JP2005059341A - Method of setting up print system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of setting up a print system capable of enhancing an efficiency of setting up the print system including a plurality of printers and a development processor shared by the printers. <P>SOLUTION: This print system 200 includes the printers 10a-10c and the development processor 204 commonly used therein. By setting up the printer 10a, set-up data in relation to a coloring condition of a printing paper S is obtained. The printers 10b, 10c are set up by using the set-up data. The same kinds of printing papers S are used in the printers 10a-10c. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a printing system setup method, and more particularly to a printing system setup method including a plurality of printing apparatuses and a development processing apparatus shared by the printing apparatuses.

  In general, at a developing station, a so-called daily setup is performed before the start of daily work in order to produce a print in an appropriate color state for a printing apparatus that performs image exposure (printing) on photographic paper.

  In daily setup, reference setup data (default data) is created based on the average value of the characteristics of the photographic paper and processing equipment used, and a predetermined setup image is printed under the exposure conditions based on the reference setup data. Make test prints by exposing to paper. The color density of the produced test print is measured with a colorimeter. If the color development state is not appropriate, the setup data is adjusted and a test print is produced again. This operation is repeated until the color state of the test print becomes appropriate, and setup data is obtained.

  2. Description of the Related Art A large-scale development facility that produces a large number of prints uses a printing system that includes a plurality of printing apparatuses and a development processing apparatus shared by the plurality of printing apparatuses. In this printing system, the photographic paper exposed by the printing apparatus is once taken up by a take-up magazine, and the take-up magazine is transported to one developing processing apparatus to develop the exposed photographic paper, and then developed. Printing paper is cut and sorted in units of frames to produce a print. Even in such a printing system, the daily setup of each printing apparatus is performed before the start of work every day.

  However, in the daily setup in this printing system, it is necessary for the operator to remove the take-up magazine from the printing apparatus and transport it to the development processing apparatus every time a test print is produced, and the operator's own moving distance becomes longer. Since such a process must be performed for each of the plurality of printing apparatuses, the operator needs a lot of labor and time to complete the setup of all the printing apparatuses, and the setup efficiency is not good.

  As a conventional technique for improving the efficiency of setup, for example, Patent Document 1 discloses that setup is completed in either one of an analog exposure unit and a digital exposure unit in a printing apparatus, and the set-up data is transferred to the other exposure unit. A setup method used for the setup of the above is disclosed.

JP 2000-267207 A

  However, the method disclosed in Patent Document 1 improves the setup efficiency of one printing apparatus, and is effective for setting up a printing system including a plurality of printing apparatuses and one development processing apparatus. It is not a thing.

  That is, the method disclosed in Patent Document 1 is a setup method in one printing apparatus. In other words, since setup data in a certain printing apparatus is not used for setting up another printing apparatus, Even if the method is applied to the setup of a plurality of printing apparatuses, the same setup work must be performed for each printing apparatus. Therefore, the time and labor required for the setup of each printing device is almost the same, and the setup time becomes longer in proportion to the number of printing devices, improving the efficiency when setting up multiple printing devices that constitute the printing system. It is not possible.

  SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide a printing system setup method capable of improving the efficiency in setting up a printing system including a plurality of printing apparatuses and a development processing apparatus shared by the plurality of printing apparatuses. It is.

  In order to achieve the above object, a printing system setup method according to claim 1 is a printing system setup method including a plurality of printing apparatuses and a development processing apparatus shared by the plurality of printing apparatuses. A set-up of a printing device included in the apparatus to obtain set-up data relating to the color development state of the photosensitive material, and a step of setting up another printing apparatus included in the printing system using the set-up data.

  According to a second aspect of the present invention, there is provided a printing system setup method according to the first aspect, wherein one printing apparatus and another printing apparatus use the same type of photosensitive material. .

  In the print system setup method according to claim 1, unlike the prior art, when setting up the second and subsequent printing apparatuses, the setup relating to the color development state of the photosensitive material obtained for the first printing apparatus for which the setup has been completed. Start setup with the completed data. Here, the developing solution is a major factor that affects the setup, but the printing device to be set up and the printing device that has been set up share the developing processing device, so the second and subsequent printing devices to be set up The reference set-up data (first set-up data) is data corresponding to at least the development processing apparatus (development processing solution). Accordingly, setup of the second and subsequent printing apparatuses can be started from a state closer to the target, and setup can be completed efficiently in a short time. As a result, in a printing system including a plurality of printing apparatuses and a development processing apparatus shared by them, when setting up a plurality of printing apparatuses continuously, the setup efficiency of the second and subsequent printing apparatuses can be improved. As the number increases, the setup efficiency can be improved.

