JP5910032B2 - Printing device - Google Patents

Description

  The present invention relates to a printing apparatus that performs manual duplex printing. More specifically, the present invention relates to a recovery printing technique when an error occurs during execution of manual duplex printing.

  2. Description of the Related Art Conventionally, in a printing apparatus, a control method (so-called manual double-sided printing) that performs double-sided printing by replacing a sheet as a recording medium by a user has been proposed. Specifically, in manual duplex printing, after printing one side of a sheet continuously, the user flips over the sheet bundle and resets it in the paper cassette, and prints the other side of the sheet continuously. Realizes double-sided printing of print data consisting of multiple pages.

  As a document disclosing manual duplex printing, there is, for example, Patent Document 1. In the printing apparatus disclosed in Patent Document 1, all print data sent in the order of page numbers is stored in the RAM of the apparatus in association with the page information, and the print data is read from the RAM in the order of printing and printed. When performing recovery printing, the print data of the page in error is read again from the RAM and printed.

JP 2009-274244 A

  However, the conventional printing apparatus described above has the following problems. That is, in the printing apparatus disclosed in Patent Document 1, in order to reprint a page in which an error occurs during the double-sided printing operation, at least double-sided printing data is not held in the RAM until the double-sided printing is completed. Must not. In recent years, printing apparatuses with a small memory capacity have been put into practical use in order to reduce costs, and it is difficult for such printing apparatuses to hold print data for recovery printing.

  The present invention has been made to solve the problems of the conventional printing apparatus described above. That is, the problem is to provide a printing apparatus that can be expected to perform recovery printing by manual duplex printing even when the memory capacity is small.

  In order to solve this problem, a printing apparatus is configured to sequentially print a first print page, which is one of an odd page and an even page of print data having a plurality of pages, on a first surface of the sheet, and discharge the print page. After waiting for resetting of a single-sided printed sheet whose first side is a printed sheet, a post-printed page which is the other of the odd-numbered page and the even-numbered page of the print data is transferred to the second side of the single-sided printed sheet. A printing unit that sequentially prints and discharges, an interruption unit that interrupts the printing operation of the printing unit when an error is detected during the printing operation of the first print page by the printing unit, and after the interruption by the interruption unit After the error is cleared, the printing operation of the page following the page to be interrupted, which is the page for which the printing operation was interrupted, is resumed, and after the printing operation is resumed, the job of the previous printing page is resumed. After completion of the process is characterized in that it comprises a recovery unit which acquires the print data of at least the interrupted page from the source of the print data, prints the print data acquired.

  The printing apparatus according to the present invention continuously prints the first printed page on one side of the sheet, then resets the printed sheet on one side, and continuously prints the printed page on the other side of the printed sheet on one side. By doing so, double-sided printing is realized, so-called manual double-sided printing is executed. When the printing apparatus of the present invention detects an error during the printing operation of the first print page and interrupts the printing operation, the printing operation of the page subsequent to the interruption target page is performed after the error is canceled. Let it resume. That is, the process of the subsequent page is started after overtaking the page to be interrupted. Further, after the printing operation is resumed, the print data of the page to be interrupted is acquired after the job of the first print page is completed, and the acquired print data is printed. The acquisition timing of the page to be interrupted may be after the resumption of the printing operation and after the completion of the job processing of the first printing page. For example, even when the printing operation of the last page of the first printing page is completed, It may be when the printing operation of the last page of the post-printing page is completed.

  That is, when an error occurs during the printing operation of the first print page of manual duplex printing, the printing apparatus of the present invention prints the print data of the page to be interrupted after the processing of the job of the previous print page after restarting is completed. , Re-acquire from print data sender. As a result, even if the print data of the page to be interrupted is not held in the memory of the own apparatus due to insufficient memory capacity or the like, recovery printing of the page to be interrupted becomes possible.

  Specifically, for example, the recovery unit includes a blank sheet conveyance unit that conveys a blank sheet that replaces the sheet corresponding to the page to be interrupted on the condition that the error is canceled after the interruption by the interruption unit, and the blank sheet A resuming unit for resuming the printing operation of the page following the page to be interrupted after the white paper is conveyed by the conveying unit; and after the resuming of the printing operation by the resuming unit, An instruction unit for instructing resetting of a complementary sheet which is a sheet conveyed as the blank sheet by the blank sheet conveyance unit and on which the post-printing page is printed after restarting the printing operation by the resuming unit; After the resume of the printing operation by the resuming unit and after the job processing of the subsequent print page is completed, the print data of the page to be interrupted is transmitted to the print data. A reacquisition unit to reacquire from the print data of the interrupted page reacquisition unit acquires, may comprise a recovery printing unit for printing on the complementary sheets set again after instruction by the instruction unit.

  The above recovery unit inserts a blank sheet that replaces the sheet of the page to be interrupted when the error is cleared. Then, the manual double-sided printing operation is resumed from the page following the page to be interrupted, and the job processing for the post-printing page is completed. At this time, since a blank sheet is inserted as a sheet corresponding to the interruption target page, the front-and-back correspondence relationship between the preprint page after the interruption target page and the post print page corresponding to the preprint page is appropriate. After that, the print data of the page to be interrupted is acquired, and the supplementary sheet that is the inserted blank paper (the sheet that has not been printed because the printing of the post-printing page has been completed) is reset, and the complementing is performed. Print the interrupted page on the sheet. As a result, the correspondence between the front and back of the printed matter including the page to be interrupted becomes appropriate.

  In addition, for example, the recovery unit includes a discard unit that discards the print data of the first print page subsequent to the page to be interrupted without printing, on condition that the error is canceled after the interruption by the interruption unit. , After discarding the print data by the discarding unit, a resuming unit for resuming the printing operation of the post-printing page, and after resuming the printing operation by the resuming unit and after the processing of the job of the post-printing page is completed, An instructing unit for instructing resetting of an incomplete sheet, which is a sheet on which a print page is printed and the first print page is not printed, and after restarting the print operation by the resume unit, After the job processing is completed, whether the print data of the page to be interrupted and the print data of the destination print page subsequent to the page to be interrupted are the transmission source of the print data. A re-acquisition unit that re-acquires, and a recovery printing unit that prints the print data of the page to be interrupted acquired by the re-acquisition unit on the unfinished sheet reset after the instruction by the instruction unit .

