JP6511250B2 - Printer - Google Patents

Description

  The present invention relates to a printing machine configured to print the other side of a plurality of sheet-like printed substrates after completing printing on one of the front and back sides.

  As described above, both the front and back sides are printed by the printing machine to complete the printed matter. Examples of the printed matter include calendars, flyers, catalogs, direct mails, and the like. Such printed matter is printed with different contents for each sheet, and the printed contents on the front and back are often different. It is necessary to confirm whether the print content of the printed printed matter is correctly printed. Then, the thing of the structure of patent document 1 is already proposed.

  In this method, an inspection pattern having a plurality of different shapes and repeating regularly in a predetermined cycle is printed on a sheet separately from the print content, and the printed inspection pattern is detected by the camera. Whether or not the print content of the printed matter printed is correctly printed is determined by determining whether or not the detected plurality of inspection patterns match the order of the inspection patterns registered in advance.

JP, 2008-173803, A

  In the configuration of Patent Document 1, inspection patterns having a plurality of different shapes must be registered and stored separately from the print content. In particular, when printing various types of printed matter, not only print data increases, but also inspection pattern data also increases. As a result, when exchanging data or processing data, a large load is applied to the control unit of the printing press, the processing of the control unit can not be performed well, and there is room for improvement. Although it is conceivable to use a control unit having a large processing capacity, this is difficult to realize because it causes an increase in size of the printing machine and a rise in cost.

  The present invention has been made to solve these problems, and its object is to ensure that the control unit is not heavily loaded and that the printed content of the printed matter is correctly printed. It is to provide a printing press that can do.

In order to achieve the above object, a printing machine according to the present invention includes a sheet feeding unit for feeding a sheet-like printed material to the downstream side in the transport direction, and a printing unit disposed on the downstream side in the transport direction of the sheet feeder in the printing machine and a paper discharge section disposed downstream in the conveying direction than the printing unit to discharge the printing product of printing by the printing unit, one of the front and back surfaces of the substrate of the multiple After completion of printing on one side of the paper and setting the printed matter discharged from the paper discharge unit to the paper feeding unit , the other side is printed, and One side file and the other side file set to the same number as the one side file for printing the other side, and the plurality of one side files include one side print data for the number of pages to be printed Stored respectively and stored in each of the plurality of one-side files Identification information for identifying it from the other one-side print data is added to each one-side print data, and one-side print data and identification information in the selected one-side file are One-side printing means for printing on a side, reading means for reading identification information printed on the one side by the one-side printing means, and storage means for reading out and storing identification information from within the selected one-side file And comparing means for comparing the identification information read by the reading means with the identification information of the one-side print data stored by the storage means, and the identification information read based on the comparison result of the comparing means is the storage means Print shortage determination means for determining whether the print shortage is more than the identification information stored in the document, and the print shortage determination means If it is the cross-sectional it is characterized in that it comprises means for creating a list of print missing pages, the.

  According to the above configuration, by using identification information required when managing print data, the load applied to the control unit can be reduced as compared to the case where other data is created separately from the print data. it can. Moreover, the identification information of the one-side print data when printed by the printing machine is stored, and it is determined whether the identification information of the stored one-side print data matches the identification information read by the reading means. By judging by the control unit, it can be surely confirmed whether the printed material has been printed correctly. Further, when printing on one side of the substrate is completed by the one side print data, the other side of the substrate can be reliably printed by the other side print data as many as the one side print data.

