forming apparatus 101 is connected to an external controller 104 via an internal network 102 and a video cable 103 for transferring image data. The external controller 104 is connected to the external network 105. A computer terminal 106 is connected to the external network 105. Accordingly, the image forming apparatus 101 is connected to the computer terminal 106 via the external network 105.

  As shown in FIG. 2, the image forming apparatus 101 includes a scanner unit 201 and a printer unit 202, and has a copy function for printing an image read from the scanner unit 201 by the printer unit 202. The operation unit 203 provides a user interface. In other words, the operation unit 203 includes an input device for a user to instruct execution of a function of the image forming apparatus 101 and to perform operation setting at the time of function execution. The operation unit 203 includes a display device for notifying the user of the state of the image forming apparatus 101.

  An in-device controller 204 inside the image forming apparatus 101 performs overall operation control, state management, and image processing of the image forming apparatus 101. For example, the in-device controller 204 controls the operations of the scanner unit 201 and the printer unit 202 as described above, and performs user instruction / status display processing from the operation unit 108. The in-device controller 204 also performs processing of image data handled by the scanner unit 201 and printer unit 202 and data transmission / reception control with the external controller 104 connected via the internal network 102. A finisher unit 205 for performing post-processing such as stapling is connected downstream of the printer unit 202. Note that the finisher unit 205 is an option, and the image forming apparatus 101 may not include the finisher unit 205.

  In the print system 100 of the present embodiment, a document created by a computer is transmitted from the computer terminal 106 to the external controller 104 via the external network 105 as page description language (PDL) data. The external controller 104 expands the received PDL data into an image, and generates image data in a format that can be printed by the image forming apparatus 101. The external controller 104 transmits the generated image data to the image forming apparatus 101 via the video cable 103, and also uses the internal network 102 to send various information regarding operation settings during printing and image data transmitted via the video cable 103. connect. The image forming apparatus 101 executes printing based on image data received from the external controller 104 via the video cable 103 and various information received via the internal network 102. In this way, the print system 100 according to the present embodiment realizes a network printer function in which the image forming apparatus 101 prints PDL data transmitted from the computer terminal 106 via the network.

  The external controller 104 has a function of expanding the PDL sent from the computer terminal 106 into an image in two types of color spaces, an RGB color space or a CMYK color space, using a profile for performing color space conversion. Then, images of two kinds of color spaces of RGB and CMYK are transferred onto the video cable 103. Note that the RGB color space is a color space for expressing a color by Red / Green / Blue. Similarly, the CMYK color space is a color space for expressing colors by Cyan / Magenta / Yellow / Black.

  Further, the print system of the present embodiment has a network scan function for displaying / saving an image scanned by the image forming apparatus 101 on the computer terminal 106. The network scan function is roughly classified into a pull scan function / push scan function according to its operation mode. In the pull scan function, a scan instruction by the user is issued at the computer terminal 106. Further, in the push scan function, a scan instruction by the user is given by the operation unit 203 of the image forming apparatus 101. In other words, the scanning instructions are different between the two. However, regardless of the pull scan / push scan function, the image forming apparatus 101 reads a document image previously placed on the scanner unit 201 in accordance with an instruction from the user. Then, the image forming apparatus 101 transfers the read image to the computer terminal 106 via the internal network 102, the external controller 104, and the external network 105 in a format suitable for handling by the computer terminal 106.

  Since the image forming apparatus 101 of the printing system according to the present embodiment handles a full color image, the image forming apparatus 101 has an image quality adjustment function for the purpose of improving the image quality in the printer unit 202. There are two types of such image quality adjustment functions: density adjustment by the image forming apparatus 101 alone and image quality adjustment by printing an electronic document from the computer terminal 106.

  In density adjustment with the image forming apparatus 101 alone, first, the scanner unit 201 reads an image obtained by printing a prescribed image with the printer unit 202. The characteristics of the printer unit 202 obtained based on this reading are reflected in the density adjustment value performed in the image processing of the in-device controller 204. By this adjustment, a stable image can be printed. An image of the regulations used for printing for density adjustment is generated by the in-device controller 204.

  On the other hand, image quality adjustment by printing an electronic document from the computer terminal 106 is led by the external controller 104. First, a prescribed image is transmitted from the external controller 104 to the image forming apparatus 101 and is printed on the printer unit 202. Then, the printed image is read by the scanner unit 201, and the read image is sent to the external controller 104. The external controller 104 recognizes the image characteristics of the image forming apparatus 101 based on the received image. The recognized characteristics are held in the external controller 104 as values that the external controller 104 considers when developing PDL data from the computer terminal 106 into an image.

[Configuration of In-Device Controller 204]
Next, the configuration of the in-device controller 204 will be described with reference to FIG. The in-device controller 204 includes a CPU 301, a work memory 302, an image processing unit 303, an image memory 304, a mass storage device (hereinafter referred to as HDD) 305, a facsimile (FAX) communication unit 306, and a network I / F unit 307. The image processing unit 303 is connected to the scanner unit 201 and the printer unit 202 via the image signal lines 311 and 312, and is connected to the external controller 104 via the video cable 103. Further, the image processing unit 303 is connected to an image memory 304, and a FAX communication unit 306 is connected to the image memory 304.

  The image data read by the scanner unit 201 is stored in the HDD 305 via the image processing unit 303 and the image memory 304. The stored image data is sent again to the printer unit 202 via the image memory 304 and the image processing unit 303 for printing. Similarly, image data input from the external controller 104 via the video cable 103 is stored in the HDD 305 via the image processing unit 303 and the image memory 304. The FAX communication unit 306 can input and output image data used for facsimile transmission / reception. Using the image storage function in the HDD 305, image data input from the scanner unit 201 or image data input from the external controller 104 via the video cable 103 is immediately stored in the HDD 305 without being output to the outside. I can keep it. Thereby, a so-called box function is realized. According to the box function, when the user wants to print or fax the image stored in the HDD 305, the user can print / fax according to an instruction from the operation unit 203, or the images stored in the HDD 305 can be shared among a plurality of users. Can be.

  Furthermore, the print system of the present embodiment also has a file transmission function of sending an image stored in the HDD 305 to a desired computer terminal connected to the external network 105 and reusing it at the computer terminal. In this file transmission function, the image processing unit 303 converts an image stored in the HDD 305 into an image (for example, Jpeg) in a file format generally used in a computer terminal or the like. The converted file can be sent to a desired computer terminal via the network interface unit 307, the internal network 102, the external controller 104, and the external network 105.

  The CPU 301 operates according to a program stored in the HDD 305 and also controls the operation unit 203. Further, the CPU 301 controls each processing unit such as the FAX communication unit 306 in the device. The CPU 301 performs communication with the printer unit 202 and the scanner unit 201 for synchronization of image data transmission / reception. Further, the CPU 301 accesses the network interface unit 307 for communication with the external controller 104 via the internal network 102.

  Further, the in-device controller 204 transmits the data stored in the HDD 305 to the computer terminal 106 via the internal network 102 and the external controller 104 by a web service or the like. Conversely, information from the computer terminal 106 can be stored in the image memory 304 or the HDD 305 via the internal network 102 and the external controller 104 by a Web service or the like. As a result, a remote operation service is provided that allows the computer terminal 106 to refer to the state of the image forming apparatus 101 and to set the image forming apparatus 101 from the computer terminal 106.