  The photosensitive material to be used is also a major factor that affects the setup. In the printing system setup method according to claim 2, the same type of photosensitive material is used for the printing apparatus to be set up and the printing apparatus that has been set up. Since it is used, the reference setup data for the second and subsequent printing apparatuses to be set up is data that is also compatible with the photosensitive material. Therefore, the setup of the second and subsequent printing apparatuses can be started from a state closer to the target, and the setup can be completed in a shorter time. As a result, in a printing system including a plurality of printing apparatuses and a development processing apparatus shared by them, the setup efficiency of the plurality of printing apparatuses can be further improved.

  According to the present invention, in a printing system including a plurality of printing apparatuses and a development processing apparatus shared by them, the setup efficiency of the second and subsequent printing apparatuses can be improved, and consequently the setup efficiency of the printing system can be improved.

Embodiments of the present invention will be described below with reference to the drawings.
A printing apparatus 10 to which the present invention is applied will be described with reference to FIGS.

  The printing apparatus 10 is an apparatus that is preferably used in a large-scale developing station or the like that produces a large amount of prints. For example, image exposure on the photographic paper S, subsequent development processing, cutting and sorting in units of frames, and the like. Is suitably used for a separation type printing system which is performed by separate apparatuses.

  The printing apparatus 10 includes a supply magazine 12 that winds and stores photographic paper S, which is a photosensitive material, in a roll shape, an exposure processing unit 14 that performs image exposure on the photographic paper S, and a roll of the photographic paper S that has been subjected to exposure processing. The take-up magazine 16 to be stored and stored, the control unit 18 for controlling the operation of the printing apparatus 10, the input unit 20 such as a keyboard and a mouse for the operator to input data and instructions, and the printing apparatus 10 are made easier to operate. A display unit 22 for displaying a GUI (Graphical User Interface), a message to an operator, an image to be formed on the photographic paper S, and the like is included.

  As shown in FIG. 3, the exposure processing unit 14 includes a supply unit 24 for pulling out the roll-shaped photographic paper S stored in the supply magazine 12. A paper end sensor 26 for detecting the end of the photographic paper S and a joint of the photographic paper S are detected on the transport path of the long photographic paper S drawn by the supply unit 24 and on the downstream side of the supply unit 24. A splicing sensor 28, a paper cutter 30 used when ordering or forcibly cutting the photographic paper S, a guide roller 32 for changing the direction of the photographic paper S, and a loop forming portion 34 are disposed. Here, the order cut refers to a process of separating the photographic paper S from the roll in a predetermined order unit, and the forced cut refers to a process of forcibly separating the photographic paper S when dealing with a trouble such as a paper jam.

  The rollers in the supply unit 24 are driven by a motor 36, and the paper cutter 30 and the guide roller 32 are driven by motors 38 and 40, respectively.

  The tension or the like applied to the photographic paper S is absorbed by the loop forming unit 34. In addition, sensors 42 to 48 are provided in order to detect the degree of loop of the photographic paper S by the loop forming unit 34.

  The same applies to loop forming units 60 and 80 described later.

  Paper sensors 50 and 52 for detecting the position of the photographic paper S are arranged on both sides of the loop forming unit 34, and are used to determine the presence or absence of a paper jam, the position of the photographic paper S, and the like. The same applies to paper sensors 58, 78 and 84 described later.

  A guide roller 54 for changing the direction of the photographic paper S, a punch 56 for forming a punch hole as a mark in the photographic paper S, a paper sensor 58, a loop forming unit 60, and exposure are further provided on the conveyance path of the photographic paper S. A mark sensor 62 for detecting a mark for processing or the like is arranged.

  The mark sensor 62 detects, for example, a cut mark H1 and an order mark H2 formed on the photographic paper S as shown in FIG. The cut mark H1 is formed for each image (frame), and the order mark H2 is formed for each order. Sensors 64 and 66 for detecting a loop of the photographic paper S are arranged in the vicinity of the loop forming unit 60.