In the printing machine according to the present invention, a sheet feeding unit for feeding a sheet-like printed material to the downstream side in the conveying direction, a printing unit disposed on the downstream side in the conveying direction of the sheet feeding unit, and the printing unit And a paper discharge unit disposed on the downstream side of the printing unit in the conveyance direction downstream of the printed unit, and printing on one of the front and back sides of the plurality of substrates is completed. After the printed matter discharged from the paper discharge unit is set in the paper feed unit, the other side is printed, and a plurality of one-side files for printing the one side and the one side file The other side file is set to the same number as the one side file, and the other side file for printing the other side is provided, and one side print data for the number of pages to be printed is stored in the plurality of one side files. Each one-side mark stored in each one-side file of Identification information for identifying the data from the other one-side print data is added to the data, and one-side printing data and identification information in the selected one-side file are printed on one side of the substrate Printing means, reading means for reading the identification information printed on the one side by the one-side printing means, storage means for reading and storing identification information from the selected one-side file, and the reading means A comparison unit that compares the read identification information with the identification information of the one-side print data stored by the storage unit, and identification information that is not to be printed is included in the read identification information based on the comparison result of the comparison unit. If it is determined that there is identification information that is not to be printed by the non-printing object determination means that determines whether there is a print object, and the non-printing object determination means, the printed matter that is not to be printed is Characterized in that it comprises means for creating a list, a.

In the printing machine according to the present invention, a sheet feeding unit for feeding a sheet-like printed material to the downstream side in the conveying direction, a printing unit disposed on the downstream side in the conveying direction of the sheet feeding unit, and the printing unit And a paper discharge unit disposed on the downstream side of the printing unit in the conveyance direction downstream of the printed unit, and printing on one of the front and back sides of the plurality of substrates is completed. After the printed matter discharged from the paper discharge unit is set in the paper feed unit, the other side is printed, and a plurality of one-side files for printing the one side and the one side file The other side file is set to the same number as the one side file, and the other side file for printing the other side is provided, and one side print data for the number of pages to be printed is stored in the plurality of one side files. Each one-side mark stored in each one-side file of Identification information for identifying the data from the other one-side print data is added to the data, and one-side printing data and identification information in the selected one-side file are printed on one side of the substrate Printing means, reading means for reading the identification information printed on the one side by the one-side printing means, storage means for reading and storing identification information from the selected one-side file, and the reading means A comparison unit that compares the read identification information with the identification information of the one-side print data stored by the storage unit, and an identification in which the read identification information is stored in the storage unit based on the comparison result of the comparison unit. Insufficient printing judgment means for judging whether printing is insufficient, which is more than information, and when it is judged by the printing insufficiency judging means that printing is insufficient Means for creating a list of pages with insufficient printing, duplicate page determination means for determining whether there is a duplicate page in the printed matter based on the comparison result of the comparison means, and duplicate pages by the duplicate page determination means If it is determined that there is an identification information, it is determined whether or not there is identification information not to be printed among the read identification information, based on the means for creating a list of duplicate pages and the comparison result of the comparison means. And a means for creating a list of printed materials not to be printed when the printing object nondetermination means determines that there is identification information not to be printed. It features .

  According to the present invention, by using the identification information required when managing print data, it is possible to prevent the load on the control unit from being large and whether the printed content of the printed matter is correctly printed. It is possible to provide a printing machine that can be reliably confirmed.

1 is a schematic overall side view of a printing press of the present invention. It is a top view of the feeder board of a paper feeding part. It is the sectional view on the AA line in FIG. It is a flowchart which shows operation | movement of the control part with which a printing press is equipped. It is a flowchart which shows the operation | movement of the continuation of FIG. It is a block diagram which shows the structure in the control part of a printing press. It is an image figure of the back side printing data of a calendar. It is an image figure of the back side printing data of a flyer. It is a front and back file name comparison table.

  Hereinafter, a printing machine according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the printing press 1 is an apparatus installed on an installation surface 2 and performing electronic printing using liquid toner. The printing press 1 feeds a sheet (a sheet of printing material, also referred to as a printing sheet, hereinafter referred to as a printing sheet) 3 which is a sheet-like printed material to a downstream side in the transport direction (hereinafter simply referred to as a “downstream side”). The printing unit 5 disposed downstream of the sheet feeding unit 4, the fixing unit 6 disposed downstream of the printing unit 5, and the paper discharge unit 7 disposed further downstream of the fixing unit 6 Is equipped.

  The sheet feeding unit 4 is a portion for feeding the print sheet 3 toward the printing unit 5. The printing unit 5 is a portion to which multi-color printing using liquid toner is performed on one side (front side or back side) of the printing paper 3. The fixing unit 6 is a portion for fixing the printing applied to the printing paper 3 to the printing paper 3. The paper discharge unit 7 is a portion for stocking the printing paper 3 after fixing of printing.