[Operation unit 203]
Next, the operation unit 203 of the image forming apparatus 101 will be described with reference to FIG. The operation unit 203 includes an LCD display screen 401. The LCD display screen 401 displays the setting status and operation status of the image forming apparatus 101. FIG. 4 shows a state where a copy screen is displayed on the operation setting screen 402 as an example. The copy screen displays zoom settings, paper feed stage settings, the number of copies, and the like during copying. In response to the selection of the function key 403 on the operation setting screen 402, the display on the liquid crystal (LCD) display screen 401 changes to a screen of a facsimile function or a print function from the external controller 104. Also, at the bottom of the LCD display screen 401, there is a status message display unit 404 that indicates the status of the image forming apparatus 101 and the status of functions other than the selected function screen. In the lower right part, a system status key 405 for changing the operation setting screen 402 to the system status screen is arranged. On the system status screen, details regarding the status of the image forming apparatus 101 and the status of functions other than the selected function screen can be referred to. The system status screen will be described later with reference to FIG.

  The operation unit 203 has a numeric keypad 406 for inputting numerical values. The ID key 407 is a key for transitioning the display of the liquid crystal display screen 401 to an ID input screen for inputting a user ID for determining a user to be used. When using functions such as copying and faxing in the image forming apparatus 101, it is necessary to input a user ID for identifying the user to be used. The ID input screen is used for inputting such a user ID. A reset key 408 is used to return the setting state of each function set on the operation setting screen 402 to a default state. A detailed setting key 409 is used for transitioning the display on the liquid crystal display screen 401 to a screen for performing details of operation settings of the image forming apparatus 101 and network settings. A start key 410 and a stop key 411 are buttons for starting and stopping the operation of each function.

[Configuration of Scanner Unit 106]
The configuration of the scanner unit 201 will be described with reference to FIG. A document 502 to be read is placed on the document table glass 501. The original 502 is irradiated by an illumination lamp 503, and the reflected light passes through mirrors 504, 505, and 506 and forms an image on the CCD 508 by a lens 507. The first mirror unit 510 including the mirror 504 and the illumination lamp 503 moves at a speed v, and the second mirror unit 511 including the mirrors 505 and 506 moves at a speed v / 2. As the first and second mirror units 510 and 511 move in this way, the entire surface of the original 502 is scanned. The first mirror unit 510 and the second mirror unit 511 are driven by a motor 509. The operations of the units 510 and 511 of the scanner unit 201 are controlled by signals from the scanner controller unit 512. The scanner controller unit 512 controls the operations of the units 510 and 511 in accordance with instructions from the in-device controller 204.

  Next, image processing in the scanner controller unit 512 will be described with reference to FIG. The input optical signal is converted into an electric signal by the CCD sensor 601. The CCD sensor 601 is an RGB 3-line color sensor, and R, G, and B image signals are input to the A / D converter 602. The A / D conversion unit 602 first performs gain adjustment and offset adjustment on the input image signal, and then converts it into 8-bit digital image signals R0, G0, and B0 for each color signal by the A / D converter. The shading correction unit 603 performs a known shading correction using a reference white plate reading signal for each color. The color line sensors of the CCD sensor 601 are arranged at a predetermined distance from each other. Accordingly, such a spatial shift in the sub-scanning direction is corrected by the line delay adjustment circuit (line interpolation unit) 604.

  The input masking unit 605 converts the read color space determined by the spectral characteristics of the R / G / B filter of the CCD sensor 601 into an NTSC standard color space. The input masking unit 605 is input using a 3 × 3 matrix operation using constants unique to the apparatus in consideration of various characteristics such as sensitivity characteristics of the CCD sensor 601 and spectral characteristics of the illumination lamp (R0, G0, B0) The signal is converted into a standard (R, G, B) signal. A luminance / density conversion unit (LOG conversion unit) 606 is configured by a look-up table (LUT), and converts RGB luminance signals into C1, M1, and Y1 density signals. The signal thus converted is sent to the in-device controller 204.

[Configuration of Printer Unit 202]
FIG. 7 shows an overview of the printer unit 202. The polygon mirror 701 receives four laser beams emitted from the semiconductor laser driving unit. One of the laser beams scans the photosensitive drum 705 through mirrors 702, 703, and 704. Another laser beam scans the photosensitive drum 709 through mirrors 706, 707, and 708. Further, another laser beam scans the photosensitive drum 713 through mirrors 710, 711, and 712. Further, another laser beam scans the photosensitive drum 717 through the mirrors 714, 715 and 716.

  On the other hand, the developing device 718 supplies yellow (Y) toner, and develops the latent image formed on the photosensitive drum 705 in accordance with the scanning of the laser beam to form a yellow toner image. The developing device 719 supplies magenta (M) toner, and develops the latent image formed on the photosensitive drum 709 in accordance with the scanning of the laser beam to form a magenta toner image. The developing device 720 supplies cyan (C) toner and develops the latent image formed on the photosensitive drum 713 in accordance with the scanning of the laser beam to form a cyan toner image. Further, the developing device 721 supplies black (B) toner, and develops the latent image formed on the photosensitive drum 717 in accordance with the scanning of the laser beam to form a black toner image. The toner images of the above four colors (Y, M, C, K) are transferred to a sheet, and a full color output image can be obtained.

  A sheet fed from one of the sheet cassettes 722 and 723 and the manual feed tray 724 is adsorbed onto the transfer belt 726 via a registration roller 725 and conveyed. In synchronism with the timing of paper feeding, toner of each color is developed in advance on the photosensitive drums 705, 709, 713, and 717, and the toner is transferred to the sheet as the sheet is conveyed. The sheet on which the toner of each color is transferred is separated from the transfer belt 726 and conveyed to the fixing device 728 by the conveyance belt 727. In the fixing device 728, the toner is fixed on the sheet. The sheet that has passed through the fixing device 728 is once guided downward by the flapper 729, and after the trailing edge of the sheet has passed through the flapper 729, the sheet is switched back and discharged. As a result, the sheets are discharged in a face-down state, and the correct page order is obtained when printing is performed sequentially from the first page.

  The four photosensitive drums 705, 709, 713, and 717 are arranged at equal intervals with a distance d, and the sheet is moved at a constant speed v (however, the first mirror unit 510 of the scanner unit moves by the conveyance belt 724). It is transported at an independent rate). The polygon mirror 701 and the semiconductor laser are driven so that a toner image is formed on the photosensitive drum in synchronization with the timing according to the positional relationship and the conveyance speed.

[Configuration of Finisher 205]
FIG. 8 shows an overview of the finisher unit 205. The sheet discharged through the fixing unit 728 of the printer unit 202 enters the finisher unit 205. The finisher unit 205 includes a sample tray 801 and a stack tray 802, and the discharge destination tray is switched according to the type of job and the number of discharged sheets.

  There are two sorting methods. One is a bin sorting method that uses a plurality of bins to distribute output sheets to each bin for each job. The other one is an electronic sorting function, which will be described later, and a shift sorting method in which bins (or trays) are shifted forward in FIG. 8 and output sheets are sorted for each job. The electronic sort function is called collate. If the above-mentioned in-device controller 204 has a large-capacity memory (for example, the image memory 304 and the HDD 305), a so-called collate function that changes the buffered page order and discharge order using this memory can be used. Supports electronic sorting functions. The group function is a function for sorting by page, while sorting is sorted by job.

  Further, when discharging to the stack tray 802, it is also possible to store the sheets before being discharged for each job and bind them by the stapler 805 immediately before discharging. In addition to the above two trays, there are a Z-folder 804 for folding paper into a Z-shape and a puncher 806 for punching two (or three) holes for files, depending on the type of job. Each process.