  The guide roller 54 is driven by a motor 68, and one roller pair 60a and the other roller pair 60b of the loop forming unit 60 are driven by motors 70 and 72, respectively.

  On the downstream side of the mark sensor 62, conveyance roller pairs 74 and 76 are arranged, and a paper sensor 78, a loop forming unit 80, a conveyance roller pair 82, and a paper sensor 84 are further arranged. The long photographic printing paper S is exposed by the exposure unit 86 at the exposure portion P between the conveyance roller pairs 74 and 76, and a plurality of images are continuously formed as latent images. The exposure unit 86 is configured, for example, as a laser exposure type that scans a laser beam in a direction (main scanning direction) orthogonal to the conveyance direction of the photographic paper S to expose and form an image on the photographic paper S.

  Sensors 88 and 90 for detecting a loop of the photographic paper S are arranged in the vicinity of the loop forming unit 80.

  The conveyance roller pairs 74 and 76 are driven by a motor 92, and the pressure bonding / crimp release operation of the pressure roller 74a constituting the conveyance roller pair 74 is performed by the motor 94, and the pressure bonding / pressure bonding of the pressure roller 76a constituting the conveyance roller pair 76 is performed. The releasing operation is performed by the motor 96, and the conveying roller pair 82 is driven by the motor 98.

  The photographic paper S processed by the exposure processing unit 14 is wound up in the winding magazine 16 without being developed and stored in a roll shape. As the subsequent processing, for example, the photographic paper S is manually loaded into another development processing apparatus 204 (see FIG. 4) and developed, and further cut and sorted in units of one frame to produce a finished print. Is done.

  Returning to FIG. 1, the supply magazine 12, the exposure processing unit 14, the take-up magazine 16, the input unit 20 and the display unit 22 are controlled by the control unit 18.

  The control unit 18 includes a CPU 102, a ROM 104, a RAM 106, a hard disk drive (HDD: including a hard disk) 108, a CD-ROM drive 110, and a flexible disk (FD) drive 112 connected to each other via a bus 100.

  The CPU 102 executes various programs stored in the ROM 104, the HDD 108, and the like, gives instructions to each component in the printing apparatus 10, the scanner 114, and the colorimeter 116, and controls their operations.

  The ROM 104 stores a startup program and the like. The activation program is executed by the CPU 102 when the printing apparatus 10 is turned on. As a result, a program such as an operating system (OS) recorded in the HDD 108 is loaded into the RAM 106, and various processes and controls can be executed.

  A program for controlling the printing apparatus 10 is expanded in the RAM 106. The processing result of this program, temporary data for processing, and display data for displaying information on the screen of the display unit 22 (text data, image data) Etc.) and is used as a work area for the CPU 102. The display data developed on the RAM 106 is transmitted to the display unit 22, and the display unit 22 displays the display content (text, image, etc.) corresponding to the display data on the screen.

  The HDD 108 is a device for recording and reading programs, control data, text data, image data, and the like on the hard disk in accordance with instructions from the CPU 102. In this embodiment, a program for operating the printing apparatus 10 is stored in the hard disk in the HDD 108, and the setup image data of the setup image 302 to be formed on the photographic paper S and data corresponding to the collation information 312 are stored. , And setup data relating to the color development state of the photographic paper S are stored.

  The setup data relating to the color development state of the photographic paper S is data for adjusting the exposure unit 86 so that an image with a desired density can be formed on the photographic paper S (print). Specifically, it is data for correcting light emission intensity, exposure time, and the like by the exposure unit 86.

  The CD-ROM drive 110 reads programs and data recorded on the CD-ROM 118 in accordance with instructions from the CPU 102.

  The FD drive 112 records a program or data recorded in the HDD 108 or the like or data held in the RAM 106 on the flexible disk (FD) 120 according to an instruction from the CPU 102, and a program or data recorded on the FD 120. Read data.

  In addition, a scanner 114 and a colorimeter 116 are connected to such a control unit 18. The scanner 114 reads an image to be formed on the photographic paper S as image data, and the image data is stored in the HDD 108. The colorimeter 116 measures the color density of the print.

  FIG. 4 shows a printing system 200 using such a printing apparatus 10.

