Inspection apparatus, image forming system, and inspection program

Abstract

To provide an inspection device which can make proper measures according to a type of a failure of a printed matter, and to provide an image formation system and an inspection program.SOLUTION: An inspection device is an inspection device of printed matters whose images are output by an image formation part. The inspection device includes: an inspection part which inspects a failure of each printed matter based on a reading result of the printed matter; and a switch part which switches control of the image formation part according to a type of the failure inspected by the inspection part.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an inspection apparatus, an image forming system, and an inspection program.

Background Art

[0002] Conventionally, an inspection apparatus for inspecting whether there is a defect in a printed matter of an image forming apparatus is known. By using such an inspection apparatus, it is possible to reduce the man-hours, shorten the inspection time, and reduce the number of preliminary prints, as compared with the case where the printed matter is inspected manually. In particular, in the case of an inspection apparatus that can be connected to an image forming apparatus, since the inspection can be performed in real time, the above effects become more remarkable.

[0003] For example, Patent Document 1 discloses a configuration in which, when a sheet on which an image is formed is determined to be a defective page, the sheet corresponding to the defective page and other sheets being printed or conveyed in the machine are discharged as soiled sheets. In this configuration, by changing the discharge destination of the soiled sheets from the discharge destination of the printed matter related to normal pages, it is easy for the user to remove the soiled sheets. Also, when the cause of the soiled sheets is a printing defect such as dirt, printing can be continued by reprinting without involving manual labor.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in the case of printing such as variable printing in which different management numbers are assigned to each printed matter, it is necessary to check whether the management numbers assigned to each printed matter are printed in order in the inspection.

[0006] In this case, when an inspection is performed by the inspection apparatus and a discrepancy in the management number occurs, the printed matter is regarded as defective. However, in most cases, such a defect is due to a deficiency in the image data. Therefore, for example, if the configuration is such that reprinting is performed when there is a defect in the printed matter, in the inspection of the printed matter related to the reprinting, the printed matter will not become the desired printed matter, and the defect in the printed matter will occur again, and ultimately, reprinting will be repeated.

[0007] That is, since the configuration described in Patent Document 1 takes the same action regardless of the type of defect in the printed matter, there is room for improvement as a configuration capable of inspecting the printed matter.

[0008] An object of the present invention is to provide an inspection apparatus, an image forming system, and an inspection program capable of taking appropriate actions according to the type of defect in the printed matter.

Means for Solving the Problems

[0009] The inspection apparatus according to the present invention is an inspection apparatus for a printed matter output with an image by an image forming unit, an inspection unit that inspects defects in the printed matter based on the reading result of the printed matter, a unit that interrupts the inspection of the defect in the printed matter based on the result inspected by the inspection unit Switch and is provided with After interrupting the inspection of the defect in the printed matter, the inspection apparatus performs one of a plurality of controls including control to resume the printing job in progress from the interruption factor page that was the cause of the interruption of the inspection of the defect in the printed matter, and control not to resume the printing job in progress.

[0010] The image forming system according to the present invention is an image forming unit that forms a printed matter by outputting an image to a recording medium, an inspection unit that inspects defects in the printed matter based on the reading result of the printed matter, and based on the result inspected by the inspection unit, interrupts the inspection of the defect in the printed matterSwitch a unit, and an inspection device having the same, comprising After interrupting the inspection of the defects of the printed matter, the inspection device performs one of a plurality of controls including control to resume the printing job in progress from the interruption factor page that caused the interruption of the inspection of the defects of the printed matter, and control not to resume the printing job in progress.

[0011] The inspection program according to the present invention is an inspection program for a printed matter output as an image by an image forming unit, to a computer an inspection process for inspecting defects of the printed matter based on the reading result of the printed matter; a switching process for interrupting the inspection of the defects of the printed matter based on the result inspected in the inspection process; After interrupting the inspection of the defects of the printed matter, the Interruption cause process of performing one of a plurality of controls including control to resume the printing job in progress from the page that caused the interruption of the inspection of the defects of the printed matter, and control not to resume the printing job in progress. is executed.

Advantages of the Invention

[0012] According to the present invention, appropriate countermeasures can be taken according to the type of defect of the printed matter.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

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Figure 11

Embodiments for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram schematically showing the overall configuration of an image forming system 100 including an inspection apparatus 200 according to an embodiment of the present invention. FIG. 2 is a diagram showing a main part of the control system of the image forming apparatus 1.

[0015] As shown in FIG. 1, the image forming system 100 is configured by connecting an image forming apparatus 1 and a post-processing apparatus 2 in order from the upstream side along the conveyance direction of a sheet S as an example of a recording medium.

[0016] The image forming apparatus 1 is an intermediate transfer type color image forming apparatus that uses electrophotographic process technology. That is, the image forming apparatus 1 primarily transfers the Y (yellow), M (magenta), C (cyan), and K (black) toner images formed on the photoreceptor drum 413 to the intermediate transfer belt 421, overlaps the four-color toner images on the intermediate transfer belt 421, and then secondarily transfers them to the paper S sent out from the paper feed tray units 51a to 51c to form an image.

[0017] In addition, the image forming apparatus 1 employs a tandem system in which the photoreceptor drums 413 corresponding to the four colors of YMCK are arranged in series in the running direction of the intermediate transfer belt 421, and the respective color toner images are sequentially transferred to the intermediate transfer belt 421 in one procedure.

[0018] As shown in FIG. 2, the image forming apparatus 1 includes an image reading unit 10, an operation display unit 20, an image processing unit 30, an image forming unit 40, a paper conveyance unit 50, a fixing unit 60, and a control unit 101.

[0019] The control unit 101 includes a CPU (Central Processing Unit) 102, a ROM (Read Only Memory) 103, a RAM (Random Access Memory) 104, etc. The CPU 102 reads out a program corresponding to the processing content from the ROM 103 and expands it in the RAM 104, and centrally controls the operations of each block of the image forming apparatus 1 in cooperation with the expanded program. At this time, various data stored in the storage unit 72 are referred to. The storage unit 72 is composed of, for example, a non-volatile semiconductor memory (so-called flash memory) or a hard disk drive.

[0020] The control unit 101 transmits and receives various data to and from an external device (such as a personal computer) connected to a communication network such as a LAN (Local Area Network) or WAN (Wide Area Network) via the communication unit 71. For example, the control unit 101 receives image data (input image data) transmitted from an external device and forms an image on the paper S based on this image data. The communication unit 71 is composed of a communication control card such as a LAN card, for example.