  Further, the saddle stitcher 807 binds the central portion of the sheet at two places, and then folds the sheet in half by biting the central portion of the sheet with a roller, and performs a process of creating a booklet such as a weekly magazine or pamphlet. . The sheets bound by the saddle stitcher 807 are discharged to the booklet tray 808.

  In addition, although not shown in FIG. 8, it is also possible to add a finisher such as binding by glue (glue) for bookbinding or trim (cutting) for aligning the end surface opposite to the binding side after binding. It is.

  The inserter 803 is for sending a sheet set on the tray 809 to one of the trays 801, 802, and 808 without passing through the printer. As a result, the sheet set in the inserter 803 can be inserted (inserted) between the sheets fed into the finisher 205. On the tray 809 of the inserter 803, sheets to be inserted are set face-up by the user, and are fed into the finisher unit 205 in order from the uppermost sheet by the pickup roller 810. Accordingly, the sheet from the inserter 803 is conveyed to the trays 801 and 802 as it is, and is discharged in a face-down state. When sending the recording paper to the saddle stitcher 807, the recording paper is once sent to the puncher 806 side, and then switched back and sent to match the face direction.

[External controller 104]
Next, the configuration of the external controller 104 and the operation during printing will be described with reference to FIG. The external controller 104 includes a CPU 901, a work memory 902, an image processing unit 903, an image memory 904, a mass storage device (hereinafter referred to as HDD) 905, an external network I / F unit 906, and an internal network I / F unit 907.

  The image processing unit 903 is connected to the image forming apparatus 101 via the video cable 103. The image processing unit 903 is also connected to the image memory 904. The external network I / F unit 906 is connected to the external network 105, and the internal network I / F unit 907 is connected to the internal network 102. The CPU 901 operates according to a program stored in the HDD 905, communicates with the computer terminal 106 and the image forming apparatus 101 via the network I / F units 906 and 907, and executes predetermined processing.

  Next, an operation (control of the CPU 901) in the external controller 104 when printing a document file on the computer terminal 106 will be described. The external controller 104 receives the PDL data transmitted from the computer terminal 106 using the external network I / F unit 906 via the external network 105. The PDL data received by the external network I / F unit 906 is stored in the HDD 905. Next, the CUP 901 uses the image processing unit 903 to develop the PDL data stored in the HDD 905 as an image on the image memory 904. Then, the image processing unit 903 transfers the developed image to the image forming apparatus 101 via the video cable 103. At this time, the CPU 901 transmits the print attribute information of the developed image to the image forming apparatus 101 via the internal network I / F unit 907 and the internal network 102. Note that the print attribute information includes information such as the size of the developed image, settings at the time of printing performed by the image forming apparatus 101 included in the PDL data, and the like. Thus, based on the print attribute information transmitted from the external controller 104 and the developed image, the image forming apparatus 101 prints the image on the sheet.

[Printer Driver]
Next, a printer driver that operates on the computer terminal 106 will be described with reference to FIGS. 10 and 11.

  FIG. 10 shows an example of a printer driver screen displayed when printing a document created on the computer terminal 106 as a printer driver screen 1001. A printer driver screen 1001 is displayed on the computer terminal 106. In the printer driver screen 1001, the printer selected as the output destination is shown in the output destination field 1002. The output destination field 1002 is a pull-down menu, and another printer can be selected. In the example of FIG. 10, the image forming apparatus 101 is selected as the output destination printer.

  A print range setting 1003 for setting a print range of a document can set whether to print all pages of a document or a specific page. The printer driver screen 1001 is provided with an OK key 1004 and a cancel key 1005. When an OK key 1004 is pressed, the document page set in the print range setting 1003 is converted into PDL data. The converted PDL data is sent to the external controller 104 connected to the image forming apparatus 101 together with detailed settings at the time of printing described later. When the cancel key 1005 is pressed, the printer driver screen 1001 is closed without being converted into PDL data and transmitted.

  The printer driver screen 1001 is provided with a detailed setting key 1006. When the detailed setting key 1006 is pressed, a print detailed setting screen 1101 as shown in FIG. 11 is displayed. On the print detail setting screen 1101, processing that can be performed in the selected image forming apparatus and external controller is set. That is, by using the print detail setting screen 1101, it is possible to set each function that can be processed by the image forming apparatus 101 and the external controller 104. Items that can be set on the print detail setting screen 1101 include the number of copies, paper size, layout, and the like exemplified in the setting item 1102. Further, setting of whether or not to perform confidential printing, which will be described later, and setting of a password at the time of confidential printing can be performed on the print detailed setting screen 1101 by using the fields 1103 and 1104. The user can make a desired setting on the print detail setting screen 1101.

  When an OK key 1105 is pressed on the print detail setting screen 1101, the print detail setting screen 1101 is closed. Then, returning to the printer driver screen 1001 shown in FIG. 10, the contents set on the print detail setting screen 1101 are held in the computer terminal 106. When the cancel key 1106 is pressed, the screen returns to the printer driver screen 1001, but the setting content on the print detailed setting screen 1101 is not reflected on the computer terminal 106.

[Print Status Screen]
Next, a print status screen by the operation unit 203 of the image forming apparatus 101 will be described with reference to FIG. A print status screen 1201 is a screen displayed when the system status key 405 on the LCD display screen 401 of the operation unit 203 is pressed.

  The following items are displayed on the print status screen 1201. <Job type 1202> Indicates a job type such as copy or PDL print. In the case of a job for which a confidential print setting has been made, “confidential print” is displayed as indicated by 1203 in the job type. <Reception Time 1204> Indicates the time at which the job is submitted to the image forming apparatus 101 for each print job. <Job name 1205> Indicates the name of the job. In the case of a PDL print job, the document file name at the computer terminal 106 of the document instructed to be printed by the printer driver is displayed. <Status 1206> The status of job processing in the image forming apparatus 101 is shown.

  The print status screen 1201 includes a cancel key 1207 for canceling a designated job, and a password input key 1208 for displaying a screen for inputting a password at the start of printing in the case of confidential printing. A close key 1209 is a key for closing the print status screen 1201 and returning the display on the LCD display screen 401 to the standard screen of FIG.

[Secure Print]
Next, confidential printing in the present embodiment will be described with reference to FIGS.

  First, the user instructs printing of a desired document file using a printer driver screen 1001 provided by a printer driver operating on the computer terminal 106. At this time, as described above, the user can perform desired settings on the print detail setting screen 1101. When an OK key 1004 on the printer driver screen 1001 is pressed, the computer terminal 106 transmits PDL data to the external controller 104 as a print job together with detailed settings. The external controller 104 receives a print job (including PDL data and detailed setting information) transmitted from the computer terminal 106.

  The external controller 104 that has received the print job interprets the received print job. Then, the detailed setting information at the time of printing of the print job set on the print detailed setting screen 1101 and the image data obtained by expanding the PDL data of the print job into an image are stored in the in-device controller 204 of the image forming apparatus 101. Send to.

  Next, the operation of the image forming apparatus 101 will be described. The processing of each step shown in FIG. 13 is executed by the in-device controller 204 of the image forming apparatus 101. More specifically, for example, the CPU 301 of the in-device controller 204 loads the control program stored in the HDD 305 to the work memory 302 and executes it, thereby realizing the processing of FIG.

