JP2009119882A - Method of discriminating stencil of stencil press, and master roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user to at least identify if a master roll in use is a genuine component, and to make a master roll of a nongenuine component usable by a user's judgment in stead of making all nongenuine master rolls unusable. <P>SOLUTION: A master roll 15 is provided with optical information indicating a maker code and a stencil type code, which are read by a reflective sensor 32, and then, on the basis of this information, conformability of the master roll is discriminated. Discrimination of a nonconformable master roll leads to indication of an error, with a user's attention aroused. Detection of an error from the second time onward can be avoided by the user's judgment. Upon discrimination as a conformable master roll, re-implementation of the procedure following the one for such discrimination is stopped. Then, upon detection of the end mark information provided for the master roll, it is exchanged with a new master roll, with discrimination for the conformability resumed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a raw paper Determination method and master roll of stencil printer, and more particularly, to an original paper Determination method and master roll for use compatible master roll in the printing machine.

  In general, in a stencil printing machine, various base papers are used depending on the grade of the printing press. A master roll wound around a tubular core material is attached to each base paper, and the base paper is drawn out from the attached rolls. It is sent to.

  For example, there are a 400 dpi printing machine and a 600 dpi printing machine as the resolution of a print image, and a base paper corresponding to each model grade should be used. In particular, if a 400 dpi base paper master roll is used in a 600 dpi printing machine, the original clear print image is not guaranteed. Conversely, if a 400 dpi base paper master roll is used in a 400 dpi printing machine, the current 600 dpi base paper is used. Is thinner than that for 400 dpi, so that inconveniences such as wrinkles are likely to occur during feeding of the base paper. In addition, some inexpensive non-genuine master rolls called so-called pirated editions are inferior and contain a large amount of impurities, and it is also possible to have various adverse effects on the printing press in use.

  In order to avoid the above-mentioned inconvenience, it is recommended to use a genuine master roll designated as suitable for each printing press. However, it is good if the user can reliably distinguish between genuine products and non-genuine products or inferior products. However, if used inadvertently, the conventional roll press must correctly determine the master roll. I could not.

  In addition, there is a demand from the user side that it is desirable to use a master roll with equivalent quality even if it is not a genuine product, and it is not flexible enough to accept only genuine products uniformly. There is a case.

  The present invention has been made in view of the above problems. Therefore, the object of the present invention is to make it possible for the user to at least recognize whether the master roll in use is genuine or not, and to disable all master rolls unless it is non-genuine. It is also possible to use a non-genuine master roll at the user's discretion.

The stencil printing machine stencil discrimination method according to the present invention is a stencil stencil applicable to a specific type of printing machine, and optical information indicating the type of stencil is provided at a prescribed position on the leading edge of the stencil and defined on the trailing edge of the stencil A master roll having an end mark attached at a position is provided with a reading means for reading the information, and based on the information read by the reading means, it is determined whether the master roll is suitable for the printing press. Using a stencil printing machine equipped with a base paper discrimination device,
For the master roll, determine whether or not it is a master roll suitable for the printing machine based on at least the optical information,
When it is determined that it is a conforming master roll, the re-execution of the determination procedure after the determination procedure is stopped, the end mark information given to the master roll is detected, and then replaced with a new master roll. While recognizing the suitability of the above resumption, when the master roll non-conformity is detected for the first time, an error display is made as a non-genuine product and plate making is prohibited. Printing is allowed until the end mark is detected while avoiding the display.

  The base paper discrimination method determines whether or not the master roll is a master roll suitable for the printing machine based on optical information indicating at least one of a manufacturer and a base paper type. It is preferable to display an error and prohibit the plate making operation.

  In the base paper discriminating method, it is preferable that the error display and the plate making operation prohibition are canceled by an opening / closing operation of a cover member covering the plate making unit.

  In the base paper discriminating method, it is preferable to use a master roll in which the display length of optical information indicating the master roll manufacturer and the type of base paper is sufficiently shorter than one circumference of the master roll.

  The base paper discriminating method stores the number of times of use of the conforming master roll and the number of times of use of the non-conforming master roll based on the judgment of suitability of the master roll, and reading of the stored data is performed in a serviceman mode. Preferably, this can be done only by The “number of times of use” referred to here may be the number of master rolls used, or the number of times of plate making in each master roll.

  In the master roll according to the present invention, optical information indicating that the master roll is applicable to a specific type of printing press is provided at a specified position on the leading end side of the base paper, and the end information on the base paper is provided at a specified position on the leading end side of the base paper. The display length of the optical information is sufficiently shorter than the circumference of the master roll.

  The master roll is preferably optical information indicating at least one of the manufacturer of the master roll and the type of the base paper, as information indicating that the master roll is applicable to the printing machine of the specific model. .