[0021] As shown in FIG. 1, the image reading unit 10 includes an automatic document feeder 11 called an ADF (Auto Document Feeder) and a document image scanning device 12 (scanner), etc.

[0022] The automatic document feeder 11 conveys the document D placed on the document tray by a conveyance mechanism and sends it to the document image scanning device 12. With the automatic document feeder 11, it becomes possible to continuously read the images (including both sides) of a large number of documents D placed on the document tray all at once.

[0023] The document image scanning device 12 optically scans the document conveyed onto the contact glass from the automatic document feeder 11 or the document placed on the contact glass, forms the reflected light from the document on the light receiving surface of a CCD (Charge Coupled Device) sensor 12a, and reads the document image. The image reading unit 10 generates input image data based on the reading result by the document image scanning device 12. Predetermined image processing is performed on this input image data in the image processing unit 30.

[0024] As shown in FIG. 2, the operation display unit 20 is composed of, for example, a liquid crystal display (LCD) with a touch panel, and functions as a display unit 21 and an operation unit 22. The display unit 21 performs displays such as various operation screens, the state of an image, and the operation status of each function according to a display control signal input from the control unit 101. The operation unit 22 is provided with various operation keys such as numeric keys and a start key, accepts various input operations by the user, and outputs an operation signal to the control unit 101.

[0025] The image processing unit 30 includes a circuit or the like that performs digital image processing according to initial settings or user settings. For example, the image processing unit 30 performs gradation correction based on gradation correction data (gradation correction table) under the control of the control unit 101. In addition to gradation correction, the image processing unit 30 performs various correction processes such as color correction and shading correction, and compression processing. Based on the image data subjected to these processes, the image forming unit 40 is controlled.

[0026] As shown in FIG. 1, the image forming unit 40 forms an image on the paper S based on the settings of a print job. The image forming unit 40 includes image forming units 41Y, 41M, 41C, 41K for forming an image with each colored toner of Y component, M component, C component, and K component, an intermediate transfer unit 42, and the like based on the input image data.

[0027] The image forming units 41Y, 41M, 41C, 41K for the Y component, M component, C component, and K component have the same configuration. For the sake of convenience of illustration and description, common components are denoted by the same reference numerals, and when distinguishing each of them, Y, M, C, or K is added to the reference numeral. In FIG. 1, only the components of the image forming unit 41Y for the Y component are denoted by reference numerals, and the components of the other image forming units 41M, 41C, 41K are omitted.

[0028] The image forming unit 41 includes an exposure device 411, a developing device 412, a photosensitive drum 413, a charging device 414, a drum cleaning device 415, and the like.

[0029] The photosensitive drum 413 is an organic photosensitive member in which a photosensitive layer made of a resin containing an organic photoconductor is formed on the outer peripheral surface of a drum-shaped metal substrate, for example.

[0030] The control unit 101 rotates the photosensitive drum 413 at a constant peripheral speed by controlling the drive current supplied to a drive motor (not shown) that rotates the photosensitive drum 413.

[0031] The charging device 414 is, for example, a charging charger, and uniformly charges the surface of the photosensitive drum 413 having photoconductivity to a negative polarity by generating corona discharge.

[0032] The exposure device 411 is composed of, for example, a semiconductor laser, and irradiates the photosensitive drum 413 with laser light corresponding to an image of each color component. As a result, an electrostatic latent image of each color component is formed in the image area irradiated with the laser light on the surface of the photosensitive drum 413 due to the potential difference from the background area.

[0033] The developing device 412 is a two-component reversal type developing device, and visualizes the electrostatic latent image by attaching a developer of each color component to the surface of the photosensitive drum 413 to form a toner image.

[0034] A developing bias in which a DC developing bias having the same polarity as the charging polarity of the charging device 414 or a DC voltage having the same polarity as the charging polarity of the charging device 414 superimposed on an AC voltage is applied to the developing device 412. As a result, reversal development in which toner is attached to the electrostatic latent image formed by the exposure device 411 is performed.

[0035] The drum cleaning device 415 is brought into contact with the surface of the photosensitive drum 413, and has a flat drum cleaning blade made of an elastic body or the like, and removes the toner remaining on the surface of the photosensitive drum 413 without being transferred to the intermediate transfer belt 421.

[0036] The intermediate transfer unit 42 includes an intermediate transfer belt 421, a primary transfer roller 422, a plurality of support rollers 423, a secondary transfer roller 424, a belt cleaning device 426, and the like.

[0037] The intermediate transfer belt 421 is formed of an endless belt and is looped around a plurality of support rollers 423. At least one of the plurality of support rollers 423 is a driving roller, and the others are driven rollers. For example, it is preferable that a roller 423A disposed on the downstream side in the belt running direction from the primary transfer roller 422 for the K component is a driving roller. Thereby, it becomes easier to keep the running speed of the belt in the primary transfer section constant. When the driving roller 423A rotates, the intermediate transfer belt 421 runs at a constant speed in the direction of arrow A.

[0038] The intermediate transfer belt 421 is a belt having conductivity and elasticity, and has a high-resistance layer on its surface. The intermediate transfer belt 421 is rotationally driven by a control signal from the control unit 101.

[0039] The primary transfer roller 422 is disposed on the inner peripheral surface side of the intermediate transfer belt 421 facing the photosensitive drum 413 of each color component. By pressing the primary transfer roller 422 against the photosensitive drum 413 with the intermediate transfer belt 421 interposed therebetween, a primary transfer nip for transferring the toner image from the photosensitive drum 413 to the intermediate transfer belt 421 is formed.

[0040] The secondary transfer roller 424 is disposed on the outer peripheral surface side of the intermediate transfer belt 421 facing a backup roller 423B disposed on the downstream side in the belt running direction of the driving roller 423A. By pressing the secondary transfer roller 424 against the backup roller 423B with the intermediate transfer belt 421 interposed therebetween, a secondary transfer nip for transferring the toner image from the intermediate transfer belt 421 to the paper S is formed.