  When the image forming apparatus 101 receives the detailed setting information of the print job from the external controller 104 in step S1301, the image forming apparatus 101 analyzes the detailed setting information in step S1302. In step S1303, based on the result of this analysis, it is determined whether the image data of the print job transmitted from the external controller 104 is a job that should be protected by confidential printing. If it is determined that the print is not a confidential print (not a job to be protected), the process advances from step S1303 to step S1304. In step S 1304, an image obtained by sequentially interpreting and developing PDL data is received from the external controller 104 and printed by the printer unit 202. If there is another job that is already being printed in the in-device controller 204, it is registered in the print queue prepared in the HDD 305.

  On the other hand, if it is determined in step S1303 that the input job is a confidential print (job to be protected), the process advances to step S1305. In step S 1305, the in-device controller 204 holds the detailed setting information of the job in the HDD 305, receives images obtained by sequentially interpreting and developing the PDL data from the external controller 104, and holds them in the HDD 305. As a result, the HDD 305 stores jobs to be protected. That is, information such as the paper size and paper type of each page is held together with the image of each page. The processing in step S1305 is performed until all pages of the input job are accumulated in the HDD 305 (step S1306). In the case of a confidential print job, printing of the job cannot be started until the image of all pages has been received and stored in the HDD 305. Accordingly, on the print status screen, as shown in FIG. 14, the password input key 1401 for starting printing of the corresponding confidential print job is grayed out and cannot be selected.

  When all pages of the entered confidential print job are stored in HDD 305, the process proceeds from step S1306 to step S1307. In step S1307, the non-selectable state (gray-out state) of the password input key 1401 is canceled, and a print start instruction by password input is made possible. As a result, as shown in FIG. 15, the print status screen is displayed in a state where the password input key 1501 can be operated. Note that the up / down key 1502 may be used to switch a selected job in the job list so that a desired confidential print job can be selected. In this way, when a plurality of confidential print jobs are input and stored in the HDD 305, a desired confidential print job can be selected.

  When the password input key 1501 is pressed, the process advances from step S1307 to step S1308. In step S <b> 1308, the image forming apparatus 101 checks whether a user recovery operation due to paper shortage occurs during printing when printing the job.

  In step S <b> 1305, the in-device controller 204 stores, in the HDD 305, print information 1601 as illustrated in FIG. 16 such as the print settings on the print detail setting screen 1101, the paper size used during printing, the paper type, and the number of sheets. For example, the print information 1601 holds information on items indicated by 1602 to 1610. In this example, items 1602 to 1610 include “number of copies”, “paper size and number of copies per copy”, “paper type”, “discharge tray”, “discharge mode”, “stapler mode”, “ “Color mode”, “Secure print setting”, and “Secure print password”. Reference numeral 1611 denotes each item (attribute) related to printing, and 1612 denotes a value for each item. Reference numeral 1613 denotes an explanation of the meaning of each value described for explaining the present embodiment, and it is not necessary to be included in the actual print information 1601.

  The job shown in the print information 1601 in FIG. 16 uses 20 sheets of A4 plain paper (10 sheets × 2 copies), 30 sheets of A3 plain paper (15 sheets × 2 copies), and prints the results on tray 2. Eject paper. Further, stapling is performed at one place on the upper left, and color printing is performed. The in-device controller 204 checks the possibility of a recovery operation based on such print information 1601. For example, the following check is performed.

(1) When “Color” is set in the color mode 1607, it is checked whether or not each color toner (C, M, Y, K) for printing in color exists in the image forming apparatus 101. When the color mode 1607 is “monochrome”, it is checked whether there is black (K) toner. For example, when the toner to be checked is in the remaining amount warning state, it is determined that there is a possibility that a recovery operation may occur.
(2) The number of sheets required for printing is determined from the contents of “sheet size and number of copies per sheet” 1602 and “sheet type” 1603, and it is checked whether these exist in the image forming apparatus 101. In the example of FIG. 16, the check is “whether there are 20 or more A4 plain papers” or “30 or more A3 plain papers”.
(3) When the use of the stapler is instructed in the “stapler mode” 1607, it is checked whether there is a staple for the stapler.
(4) From the setting items of “number of copies” 1602, “paper size and number of copies per sheet” 1603, and “paper type” 1604, check whether the upper limit of stacking of the output tray (tray 2) is reached during printing To do.

  For example, in order to determine whether or not the number of sheets necessary for printing is present in the sheet cassette, the image forming apparatus 101 needs to detect the number of sheets present in the sheet cassette. Presence / absence of the paper can be detected, for example, by arranging a light emitting / receiving sensor such that the optical axis direction matches the paper stacking direction in the sheet cassette. Furthermore, for example, by arranging a plurality of light emitting / receiving sensors whose optical axis directions are perpendicular to the sheet stacking direction in both directions, the number of sheets in the sheet cassette can be roughly detected. . For example, by arranging four light emitting / receiving sensors in the stacking direction, the remaining amount of paper is “˜20%”, “20% -40%”, “40% -60%”, “60% -80%”, “80% It can be detected as “˜”. Since the number of sheets in the 100% state in the sheet cassette is known, with such a configuration, the number of sheets in the sheet cassette can be recognized roughly, and the determination of (2) above can be realized.

  Alternatively, the following configuration can be given as an example of another method for determining the number of sheets in the sheet cassette. It is assumed that the number of sheets when the sheet cassette is full is set in advance, and the sheets are full when the sheets are supplied. In the subsequent printing operation, the number of fed sheets is counted and subtracted from the full number of sheets to obtain the number of sheets in the sheet cassette. According to such a configuration, it is possible to detect the exact number of sheets in the sheet cassette by the operation of filling up the sheets in the sheet cassette when the sheets are supplied. Also, in (3), it is obvious that the remaining number of staples in the stapler may be recognized and checked for the required number of needles.

  If it is determined as a result of the above check in step S1308 that a user recovery operation due to, for example, paper shortage occurs during printing, the process advances to step S1309. In step S1309, as shown in FIG. 17, a password input screen 1701 including a message indicating that a shortage has occurred and displaying the contents is displayed. If a password is entered on password input screen 1701 and OK key 1702 is pressed, the process proceeds from step S1310 to step S1311. This is a case where the user has selected to start printing even if there is a risk that a recovery operation will occur. On the other hand, when the cancel key 1703 is pressed on the password input screen 1701, the process returns from step S1310 to step S1307. That is, it is possible to start again from the job selection. Accordingly, when the user does not want to perform the recovery operation during the printing of the confidential print, the recovery operation predicted by the warning display can be performed before starting the printing by selecting the cancel key 1703.

  On the other hand, if it is determined in step S1308 that the user's recovery operation does not occur due to paper shortage during printing, the process proceeds to step S1312. In step S1312, a password input screen 1801 without a warning display is displayed as shown in FIG. When a password is input on the password input screen 1801 and the OK key 1802 is pressed, the process proceeds from step S1310 to step S1311.

  In step S1311, password verification is performed. That is, it is determined whether the password input on the password input screen 1701 or 1801 matches the password set on the print detail setting screen 1101 (the password stored in the “confidential print password” 1610 of the print information 1601). If it is determined that they match, the process advances from step S1311 to step S1304, and printing of the job is executed. On the other hand, if it is determined in step S1311 that the passwords do not match, the process returns to step S1308, and enters a password input standby state in step S1309 or S1312.