  When the error is cleared, the recovery unit discards the print data of the first print page after the page to be interrupted, and restarts the manual duplex printing operation from the printing operation of the subsequent print page. Then, the post-print page job processing is completed. At this time, since the print data of the first print page after the page to be interrupted is not printed, an incomplete sheet on which only the post-print page corresponding to those pages is printed is output. Thereafter, the print data of the page to be interrupted and the subsequent print page is acquired, the unfinished sheet is reset, and the unprinted pages after the page to be interrupted are printed on the unfinished sheet. As a result, even for a printed material including a preprinted page after the page to be interrupted, a printed material with an appropriate correspondence between the front and back surfaces can be obtained.

  In addition, for example, the recovery unit includes a resuming unit that resumes a printing operation of a page that follows the page to be interrupted on the condition that the error is canceled after the interruption by the interruption unit, and a printing operation by the resuming unit. After resuming the process, after completing the job of the first print page and before starting the job of the post print page, the print data of the page to be interrupted is re-acquired from the transmission source of the print data. An acquisition unit, a recovery print unit that prints the print data of the page to be interrupted acquired by the re-acquisition unit before starting the job processing of the post-print page, and after printing by the recovery print unit. Before the processing of the job of the post-print page starts, other pages than the page corresponding to the back side of the page to be interrupted among the post-print pages of the print data. Di is A, and a changing unit for changing the printing order to be printed first.

  In the recovery unit, after the error is released, the manual duplex printing operation is restarted from the page subsequent to the page to be interrupted, and the job processing of the first print page is completed. Thereafter, before starting the job processing of the post-print page, the print data of the page to be interrupted is acquired and the page to be interrupted is printed. As a result, the page to be interrupted is the tail of the sheet bundle on which the first print page is printed. Then, the recovery unit rearranges the printing order of the pages corresponding to the back side of the page to be interrupted among the post-printing pages so that the printing order is after the other pages. Thereafter, processing of the job of the post-print page is started. As a result, even for a printed material including a preprinted page after the page to be interrupted, a printed material with an appropriate correspondence between the front and back surfaces can be obtained.

  The change unit may output an instruction to change the print data transmission order to the print data transmission source. According to this configuration, there is no need to execute processing for changing the printing order in the own apparatus. Therefore, the possibility that the present invention can be applied to a device having a small memory capacity is increased.

  The change unit may change the print order of the print data after obtaining the print data from the print data transmission source. According to this configuration, since the printing order is changed by the own apparatus, the present invention can be applied without increasing the load on the transmission source apparatus.

  The recovery unit may include a request unit that requests the transmission source of the print data to transmit a page to be acquired from the print data held by the transmission source of the print data. By causing the print data transmission source to transmit the acquisition target page held by itself, the user does not need to input a print instruction for recovery printing.

  The recovery unit may include a request unit that requests the print data transmission source to output a print instruction of a page to be acquired to the user. As a method of outputting instructions to the user, for example, screen display and voice guidance can be applied. By allowing the user to input a print instruction for the acquisition target page, the print data transmission source does not need to hold the print data for recovery printing.

  According to the present invention, it is possible to realize a printing apparatus that can be expected to perform recovery printing by manual duplex printing even when the memory capacity is small.

1 is a perspective view illustrating a schematic configuration of a printer according to an embodiment. FIG. 2 is a conceptual diagram illustrating an internal configuration of the printer illustrated in FIG. 1. FIG. 2 is a block diagram illustrating an electrical configuration of a printer. It is a figure which shows the printing operation outline at the time of normal at the time of performing manual duplex printing. FIG. 10 is a diagram illustrating an outline of a printing operation when a paper jam occurs during printing on the first side when manual duplex printing is performed. It is a figure which shows the printing operation | movement outline | summary at the time of paper jam having generate | occur | produced at the time of the printing of the 1st surface at the time of performing manual duplex printing concerning a 1st form. It is a flowchart which shows the procedure of the manual duplex printing process concerning a 1st form. It is a figure which shows the printing operation outline | summary at the time of paper jam having generate | occur | produced at the time of the printing of the 1st surface at the time of performing manual duplex printing concerning a 2nd form. It is a flowchart which shows the procedure of the manual double-sided printing process concerning a 2nd form. FIG. 10 is a diagram illustrating an outline of a printing operation when a paper jam occurs when printing on the first side when manual duplex printing is performed according to a third embodiment. It is a flowchart which shows the procedure of the manual double-sided printing process concerning a 3rd form.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of a printing apparatus according to the invention will be described in detail with reference to the accompanying drawings. In this embodiment, the present invention is applied to a printer capable of manual duplex printing.

[Entire printer configuration]
As shown in FIG. 1, a printer 100 according to an embodiment includes a main body 10 that forms an image on a sheet, a display 41 that is located on the upper surface of the main body 10 and includes a liquid crystal display, An operation panel 40 including a button group 42 including a start key, a stop key, a numeric keypad, and the like is provided. The operation panel 40 can display an operation status and can be input by a user.

  The main body 10 is located at the bottom and is detachable from the apparatus main body. The main body 10 is a paper feed cassette 91 that accommodates sheets before printing, and a paper discharge that is placed at the top and places sheets after printing. And a tray 96.

[Internal configuration of printer]
FIG. 2 shows the internal configuration of the printer 100. As shown in FIG. 2, the printer 100 includes a process unit 50 that forms a toner image by a known electrophotographic method and transfers the toner image to a sheet. The process unit 50 only needs to be able to print an image on a sheet, and may be another method such as an inkjet method. Furthermore, it may be a color printer or a monochrome printer.