[0041] When the intermediate transfer belt 421 passes through the primary transfer nip, the toner image on the photoreceptor drum 413 is sequentially superimposed and primarily transferred onto the intermediate transfer belt 421. Specifically, a primary transfer bias is applied to the primary transfer roller 422, and charges of the opposite polarity to the toner are applied to the back side of the intermediate transfer belt 421, that is, the side that contacts the primary transfer roller 422, so that the toner image is electrostatically transferred onto the intermediate transfer belt 421.

[0042] After that, when the sheet S passes through the secondary transfer nip, the toner image on the intermediate transfer belt 421 is secondarily transferred onto the sheet S. Specifically, a secondary transfer bias is applied to the secondary transfer roller 424, and charges of the opposite polarity to the toner are applied to the back side of the sheet S, that is, the side that contacts the secondary transfer roller 424, so that the toner image is electrostatically transferred onto the sheet S. The sheet S onto which the toner image has been transferred is conveyed toward the fixing unit 60.

[0043] The belt cleaning device 426 removes the residual transfer toner remaining on the surface of the intermediate transfer belt 421 after secondary transfer.

[0044] The fixing unit 60 includes an upper fixing unit 60A having a fixing surface side member disposed on the fixing surface side of the sheet S, that is, the side where the toner image is formed, a lower fixing unit 60B having a back side support member disposed on the back side of the sheet S, that is, the side opposite to the fixing surface, and a heating source and the like. When the back side support member is pressed against the fixing surface side member, a fixing nip for sandwiching and conveying the sheet S is formed.

[0045] The fixing unit 60 fixes the toner image onto the sheet S by heating and pressing the sheet S onto which the toner image has been secondarily transferred and conveyed with the fixing nip. The fixing unit 60 is disposed as a unit within the fixing device F.

[0046] The upper fixing unit 60A includes an endless fixing belt 61 that is a fixing surface side member, a heating roller 62, and a fixing roller 63. The fixing belt 61 is stretched by the heating roller 62 and the fixing roller 63.

[0047] The lower fixing part 60B has a pressure roller 64 which is a back side support member. The pressure roller 64 forms a fixing nip for sandwiching and conveying the paper S between it and the fixing belt 61.

[0048] The paper conveyance unit 50 includes a paper feeding unit 51, a paper discharging unit 52, a conveyance path unit 53, etc. In the three paper feeding tray units 51a to 51c that constitute the paper feeding unit 51, papers S (standard papers, special papers) identified based on basis weight, size, etc. are stored for each preset type.

[0049] The conveyance path unit 53 has a plurality of conveyance roller pairs such as a registration roller pair 53a, and a normal conveyance path 53b that passes the paper S through the image forming unit 40 and the fixing unit 60 and discharges it outside the image forming apparatus 1.

[0050] The papers S stored in the paper feeding tray units 51a to 51c are sent out one by one from the top and conveyed to the image forming unit 40 by the conveyance path unit 53. In the image forming unit 40, the toner image on the intermediate transfer belt 421 is collectively secondarily transferred onto one side of the paper S, and a fixing process is performed in the fixing unit 60. The paper S on which the image is formed is discharged outside the apparatus by the paper discharging unit 52 having a paper discharging roller 52a.

[0051] The post-processing apparatus 2 includes an inspection apparatus 200 that takes in the paper S discharged from the image forming apparatus 1 and inspects the paper S (printed matter) on which an image has been output by the image forming unit 40. The inspection apparatus 200 includes a CPU, a ROM, a RAM, and input / output circuits (not shown). The inspection apparatus 200 is configured to inspect defects in the printed matter based on a preset program.

[0052] In addition, the post-processing device 2 is provided with a first tray 2A and a second tray 2B. On the first tray 2A, printed materials determined to be normal based on the inspection results of the inspection device 200 are discharged. On the second tray 2B, printed materials determined not to be normal based on the inspection results of the inspection device 200 are discharged. The inspection device 200 includes an acquisition unit 210, an inspection unit 220, a switching unit 230, a diagnosis unit 240, and a repair unit 250.

[0053] The acquisition unit 210 is a reading unit (such as a scanner, a camera, etc.) capable of reading the sheet S conveyed inside the post-processing device 2, and acquires the reading information of the sheet S.

[0054] The inspection unit 220 inspects whether there are printing defects based on the reading result of the sheet S. Specifically, the inspection unit 220 inspects whether there are defects in the printed material by comparing the reference image with the printed image (reading information) formed on the sheet S.

[0055] Defects in the printed material are, for example, predetermined image defects, inconsistencies in management numbers when different management numbers (management data) are attached to each page in a print job, etc.

[0056] Predetermined image defects are, for example, image defects where dirt occurs on the sheet S (hereinafter, "dirt"), image defects where there are missing parts in the printed image (hereinafter, "missing"), image defects where streaks (vertical lines, horizontal lines, etc.) occur in the printed image (hereinafter, "streaks"), image defects where dots (black dots, white dots, etc.) occur in the printed image (hereinafter, "dots"), etc. Note that the predetermined image defects may be other ones.

[0057] The reference image is, for example, an image obtained by the acquisition unit 210 reading a printed image formed on a predetermined sheet in advance. The image is an image without any defects in the printed material. Also, the reference image may be an image based on the image data in the image forming unit 40 of the image forming apparatus 1.

[0058] When the inspection unit 220 determines that the reference image and the printed image match, it determines that there is no defect in the printed matter. When the inspection unit 220 determines that the reference image and the printed image formed on the paper S do not match, it determines that there is a defect in the printed matter.

[0059] When the inspection unit 220 determines that there is a defect in the printed matter, it inspects the type of image defect in the printed matter. The inspection unit 220 detects the type of defect in the printed matter by detecting whether the image defect is any of dirt, chipping, streaks, and spots based on the difference between the printed image and the reference image. For these methods of detecting image defects, known techniques can be used.

[0060] In addition, when different management numbers (management data for managing the printed matter) are assigned to each page of the print job, the inspection unit 220 inspects whether there is a defect in the printed matter by comparing the management number with an inspection area that is part of the printed image of the printed matter. The inspection area is the area where the above management number is assigned in the printed image.

[0061] The above management number is stored in the storage unit 72 or the like in association with each page of the print job, for example. The inspection unit 220 determines whether the inspection number in the inspection area of the printed image on a predetermined page of the print job matches the management number corresponding to the predetermined page.

[0062] When the inspection unit 220 determines that the inspection number and the management number match, it determines that there is no defect in the printed matter. When the inspection unit 220 determines that the inspection number and the management number do not match, it determines that there is a defect in the printed matter. In this case, the inspection unit 220 detects a mismatch in management data as the type of printing defect.