  As described above, since the presence / absence of resources necessary for secure printing is confirmed before printing is started, the occurrence of a “paper out” error or the like after printing is started is reduced. For this reason, it is possible to reduce the occurrence of a situation in which the user leaves the place for error recovery during execution of confidential printing. As a result, it is possible to reduce the risk that a third party can see the output while the user is absent, and maintain confidentiality. Furthermore, it is possible to prevent a situation where the time required for printing the confidential print becomes long due to error recovery such as “no paper” after the start of printing. In other words, error recovery work during confidential printing can be eliminated more reliably, and the printing time can be minimized. For this reason, it is possible to further reduce the risk that a third party can see the printed matter. As described above, confidentiality at the time of secure printing can be enhanced.

  In the above-described embodiment, in the job example shown in FIG. 16, the resources necessary for job processing, that is, whether there are 20 or more A4 plain papers, 30 or more A3 plain papers, It was checked whether there was a needle or CMYK toner. Here, in order to perform a check regarding paper, it is necessary to register the size and type of the paper stored in each sheet cassette. Such registration may be recorded in, for example, the HDD 305 in a table format in which the sheet tray and the size and type of the stored paper are associated with each other. In the above embodiment, the number of sheets stored in the sheet cassette can be detected. However, when only a mechanism for detecting the presence or absence of paper in the sheet cassette is provided, the presence or absence of resources necessary for the job is determined based on whether or not the paper used for printing exists in the sheet cassette. . Similarly, if it is possible to detect the number of remaining needles in the stapler 805, the presence or absence of resources necessary for the job is determined by detecting whether the staples of the stapler are left for the number of copies specified in the job. become.

Second Embodiment
In the second embodiment, in the confidential printing in the printing system of the first embodiment, the corresponding job is started as soon as possible in order to improve the accuracy of the check (step S1308) of whether or not a recovery operation occurs. More specifically, the printing accuracy of the check in step S1308 is relatively reduced by reducing printing by other jobs as much as possible from the time when the check is made in step S1308, and suppressing resource fluctuations due to processing of other jobs. To improve. The second embodiment will be described below using the flowchart of FIG. Note that the processing shown in FIG. 19 is replaced with the processing of steps S1307 to S1311 (FIG. 13) of the first embodiment.

  If the password input key 1501 is pressed in step S1307, it is checked in step S1901 whether another confidential print job for which confidential printing has been started exists. If another confidential print job is being printed, the process advances to step S1902 to display a screen 2001 indicating that another confidential print is being performed, as shown in FIG. When the close key 2002 is pressed, the process returns from step S1902 to step S1307. That is, the screen 2001 is closed and the screen returns to the print status screen as shown in FIG. Therefore, when another confidential print is being executed, the confidential print is not started after the password is input for the job.

  On the other hand, if it is determined in step S1901 that no other confidential printing has been performed, the processes in steps S1308 to S1312 are performed. The processing from step S1308 to step S1312 is as described in the first embodiment.

  If the password is verified in step S1311, and the password is determined to be OK, the process advances to step S1903. In step S1903, the image forming apparatus 101 compares the reception time of another job on the print status screen 1201 with the reception time of the confidential print job. If the reception time of the confidential print job is earlier than the reception time of the other jobs waiting for printing, priority is given to the print order so that printing is performed first. FIG. 21 is a diagram showing an example in which the confidential print is given priority to be printed before the “circulation” and “meeting material” jobs that have a reception time later than the confidential print and are in a waiting state. It is.

  With the above processing, it is possible to prevent the state of the resource from fluctuating, such as being interrupted by another print job and consuming paper. As a result, the accuracy of checking whether or not the user's recovery operation occurs in step S1308 is increased.

  Note that the reason for checking whether or not another confidential print is printed in step S1901 is that since the confidential print has priority, only the confidential print is performed and normal printing is not performed. Is to prevent. In addition, when the confidential prints are continued, in the print instructed to start printing later, another confidential print is processed from the time of the check in step S1308, and paper and the like are consumed. That is, the check accuracy in step S1308 is lowered. Therefore, such a situation can be prevented by making it impossible to input the password when another confidential print is being printed in step S1901.

  If it is possible to detect the number of sheets stored in the sheet cassette, it is determined whether sheets necessary for execution of confidential printing remain as a result of consumption of sheets by a job executed before execution of confidential printing. Judgment can be made. In this way, for resources that can be predicted after the consumption of resources by a job executed before the execution of confidential printing, refer to the remaining state to determine whether there are resources required for the confidential printing. It is preferable to make a determination. As a result, it is possible to make a determination in consideration of the influence on the remaining state of the resource by the job executed before executing the confidential print, and the operability and confidentiality can be improved.

  This point is common to all the embodiments. In other words, the configuration of the present embodiment is an example of a print resource necessary for completing the printing of the job to be processed. For example, as many print sheets as are necessary for completing the printing of the job to be processed are used. Assumed. Further, for example, the toner necessary for completing the printing of the job to be printed is also an example of the print resource by the control unit (for example, the in-device controller 204 or the external controller 104) as an example of the print resource. This is a print resource to be checked in the job control to be executed. Further, for example, sheet processing members (sheet binding members) such as staples necessary for completing printing of a job to be printed for which a stapling execution request has been made complete printing of the job to be processed. As an example of printing resources necessary for the control, the control target is used. The image forming apparatus 101 of the present embodiment is applicable as long as at least one of such various print resources is configured to deal with the print resource. In addition, the method for confirming whether or not the image forming apparatus 101 has the print resources necessary for completing the printing of the job to be processed (whether or not they are prepared) has been described above. The present invention is not limited to such an example, and any method may be adopted.

  For example, the operator himself / herself provides information remaining in the print resource information and the like via the operation unit 203 provided in the image forming apparatus 101 itself, which corresponds to an example of a user interface unit (hereinafter referred to as a UI unit) of the present embodiment. A configuration in which manual input is performed via the operation unit may be used. Alternatively, the operator may manually input the information remaining amount information of the print resource via the operation unit via the UI unit (including a display device) of the host computer. An example of this configuration is as follows. For example, the control unit specifies information that enables the control unit to specify what print resources are required to complete printing of the secure print job to be processed, and how much the print resources are required. Information to be made available is input to the operator via the UI unit. In addition, information that enables the control unit to specify what resources are currently set in the image forming apparatus 101 and how much the resources are set can be specified by the control unit. Information and the like are also input by the user via the UI unit. And based on these information, the control part of the said embodiment performs the said confirmation. Then, the control unit executes various job controls described in this embodiment. The present invention can also include such a configuration. In this way, as long as the configuration can cope with the problems assumed in the background art, a specific confirmation method is not limited and any configuration may be used.

<Third Embodiment>
In the confidential printing in the system according to the first embodiment, if it is determined in step S1308 that a user recovery operation occurs, the password input screen may not be displayed and the process may not be started. In this case, for example, it is preferable to display a warning-only screen (not including the password input field) as shown in FIG. 22 in step S1309. Then, after a warning-only screen as shown in FIG. 22 is displayed and the close key 2202 is pressed, the process returns from step S1309 to S1307. In this way, even when a password input start instruction is received, if it is determined that a recovery operation will occur, the start of printing is prohibited. Then, after a warning-only screen 2201 as shown in FIG. 22 is displayed, if the close key 2202 is pressed, the process returns from step S1309 to S1307. In this way, even when a password input start instruction is received, if it is determined that a recovery operation will occur, the start of printing is prohibited.