  Further, in the printer 100, a paper feed roller 71 that picks up the sheets one by one from the paper feed cassette 91, a registration roller 73 that conveys the sheets to the process unit 50, and a paper discharge that discharges the sheets to the paper discharge tray 96. A roller 76 is provided. In addition, several conveyance rollers are provided in the paper path. These various rollers are driven by a drive motor (not shown).

  In the printer 100, the sheet stored in the paper feed cassette 91 located at the bottom is guided to the process unit 50 via the paper feed roller 71 and the registration roller 73, and is further discharged from the process unit 50. A substantially S-shaped paper conveyance path 11 (a chain line in FIG. 2) is provided to guide the paper discharge tray 96 through the paper roller 76.

  The printer 100 according to the present embodiment takes the sheets placed in the paper feed cassette 91 one by one into the paper conveyance path 11, conveys the sheets to the process unit 50, and receives the toner image formed in the process unit 50. Transfer to the sheet. Further, the sheet on which the toner image is transferred is conveyed to a fixing device in the process unit 50, and the toner image is thermally fixed on the sheet. Then, the sheet after fixing is guided to the paper discharge roller 76 and is discharged to the paper discharge tray 96 by the paper discharge roller 76.

[Electrical configuration of printer]
Next, the electrical configuration of the printer 100 will be described. As shown in FIG. 3, the printer 100 includes a control unit 30 including a CPU 31, a ROM 32, a RAM 33, and an NVRAM (nonvolatile RAM) 34. The control unit 30 is electrically connected to the process unit 50, the operation panel 40, the network interface 36, and the like.

  The ROM 32 stores various control programs for controlling the printer 100, various settings, initial values, and the like. The RAM 33 is used as a work area from which various control programs are read or as a storage area for temporarily storing image data.

  The CPU 31 stores each processing result in the RAM 33 or NVRAM 34 in accordance with a control program read from the ROM 32 and signals sent from various sensors, while driving each component of the printer 100 (for example, driving motors for various rollers in the paper transport path 11). ) To control.

  Note that the RAM 33 of the printer 100 does not have a capacity enough to store print data for one page. Therefore, when printing, the printer 100 immediately discards the printed print data and accepts subsequent print data.

  The network interface 36 is connected to a network such as a LAN, and enables connection with a PC 200 in which a printer driver for the printer 100 is incorporated. The printer 100 receives a print job from the PC 200 via the network interface 36. The printer 100 may include a serial interface such as a USB instead of the network interface 36 and may be directly connected to the PC 200.

[Overview of manual duplex printing]
Next, an outline of operation when a manual duplex printing job is input from the PC 200 to the printer 100 and the manual duplex printing is executed by the printer 100 will be described. In the following description, it is assumed that a print job for duplex printing for 8 pages has been input.

  When a print instruction for manual duplex printing for print data for 8 pages is input, the PC 200 creates an odd page print job and an even page print job from the print data. Then, even page print data is transmitted to the printer 100 one page at a time in ascending order, and after all even pages are transmitted, transmission of odd page print data is started. The print data for manual duplex printing is retained until printing of the print data for all pages is completed.

  Upon receiving an even page print job from the PC 200, the printer 100 starts printing even page print data. Since the printer 100 does not have enough memory capacity to store print data for one page, the printed print data is immediately discarded and the next print data is received.

  After printing all the even page print data, the printer 100 does not start printing the odd page print data immediately, but interrupts the printing operation. At this stage, as shown in FIG. 4A, a sheet bundle having even-numbered pages of print data printed thereon is placed on the paper discharge tray 96.

  After completing the processing of the even-numbered page print job, the printer 100 collects the sheet bundle discharged to the paper discharge tray 96 and turns it back so that the unprinted back surface becomes the print surface again. An instruction to the user to be set to 91 is output. In this embodiment, a message box is displayed on the PC 200. In addition, the instruction method may be message display on the display unit 41 of the operation panel 40 of the printer 100 or voice guidance.

  Further, the printer 100 waits for an input of a print continuation instruction by a user input after an instruction to reset the sheet. After resetting the sheet, the user inputs a print continuation instruction to the printer 100. The input of the print continuation instruction may be a direct input by an operation on the button group 42 of the operation panel 40 of the printer 100 or an indirect input by an operation on the PC 200.

  Upon receiving the print continuation instruction, the printer 100 resumes the printing operation. That is, an odd page print job is accepted and printing of odd page print data is started. At this time, since the sheet bundle on which the even page print data has been printed is set in the sheet cassette 91 in the page order, the odd page print data is printed on the other side of the one-side printed sheet. Therefore, after the printing of the print data for all odd pages is completed, as shown in FIG. 4B, a printed matter is obtained in which the page numbers are correctly associated with the front and back surfaces.

  Note that the printer 100 according to the present embodiment prints the printed sheets from the even numbered pages first so that the first page of the printed bundle after the duplex printing is at the top in order to discharge the printed sheets with the printing surface facing downward. However, for example, in the case of a printer that discharges the printing surface upward, transmission of print data may be started in ascending order from odd pages.

  When manual duplex printing is being performed using the above procedure, if a paper jam occurs in a print job for an even-numbered page (hereinafter referred to as the “destination print page”) that is printed first on the sheet, the page to be interrupted where the paper jam occurred Recovery becomes difficult. That is, since the printer 100 immediately discards the printed print data after printing, there is a possibility that the print data of the printed portion of the interruption target page is not held when a paper jam occurs. When the page to be interrupted is not held, printing is performed from a page subsequent to the page to be interrupted as shown in FIG. In this case, after the printing of the last page of the even pages is completed, a sheet bundle from which the interruption target page is missing is created.

  In this state, even if the sheet bundle is reset and the processing of a print job for odd pages (hereinafter referred to as “post-print pages”) to be printed on the sheet later is started, as shown in FIG. In addition, on the pages following the page to be interrupted, a printed matter in which the page numbers of the front and back sides are not associated is created.