[0063] In addition, when the inspection unit 220 detects the type of defect in the printed matter, it performs a notification process for the defect in the printed matter. As the notification process, for example, a process of storing the type of defect in a storage unit or the like so that the user can confirm it, a process of displaying the defect on a display unit or the like, a process of outputting the content of the defect by voice or the like, a process of outputting information on the content of the defect to an external device, etc., any process may be used as long as it can notify the user of the type of defect.

[0064] By doing so, the user can recognize the content of the defect in the printed matter.

[0065] The switching unit 230 outputs a command for switching the control of the image forming unit 40 of the image forming apparatus 1 toward the image forming apparatus 1 according to the type of defect in the printed matter inspected by the inspection unit 220. The command is output, for example, via a communication unit capable of transmitting and receiving data signals to and from the communication unit 71 of the image forming apparatus 1 or a network (not shown).

[0066] The switching unit 230 switches the control regarding printing of the image forming unit 40 (hereinafter, "printing control") based on a preset registered pattern. For example, in a setting screen (for example, the setting screen shown in FIG. 3) of a display unit (not shown) in the inspection apparatus 200, it is assumed that the printing control can be set for each type of defect in the printed matter. Examples of the printing control include printing continuation, printing interruption, and reprinting. Note that the setting screen may be that of the operation display unit 20 of the image forming apparatus 1 or that of an external device connected via a network.

[0067] Printing continuation means continuing the printing job. That is, when a defect for which printing continuation is set is detected, the switching unit 230 does not change the control of the image forming unit 40 and causes the printing in the printing job to be continued. Therefore, the page with the defect will be discharged to the first tray 2A as it is. That is, a printed matter having only a defect set as printing continuation is treated as a normal printed matter.

[0068] Print interruption means interrupting the print job. That is, when a defect for which print interruption is set is detected, the switching unit 230 stops the image forming unit 40 to interrupt the print job. The printed matter that caused the print interruption is discharged to the second tray 2B instead of the first tray 2A.

[0069] Reprinting means reprinting the page that caused the defect of the printed matter. That is, when a defect for which reprinting is set is detected, the switching unit 230 causes the page with the defect factor to be reprinted.

[0070] In this case, the page with the defect factor is discharged to the second tray 2B. Also, when the page with the defect factor is inspected by the inspection unit 220, the paper S that has already been supplied to the image forming apparatus 1 is also discharged to the second tray 2B. As a result, when the page with the defect factor is reprinted, the next page of the page will not be discharged to the first tray 2A. Therefore, the printed matter obtained by reprinting the page with the defect factor will not be discharged on the printed matter related to the next page of the page, so that the order of the pages in the first tray 2A will not be switched.

[0071] Note that, when the page with the defect factor is inspected by the inspection unit 220, the paper S that has already been supplied to the image forming apparatus 1 may also be inspected by the inspection unit 220. Also, when a defect corresponding to print interruption is detected in the page corresponding to the paper S, print interruption may be performed without reprinting. Regarding this inspection, it may be possible to set whether or not the inspection is performed by the user, or the inspection unit 220 may automatically perform the inspection.

[0072] For example, assume that the types of printing defects are dirt, chipping, streaks, spots, and mismatch (mismatch of control numbers). In the example of the setting screen shown in FIG. 3, dirt and chipping are set and registered for reprinting, streaks and spots are set for continuous printing, and mismatch is set for print interruption.

[0073] In this case, when the defect detected by the inspection unit 220 is dirt or chipping, the switching unit 230 discharges the printed matter related to the page that caused the defect to the second tray 2B and then reprints the page. When the defect detected by the inspection unit 220 is streaks or halos, the switching unit 230 continues the printing in the printing job. When the defect detected by the inspection unit 220 is a mismatch, the switching unit 230 interrupts the printing in the printing job.

[0074] By doing so, the switching unit 230 switches the printing control of the image forming unit 40 so as to perform either continuous printing, interrupted printing, or reprinting according to the type of defect of the printed matter. Thereby, in the present embodiment, it is possible to easily switch the printing control to an appropriate control according to the type of defect of the printed matter.

[0075] In addition, the switching unit 230 interrupts the printing control based on the number of times of reprinting. For example, on the setting screen shown in FIG. 3, a part where a number can be input is provided at the rightmost part in FIG. 3 so that the number of times of reprinting can be set. When reprinting is set on the setting screen, a number can be input in this part. For example, in FIG. 3, the number of times of reprinting is set to 4 times for both dirt and chipping for which reprinting is set.

[0076] By doing so, it is possible to suppress reprinting many times due to the same defect.

[0077] In addition, when the switching unit 230 interrupts the printing job, the switching unit 230 outputs a command to the image forming apparatus 1 to resume the printing job from the second page after the first page that was printed when the printing job was interrupted, resume the printing job from the third page that caused the interruption of the printing job, or cancel the printing job.

[0078] Specifically, after interrupting the printing job, the switching unit 230 resumes the printing job from the second page, resumes the printing job from the third page, or cancels the printing job, for example, when acquiring a signal related to control specified by the user or based on the diagnosis result by the diagnosis unit 240, and outputs a command to the image forming apparatus 1 to perform any of these operations.

[0079] For example, as shown in FIG. 4, when the printing job is interrupted, it is assumed that a selection screen for the operations of continuous resume, reprint resume, print cancellation, and diagnosis is displayed on the setting screen of the display unit (not shown) in the inspection apparatus 200. The setting screen may be that of the operation display unit 20 of the image forming apparatus 1 or that of an external device connected via a network.

[0080] Continuous resume means resuming the printing job from the second page after the first page that has been printed when the printing job was interrupted. Reprint resume means resuming the printing job from the third page that was the cause of the interruption of the printing job. Print cancellation means canceling the printing job. Diagnosis means performing a diagnosis process for defects in the printed matter by the diagnosis unit 240.

[0081] When the user selects any of continuous resume, reprint resume, and print cancellation, the switching unit 230 acquires a signal related to the control selected (specified) by the user and outputs a command related to the signal to the image forming apparatus 1.

[0082] When there is a command for continuous resume, the above-mentioned first page is discharged to the second tray 2B, but it is judged by the user as a normal printed matter. Therefore, a process may be executed to prompt the user to move the first page to the first tray 2A.