  The paper feed unit 4 also includes a stacking unit 8 for stacking the printing paper 3 and a paper feeding feeder 9 for feeding the printing paper 3 stacked on the stacking unit 8 from the top to the printing unit 5. And have. A paper feed cylinder 10 is disposed at the downstream end of the paper feed feeder 9. As shown in FIGS. 2 and 3, the sheet feeding feeder 9 is provided on a feeder board 9A and a feeder board 9A, and is a pair of suctions for holding the printing sheet 3 delivered from the stacking unit 8 and transporting it to the downstream side. Tapes 9B and 9B are provided. An arrow P indicates the transport direction of the printing paper 3.

  The printing unit 5 has an upstream side in the transport direction (hereinafter simply referred to as “upstream side”) so that liquid toners of four colors, for example, cyan, magenta, yellow and black can be attached to the surface of the printing paper 3 respectively. It is comprised from the 1st colored part 51 for each color, the 2nd colored part 52, the 3rd colored part 53, and the 4th colored part 54 which were arranged towards the lower stream side from the above. The first colored unit 51 to the fourth colored unit 54 respectively include a plurality of toner supply cylinders 11 and a printing unit pressure cylinder (charging cylinder) 12, and the printing unit pressure cylinders 12 adjacent to each other on the upstream side and downstream side In between, the printing unit transfer cylinder 13 is disposed.

  The fixing unit 6 transfers the printing sheet 3 from the printing unit impression cylinder 12 on the most downstream side to the fixing unit 6, and the endless sheet that receives and conveys the printing sheet 3 from the fixing unit transfer cylinder 14. , A drive sprocket 16 and a driven sprocket 17 around which the chain 15 is wound, and a drying device 18 for drying and fixing the liquid toner adhering to the printing paper 3.

  The paper discharge unit 7 has a structure conventionally used, and is a structure provided with a chain type gripper 19. A chain-type gripper 19 is wound around the transfer sprocket 20 and the end sprocket 21 disposed downstream thereof, and the grip of the chain-type gripper 19 is released until the end of the paper discharge unit 7 is reached. Thus, the printing paper 3 falls and is stacked on the stock unit 22.

  The printing press 1 configured as described above includes the first coloring unit 51, the second coloring unit 52, and the third printing unit 3 conveyed from the paper feeding feeder 9 of the paper feeding unit 4 toward the printing unit 5. A liquid toner (not shown) conveyed to the colored portion 53 and the fourth colored portion 54 and transferred to the electrostatic latent image formed on the surface of the toner supply cylinder adjacent to the printing portion pressure cylinder 12 of each colored portion 51 to 54. ) Is transferred onto the surface of the printing paper 3 on the printing unit impression cylinder 12.

  Thereafter, the printing paper 3 to which the liquid toner has been transferred in the printing unit 5 is conveyed to the fixing unit 6, and the toner transferred onto the surface of the printing paper 3 is fixed on the surface by the heat of the drying device 18. Then, the fixed print sheet 3 (printed print sheet 3) is conveyed to the sheet discharge unit 7 and stacked on the stock unit 22.

  In the printing press 1 configured as described above, in addition to the printed matter of one group consisting of a plurality of sheets (or one sheet may be printed) on which both front and back sides are printed, the printing contents different from the printed matter on the front and back sides It is used when preparing the printed matter of another group consisting of a plurality of sheets (may be one sheet), and to prepare the printed matter of a plurality of groups, one side of all the printing paper 3 to be printed ( Here, after printing on the back side is completed, printing on the other side is performed. Examples of the printed matter of a plurality of groups having different printed contents on which the front and back sides are printed include, for example, a calendar, a flyer, a catalog, and a direct mail for mailing.