  The printer 100 according to the present embodiment does not create a printed matter in which the front and back sides are not associated with each other as illustrated in FIG. 5B, that is, even if a paper jam occurs in the processing of an even page print job. Manual duplex printing is performed to obtain a printed material in which the page numbers on the front and back sides are correctly associated.

[Controlling the printer for manual duplex printing]
Hereinafter, three forms of manual duplex printing processing executed by the printer 100 will be described. In particular, the following description will focus on the recovery operation when a paper jam occurs during printing of the first print page.

[First embodiment]
FIG. 6 shows an outline of the operation of recovery printing in the case of manual double-sided printing processing according to the first embodiment, when a paper jam occurs during printing of even-numbered pages. Specifically, FIG. 6 shows an outline of the operation of recovery printing when a paper jam occurs in printing the sixth page among even-numbered pages that are the first print pages.

  In the first-side manual duplex printing, when a paper jam occurs during printing of the sixth page, the printer 100 responds to the sixth page after returning from the paper jam as shown in FIG. Sheets to be carried in from the paper feed cassette 91. On this sheet, no image is printed, and the sheet is discharged to a discharge tray 96. That is, a blank sheet (hereinafter, this sheet is referred to as a “complementary sheet”) is discharged. Thereafter, the eighth page following the sixth page, which is the page to be interrupted, is printed. As a result, after the processing of the even-numbered page print job is completed, a sheet bundle in which the complementary sheets are inserted is output on the paper discharge tray 96.

  Next, the sheet bundle is reset in the paper feed cassette 91 by the user. Thereafter, as shown in FIG. 6B, the printer 100 starts processing an odd page print job. As a result, for the sheets other than the complementary sheet, the printed matter is in a state in which the page numbers are correctly associated with the front surface and the back surface. On the other hand, the supplementary sheet is a printed matter in which only odd pages are printed.

  Next, after the processing of the odd-numbered page print job is completed, the user takes out the complementary sheet from the output sheet bundle and resets the complementary sheet in the paper feed cassette 91. After completing the resetting of the complementary sheet by the user, the printer 100 re-acquires the print data of the sixth page, which is the interruption target page, from the PC 200. Then, as shown in FIG. 6C, the print data of the page to be interrupted is printed on the unprinted surface of the complementary sheet. As a result, even for the sheet including the interruption target page, the printed matter is in a state in which the page numbers of the front surface and the back surface are correctly associated. That is, for all pages, a printed matter in which the page numbers on the front and back sides are correctly associated is obtained.

  The manual duplex printing process for realizing the manual duplex printing recovery operation of the first embodiment will be described below with reference to the flowchart of FIG. This manual duplex printing process is executed by the control unit 30 when a print job for the first print page is received.

  In the manual duplex printing process of the first embodiment, first, reception of even page print data, which is the first print page, is started, and the received print data is printed (S101, an example of a printing unit). The print data is divided into a plurality of print data for one page, and the divided data is transmitted according to the free capacity of the printer 100.

  Next, it is determined whether or not a paper jam has occurred during the printing of even page print data (S102). If a paper jam has occurred (S102: YES), the printing operation is interrupted (S120, an example of interrupting means). Then, the page number of the page to be interrupted for which printing has been interrupted due to the paper jam is stored in the RAM 33 or the NVRAM 34 (S121). At this time, if unprinted print data of the page to be interrupted is stored, the print data is discarded.

  Thereafter, it is determined whether the paper jam has been released (S122). The paper jam is released by the user. While the paper jam is not released (S122: NO), it waits until the paper jam is released. After the paper jam is canceled (S122: YES), a blank sheet as a complementary sheet is output before the printing operation is resumed (S123, an example of a blank sheet transport unit). After the blank page output in S123, printing of the page following the page to be interrupted is resumed (an example of a resuming unit).

  After S123, or when no paper jam has occurred (S102: NO), it is determined whether or not the processing of the last page of even-numbered pages has been completed (S103). That is, in S103, if the last page is not a page to be interrupted, it is determined whether printing of the last page is completed. When the last page becomes a page to be interrupted, it is determined whether or not the blank paper conveyance that is the process as the page to be interrupted is completed. If the processing of the last page of the even page has not been completed (S103: NO), the process returns to S101, and the printing of the even page is continued.

  On the other hand, when the processing of the last page of the even pages is completed (S103: YES), the user is notified of a sheet replacement instruction (S104). For example, the PC 200 is instructed to display a message box for resetting the sheet bundle output on the paper discharge tray 96 to the paper feed cassette 91 so that the unprinted surface becomes the print surface. Alternatively, the message may be displayed on the display unit 41 of the printer 100. The message may include information indicating that a blank sheet is inserted into the sheet bundle. Further, the message may include information on inputting a print continuation instruction after resetting the sheet bundle.

  After notifying the user of the paper replacement instruction, the user has input a print continuation instruction (for example, an input of a button displayed on the PC 200 with a message or an input of a specific button in the button group 42). In response, the reception of the odd-numbered print data, which is a post-print page, is started, and the received print data is printed (S105, an example of a printing unit).

  After the printing of the last odd page is completed, it is determined whether or not the page number is stored (S106). That is, if a paper jam occurs during printing of even-numbered page print data, the page number of the page to be interrupted is stored in S121, and the page bundle after the printing of the last page of the odd-numbered page is completed. , It can be determined whether or not a complementary sheet on which only the post-print page is printed is inserted.

  Therefore, when the page number is stored (S106: YES), the user is instructed to reset the supplementary sheet to the paper feed cassette 91 (S141, an example of an instruction unit). For example, a sheet bundle after the last page of an odd page has been printed has a complementary sheet on which only the post-printed page is printed, and the complementary sheet is supplied so that the unprinted side becomes the print side. The PC 200 is instructed to display a message box for resetting the paper cassette 91. Alternatively, the message may be displayed on the display unit 41 of the printer 100. The message may include information on how many sheets the supplementary sheet is.