  The printing system 200 is a separation type printing system that performs image exposure on the photographic paper S and subsequent development processing, cutting and sorting for each frame, etc., using separate devices. Hereinafter, it includes printing apparatuses 10a, 10b, and 10c), a computer 202 connected to the printing apparatuses 10a to 10c via, for example, a LAN (Local Area Network), and a development processing apparatus 204.

  The same type of photographic paper S is used for each of the printing devices 10a to 10c, and a single development processing device 204 is shared for the development processing of the photographic paper S exposed by each of the printing devices 10a to 10c. The computer 202 can transmit image data of an image to be exposed to each of the printing apparatuses 10a to 10c, and can transmit reference setup data to the printing apparatus to be set up.

  Here, the same type of photosensitive material means that at least the color development characteristics are the same.

  In such printing apparatuses 10a to 10c of the printing system 200, the exposure unit 86 exposes an image based on the image data onto the photographic paper S. The exposure unit 86 measures the color density of the image actually printed on the photographic paper S, and A daily setup is performed before the start of every day in order to make the coloring state appropriate.

  Here, FIG. 5 shows an example of a test print 300 used for setup.

  As shown in FIG. 5A, a setup image 302 is exposed on the photographic paper S by the exposure unit 86, and a leading end loss portion 304 is provided at the leading end of the photographic paper S on which the setup image 302 is exposed. A rear end loss portion 306 is provided at the rear end portion.

  The setup image 302 is rectangular, for example, and includes a gray scale image 308 for measuring the color density and a cut line 310 formed by making the tip of the gray scale image 308 a broken line. A cut line 310 indicates a cut position on the leading end side of the photographic paper S, and character information <cut line> is synthesized below the cut position. The gray scale image 308 represents an image corresponding to color data (8-bit gray value: 0 to 255) in a stepwise manner (18 steps in this embodiment) in order to measure the color density.

  Further, collation information 312 for collating the test print 300 at the time of measuring the color density is formed in the rear end loss portion 306. The collation information 312 includes the serial code of the printing apparatus, the type of photographic paper, the exposure date / time, and the like.

  A test print 300 as shown in FIG. 5B is obtained by cutting the leading end side of such a photographic paper S by a cutting line 310 and cutting the trailing end side at a predetermined position.

  Further, setup information 400 as shown in FIG. 6 is displayed on the screen of the display unit 22 before measuring the color density of the test print 300.

  The setup information 400 displays the serial number of the printing apparatus that produced the test print 300, the type of photographic paper S used to produce the immediately preceding test print 300, and the exposure date / time of the immediately preceding setup image. And the information on the test print 300 are checked to confirm the test print 300.

  Next, an example of the setup operation of the printing apparatuses 10a to 10c of the printing system 200 will be described with reference to FIGS.

  First, the printing apparatus 10a is set up.

  Referring to FIG. 7, first, reference setup data (default data) relating to the color development state of photographic paper S created in advance, setup image data corresponding to setup image 302, data corresponding to collation information 312, and the like. It is read from the HDD 108 or transferred from the computer 202 and held in the RAM 106 (step S1). Under the exposure conditions (emission intensity and exposure time) based on the reference setup data, the exposure unit 86 applies the set-up image 302, the collation information 312, the cut line 310, and the characters <cut line> to the long photographic paper S. Information is exposed (step S3).

  The collation information 312 and <cutting line> character information may be printed on the photographic paper S by a printing unit (not shown). Further, data related to the exposure date / time in the collation information 312 is given from a timer (not shown). The same applies to the printing apparatuses 10b and 10c.

  Then, the exposed long photographic paper S is wound around the take-up magazine 16 in an undeveloped state and stored in a roll shape, and the take-up magazine 16 is carried to a development processing device 204 which is a separate device. The loaded photographic paper S is subjected to development processing. Thereafter, the front end portion of the photographic paper S is cut along a cut line 310 and the rear end portion of the photographic paper S is cut at a predetermined position by a cutting device (not shown) to produce the test print 300 (step). S5).

  Thereafter, the setup information 400 is displayed on the screen of the display unit 22, and after the display content is collated with the collation information 312 on the test print 300, the color density of the test print 300 is measured by the colorimeter 116. (Step S7).