  Specifically, the printing machine is provided with a control unit 28 (see FIG. 6), and the control unit 28 is provided with a plurality of one-side files (hereinafter referred to as back side files) and the other side files of the same number as back side files. It is stored in association with (hereinafter referred to as a front side file). Although this relationship will be described later, for example, the characters BK on the back side and FT on the front side are attached to file names so that they can be distinguished. Each back side file stores a plurality of (or single) back side print data of different print contents, and each front side file has the same number of front side print data of different print contents as the back side print data (back side In the case where there are a plurality of side print data, a plurality of the same number of print data and a single back side print data are stored. Further, identification information for identifying other back side print data is added to each of all the back side print data. This identification information is obtained by encoding the file name of the one-side file and the page number attached to the file name, and a two-dimensional code is used here. The back side print data and the front side print data are data composed of one or more of an image, a figure, a character, a symbol and the like.

  In addition, as shown in FIG. 6, the printing press 1 includes a one-side printing unit 23, a other-side printing unit 24, a reading unit 25 attached to the sheet feeding unit 4, a storage unit 26, and a comparison unit 27. , Extraction means 29 and judgment means 30.

  The one-side printing unit 23 is a unit that selects a specific back side file to be printed and prints back side print data and a two-dimensional code in the back side file on one side of the printing paper 3.

  The other side printing means 24 is a means for printing the front side printing data of the front side file extracted by the extracting means 29 described later on the front side of the printing paper 3 on which the back side is printed.

  The reading means 25 comprises a two-dimensional code reader comprising a light source for irradiating light to the two-dimensional code printed on the printing paper 3 and an imaging unit for imaging the two-dimensional code by the light emitted from the light source There is. The two-dimensional code reader 25 is, as shown in FIGS. 2 and 3, two of the printing sheets 3 fed by the sheet feeding feeder 9 through a rectangular opening 9K formed in the feeder board 9A of the sheet feeding feeder 9. Used to detect dimensional code and understand coded information.

  The storage unit 26 stores the file name, page number, and printing order of the back side print data printed by the back side printing unit 23. When the number of printed printing sheets 3 is one, only the file name and the page number are stored.

  The comparison means 27 reads the file name and page number obtained by decoding the two-dimensional code read by the reading means 25 and the reading order of the two-dimensional code, and the file name and page number of the back side print data stored by the storage means 26. And a means to compare with the memory order. When one sheet of printed printing paper 3 is used, the file name and page number obtained by decoding the read two-dimensional code are compared with the stored file name and page number.

  The extraction means 29 is a means for extracting the front side file associated with the back side file based on the selected back side file.

  The determination unit 30 is a unit that determines whether printing is correct based on the comparison result of the comparison unit 27.

  The process for printing by the control unit 28 including the various means will be described based on the flowcharts shown in FIGS. 4 and 5.

  First, as the printed matter, two printed matter of the calendar and the flyer among the aforementioned printed matter will be described as an example. First, front side printing data and back side printing data consisting of a plurality of pages are created (see steps S1 and S2). The front side print data has a plurality of (two calendars and two flyers), and provisionally creates data with A1 as the calendar and A2 as the flyer. This A1 creates six pages of data from January to June. A2 creates three pages of data. Further, the back side print data has the same number of data as the front side print data. Temporarily create a data with B1 as a calendar and B2 as a flyer. This B1 creates data for six pages from July to December. B2 creates three pages of data corresponding to the front side data. The print image of each back side print data includes a two-dimensional code obtained by encoding the file name and the page number. For example, FIG. 7 shows an image of the back side printing data of the first page (July) of the back side of the calendar. This is the case where the file name CAL_BK.docx and the page number 001 are encoded. G1 in FIG. 7 indicates an image portion. Further, FIG. 8 shows an image of the back side print data of the first page of the leaflet. This is the case where the file name CHI_BK.docx and the page number 001 are encoded. G2 in FIG. 8 indicates an image portion. Incidentally, “.docx” which constitutes a part of the file names in FIG. 7 and FIG. 8 is an extension of data. Here, the file name on the front side is made to correspond to the file name on the back side, such as CAL_BK.docx or CHI_BK.docx, as CAL_FT.docx or CHI_FT.docx.