  After notifying the user of the instruction for resetting the complementary sheet, the printer 100 inputs a reprint instruction from the user (for example, input of a button displayed on the PC 200 together with a message or input of a specific button in the button group 42). ), The PC 200 is requested to resend the print data corresponding to the stored page number, that is, the print data of the page to be interrupted (S142, an example of a request unit). When receiving the request, the PC 200 transmits print data of the designated page number to the printer 100.

  Thereafter, the print data of the page to be interrupted sent from the PC 200 is received, and the received print data is printed (an example of the recovery unit, the reacquisition unit, and the recovery print unit). That is, the print data of the page to be interrupted is printed on the unprinted side of the complementary sheet. Thereby, double-sided printing is also performed on the sheet including the interruption target page. After printing is completed, the page number stored in S121 is erased (S144).

  After S144 or when the page number is not stored (that is, when paper jam does not occur in printing of even pages) (S106: NO), the manual duplex printing process is terminated.

  In the first mode, a blank sheet that substitutes for the sheet of the page to be interrupted is inserted when the error is canceled due to an error during printing of the first print page. The manual double-sided printing operation is resumed from the page following the interruption target page, overtaking the interruption target page, and the printing operation up to the last page of the subsequent printing page is completed. At this time, since a blank sheet is inserted as a sheet corresponding to the interruption target page, the front-and-back correspondence relationship between the preprint page after the interruption target page and the post print page corresponding to the preprint page is appropriate. In addition, by resuming printing, a post-print page corresponding to the page to be interrupted is printed on the inserted blank sheet (complementary sheet). Thereafter, the print data of the page to be interrupted is acquired, the supplementary sheet is reset, and the page to be interrupted is printed on the supplementary sheet. As a result, the correspondence between the front and back surfaces of the printed matter including the interruption target page becomes appropriate.

[Second form]
FIG. 8 shows an outline of operation of recovery printing in the case of manual duplex printing processing according to the second embodiment, when a paper jam occurs during printing of even-numbered pages. Specifically, FIG. 8 shows the operation of recovery printing when a paper jam occurs in the printing of the sixth page among the even-numbered pages that are the first printing pages, as in FIG. 6 described in the first embodiment. An overview is shown.

  In the manual double-sided printing of the second embodiment, when a paper jam occurs during printing of the sixth page, the printer 100 prints even pages after returning from the paper jam as shown in FIG. The process is finished, and the sixth and subsequent pages are not printed. Specifically, the print data for the sixth and subsequent pages are received and discarded without printing. As a result, after the processing of the print job for even pages is completed, a sheet bundle of sheets for which printing has been completed is obtained on the paper discharge tray 96 before printing is interrupted.

  Next, the sheet bundle is reset in the paper feed cassette 91 by the user, and the printer 100 starts printing odd pages as shown in FIG. As a result, for a sheet on which even-numbered pages have been printed, the printed matter is in a state in which the page numbers are correctly associated with the front and back surfaces. On the other hand, odd-numbered pages (pages 5 and 7 in FIG. 8) corresponding to the print data on and after the sixth page are printed on a new sheet. The newly loaded sheet is a printed material in which only odd pages are printed (hereinafter, this printed material is referred to as “incomplete sheet”).

  Next, after the processing of the odd-numbered page print job is completed, the user takes out the unfinished sheet from the output sheet bundle and resets the unfinished sheet in the sheet feeding cassette 91. After the user completes resetting of the unfinished sheet, the printer 100 re-acquires print data of even-numbered pages from the sixth page, which are pages to be interrupted, from the PC 200. Then, as shown in FIG. 8C, print data after the page to be interrupted is printed on the unprinted surface of the unfinished sheet. As a result, even for sheets including even-numbered pages after the page to be interrupted, the printed matter is in a state in which the page numbers are correctly associated with the front and back surfaces. That is, for all pages, a printed matter in which the page numbers on the front and back sides are correctly associated is obtained.

  The manual duplex printing process for realizing the manual duplex printing recovery operation of the second embodiment will be described below with reference to the flowchart of FIG. This manual duplex printing process is also executed by the control unit 30 when a print job for the first print page is received. In addition, about the process similar to a 1st form, the same code | symbol as a 1st form is attached | subjected and description is abbreviate | omitted.

  In the second-side manual duplex printing process, first, reception of even-numbered print data, which is the first print page, is started, and the received print data is printed (S101, an example of a printing unit). Thereafter, it is determined whether or not a paper jam has occurred during the printing of the even page print data (S102).

  If a paper jam has occurred (S102: YES), the printing operation is interrupted (S120, an example of interruption means), and the page number of the interrupted page whose printing was interrupted due to the paper jam is stored in the RAM 33 or NVRAM 34 ( S121). At this time, if unprinted print data of the page to be interrupted is stored, the print data is discarded.

  Thereafter, after the paper jam is released (S122: YES), the reception of the print data of the even page subsequent to the page to be interrupted is resumed. However, the print data of the even page following the page to be interrupted is immediately discarded without being printed after being received (S223, an example of a discard unit).

  After S223 or when no paper jam has occurred (S102: NO), it is determined whether or not the processing of the last page of even-numbered pages has been completed (S103). If a paper jam has occurred, the reception of print data for all even pages is completed by discarding the print data in S223, and therefore it is determined that the processing for the last page of even pages has been completed. . If the processing of the last page of the even page has not been completed (S103: NO), the process returns to S101, and the printing of the even page is continued.

  On the other hand, when the processing of the last page of the even pages is completed (S103: YES), the user is notified of a sheet replacement instruction (S104). After notifying the user of a paper replacement instruction, when the user inputs a print continuation instruction, reception of print data for odd-numbered pages is started and the received print data is printed (S105, printing unit) One case). If a paper jam has occurred, the printing operation is resumed from the printing of the odd page print data (an example of a resuming unit).