  Based on the color density of the test print 300, it is determined whether or not the color development state is appropriate (step S9). If the color development state is not appropriate, the setup data is adjusted so that an image can be formed in the proper color development state. The adjusted setup data is held in the RAM 106 (step S11). Specifically, the light emission intensity and exposure time of the exposure unit 86 are corrected by adjusting the setup data. Then, the process returns to step S3, and the adjustment of the setup data is repeated until the coloring state becomes appropriate.

  If it is determined in step S9 that the color development state of the test print 300 is appropriate, the setup data at that time is recorded as the setup completed data on the hard disk of the HDD 108 and inserted into the FD drive 112 as necessary. Recording on the FD 120 completes the setup of the printing apparatus 10a (step S13).

Next, the printing apparatuses 10b and 10c are set up.
Since the setup operations of the printing apparatuses 10b and 10c are the same, the operation of the printing apparatus 10b will be described here.

  Referring to FIG. 8, first, when FD 120 on which setup data at the time of completion of setup in printing apparatus 10a is recorded is inserted into FD drive 112 of printing apparatus 10b, photographic paper obtained for printing apparatus 10a is obtained. The set-up data relating to the S coloring state is read and held in the RAM 106 of the printing apparatus 10b. The setup completed data may be automatically transferred from the printing apparatuses 10a to 10b via the computer 202 after the setup of the printing apparatus 10a is completed. The set-up data may be transferred to the printing apparatuses 10a to 10b via the computer 202 by operating the computer 202 or by an instruction from the input unit 20 of the printing apparatus 10b. Further, the setup image data of the setup image 302 created in advance and the data corresponding to the collation information 312 are read from the HDD 108 of the printing apparatus 10b or transferred from the computer 202 and held in the RAM 106 of the printing apparatus 10b. (Step S21).

  Next, in the printing apparatus 10b, the setup image 302, the verification information 312 and the like are exposed on the long photographic paper S under the exposure condition based on the setup-completed data (step S23).

  Then, the exposed long photographic paper S is wound around the take-up magazine 16 in an undeveloped state and stored in a roll shape, and the take-up magazine 16 is carried to a development processing device 204 which is a separate device. The loaded photographic paper S is subjected to development processing. Thereafter, the front end portion of the photographic paper S is cut along a cut line 310 and the rear end portion of the photographic paper S is cut at a predetermined position by a cutting device (not shown) to produce the test print 300 (step). S25).

  Thereafter, the setup information 400 is displayed on the screen of the display unit 22, and after the display content is collated with the collation information 312 on the test print 300, the color density of the test print 300 is measured by the colorimeter 116. (Step S27).

  Whether or not the color development state is appropriate is determined based on the color density of the test print 300 (step S29). If the color development state is not appropriate, the setup data is adjusted so that an image can be formed in the proper color development state. The adjusted setup data is held in the RAM 106 (step S31). Specifically, the light emission intensity and exposure time of the exposure unit 86 are corrected by adjusting the setup data. Then, the process returns to step S23, and the adjustment of the setup data is repeated until the coloring state becomes appropriate.

  If it is determined in step S29 that the color development state of the test print 300 is appropriate, the setup data at that time is recorded as setup completed data on the hard disk of the HDD 108 and inserted into the FD drive 112 as necessary. Recording on the FD 120 completes the setup of the printing apparatus 10b (step S33).

  The printing apparatus 10c is set up similarly to the printing apparatus 10b.

  The determination as to whether the coloring state is appropriate may be made by the operator or automatically by the printing apparatus.

  According to such a printing system 200, when the printing apparatuses 10b and 10c are set up, the setup is started using the setup-completed data regarding the coloring state of the photographic paper S obtained for the printing apparatus 10a that has been set up.

  Here, the development processing solution and the photographic paper S used are factors that affect the color development state of the print. The printing apparatuses 10b and 10c and the printing apparatus 10a are composed of a single development processing apparatus 204 and the same type. Since the photographic paper S is used, the reference setup data of the printing apparatuses 10b and 10c to be set up is data corresponding to at least the development processing apparatus 204 and the photographic paper S. Therefore, the setup of the printing apparatuses 10b and 10c can be started from a state closer to the target, and the setup can be completed efficiently in a short time. As a result, in the printing system 200, when setting up a plurality of printing apparatuses 10a to 10c in succession, the setup efficiency of the second and subsequent printing apparatuses can be improved, and the setup efficiency can be improved as the number of printing apparatuses increases. it can.