  The job control that can be commonly applied to all the embodiments of the present embodiment including the third embodiment will be described below. The control unit (for example, the in-device controller 204 or the external controller 104) included in the system according to the present embodiment copes with the problems assumed in the background art, and in order to achieve the above effect, the print system 100 (image) according to the present embodiment. The forming apparatus 101 itself is controlled as follows. Note that the image forming apparatus 101 is also called a printing apparatus as a matter that can be said in common in all the embodiments. The print system 100 including the image forming apparatus 101 is also referred to as a print system.

  The control unit of the present embodiment (for example, the above-described in-device controller 204 or the external controller 104 corresponds to this) is a secure corresponding to an example of a first type print job that requires an authentication process before printing. The print job is controlled to be accepted by the image forming apparatus 101. In addition, the image forming apparatus 101 controls to accept a non-secure print job corresponding to an example of a second type print job that does not require authentication processing before printing. For the image forming apparatus 101 capable of receiving a plurality of types of print jobs including the first type job and the second type job, the control unit executes, for example, the following control.

  For example, the control unit prints the job when the image forming apparatus 101 does not have the resources necessary for completing the printing of the job to be processed (not prepared or prepared). It is not started by the image forming apparatus 101 (print start is prohibited). On the other hand, when the image forming apparatus 101 has the resources necessary to complete the printing of the job to be processed, the image forming apparatus 101 starts printing the job (permits printing start). Such control according to the case (also referred to as a specific job control sequence) is controlled by the control unit so that the image forming apparatus 101 can execute the specific operation. On the premise of such a configuration, the control unit determines that the job to be processed is the first type print job of the first type print job and the second type print job. A specific operation is controlled to be executable by the image forming apparatus 101.

Further, on the premise of such a configuration, the control unit also controls at what timing the specific operation is executed for what job. As an example of this, the control unit
(1) Print data of the first type print job is stored in a storage unit such as an HDD as described above, and
(2) A confirmation process related to whether or not the image forming apparatus 101 has a resource necessary for completing the printing of the job to be processed is one of the first type print job and the second type print job. After being made for the first type of print job,
The specific operation is executed by the image forming apparatus 101.

  By adopting the configuration as described above, it is possible to cope with the problems assumed in the background art described above. In addition, since the configuration of the present embodiment maintains confidentiality, it affects other jobs and may cause another new problem such as a decrease in job productivity of the entire system. This is also configured so that it can be prevented in advance. As an example of this, the control unit (for example, the in-device controller 204 or an external controller described later corresponds to this) executes the following job control.

  As described above, the control unit performs the specific operation when the job to be processed is the first type print job of the first type print job and the second type print job. And executed by the image forming apparatus 101. While executing such control, the control unit executes control different from the control for the second type print job (non-secure print job that does not require authentication processing before starting printing). If the specific operation executed for the first type print job is called a first print control sequence, the specific operation executed for the second type print job is the second print job. It is defined as a control sequence. As an example of this control, when the job to be processed is the above-described second type print job, the control unit may execute the job even if the resources necessary for completing the printing of the job are not available in the image forming apparatus 101. The image forming apparatus 101 is allowed to start printing the job. In other words, for the first type print job as described above, the print resources are secured in advance so that printing of the job is not interrupted from the start of printing of the job to the completion of printing. In addition, printing is started through an authentication process. This prohibits the occurrence of a situation in which the print resource of the job disappears in the middle from the start of printing of the first type print job to the end of printing. On the other hand, for the second type print job as described above, regardless of whether printing of the job is interrupted between the start of printing of the job and the completion of printing, in other words, the print resource is formed in advance. Even if the apparatus 101 does not secure the request, the printing start is permitted. In other words, the second type print job permits a situation in which the print resource of the job disappears halfway between the start of printing and the end of printing.

  Such selection control is a mechanism that is configured depending on which point is emphasized. For example, in the latter control, although printing may stop in the middle, the timing from the acceptance of a job to the start of printing of the first page of the job (so-called first copy on time, referred to as FCOT for short) Shorter than the former control. The reason is that printing is started without checking the resources necessary to complete all printing of the job. As we delve further, the resources needed to complete all printing for a job are, in other words, the printing of all the pages of print data contained in the job with the specified number of copies. This is a printing resource corresponding to the amount necessary for the printing. In order for the control unit to check the print resources necessary for the job, the print data of all pages of the job to be processed is stored in the storage unit such as the HDD. For the first time, the control unit can be specified. For example, when PDL data for all pages of print data such as PDL from a host computer is received and bitmap-expanded and stored in the memory of the apparatus, the total number of pages of the job can be specified for the first time. There is an image forming apparatus configured as described above. In addition, there is an image forming apparatus having a so-called copy function in which a document from the scanner unit 201 is printed by a printer unit 202. In such an image forming apparatus, the total number of pages of the document included in the job of the copy function is obtained by reading all document bundles via the ADF provided in the scanner unit 201 and storing the data of all pages in the HDD. It is assumed that the configuration can be specified only when the is stored. Therefore, in the image forming apparatus having a configuration in which the total number of print pages of the job can be specified when the data of all pages is stored in the memory in this way, the first print control sequence is uniformly performed. If it is executed, there is a concern about the FCOT of the second type job. Therefore, the control unit executes the second print control sequence for the second type print job.

  The reason why the first type print job may be processed in the first print control sequence is, for example, as follows. As described above, the first type job is a secure print job. In the first place, the secure print job is a job in which the image forming apparatus 101 does not execute control that automatically starts printing in the printer unit even when the image forming apparatus 101 receives the job. In other words, this is a job that is permitted to start printing only after authentication data is input by the user of the job via the UI unit of the image forming apparatus 101. Accordingly, there is an effect that printing can be started when the user hits the front of the image forming apparatus 101 and can be held in the memory of the image forming apparatus 101 until then. As described above, the secure print job is stored in a memory such as an HDD without starting at least printing until a user who desires to start printing inputs a print start request for the job via the UI unit of the image forming apparatus 101. Thus, the print data of the job is held. In this way, a secure print job that waits for printing while holding print data in a memory such as an HDD does not significantly affect the printing time. Before the user visits the image forming apparatus 101 from the host and inputs a print start request for the job via the UI unit of the apparatus 101, the print data of the secure print job is stored in all pages, HDD, etc. This is because the data can be stored in the memory. Therefore, the above-described effects can be achieved without the problems related to the FCOT as described above. Such a selective control considering the nature of the job is configured to be executable by the control unit. If this configuration is described in other words, the control unit controls as follows. That is, when a print start request for the first type print job is received from the user via the UI unit included in the image forming apparatus 101, the image forming apparatus 101 can execute the specific operation. However, if a print start request for the first type print job is not received from the user via the UI unit included in the image forming apparatus 101, the resources necessary to complete the printing of the job are the image forming apparatus. The printing of the job is not started regardless of whether or not it is aligned with 101.

  An example of the characteristics and effects of the configurations of the first to third embodiments described above will be described with more specific examples. Therefore, the following configuration, which is different from the first to third embodiments, will be examined.

  For example, after a printing process for a confidential print job is started by the image forming apparatus 101, when an interruption factor occurs in the job, the image forming apparatus 101 interrupts the printing process for the job. Then, the image forming apparatus 101 is configured to be able to resume the print processing of the interrupted job by, for example, an instruction from the operation unit 203 included in the image forming apparatus 101. Consider such a configuration.

  In this configuration, if it is possible for a third party not to be a proper user to resume the print processing of the job, the third party can view the printed matter of the confidential print job output after the resume of the print processing. It is assumed that

  Therefore, for example, the following configuration is examined in order to solve the above-described problems.