  After the printing of the last odd page is completed, it is determined whether or not the page number is stored (S106). That is, if a paper jam occurs during printing of even-numbered page print data, the page number of the page to be interrupted is stored in S121, and the sheet bundle after the last page of odd-numbered pages has been printed is stored. It can be determined that an incomplete sheet on which only the post-print page is printed exists in the latter half.

  Therefore, when the page number is stored (S106: YES), the user is instructed to reset the unfinished sheet to the paper feed cassette 91 (S241, an example of an instruction unit). For example, there is an unfinished sheet in which only the post-printed page is printed in the sheet bundle after the printing of the last page of the odd page is completed, and the unprinted surface of the unfinished sheet becomes the print surface. The PC 200 is instructed to display on the screen of the PC 200 a message box for resetting the paper cassette 91. Alternatively, the message may be displayed on the display unit 41 of the printer 100. In addition, the message may include information on how many unfinished sheets are present after the number of sheets.

  After notifying the user of an instruction to reset an unfinished sheet, the PC 200 receives the input of a reprint instruction, and the PC 200 and subsequent page numbers stored in S121, that is, the page to be interrupted. , Request retransmission of the print data of the preprint page (S242, an example of a request unit).

  Thereafter, the print data after the page to be interrupted sent from the PC 200 is received, and the received print data is printed (an example of a recovery unit, a reacquisition unit, and a recovery print unit). That is, the print data of even pages after the page to be interrupted is printed on the unprinted surface of the unfinished sheet. Thereby, double-sided printing is also performed on sheets corresponding to pages after the interruption target page. After printing is completed, the page number stored in S121 is erased (S144). After S144 or when the page number is not stored (S106: NO), the manual duplex printing process is terminated.

  In the second form, when the error is canceled due to an error during printing of the previous print page, the print data of the previous print page after the page to be interrupted is discarded. Then, the manual double-sided printing operation is resumed from the printing operation of the post-printing page, and the printing operation up to the final page of the post-printing page is completed. After that, the print data of the page to be interrupted and the pre-printed page that follows it is acquired, and the unfinished sheet that has just been printed on the post-print page is reset. Print the page. As a result, even for a printed material including a preprinted page after the page to be interrupted, a printed material with an appropriate correspondence between the front and back surfaces can be obtained.

[Third embodiment]
FIG. 10 shows an outline of the operation of recovery printing in the case of manual duplex printing processing according to the third embodiment, in which a paper jam occurs during printing of even-numbered pages. Specifically, FIG. 10 shows the operation of recovery printing when a paper jam occurs in the printing of the sixth page among the even-numbered pages that are the first printing pages, as in FIG. 6 described in the first embodiment. An overview is shown.

  In the manual duplex printing of the third form, when a paper jam occurs during printing of the sixth page, the printer 100 prints the first print page after returning from the paper jam as shown in FIG. To resume. Then, after the processing of the even-numbered page print job is completed, the print data of the sixth page, which is the page to be interrupted, is acquired from the PC 200 and printed again. Thereby, after the printing of the interruption target page is completed, the sheet bundle whose page order is changed on the paper discharge tray 96, specifically, the sheet bundle in which the interruption target page is printed after the last page of the even pages. Is obtained.

  Next, the sheet bundle is reset in the paper feed cassette 91 by the user. Thereafter, the printer 100 transmits to the PC 200 an instruction to rearrange the odd pages so that the odd page corresponding to the page to be interrupted is at the end. The PC 200 rearranges the transmission order of odd-numbered pages when receiving the rearrangement instruction. In other words, the transmission order of the fifth page, which is an odd page corresponding to the sixth page, which is the page to be interrupted, is changed after printing the seventh page, which is the last page, as the tail of the odd page print data.

  Thereafter, as shown in FIG. 10B, printing of odd-numbered pages is started. As a result, for the sheet on which the interruption target page at the end of the sheet bundle is printed, the print data transmitted last is the odd page print data corresponding to the interruption target page. A printed matter in which the page numbers are correctly associated with each other is obtained.

  The manual duplex printing process for realizing the manual duplex printing recovery operation of the third embodiment will be described below with reference to the flowchart of FIG. This manual duplex printing process is also executed by the control unit 30 when a print job for the first print page is received. In addition, about the process similar to a 1st form, the same code | symbol as a 1st form is attached | subjected and description is abbreviate | omitted.

  In the manual double-sided printing process of the third embodiment, first, reception of even page print data, which is the first print page, is started, and the received print data is printed (S101, an example of a printing unit). Thereafter, it is determined whether or not a paper jam has occurred during the printing of the even page print data (S102).

  If a paper jam has occurred (S102: YES), the printing operation is interrupted (S120, an example of interruption means), and the page number of the interrupted page whose printing was interrupted due to the paper jam is stored in the RAM 33 or NVRAM 34 ( S121). At this time, if unprinted print data of the page to be interrupted is stored, the print data is discarded. Thereafter, after the paper jam is released (S122: YES), the reception of the print data of the even page following the page to be interrupted is resumed (an example of a resume unit).

  After printing is resumed after S122, or when no paper jam has occurred (S102: NO), it is determined whether or not the processing of the last page of even-numbered pages has been completed (S103). That is, in S103, if the last page is not a page to be interrupted, it is determined whether printing of the last page is completed. When the last page becomes a page to be interrupted, it is determined whether or not reception and discard of data, which is processing as the page to be interrupted, is completed. If the processing of the last page of the even page has not been completed (S103: NO), the process returns to S101, and the printing of the even page is continued.