[0083] When the user selects diagnosis, the switching unit 230 outputs a command related to the control according to the diagnosis result of the diagnosis unit 240 to the image forming apparatus 1.

[0084] After the switching unit 230 interrupts the printing job, the diagnosis unit 240 diagnoses the defect of the printed matter when, for example, it acquires a signal related to a diagnosis command from the user. The diagnosis unit 240 outputs a command to form a chart image for specifying the cause of the defect of the printed matter, such as a halftone one, on the sheet S to the image forming apparatus 1.

[0085] Then, the diagnosis unit 240 analyzes the reading result of the chart image acquired by the acquisition unit 210 and determines whether the defect of the printed matter can be automatically repaired. Specifically, for example, when the type of the defect of the printed matter is streaks, the diagnosis unit 240 determines whether the defect (streaks) of the printed matter can be automatically repaired based on the period in which the streaks occur. Note that the determination criteria in the diagnosis unit 240 can be set as appropriate. Also, the sheet S on which the chart image is formed is discharged to the second tray 2B.

[0086] Note that during the diagnosis by the diagnosis unit 240, the inspection apparatus 200 preferably executes a process of notifying the user that the image forming apparatus 1 is stopped (during the diagnosis of the printed matter).

[0087] The repair unit 250 performs a repair process for the defect of the printed matter based on the diagnosis result of the diagnosis unit 240. Specifically, when the diagnosis unit 240 determines that the defect can be automatically repaired, the repair unit 250 outputs a command to repair the defect of the printed matter to the image forming apparatus 1.

[0088] As the repair process, for example, when the defect of the printed matter is a spot, a command to change the transfer voltage at the transfer nip, and when the defect of the printed matter is streaks, a command to automatically clean the charging device 414 are output to the image forming apparatus 1.

[0089] Also, when the diagnosis unit 240 determines that the defect of the printed matter cannot be automatically repaired, for example, the diagnosis unit 240 executes a process of notifying the user of the instruction information by displaying the instruction information for repairing the defect of the printed matter on a display unit or the like. The instruction information is information related to an instruction prompting the user to replace parts or clean parts by the user, for example.

[0090] Then, when the repair process by the repair unit 250 or an operation related to the repair of the printed matter based on the instruction information by the diagnosis unit 240 by the user is completed, the diagnosis unit 240 outputs a command to form a chart image for confirming that the defect of the printed matter has been repaired on the paper S to the image forming apparatus 1. Note that the completion of the operation related to the repair of the printed matter by the user is recognized, for example, when the inspection apparatus 200 acquires a signal output when the user presses a button for completing the operation.

[0091] Then, for example, when an instruction indicating that the defect of the printed matter in the chart image has been repaired is input to the inspection apparatus 200 by the user, the switching unit 230 outputs a command to resume the print job from the third page that caused the interruption of the print job to the image forming apparatus 1.

[0092] Also, when an instruction indicating that the defect of the printed matter in the chart has not been repaired is input to the inspection apparatus 200 by the user, the diagnosis unit 240 determines whether to cancel the print job or diagnose the defect of the printed matter again.

[0093] For example, when there is an instruction from the user to diagnose the defect of the printed matter, the diagnosis unit 240 determines to diagnose the defect of the printed matter again. When determined in this way, the diagnosis unit 240 diagnoses the cause of the defect of the printed matter again.

[0094] For example, when there is an instruction from the user to cancel the print job, the diagnosis unit 240 determines to cancel the print job. When determined in this way, the switching unit 230 outputs a command to cancel the print job to the image forming apparatus 1.

[0095] Next, an operation example when performing inspection control in the inspection apparatus 200 will be described. FIG. 5 is a flowchart showing an example of an operation example of inspection control in the inspection apparatus 200. The process in FIG. 5 is appropriately executed, for example, when the control unit 101 of the image forming apparatus 1 receives an execution command for a print job in the inspection apparatus 200.

[0096] As shown in FIG. 5, the inspection device 200 acquires the read information of the printed matter (step S101). After acquiring the read information of the printed matter, the inspection device 200 inspects for defects in the printed matter (step S102).

[0097] Then, the inspection device 200 determines whether there is a defect in the printed matter (step S103). As a result of the determination, if there is no defect in the printed matter (step S103, NO), the process transitions to step S112. On the other hand, if there is a defect in the printed matter (step S103, YES), the inspection device 200 executes a notification process (step S104).

[0098] Next, the inspection device 200 determines whether the print control set for the defect in the printed matter is continuous printing (step S105). As a result of the determination, if the print control is not continuous printing (step S105, NO), the inspection device 200 determines whether the print control set for the defect in the printed matter is print interruption (step S106).

[0099] As a result of the determination, if the print control is print interruption (step S106, YES), the inspection device 200 executes an interruption process for interrupting the print job (step S107). Details of the interruption process will be described later.

[0100] On the other hand, if the print control is not print interruption (step S106, NO), the inspection device 200 increments the number of reprints (step S108) and determines whether the number of reprints is less than the number limit (step S109).

[0101] As a result of the determination, if the number of reprints is not less than the number limit (step S109, NO), the inspection device 200 resets the number of reprints (step S110), and the process transitions to step S107.

[0102] On the other hand, when the number of reprints is less than the limit (step S109, YES), the inspection device 200 rewinds the pages in the print job (step S111), and the process returns to step S101. Rewinding the pages is a process of returning the pages to be printed in the print job to the page that caused the defect in the printed matter related to the reprint, or the page that caused the interruption of the printing defect related to the resumption of the reprint.

[0103] Returning to the determination in step S105, when print control is to continue printing (step S105, YES), the inspection device 200 continues the print job and determines whether the discharge of all subsequent pages of the page with a defect in the printed matter has been completed (step S112).

[0104] As a result of the determination, when the discharge of all pages has not been completed (step S112, NO), the process returns to step S101. On the other hand, when the discharge of all pages has been completed (step S112, YES), the inspection device 200 determines whether the printing of all pages of the print job has been completed or whether there is no next page (step S113). As a result of the determination, when the printing of all pages has not been completed or there is a next page (step S113, NO), the process returns to step S101. On the other hand, when the printing of all pages has been completed or there is no next page (step S113, YES), this control ends.