  The master roll is arranged such that the information given to the specified position on the leading edge side of the base paper and the information given to the specified position on the terminal end side of the base paper are arranged on the same line along the longitudinal direction of the base paper, and The information is preferably readable by reading means.

  The master roll is preferably provided with the above information outside the plate area.

  In the master roll, it is preferable that the display length of the optical information indicating the type of the manufacturer and the base paper is sufficiently shorter than the circumference of the master roll.

According to the present invention, a user can surely recognize whether or not a master roll of a base paper suitable for a printing press to be used is used, and the printing press does not cause a deterioration in printing quality caused by the master roll mismatch. It can maintain itself in good condition. Moreover, it is not intended to accept only a genuine master roll, and if the user determines that the master roll is equivalent to a genuine master roll, it can be used with simple operation without complicated operations. It becomes like this. Further, in the base paper supply apparatus that holds the master roll in the housing, even if the axial center position of the master roll moves as the base paper is consumed, the optical information on the base paper can be read at an appropriate position.

1 is a perspective view showing a schematic configuration of a housing in a base paper supply device of a stencil printing machine according to the present invention. It is a perspective view which shows the state by which the master roll was mounted | worn with the housing | casing of FIG. It is a perspective view which shows the optical information provided to the master roll. It is a bottom view which shows schematic structure of the sensor moving mechanism in the base paper discrimination | determination apparatus of the stencil printer concerning this invention. It is the first half part of the flowchart which shows the process sequence of a master classification check. It is the latter half part of the flowchart of FIG. It is a flowchart which shows the error processing procedure in a master classification check. It is a flowchart which shows the opening / closing check processing procedure of an upper cover. It is a flowchart which shows the process sequence of an end mark reading. It is explanatory drawing which shows the state by which the new master roll is hold | maintained in the housing | casing. It is explanatory drawing which shows the state by which the master roll in a housing | casing has almost used up the base paper.

  1 and 2 show a schematic configuration of a casing that holds a master roll in a base paper supply device of a stencil printing machine according to the present invention. As shown in FIG. 1, the housing 10 includes a front wall 11, a rear wall 12, a bottom wall 13, and a side wall 14 and is formed in a substantially rectangular parallelepiped, uncovered box shape. As shown in FIG. 2, the master roll 15 is inserted into the housing 10 from above, and the base paper 16 is pulled upward from the rear wall 12 side and passes the upper end of the front wall 11 (on the right side of the figure). ). The front wall 11 is fixed, and even if the base paper 16 is pulled forward, the master roll 15 abuts against the front wall 11 and is stopped.

  Although not shown, the base paper 16 drawn out from the master roll 15 is set so as to pass through a plate making unit including a thermal head and a platen roller. The upper part of the plate-making part is covered with an upper cover, and when an error occurs regarding the setting of the base paper, the upper cover is opened and processing operations such as inspection and master roll replacement are performed.

  The rear wall 12, the bottom wall 13, and the side wall 14 are integrally formed, and are urged forward by a coil spring 17 below the bottom wall 13. Therefore, even when the remaining amount of the base paper of the master roll 15 in the casing 10 is reduced and the roll diameter is reduced, the rear wall 12 presses the master roll against the front wall 11 to stabilize the posture of the master roll in the casing. . The rear wall 12, the bottom wall 13, and the side wall 14, which are integrally configured to be movable in the front-rear direction with respect to the fixed front wall 11, have a rear structure. The movement of the rear structure in the front-rear direction is guided by fitting a slider 19 protruding downward from the bottom wall 13 to a guide shaft 18 extending rearward from the lower end of the front wall 11.

  In the master roll 15, code information as shown in FIG. 3 is usually written in a location outside the area where the first plate of the base paper is made from the beginning, usually within the 5th edition. The manufacturer of the master roll as a genuine product and the type of base paper are displayed. In this example, the 3-bit code on the front end side is a manufacturer code, and a 5-bit type code is shown with a space. Information that can be read optically is the simplest and most accurate, but it can also be magnetic information or mechanically read information such as a punched punch pattern. The content of the information can be only one of these two types of code information, or a code indicating other information can be added or the information content can be changed. The display length of this information code is sufficiently shorter than the circumference of the master roll 15, and when the sensor 32 is located in front and reads this information, it is the overlapping part of the rolled translucent base paper. There is no overlap. The reason why the code information is not provided in the first edition is that the user often fails when setting the base paper. It is for reading. Although not shown, an end mark code for indicating that the remaining amount of the base paper is exhausted and needs to be replaced is contained in the last part of the base paper. Since all the code information is read by the reflection sensor 32, they are arranged on the same straight line along the longitudinal side edge of the base paper wound around the core, and are drawn with the same or the same mark paint. Therefore, only one sensor is required for reading these pieces of information.