  On the other hand, when the processing of the last page of the even pages is completed (S103: YES), it is determined whether or not the page number is stored (S303). If the page number is stored (S303: YES), a retransmission request for the page to be interrupted is transmitted to the PC 200 (S361, an example of a request unit). Upon receiving the retransmission request, the PC 200 creates a print job for the page to be interrupted, and sets the priority of the print job higher than that for odd-numbered pages. As a result, the print data of the page to be interrupted is transmitted to the printer 100 after the transmission of the print data of the final page of the even page is completed, that is, after the processing of the print job of the even page is completed and before the processing of the print job of the odd page is started. The

  The printer 100 receives the print data of the page to be interrupted, and prints the received print data (an example of a recovery unit, a reacquisition unit, and a recovery print unit). As a result, the sheet on which the interruption target page is printed is output at the end of the sheet bundle.

  Thereafter, a request for rearranging odd pages is transmitted to the PC 200 so that the page corresponding to the page to be interrupted is transmitted last (S363, an example of a changing unit). The PC 200 rearranges the transmission order of the print data of the odd-numbered print job in response to receiving the rearrangement instruction.

  After S363 or when the page number is not stored (that is, when a paper jam does not occur in printing even pages) (S303: NO), the user is notified of a paper replacement instruction (S104). After notifying the user of a paper replacement instruction, when the user inputs a print continuation instruction, reception of print data for odd-numbered pages is started and the received print data is printed (S105, printing unit) One case).

  The odd page print data transmitted from the PC 200 follows the order of the even pages of the sheet bundle. That is, for even pages, the interruption target page is printed last, and the sheet on which the interruption target page is printed exists at the end of the sheet bundle. On the other hand, for odd pages, the page corresponding to the page to be interrupted is transmitted last. As a result, both sides of the sheet corresponding to the interruption target page are printed with the front side and the back side correctly associated with each other.

  In the third embodiment, the printer 100 resumes the manual duplex printing operation from the page following the page to be interrupted and completes the job processing of the previous print page when the error is canceled due to an error during printing of the previous print page. . Thereafter, before starting the printing of the post-print page, the print data of the interruption target page is acquired and the interruption target page is printed. As a result, a sheet bundle whose last page to be interrupted is obtained. On the other hand, the printer 100 requests the rearrangement of the transmission order of the pages corresponding to the back side of the page to be interrupted so that the transmission order is later than other pages. Thereafter, the printing operation of the post-print page is started. As a result, even for a printed material including a preprinted page after the page to be interrupted, a printed material with an appropriate correspondence between the front and back surfaces can be obtained.

  As described above in detail, the printer 100 according to the first, second, and third embodiments cancels an error when an error occurs during the printing operation of an even-numbered page (an example of a first print page) of manual duplex printing. Thereafter, after the processing of the even-numbered page print job is completed, the print data of the page to be interrupted is reacquired from the PC 200 (print data transmission source). The re-acquired print data of the page to be interrupted may be printed on a sheet on which the print data of the post-print page corresponding to the page to be interrupted is printed, as in the first and second embodiments. As in the embodiment, the print data of the interruption target page may be printed first, and the print data of the post-print page corresponding to the interruption target page may be printed later. As a result, recovery printing is possible even if the print data of the page to be interrupted is not held in the memory of the own apparatus.

  In the first embodiment, the print data to be reacquired is only the page to be interrupted. Therefore, the amount of print data to be retransmitted is small, and the communication load and processing load are small. Further, rearrangement of post-print pages is not necessary, and the processing load of the print data transmission source is small.

  In the second mode, the first print pages after the page to be interrupted are also printed in page order. Therefore, the printed matter after recovery printing is in page order. Therefore, the printed material is convenient for the user.

  In the third embodiment, the print data to be reacquired is only the page to be interrupted. Therefore, the amount of print data to be retransmitted is small, and the communication load and processing load are small. Further, it is not necessary for the user to reset the sheet after the printing of the post-print page is completed. Therefore, there is little trouble for the user.

  Note that this embodiment is merely an example, and does not limit the present invention. Therefore, the present invention can naturally be improved and modified in various ways without departing from the gist thereof. For example, the present invention is not limited to a printer, and can be applied to any apparatus having a printing function such as a multifunction machine or a FAX apparatus. The image forming method of the process unit is not limited to the electrophotographic method, and may be an ink jet method.

  Further, the printer 100 according to the embodiment does not include a conveyance path for duplex printing, but may be a printer that includes a conveyance path for duplex printing and capable of automatic duplex printing. For example, the present invention can be applied when manual duplex printing is selected as long as the printer can select automatic duplex printing and manual duplex printing when instructing duplex printing from a PC.

  The printer 100 according to the embodiment includes the RAM 33 having a capacity enough to store print data for one page. However, the printer 100 may have a RAM 33 capable of storing print data for a plurality of pages. Good. Even in this case, by applying the present invention, the amount of memory used in manual duplex printing can be reduced, and the burden of other functions can be reduced.

  In the printer 100 according to the embodiment, since the PC 200 that is the transmission source of the print data holds the print data until the manual double-side printing is completed, the PC 200 transmits a request for resending the interruption target page to the PC 200. By receiving the retransmission request, the interruption target page is transmitted without the user's trouble, but the acquisition method of the interruption target page is not limited to this. For example, the page number of the page to be interrupted may be notified to the user, and the user may input a print instruction for the page again. In this case, the PC 200 may not hold the print data until manual duplex printing is completed.

  In the third embodiment, the printer 100 instructs the PC 200 to rearrange the rear print pages, and the PC 200 rearranges the rear print pages. However, the present invention is not limited to this. For example, if the printer 100 can store a plurality of pages, the printer 100 may rearrange the subsequent print pages. In this case, the rearrangement request in S363 is not necessary, and when printing the odd page in S105, after receiving the odd page print data corresponding to the page to be interrupted, the print data is held without printing, After printing the last odd page, print the page to be interrupted.

  The processing disclosed in the embodiments may be executed by a single CPU, a plurality of CPUs, hardware such as an ASIC, or a combination thereof. Further, the processing disclosed in the embodiment can be realized in various modes such as a recording medium or a method recording a program for executing the processing.