[0105] Next, an operation example when executing the control related to the interruption process in the inspection device 200 will be described. FIG. 6 is a flowchart showing an example of an operation example when executing the control related to the interruption process in the inspection device 200. The process in FIG. 6 is appropriately executed, for example, when the inspection device 200 executes the process of step S107 in FIG. 5.

[0106] As shown in FIG. 6, the inspection apparatus 200 determines whether or not an execution command to stop printing has been received (step S201). As a result of the determination, if an execution command to stop printing has not been received (step S201, NO), the inspection apparatus 200 determines whether or not an execution command to resume reprinting has been received (step S202).

[0107] As a result of the determination, if an execution command to resume reprinting has been received (step S202, YES), the process transitions to step S111 in FIG. 5, and the printing job is resumed (resume reprinting). On the other hand, if an execution command to resume reprinting has not been received (step S202, NO), the inspection apparatus 200 determines whether or not an execution command to execute diagnosis has been received (step S203).

[0108] As a result of the determination, if an execution command to execute diagnosis has not been received (step S203), the process transitions to step S101 in FIG. 5, and the printing job is resumed (continue resuming). On the other hand, if an execution command to execute diagnosis has been received (step S203, YES), the inspection apparatus 200 executes a diagnosis process (step S204). Details of the diagnosis process will be described later.

[0109] Returning to the determination in step S201, if an execution command to stop printing has been received (step S201, YES), the printing job is stopped and this control ends.

[0110] Next, an operation example when executing control related to the diagnosis process in the inspection apparatus 200 will be described. FIG. 7 is a flowchart showing an example of an operation example when executing control related to the diagnosis process in the inspection apparatus 200. The process in FIG. 7 is appropriately executed, for example, when the inspection apparatus 200 executes the process of step S204 in FIG. 6.

[0111] As shown in FIG. 7, the inspection apparatus 200 outputs a command to output a confirmation chart to the image forming apparatus 1 (step S301). After acquiring the reading information related to the printed matter of the confirmation chart, the inspection apparatus 200 determines whether or not it can be automatically repaired (step S302).

[0112] If, as a result of the determination, it is not automatically repairable (step S302, NO), the inspection device 200 outputs the instruction information to, for example, the display unit (step S303), and determines whether a repair completion command has been received (step S304).

[0113] If, as a result of the determination, a repair completion command has not been received (step S304, NO), the process of step S304 is repeated. On the other hand, if a repair completion command has been received (step S304, YES), the process transitions to step S306.

[0114] Returning to the determination in step S302, if it is automatically repairable (step S302, YES), the inspection device 200 executes a repair process (step S305).

[0115] Next, the inspection device 200 outputs a command to output a confirmation chart to the image forming apparatus 1 (step S306). When the reading information related to the printed matter of the confirmation chart is acquired, the inspection device 200 determines whether the defect has been repaired (step S307). Note that whether the defect has been repaired is determined, for example, by receiving an operation command regarding the presence or absence of repair from the user.

[0116] If, as a result of the determination, the defect has been repaired (step S307, YES), the process transitions to step S111 in FIG. 5, and the print job is restarted (reprint restart). On the other hand, if the defect has not been repaired (step S307, NO), the inspection device 200 determines whether a print stop command has been received (step S308).

[0117] If, as a result of the determination, a print stop command has not been received (step S308, NO), the process returns to step S301. On the other hand, if a print stop command has been received (step S308, YES), the print job is stopped and this control ends.

[0118] According to the embodiment configured as described above, since the switching unit 230 switches the print control of the image forming unit 40 according to the type of defect of the printed matter, appropriate measures can be taken according to the type of defect of the printed matter.

[0119] As a result, regardless of the type of defect of the printed matter, it is possible to suppress continuously taking the same useless measures (for example, reprinting) as in a configuration that takes the same measure, so that the cost in printing can be significantly reduced.

[0120] In addition, since the switching unit 230 switches the print control based on a preset registered pattern, it is possible to generate a printed matter subjected to an inspection according to the purpose of the print job (for example, emphasizing image quality, emphasizing productivity, etc.).

[0121] In addition, when the inspection unit 220 detects a defect in the printed matter, the inspection unit 220 performs a notification process for the defect, so that the user can recognize the content of the defect.

[0122] In addition, since the diagnosis unit 240 diagnoses the defect of the printed matter after the print job is interrupted, the cause of the defect of the printed matter can be analyzed. As a result, the defect of the printed matter can be repaired by the repair process in the repair unit 250 or the repair instruction to the user.

[0123] In the above embodiment, the diagnosis unit 240 diagnoses the defect of the printed matter based on a user's command, but the present invention is not limited to this. For example, the diagnosis unit 240 may automatically diagnose the defect of the printed matter according to the type of the detected defect of the printed matter.

[0124] Specifically, the diagnosis unit 240 automatically diagnoses the defects of the printed matter according to the number of times of detecting the defects of the printed matter. For example, as shown in FIG. 8, for example, on the setting screen of the display unit (not shown) in the inspection apparatus 200, the number of times of detecting the defects of the printed matter can be set for each type of defect of the printed matter. Then, when the diagnosis unit 240 detects a specific defect for the set number of times, it diagnoses the defect. Note that the setting screen may be that of the operation display unit 20 of the image forming apparatus 1, or may be that of an external device connected via a network.

[0125] In the example shown in FIG. 8, the number of streaks and the number of fireflies are set to 20, and the number of times of dirt and chipping are not set. Therefore, even if dirt and chipping occur, the diagnosis unit 240 does not perform defect diagnosis, and when streaks and fireflies occur 20 times, it performs defect diagnosis.

[0126] Next, an operation example when performing defect count control in the inspection apparatus 200 will be described. FIG. 9 is a flowchart showing an example of an operation example when performing defect count control in the inspection apparatus 200. The processing in FIG. 9 is appropriately executed, for example, between step S104 and step S105 in FIG. 5. Note that the control in FIG. 9 relates to a specific defect of the printed matter (for example, fireflies, etc.).

[0127] As shown in FIG. 9, the inspection apparatus 200 counts up the number of times of detecting the defects of the printed matter (step S401). Then, the inspection apparatus 200 determines whether or not the number of times of detecting the defects of the printed matter has reached the set number of times (step S402).

[0128] As a result of the determination, if the number of times of detecting the defect has not reached the set number of times (step S402, NO), this control ends. On the other hand, if the number of times of detecting the defect has reached the set number of times (step S402, YES), the inspection apparatus 200 resets the number of times of detecting the defect (step S403) and executes a diagnosis process (step S404). Then, this control ends.