  For example, when resuming printing of an interrupted confidential print job, a password input screen is displayed and the password is input. Thereby, it is considered that the possibility that the printing process of the interrupted confidential print job can be resumed by a third party other than the proper user can be reduced. Therefore, it is considered that the possibility that the printed matter output after the print processing of the job is resumed can be reduced by a third party.

  However, even in such a configuration, it is considered that the printed matter that has been output when the printing process is interrupted already exists on the discharge tray and may be seen by a third party. As a countermeasure for this problem, the user removes the printed matter of the confidential print job output to the paper discharge tray. For example, it is considered that confidentiality can be maintained by such a method.

  However, it is expected that problems that are difficult to deal with remain even with such a method. For example, if a finishing process such as stapling is specified for a confidential print job, the following problems can be expected if the printed material of the job that has been output when the printing process is interrupted is removed in the middle . In other words, in this case, it is expected that the finishing process cannot be performed with a bundle of the printed matter that has been output for the job and the remaining printed matter that has not yet been output for the job. In this way, it is expected that there remains a problem that a desired finishing process is not performed on the job.

  On the other hand, the configuration as in the first to third embodiments reduces the possibility that printing of a confidential print job will be interrupted due to the occurrence of an interruption factor, and makes the printed matter of the job available to a third party. The possibility of being seen can be reduced. Further, in order to reduce the possibility that a printed matter of a confidential print job can be seen by a third party, it is possible to cope with a new problem that a desired finishing process is not performed on the job.

  In addition, it is possible to prevent the occurrence of another new problem that would affect the productivity of other jobs due to the desire to deal with these problems.

  According to the configuration of the first embodiment to the third embodiment, it is possible to reduce the possibility that the printed matter of the confidential print job can be seen by a third party. In addition, it is possible to cope with a new problem that a desired finishing process is not performed on a confidential print job. In addition, since it is desired to deal with these problems, it is possible to prevent the occurrence of another new problem that affects the productivity of other jobs.

  A configuration that can cope with such a problem is an example of the feature of the present application.

  Furthermore, an example of the characteristics and effects of the configurations of the first to third embodiments described above will be described using other specific examples. Therefore, the following configuration, which is different from the first to third embodiments, will be examined.

  For example, the image forming apparatus 101 accepts print setting information related to the print job together with PDL data of the print job requested to be printed, and stores the accepted PDL data and print setting information in the HDD. Next, the image forming apparatus 101 determines whether the print job is a confidential print job from the print setting information. If the image forming apparatus 101 determines that the print job is a confidential print job, the image forming apparatus 101 predicts whether or not an interruption factor occurs in the print job before starting the print processing of the print job. . Then, when the image forming apparatus 101 predicts that an interruption factor will occur, the image forming apparatus 101 prohibits starting printing of the print job. Thereafter, after receiving an instruction to start printing for the print job, the image forming apparatus 101 performs processing for expanding the PDL data of the print job into image data and prints the image. Consider such a configuration.

  With such a configuration, when an instruction to start printing is given to a print job in which printing start is prohibited, the first page is actually printed after the instruction to start printing is given. It is assumed that it will take some time to start. This is because it takes time to develop the PDL data of the print job into image data from when the print start instruction is given to the print job until printing of the first page is started. . Further, it is necessary to have a time for predicting whether or not an interruption factor occurs in the print job.

  On the other hand, as in the first to third embodiments described above, the image forming apparatus 101 converts the PDL data of the job into image data in advance in the HDD, for example, when prohibiting the start of printing of a confidential print job. Keep the unfolded one. Further, it is configured to predict whether or not an interruption factor will occur in the confidential print job until an instruction to start printing is issued. Thus, when resuming printing of a print job for which printing start is prohibited, it is possible to cope with a problem that it takes time until printing of the first page is started after an instruction to start printing is issued.

  For example, when the image forming apparatus 101 does not have the resources necessary for completing the printing of the confidential print job, the image forming apparatus 101 predicts that an interruption factor occurs in the confidential print job. Therefore, an example of a method for determining whether or not the image forming apparatus 101 has resources necessary for completing the printing of the confidential print job will be described below.

  First, the image forming apparatus 101 grasps resources necessary for completing the printing of the confidential print job. Next, based on the grasped necessary resources, the image forming apparatus 101 determines whether the image forming apparatus 101 has the necessary resources for completing the printing. Each of these methods will be described more specifically.

  First, a method for the image forming apparatus 101 to grasp the amount of resources necessary for completing the printing of the confidential print job will be described.

  For example, the image forming apparatus 101 acquires the number of pages necessary to complete printing of the job from the developed image data. Then, the image forming apparatus 101 uses the information regarding the number of pages and the print layout and single-sided / double-sided printing settings included in the detailed setting information of the job to determine the number of sheets necessary to complete the printing of the job. Calculate the number of sheets.

  For example, the image forming apparatus 101 recognizes that there are 80 pages of image data as a result of expanding the PDL data of the accepted job into image data. When 2-in-1 printing is set as the print setting information for the job, the image forming apparatus 101 ejects 40 sheets (80 pages / 2) to complete the printing of the job. And calculate. On the other hand, when 2in1 printing and duplex printing are set as the print setting information of the job, the image forming apparatus 101 discharges 20 sheets (80 pages / 2/2). And calculate. That is, the image forming apparatus 101 expands PDL data into image data, acquires the total number of pages of the job, and divides the number of pages by the number of pages to be printed per sheet, thereby The number of sheets necessary for completing the execution can be obtained.

  In this way, the image forming apparatus 101 grasps the amount of resources necessary for completing the printing of the confidential print job.

  Next, the image forming apparatus 101 predicts whether or not an interruption factor occurs during the printing process of the confidential print job to be processed based on the grasped necessary resources. As an example of a method for predicting the occurrence of the interruption factor, a method will be described in which the image forming apparatus 101 determines whether the image forming apparatus 101 has the necessary resources.

  For example, the image forming apparatus 101 determines whether there is a sheet in the sheet tray necessary for completing the printing of the confidential print job to be processed. Therefore, the image forming apparatus 101 needs to hold information on the number of sheets present on the sheet tray.

  First, a method in which the image forming apparatus 101 holds information on the number of sheets will be described. For example, when the image forming apparatus 101 detects that the sheet tray is replenished with a sheet by a sensor provided in the sheet tray, the image forming apparatus 101 determines that the sheet is full. For example, when the image forming apparatus 101 detects that a sheet tray that can store 500 sheets is replenished, the image forming apparatus 101 determines that there are 500 sheets in the sheet tray. The image forming apparatus 101 stores information in the HDD that 500 sheets are present in the sheet tray.

  After that, when outputting the sheet, the image forming apparatus 101 counts the number of output printing sheets by, for example, a counter, and subtracts the counted value from the number of sheets stored in the HDD. For example, when the image forming apparatus counts that 20 sheets have been discharged, 20 is subtracted from the number of sheets 500 existing in the sheet tray, and the remaining 480 sheets exist in the sheet tray. Is stored in the HDD.

  In this way, the image forming apparatus 101 grasps information on the number of sheets present on the sheet tray.

  Then, the image forming apparatus 101 compares the number of sheets necessary to complete the execution of the confidential print job to be processed with the number of sheets existing on the sheet tray. The image forming apparatus 101 determines that sufficient sheets are present in the sheet tray when the number of sheets necessary to complete the execution of the confidential print job to be processed is larger than the number of sheets present in the sheet tray. To do.

  In this way, the image forming apparatus 101 according to the first to third embodiments determines whether the resource is in the image forming apparatus.