11 Paper transport path 30 Control unit 40 Operation panel 50 Process unit 91 Paper feed cassette 96 Paper discharge tray 100 Printer

Claims (7)

The first printed page, which is one of the odd and even pages of the print data having a plurality of pages, is sequentially printed on the first side of the sheet and discharged, and the first side is printed on one side. A printing unit that waits for the sheet to be reset and then sequentially prints the second print page, which is the other of the odd and even pages of the print data, on the second side of the one-side printed sheet;
An interruption unit for interrupting the printing operation of the printing unit when an error is detected during the printing operation of the preprinted page by the printing unit;
After the interruption by the interruption unit and after the error is released, the printing operation of the page subsequent to the interruption target page that is the page for which the printing operation is interrupted is resumed, and after the printing operation is resumed, the pre-printing A recovery unit that acquires at least the print data of the page to be interrupted from the transmission source of the print data and prints the acquired print data after the processing of the page job is completed;
Equipped with a,
The recovery unit
A blank sheet transport section that transports a blank sheet that replaces the sheet corresponding to the page to be interrupted on the condition that the error is canceled after the interruption by the interrupt section;
A resuming unit for resuming a printing operation of a page subsequent to the page to be interrupted after conveying the blank sheet by the blank sheet conveying unit;
The post-printing after the resume of the printing operation by the resuming unit and after completion of the job of the post-printing page, the sheet conveyed as the blank paper by the blank paper conveying unit and after the resuming of the printing operation by the resuming unit An instruction unit for instructing resetting of a complementary sheet, which is a sheet on which a page is printed,
A re-acquisition unit that re-acquires the print data of the page to be interrupted from the transmission source of the print data after resuming the printing operation by the resuming unit and completing the processing of the job of the subsequent print page;
A recovery printing unit that prints the print data of the page to be interrupted acquired by the reacquisition unit on the complementary sheet reset after the instruction by the instruction unit;
Printing apparatus according to claim Rukoto equipped with. The first printed page, which is one of the odd and even pages of the print data having a plurality of pages, is sequentially printed on the first side of the sheet and discharged, and the first side is printed on one side. A printing unit that waits for the sheet to be reset and then sequentially prints the second print page, which is the other of the odd and even pages of the print data, on the second side of the one-side printed sheet;
An interruption unit for interrupting the printing operation of the printing unit when an error is detected during the printing operation of the preprinted page by the printing unit;
After the interruption by the interruption unit and after the error is released, the printing operation of the page subsequent to the interruption target page that is the page for which the printing operation is interrupted is resumed, and after the printing operation is resumed, the pre-printing A recovery unit that acquires at least the print data of the page to be interrupted from the transmission source of the print data and prints the acquired print data after the processing of the page job is completed;
Equipped with a,
The recovery unit
A discarding unit for discarding the print data of the first print page subsequent to the page to be interrupted without printing, on condition that an error is released after the interruption by the interruption unit;
A resuming unit for resuming the printing operation of the post-printing page after discarding the print data by the discarding unit;
After resuming the printing operation by the resuming unit and completing the job of the post-printing page, the post-printing page is printed, and the pre-printing page is re-executed for an unfinished sheet that is a non-printing sheet. An instruction unit for instructing the set;
After resuming the printing operation by the resuming unit and completing the processing of the job of the subsequent print page, the print data of the page to be interrupted and the print data of the previous print page following the page to be interrupted are the print data. A re-acquisition unit that re-acquires from the sender of
Recovery for printing the print data of the page to be interrupted acquired by the re-acquisition unit and the print data of the previous print page following the page to be interrupted on the incomplete sheet reset after the instruction by the instruction unit A printing section;
Printing apparatus according to claim Rukoto equipped with. The first printed page, which is one of the odd and even pages of the print data having a plurality of pages, is sequentially printed on the first side of the sheet and discharged, and the first side is printed on one side. A printing unit that waits for the sheet to be reset and then sequentially prints the second print page, which is the other of the odd and even pages of the print data, on the second side of the one-side printed sheet;
An interruption unit for interrupting the printing operation of the printing unit when an error is detected during the printing operation of the preprinted page by the printing unit;
After the interruption by the interruption unit and after the error is released, the printing operation of the page subsequent to the interruption target page that is the page for which the printing operation is interrupted is resumed, and after the printing operation is resumed, the pre-printing A recovery unit that acquires at least the print data of the page to be interrupted from the transmission source of the print data and prints the acquired print data after the processing of the page job is completed;
Equipped with a,
The recovery unit
A resuming unit for resuming a printing operation of a page subsequent to the page to be suspended on condition that an error has been released after the interruption by the interruption unit;
After the restart of the printing operation by the resuming unit and after the completion of the processing of the job of the first print page, before the processing of the job of the subsequent print page is started, the print data of the page to be interrupted is transmitted. A reacquisition part that reacquires from the beginning,
A recovery printing unit that prints the print data of the page to be interrupted acquired by the re-acquisition unit before starting the job processing of the post-print page;
After printing by the recovery printing unit and before starting the processing of the job of the post-printing page, other than the page corresponding to the back side of the page to be interrupted among the post-printing pages of the print data A change section that changes the print order so that the page is printed first;
Printing apparatus according to claim Rukoto equipped with. The printing apparatus according to claim 3 ,
The printing apparatus according to claim 1, wherein the changing unit outputs an instruction to change a transmission order of the print data to the transmission source of the print data. The printing apparatus according to claim 3 ,
The printing apparatus according to claim 1, wherein the changing unit changes the print order of the print data after obtaining the print data from the transmission source of the print data. In the printing apparatus as described in any one of Claims 1-5 ,
The recovery unit
A printing apparatus comprising: a request unit that requests the print data transmission source to transmit an acquisition target page among the print data held by the print data transmission source. In the printing apparatus as described in any one of Claims 1-5 ,
The recovery unit
A printing apparatus, comprising: a request unit that requests the print data transmission source to output a print instruction of a page to be acquired to a user.

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