[0129] According to such a configuration, since switching of print control is suppressed due to defects in printed matter that occur suddenly, it is possible to suppress excessive switching of print control.

[0130] Also, in the above embodiment, the degree of repair after diagnosis by the diagnosis unit 240 can be confirmed by the user, but the present invention is not limited to this, and the inspection device 200 may be able to automatically confirm the degree of repair. For example, it is preferable to make it possible to set either automatic confirmation by the inspection device 200 or confirmation by the user for the degree of repair.

[0131] Next, an operation example when executing control related to the diagnosis process with automatic confirmation of the diagnosis unit 240 in the inspection device 200 will be described. FIG. 10 is a flowchart showing an example of an operation example when executing control related to the diagnosis process in the inspection device 200. The process in FIG. 10 is appropriately executed, for example, when the inspection device 200 executes the process of step S204 in FIG. 6.

[0132] As shown in FIG. 10, the inspection device 200 outputs a command to output a confirmation chart to the image forming apparatus 1 (step S501). When acquiring the reading information related to the printed matter of the confirmation chart, the inspection device 200 determines whether it can be automatically repaired (step S502).

[0133] As a result of the determination, if it cannot be automatically repaired (step S502, NO), the inspection device 200 outputs instruction information to, for example, the display unit (step S503), and determines whether a repair completion command has been received (step S504).

[0134] As a result of the determination, if a repair completion command has not been received (step S504, NO), the process of step S504 is repeated. On the other hand, if a repair completion command has been received (step S504, YES), the process proceeds to step S506.

[0135] Return to the determination in step S502. If it can be automatically repaired (step S502, YES), the inspection device 200 executes a repair process (step S505).

[0136] Next, the inspection device 200 outputs a command to output a confirmation chart to the image forming apparatus 1 (step S506). When acquiring the reading information related to the printed matter of the confirmation chart, the inspection device 200 determines whether there is an automatic confirmation setting (step S507).

[0137] As a result of the determination, if there is no automatic confirmation setting (step S507, NO), the inspection device 200 determines whether the defect has been repaired (step S508). Note that whether the defect has been repaired is determined, for example, by receiving an operation command regarding the presence or absence of repair from the user.

[0138] As a result of the determination, if the defect has been repaired (step S508, YES), the process transitions to step S111 in FIG. 5, and the print job is restarted (reprint restart). On the other hand, if the defect has not been repaired (step S508, NO), the process transitions to step S510.

[0139] Return to the determination in step S507. If there is an automatic confirmation setting (step S507, YES), the inspection device 200 determines whether the defect has been repaired by automatic confirmation (step S509).

[0140] As a result of the determination, if the defect has been repaired by automatic confirmation (step S509, YES), the process transitions to step S111 in FIG. 5, and the print job is restarted (reprint restart). On the other hand, if the defect has not been repaired by automatic confirmation (step S509, NO), the inspection device 200 determines whether a print stop command has been received (step S510).

[0141] If, as a result of the determination, a print cancellation command has not been received (step S510, NO), the process returns to step S501. On the other hand, if a print cancellation command has been received (step S510, YES), the print job is cancelled and this control ends.

[0142] According to such a configuration, since the inspection device automatically confirms the degree of repair, repair processing and the like can be performed without human intervention, which can contribute to improvement in productivity and reduction in man-hours.

[0143] Also, in the above embodiment, the degree of defect (inspection level) of the printed matter has not been mentioned, but the present invention is not limited to this. For example, the inspection level of the defect of the printed matter may be variably set, and the defect of the printed matter may be detected when the inspection level is reached.

[0144] In this way, for example, depending on the type of the printing job such as a job for which it is desired to reduce waste paper or a job for which the number of printed sheets is large and the interruption time and the like are desired to be reduced, or depending on the type of the paper S such as an expensive one, there may be a case where the inspection level in the inspection device 200 may be changed.

[0145] Therefore, by enabling variable setting of the inspection level, flexible inspection can be performed according to the circumstances of the print job.

[0146] Also, in a configuration in which the inspection level of the defect of the printed matter can be variably set, for example, as shown in FIG. 11, the inspection level may be settable for each print job. That is, the inspection unit 220 may set the inspection level for each type of defect of the printed matter according to the type of the print job.

[0147] In the example shown in FIG. 11, it is shown that the inspection levels of the size and density difference of the dirt in the first job, the second job, and the third job can be set. In the first job, the inspection level of the size is set to 5, and the inspection level of the density difference is set to 5. In the second job, the inspection level of the size is set to 3, and the inspection level of the density difference is set to 5. In the third job, the inspection level of the size is set to 5, and the inspection level of the density difference is set to 3. In FIG. 11, illustrations of defects other than dirt are omitted.

[0148] According to such a configuration, more appropriate inspections can be performed according to the type of the print job. Also, since the inspection level is set according to the type of the print job, the labor of setting the inspection level for each print job can be saved.

[0149] Also, in the above embodiment, the diagnosis content of the diagnosis unit 240 is performed using a predetermined confirmation chart, but the present invention is not limited to this. For example, the diagnosis unit 240 may switch the content of the diagnosis, such as changing the type of the confirmation chart according to the type of the defect of the printed matter.

[0150] According to such a configuration, more appropriate diagnosis can be performed according to the content of the defect of the printed matter.

[0151] Also, in the above embodiment, the inspection device is provided as a post-processing device of the image forming apparatus, but the present invention is not limited to this, and it may be provided at a location different from the image forming apparatus, or may be a control unit of the image forming apparatus. In this case, after acquiring the reading information of the printed matter from a reading device such as a scanner, the inspection of the defect of the printed matter is performed.

[0152] Also, in the above embodiment, the inspection device outputs a command to switch the print control to the image forming apparatus, but the present invention is not limited to this, and the image forming apparatus may acquire the inspection result of the inspection unit and the image forming apparatus may have the function of the switching unit.

[0153] In addition, in the above-described embodiment, the diagnostic unit and the repair unit are provided, but the present invention is not limited thereto, and the diagnostic unit and the repair unit may not be provided, or may be provided in a device different from the inspection device (for example, an image forming device or the like).