  Next, Table 1 shows experimental results for a normal setup and a setup using setup data (a setup according to the present invention).

  In this experimental example, the printing system includes two printing apparatuses, the two printing apparatuses share one development processing apparatus, and the two types of printing apparatuses are loaded with the same type of photographic paper. In Table 1, “Rewinding magazine removal / movement / each processing” refers to removal / removal of the winding magazine, movement (reciprocation) from the printing device to the development processing device, development by the development processing device, preparation of a test print, color development. Includes processing such as concentration measurement and setup data adjustment.

  As shown in Table 1, in a normal setup using default data created in advance, test prints were repeated four times until a proper color development state was achieved. On the other hand, in the setup using the setup data obtained with one printing device, the setup can be started from a state close to the appropriate exposure condition corresponding to the type of photographic paper and the state of the developing solution. The test print was made only twice. As a result, the setup time was reduced from 84 minutes to 42 minutes.

  The present invention can also be applied to a printing system in which a digital printing apparatus using so-called digital exposure and an analog printing apparatus using so-called direct exposure (analog exposure) are mixed. For example, when the printing system includes three printing apparatuses, two digital printing apparatuses and one analog printing apparatus may be provided.

  Further, when the test print 300 is produced, the cut line 310 is formed at the front end portion of the setup image, and the characters <cut line> are displayed to clearly show the cut position. The photographic paper S can be easily cut at an accurate position without looking. Therefore, when measuring with the colorimeter 116, it is possible to measure from an accurate position corresponding to the measurement start point of the colorimeter 116 without measuring from an incorrect position of the test print 300. Therefore, the measurement becomes accurate and smooth. Can be set up at the same time and loss paper can be prevented.

  Furthermore, by displaying the collation information on the test print 300 and the display unit 22 when performing “color density measurement and setup data adjustment”, the correspondence between the test print 300 and the printing apparatus can be accurately grasped. . Therefore, it is possible to prevent an abnormal setup process due to an error in the correspondence, and it is not necessary to perform a loss print or a reprint, thereby improving productivity. In particular, when the test print 300 is produced and “color density measurement and setup data adjustment” are not performed separately, or when the printing apparatus and the development processing apparatus are not paired, This is effective when the correspondence between the test print 300 and the printing apparatus is likely to be erroneous.

  In addition, this invention is not only a daily setup performed to absorb daily changes over time, but also an initial setup performed at the time of installing and installing a printing apparatus, and a paper specification registration for absorbing differences in photosensitive materials. The present invention can also be applied to setup, magazine registration setup for absorbing the difference in photosensitive material for each magazine, emulsion number change setup for absorbing the difference when the lot of photosensitive material changes.

  The photosensitive material used in the present invention is not limited to photographic paper, and may be a cloth, a plastic film, or the like.

1 is a block diagram illustrating an example of a printing apparatus to which the present invention is applied. 1 is an external view illustrating an example of a printing apparatus to which the present invention is applied. It is an illustration figure which shows schematic structure of an image process part. 1 is a block diagram illustrating an example of a print system. (A) is an illustrative view showing an example of photographic paper on which a setup image or the like is formed, and (b) is an illustrative view showing an example of a test print. It is an illustration figure which shows an example of the setup information displayed on a display part. FIG. 10 is a flowchart illustrating an example of a setup operation of the printing apparatus. FIG. 10 is a flowchart illustrating an example of a setup operation of second and subsequent printing apparatuses.

Explanation of symbols

10, 10a, 10b, 10c Printing device 14 Exposure processing unit 18 Control unit 20 Input unit 22 Display unit 86 Exposure unit 116 Colorimeter 202 Computer 204 Development processing device
300 test print S photographic paper

Claims (2)

In a printing system setup method including a plurality of printing apparatuses and a development processing apparatus shared by the plurality of printing apparatuses,
Setting up a certain printing device included in the printing system to obtain set-up data relating to the color development state of the photosensitive material, and setting up another printing device included in the printing system using the set-up data. A printing system setup method. The printing system setup method according to claim 1, wherein the certain printing apparatus and the other printing apparatus use the same type of photosensitive material.

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