  As described above, the file name has regularity so that the combination (control) of the file name of the back side print data and the file name of the front side print data can be grasped (see step S3). That is, "FT" is added to the front side file name, and "BK" is added to the back side file, so that the file names of the front and back sides are paired.

  After the creation of the front and back data is completed, the operator selects the back side print data file to be printed by the printing press 1, and the control unit 28 outputs a print signal to the printing press 1 based on the selection signal. The machine 1 prints (one-side printing means 23, see step S4). If multiple files are selected, the first page of the second file is printed after the last page of the first file. In this way, back side print data of all pages are printed. (Here, there are 6 pages for A1 and 3 pages for A2, so a total of 9 pages = 9 sheets is printed.) Here, the case where multiple files are selected is shown, but a single file is selected and printed. May be It is also possible to set printing conditions before starting printing after selecting the back side print data file. As the printing conditions, for example, among A1 (6 pages), only pages 2 to 4 (3 pages) are printed, or A2 (3 pages) is not printed from the first page 3 Printing from the page (printing in the order of P3, P2 and P1) can be assumed. These printing conditions are also stored, and when printing on the front side by selecting a file of printing data on the front side, the front and back printing of each page can be printed correctly by applying the stored printing conditions as they are. it can.

When printing is performed, the file name of the back side print data used for printing and the printed page number are stored in the control unit 28 of the printing press 1 in the order of printing. For example, it is assumed that A1 is data for six pages and the file name is tentatively "CAL_BK.docx". Also, assume that A2 is data for three pages and the file name is tentatively "CHI_BK.docx". in this case,
CAL_BK.docx / 001 (first page), CAL_BK.docx / 002 (second page),
CAL_BK.docx / 003 (page 3), CAL_BK.docx / 004 (page 4),
CAL_BK.docx / 005 (Page 5), CAL_BK.docx / 006 (Page 6)
CHI_BK.docx / 001 (page 7), CHI_BK.docx / 002 (page 8),
CHI_BK.docx / 003 (page 9)
Thus, information of 9 pages in total for 9 pages (the file name of the back side print data, page number, printing order) is stored (see step S5).

  Based on the file name selected at the time of printing on the back side in step S4, the file name of the print data on the front side is obtained according to the relationship of the file names in step S3. When a plurality of back side print data files are selected, the file names of the same number of front side print data are obtained (see step S6). Specifically, when the back surface file name of the calendar is CAL_BK.docx, it becomes the front surface file name of CAL_FT.docx, and when the back surface file name of the flyer is CHI_BK.docx, it becomes the front surface file name of CHI_FT.docx .

  Next, in order to print the image of the selected file, the printing paper 3 set in the paper feeding unit 4 is supplied to the printing machine 1. Specifically, the printing paper 3 loaded in the stock unit 22 of the paper discharge unit in step S4 is set in the paper feeding unit 4 by turning over the front and back without changing the order. At this time, the two-dimensional code printed on the back side of each print sheet is read one by one, and a character string obtained by decoding the two-dimensional code for each sheet is stored in the printing press 1. If all the printing paper 3 is supplied in the correct order (the same order as printing the back side), the data should be in the order of the file name and page number stored in step S5. The two-dimensional code is read and printed by the other side printing means 24 on the surface of all the printing paper 3 supplied to the printing machine 1, and the printing is completed (see step S7).

  Subsequently, the comparison means 27 compares the two-dimensional code read at step S7 with the two-dimensional code of the list created at step S5 (see step S8).

  That is, the file name and page number obtained by decoding the read two-dimensional code, the information of the printing order, and the print file name, page number and the information of the printing order created in step S5 are compared and the comparison result To determine if the printing was done correctly. For example, it is checked whether the read side information is insufficient (insufficient printing) (refer to step S9), and in the case where the information is insufficient, the insufficient printing (an unprinted image is present) It is determined that the printing is insufficient, and a list of printing shortage pages is created (see step S10). Further, as an example of determining whether printing has been correctly performed, it is checked whether there is a duplicate page (step S11), and in the case of duplication, for example, printing paper at the time of test printing is mixed It is determined that there is a page, and a list of duplicate pages is created (step S12). Furthermore, as an example of determining whether printing is correctly performed, it is checked whether there is a two-dimensional code of information not included in the information of the file name and page number to be read (step S13), and other two-dimensional codes If there is a problem, it is determined that printing sheets not to be printed are mixed, and a list of printing sheets not to be printed is created (step S14).