  In addition, when the received job is a confidential print job, the image forming apparatus 101 according to the first to third embodiments starts printing the job until the job is selected as a processing target and a password is input. I won't let you. Therefore, when the received job is a confidential print job, the image forming apparatus performs the following processing after the job is received and before the password is input. The image forming apparatus 101 performs processing for expanding PDL data into image data. Further, the image forming apparatus 101 performs a process for confirming whether or not there is a resource necessary for completing the printing of the job, from when the job is received until the password is input and printing is started.

  As a result, the image forming apparatus 101 described in the first to third embodiments does not need to perform these processes after the user gives an instruction to start printing the job, and outputs the first page of the job. There is no problem that it takes time until the image forming apparatus 101 starts.

  As described above, in the configuration of the first to third embodiments, when the printing of a print job whose printing start is prohibited is resumed, the first page is printed after the user gives an instruction to start printing. It is possible to cope with the problem that it takes time to start.

  A configuration that can cope with such a problem is an example of the feature of the present application.

  Note that the resources necessary for completing the confidential print job described in each of the embodiments described above are from the start of the print processing of the job to the completion of the print processing of the job. A resource used in printing. Therefore, for example, when the image forming apparatus 101 does not have the resources necessary to complete the confidential print job, the image forming apparatus 101 starts printing the job and completes printing the job. The forming apparatus 101 runs out of resources, and the printing process is interrupted. On the other hand, if the image forming apparatus 101 has resources necessary for completing the confidential print job, the job can be printed without being interrupted during the printing process of the job.

  Since the characteristics and productivity of each job of a plurality of types of jobs as described above are taken into consideration, the above control is configured to be executed in this embodiment. However, regardless of whether the job to be processed is a first type print job or a second type print job, the control unit controls the image forming apparatus to operate according to the first control sequence. The structure which controls 101 may be sufficient. Thereby, an effect such as simplification of the apparatus may be achieved. However, even in such a configuration, at least the problem relating to the secure print job is configured to be able to deal with.

<Other embodiments>
In each of the above embodiments, the print job is developed into an image by the external controller 104 and stored in the HDD of the image forming apparatus 101. However, the present invention is not limited to this. The image forming apparatus 101 may function as a printer, and the print job sent from the computer terminal 106 may be developed into an image by itself and stored in the HDD. In this case, the external controller 104 can be omitted.

  In the above embodiment, the confidential print job is held in the HDD in the form of a developed image. However, the present invention is not limited to this, and it may be held in the form of PDL data and detailed setting information transmitted from an external computer terminal. In this case, authentication is obtained with a password, and development into an image is performed at the stage of actual printing.

  Further, in the above embodiment, when it is determined that the resources necessary for executing the confidential print are insufficient, this is displayed before the password (authentication information) is input. However, if there is a shortage of resources, it is only necessary to be notified of this before the start of confidential printing, so it is sufficient to deal with the problem. It can also be configured as follows.

  In the present invention, the functions of the above-described embodiments are achieved by supplying a software program directly or remotely to a system or apparatus, and the computer of the system or apparatus reads and executes the supplied program code. Including the case. In this case, the supplied program is a program corresponding to the flowchart shown in the drawing in the embodiment.

  Accordingly, since the functions of the present invention are implemented by computer, the program code installed in the computer also implements the present invention. In other words, the present invention includes a computer program itself for realizing the functional processing of the present invention.

  In that case, as long as it has the function of a program, it may be in the form of object code, a program executed by an interpreter, script data supplied to the OS, or the like.

  Examples of the recording medium for supplying the program include the following. For example, floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card, ROM, DVD (DVD-ROM, DVD- R).

  As another program supply method, a client computer browser is used to connect to a homepage on the Internet, and the computer program of the present invention is downloaded from the homepage to a recording medium such as a hard disk. In this case, the downloaded program may be a compressed file including an automatic installation function. It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer is also included in the present invention.

  Further, the program of the present invention may be encrypted, stored in a storage medium such as a CD-ROM, and distributed to users. In this case, a user who has cleared a predetermined condition is allowed to download key information for decryption from a homepage via the Internet, execute an encrypted program using the key information, and install the program on the computer. You can also.

  In addition to the functions of the above-described embodiment being realized by the computer executing the read program, the embodiment of the embodiment is implemented in cooperation with an OS or the like running on the computer based on an instruction of the program. A function may be realized. In this case, the OS or the like performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

  Furthermore, the program read from the recording medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, so that part or all of the functions of the above-described embodiments are realized. May be. In this case, after a program is written in the function expansion board or function expansion unit, the CPU or the like provided in the function expansion board or function expansion unit performs part or all of the actual processing based on the instructions of the program.

Claims (11)

Receiving means for receiving print data generated by the printer driver;
When printing is started after all the received print data is expanded into image data, it is confirmed based on the image data after expansion that the resources necessary to complete the printing are available. When printing is started and printing is started before all the received print data is expanded into image data, the image can be printed without checking whether or not the resources necessary for completing the printing are available. Printing means to start; and
A printing system comprising:   The printing means confirms that the resources of the number of printing papers necessary for completing the printing specified by the developed image data are prepared in the printing system, and then the developed image. The printing system according to claim 1, wherein printing of an image based on the data is started.   The printing means is based on the developed image data after confirming that the printing system has the toner resources necessary for completing the printing specified from the developed image data. The printing system according to claim 1, wherein printing of an image is started.   The printing means starts printing after expanding all the received print data into image data, and if it is confirmed that the resources necessary to complete the printing are not available, printing is performed. The printing system according to any one of claims 1 to 3, wherein the printing system does not start.   In the case where printing is started after all the received print data is expanded into image data, and it is confirmed that the resources necessary for completing the printing are not prepared, a notification means for notifying a user is provided. The printing system according to any one of claims 1 to 4, further comprising:   The case where printing is started after all the received print data is expanded into image data is a case where a first type print job that requires a user operation to print the data received by the receiving unit is executed. The printing system according to claim 1, wherein the printing system is provided.   When print data relating to the first type print job is received by the receiving means, the storage means further expands the received print data into image data and stores the image data after the expansion,
  The printing system according to claim 6, wherein the printing unit starts printing an image based on the image data stored in the storage unit in response to receiving the user operation.   When printing is started before all the received print data is expanded into image data, a second type print job that does not require a user operation for printing the print data received by the receiving unit is executed. The printing system according to claim 1, wherein the printing system is a case.   Receiving means for receiving print data generated by the printer driver;
  When printing is started after all the received print data is expanded into image data, it is confirmed based on the image data after expansion that the resources necessary to complete the printing are available. When printing is started and printing is started before all the received print data is expanded into image data, the image can be printed without checking whether or not the resources necessary for completing the printing are available. Printing means to start; and
A printing apparatus comprising: A receiving step for receiving print data generated by the printer driver;
When printing is started after all the received print data is expanded into image data, it is confirmed based on the image data after expansion that the resources necessary to complete the printing are available. When printing is started and printing is started before all the received print data is expanded into image data, the image can be printed without checking whether or not the resources necessary for completing the printing are available. A printing step to begin;
A control method for a printing system, comprising:   On the computer,
  A receiving step for receiving print data generated by the printer driver;
  When printing is started after all the received print data is expanded into image data, it is confirmed based on the image data after expansion that the resources necessary to complete the printing are available. When printing is started and printing is started before all the received print data is expanded into image data, the image can be printed without checking whether or not the resources necessary for completing the printing are available. A printing step to begin;
A program for running

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