[0154] Further, in the above-described embodiment, the switching unit switches the printing control of the image forming unit, but the present invention is not limited thereto, and controls other than the printing control of the image forming unit, such as the conveyance control of the image forming unit, may be switched.

[0155] Furthermore, each of the above-described embodiments merely shows an example of implementation of the present invention, and the technical scope of the present invention should not be construed in a limited manner by these. That is, the present invention can be implemented in various forms without departing from the gist or the main features thereof.

Explanation of Reference Numerals

[0156] 1 Image forming apparatus 2 Post-processing apparatus 40 Image forming unit 100 Image forming system 101 Control unit 200 Inspection device 210 Acquisition unit 220 Inspection unit 230 Switching unit 240 Diagnostic unit 250 Repair unit

Claims

1. An inspection device for a printed matter on which an image is output by an image forming unit, an inspection unit that inspects defects of the printed matter based on a reading result of the printed matter; a switching unit that interrupts the inspection of defects of the printed matter based on the result inspected by the inspection unit; comprising after interrupting the inspection of defects of the printed matter, the inspection device performs one of a plurality of controls including control to resume the print job being inspected from an interruption factor page that is the cause of the interruption of the inspection of defects of the printed matter, and control not to resume the print job being inspected. Inspection device.

2. The switching unit switches the print control of the image forming unit based on a preset and registered pattern. The inspection device according to claim 1.

3. The switching unit switches the print control according to the type of the print job. The inspection device according to claim 2.

4. The inspection unit sets an inspection level for each type of defect according to the type of the print job. The inspection device according to claim 3.

5. The inspection unit inspects the defect by comparing a reference image and a printed image of the printed matter. The inspection device according to any one of claims 1 to 4.

6. The inspection unit inspects the defect by comparing management data for managing the printed matter and an inspection area that is a part of the printed image of the printed matter. The inspection device according to any one of claims 1 to 5.

7. The switching unit controls to continue the print job according to the type of the defect. The inspection device according to any one of claims 1 to 6.

8. When the inspection unit detects the defect, it performs a notification process for the defect. The inspection device according to any one of claims 1 to 7.

9. The interruption of the inspection of the defect in the printed matter is an interruption of the printing job. The inspection device according to any one of claims 1 to 8.

10. The plurality of controls includes a control for restarting the printing job related to the inspection from the second page after the first page that has been printed when the inspection of the defect in the printed matter is interrupted. The inspection device according to claim 1 or claim 9.

11. The control not to restart the printing job is a control to cancel the printing job. The inspection device according to claim 1 or claim 10.

12. After the switching unit interrupts the inspection of the defect, it includes a diagnosis unit for diagnosing the defect. The inspection device according to any one of claims 1 to 11.

13. It includes a repair unit for performing a repair process for the defect based on the diagnosis result of the diagnosis unit. The inspection device according to claim 12.

14. After the repair process is performed by the switching unit, it restarts the printing job from the page that caused the interruption of the printing job. The inspection device according to claim 13.

15. The diagnosis unit determines whether to diagnose the defect according to the type of the defect. The inspection device according to any one of claims 12 to 14.

16. The diagnosis unit diagnoses the defect according to the number of times the defect is detected. The inspection device according to any one of claims 12 to 15.

17. The diagnosis unit switches the content of the diagnosis according to the type of the defect. The inspection device according to claim 16.

18. The switching unit reprints the page of the defect cause according to the type of the defect. The inspection device according to any one of claims 1 to 17.

19. The switching unit interrupts the printing job according to the number of times of reprinting. The inspection device according to claim 18.

20. The switching unit switches the control of the image forming unit according to the type of the defect inspected by the inspection unit. The inspection device according to any one of claims 1 to 19.

21. An image forming unit that forms a printed matter by outputting an image to a recording medium, An inspection unit that inspects a defect of the printed matter based on a reading result of the printed matter, and a switching unit that interrupts the inspection of the defect of the printed matter based on a result inspected by the inspection unit. provided with After interrupting the inspection of the defect of the printed matter, the inspection device performs one of a plurality of controls including control to resume the printing job in progress from an interruption cause page that is a cause of interruption of the inspection of the defect of the printed matter, and control not to resume the printing job in progress. An image forming system.

22. An inspection program for a printed matter output with an image by an image forming unit, for a computer, an inspection process for inspecting a defect of the printed matter based on a reading result of the printed matter, a switching process for interrupting the inspection of the defect of the printed matter based on a result inspected by the inspection process, After interrupting the inspection of the printed matter, perform one of a plurality of controls including control to resume the printing job being inspected from the interruption factor page that caused the interruption of the inspection of the printed matter, and control not to resume the printing job being inspected. An inspection program to be executed.

23. An inspection device for a printed matter output with an image by an image forming unit, An inspection unit that inspects defects of the printed matter based on the reading result of the printed matter; A switching unit that switches the control of the image forming unit according to the type of the defect inspected by the inspection unit; Comprising: The switching unit: Switches the printing control of the image forming unit based on a preset registered pattern, Switches the printing control according to the type of the printing job, The inspection unit sets an inspection level for each type of the defect according to the type of the printing job. Inspection device.

24. An inspection device for a printed matter output with an image by an image forming unit, An inspection unit that inspects defects of the printed matter based on the reading result of the printed matter; A switching unit that switches the control of the image forming unit according to the type of the defect inspected by the inspection unit, and interrupts the printing job according to the type of the defect; A diagnosis unit that diagnoses the defect after the switching unit interrupts the printing job; Comprising: The diagnosis unit determines whether to diagnose the defect according to the type of the defect. Inspection device.

25. An inspection device for a printed matter output with an image by an image forming unit, An inspection unit that inspects defects of the printed matter based on the reading result of the printed matter; A switching unit that switches the control of the image forming unit according to the type of the defect inspected by the inspection unit and interrupts the printing job according to the type of the defect; A diagnosis unit that diagnoses the defect after the switching unit interrupts the printing job; comprising; The diagnosis unit diagnoses the defect according to the number of times the defect is detected. Inspection device.

26. An inspection device for a printed matter output with an image by an image forming unit, an inspection unit that inspects a defect of the printed matter based on a reading result of the printed matter; a switching unit that switches the control of the image forming unit according to the type of the defect inspected by the inspection unit; comprising; The switching unit reprints a page of the defect cause according to the type of the defect, and interrupts the printing job according to the number of times of reprinting. Inspection device.

Images