  As described above, by using identification information required when managing print data, the load on the control unit 28 can be reduced as compared with the case where other data is created separately from the print data. it can. Moreover, the identification information of the one-side print data when printed by the printing machine is stored, and it is determined whether the identification information of the stored one-side print data matches the identification information read by the reading means. By judging by the control unit 28, it can be surely confirmed whether the printing on the front and back sides is the same, whether there is an excess or deficiency, or a mismatch. In addition, when there is a plurality of one-side print data, it is checked whether the printing on the front and the back is the same, by checking whether the printing order of the identification information and the reading order of the identification information also match. It can be confirmed more reliably. In this case, it is determined whether printing has been correctly performed by checking whether the printing on the front and back sides is in agreement, excess or deficiency, or inconsistencies.

  Further, the control unit 28 extracts the other side file related to the one side file based on the selected one side file, and sets the other side print data of the extracted other side file to the other side of the printing material Printing eliminates the need for the operator to create a list for printing the other side.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention. For example, the printed matter may be something other than a calendar, a flyer, a catalog, or direct mail for mailing. That is, the present invention covers all printing on both sides.

  In the above embodiment, the liquid toner type digital printer which applies liquid toner to printing paper through a cylinder is shown as a printing machine, but it is an inkjet digital printer which sprays ink directly on printing paper. It may be a digital printer that combines them.

  In the above embodiment, the front side print data and the back side print data are configured to be associated with different file names (specifically, identifiers of FT and BK), but as shown in FIG. The side file name and the back side file name may be tabulated so as to be in a one-to-one relationship and stored in the control unit 28 of the printing press 1. If configured in this way, for example, after printing the ○ -like flyer (sushi photo) of the front side printing data of No. 1 on the front side on one side of the printing paper 3, the control is performed based on the front side file name. The control unit 28 can extract the sushi back (price and ordering method) from the front side to obtain the back side file name for printing the other side of the printing paper 3. In the embodiment, after the back surface printing is performed, the front surface printing is performed. However, after the front surface printing is performed as described above, the back surface printing may be performed.

  Moreover, in the above-mentioned embodiment, although a two-dimensional code was used as identification information, a bar code and a character code may be used, and it is also possible to combine and use a plurality of various codes.

  DESCRIPTION OF SYMBOLS 1 ... printing machine, 2 ... installation side, 3 ... sheet (printing paper), 4 ... paper feeding unit, 5 ... printing unit, 6 ... fixing unit, 7 ... discharge unit, 8 ... stacking unit, 9 ... supply Paper feeder, 9A: feeder board, 9B: suction tape, 9K: opening, 10: paper feed cylinder, 11: toner supply cylinder, 12: printing unit impression cylinder, 13: printing unit transfer cylinder, 14: fixing unit transfer cylinder, DESCRIPTION OF SYMBOLS 15 Chain ... 16 ... driving sprocket, 17 ... driven sprocket, 18 ... drying device, 19 ... chain gripper, 20 ... passing sprocket, 21 ... end sprocket, 22 ... stock part, 23 ... one side printing means (back side Printing means), 24 ... Other side printing means (front side printing means), 25 ... Reading means (two-dimensional code reader), 26 ... Storage means, 27 ... Comparison means, 28 ... Control part, 29 ... Extraction means, 30 ... Judgment means, 51 to 54 ... colored parts

Claims (3)

A paper feed unit for feeding a sheet-like printed material to the downstream side in the transport direction, a printing unit disposed downstream of the paper feed unit in the transport direction, and printed matter printed by the printing unit And a paper discharge unit disposed downstream of the paper conveyance direction in the conveyance direction,
Configured to print the other side after completing printing on one of the front and back sides of a plurality of substrates and setting the printed matter discharged from the paper discharge unit in the paper feeding unit; A plurality of one-side files for printing the one side and a other-side file set to the same number as the one-side file for printing the other side, the plurality of one-side files being One-side print data corresponding to the number of pages to be printed is stored, and identification information for identifying the one-side print data is added to each one-side print data stored in each of the plurality of one-side files. Has been
One-side printing means for printing one-side print data and identification information in the selected one-side file on one side of the substrate;
Reading means for reading the identification information printed on the one side by the one side printing means;
Storage means for reading out and storing identification information from within the selected one-side file;
Comparing means for comparing the identification information read by the reading means with the identification information of the one-side print data stored by the storage means;
Printing shortage determination means for determining whether the read identification information is insufficient for printing than the identification information stored in the storage means based on the comparison result of the comparison means;
A means for creating a list of print deficient pages if it is determined by the print deficient determining means that printing is insufficient;
A printing machine characterized by comprising. A paper feed unit for feeding a sheet-like printed material to the downstream side in the transport direction, a printing unit disposed downstream of the paper feed unit in the transport direction, and printed matter printed by the printing unit And a paper discharge unit disposed downstream of the paper conveyance direction in the conveyance direction,
Configured to print the other side after completing printing on one of the front and back sides of a plurality of substrates and setting the printed matter discharged from the paper discharge unit in the paper feeding unit; A plurality of one-side files for printing the one side and a other-side file set to the same number as the one-side file for printing the other side, the plurality of one-side files being One-side print data corresponding to the number of pages to be printed is stored, and identification information for identifying the one-side print data is added to each one-side print data stored in each of the plurality of one-side files. Has been
One-side printing means for printing one-side print data and identification information in the selected one-side file on one side of the substrate;
Reading means for reading the identification information printed on the one side by the one side printing means;
Storage means for reading out and storing identification information from within the selected one-side file;
Comparing means for comparing the identification information read by the reading means with the identification information of the one-side print data stored by the storage means;
A non-print target determination unit that determines whether there is identification information other than the print target among the read identification information based on the comparison result of the comparison unit;
A means for creating a list of printed matter not to be printed when it is judged by the non-printing object judgment means that there is identification information not to be printed object;
A printing machine characterized by comprising. A paper feed unit for feeding a sheet-like printed material to the downstream side in the transport direction, a printing unit disposed downstream of the paper feed unit in the transport direction, and printed matter printed by the printing unit And a paper discharge unit disposed downstream of the paper conveyance direction in the conveyance direction,
Configured to print the other side after completing printing on one of the front and back sides of a plurality of substrates and setting the printed matter discharged from the paper discharge unit in the paper feeding unit; A plurality of one-side files for printing the one side and a other-side file set to the same number as the one-side file for printing the other side, the plurality of one-side files being One-side print data corresponding to the number of pages to be printed is stored, and identification information for identifying the one-side print data is added to each one-side print data stored in each of the plurality of one-side files. Has been
One-side printing means for printing one-side print data and identification information in the selected one-side file on one side of the substrate;
Reading means for reading the identification information printed on the one side by the one side printing means;
Storage means for reading out and storing identification information from within the selected one-side file;
Comparing means for comparing the identification information read by the reading means with the identification information of the one-side print data stored by the storage means;
Printing shortage determination means for determining whether the read identification information is insufficient for printing than the identification information stored in the storage means based on the comparison result of the comparison means;
A means for creating a list of print deficient pages if it is determined by the print deficient determining means that printing is insufficient;
Duplicate page determination means for determining whether there is a duplicate page in the printed matter based on the comparison result of the comparison means;
A means for creating a list of duplicate pages if it is determined by the duplicate page determination means that there are duplicate pages;
A non-print target determination unit that determines whether there is identification information other than the print target among the read identification information based on the comparison result of the comparison unit;
A means for creating a list of printed matter not to be printed when it is judged by the non-printing object judgment means that there is identification information not to be printed object;
A printing machine characterized by comprising.

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