  A device for optically reading the above-described data code attached to the master roll 15 is provided under the housing 10. FIG. 4 shows a configuration of these apparatuses as viewed from the lower side of the housing 10. The information on the master roll 15 is read at this position, for example, because the information can be obtained earlier than in the case of reading in the middle of the transport path of the base paper pulled out from the roll and fed. This is the selection of the position where the timing can be earliest. Although not shown in FIGS. 1 and 2, a single plate 20 is provided under the bottom wall 13 of the housing 10, and the apparatus shown in FIG. Has been placed.

  At the center of the plate 20, two sliders 19 projecting from the bottom wall 13 of the housing 10 to the bottom of the plate 20 are cut out so as to be slidable along the guide shaft 18, thereby forming an opening 21. At both ends of the plate 20, the locking portions 23 of the coil springs 17 projecting from the bottom wall 13 of the housing 10 to the bottom of the plate 20 are cut out to be openings 22. A rack 26 is attached to the slider 19 and moves in the front-rear direction as the rear structure of the housing 10 moves. A gear 27 that meshes with the rack 26 is rotatably attached to the plate 20. A pin 28 is implanted in the gear 27, and a lever member 30 that has a slot 29 in which the pin 28 engages and is rotatable is attached to the plate 20. A sensor substrate 31 is attached to the tip of the lever member 30, and a reflection sensor 32 is attached to the center of the sensor substrate 31. An opening 33 is formed at a position where the plate 20 faces the sensor. Reference numeral 34 shown in FIG. 1 is a window for the reflection sensor 32 that is opened in the bottom wall 13 of the housing 10.

  The state shown in FIG. 4 is a state when the housing 10 is empty. When a new master roll 15 is inserted, the slider 19 slides on the guide shaft 18 and moves downward in the figure. . During this movement, the rack 26 attached to the slider 19 rotates the gear 27 in the clockwise direction in the drawing, and the lever member 30 moves to the position indicated by the alternate long and short dash line in the drawing by the engagement between the pin 28 and the long hole 29. To do. At this position, the sensor 32 is located almost directly below the center of the master roll 15, and can read the manufacturer code and the type code at a position almost directly in front. Further, as the base paper is consumed, the diameter of the master roll 15 is reduced, and the casing 10 moves forward by the elastic force of the coil spring 17. The rack 26 attached to the slider 19 also moves forward (upward in the figure) along with the movement of the housing, and moves the sensor 32 forward with the rotation of the gear 27 and the lever member 30. When the diameter of the core of the master roll 15 is finally reached, the sensor 32 can read the end mark code at a position directly in front of the center position. Further, even if the master roll 15 just inserted into the housing 10 is reduced in diameter as the base paper is consumed as shown in FIGS. 10 and 11, the bottom surface is the bottom wall due to the weight of the master roll itself. 13, the code information to be read by the sensor 32 is always at a substantially constant distance from the sensor at a position facing the sensor 32. Therefore, since the optical positional relationship is always kept constant despite the simple structure, sufficient reading accuracy can be stably obtained.

  The reading of the manufacturer code and the type code is to confirm that an appropriate master roll suitable for the printer model is used. If a non-conforming master roll is used, there is a risk of unexpected failure or inconvenience. Check that the proper master roll is used to prevent this from happening. If not, it is intended to alert the user by displaying an error or the like. These pieces of information obtained by the sensor 32 are processed by a CPU (not shown), and the feeding operation and the plate making operation of the base paper are controlled. Hereinafter, a processing procedure for performing a master role type check will be described with reference to the flowcharts of FIGS. 5 and 6.

  In the first step # 10 of the processing procedure, it is confirmed that the plate making has been started, that is, that an instruction to make the plate has been issued. If it has been started, the process proceeds to step # 11 to determine whether or not to implement a reading mode in which the sensor 32 reads the following manufacturer code and type code. This determination is made by checking whether the reading mode stop flag is set. The reading mode stop flag is detected until the master roll is replaced, that is, the end mark of the master roll is detected once it is determined that the master roll is a conforming master roll. The reading mode is stopped until a new master roll is installed. This is because the master roll, which is determined to be a conforming master, opens and closes the top cover for maintenance work when an error such as wrinkling occurs during feeding of the base paper, in addition to the problem of nonconformity of the base paper. Even if (as will be described later with reference to FIG. 8, when the upper cover is opened and closed, the master matching flag is reset in step # 162), each time the subsequent reading mode is repeated for the same master roll. This is because there is not. Then, the reading mode stop flag is set following the setting of the master conformance flag described later. Thus, if the reading mode stop flag is set in step # 11, the processing procedure of the master type check ends without executing the reading mode after step # 12. If the reading mode stop flag is not set in step # 11, the process proceeds to step # 12. In step # 12, it is checked whether or not the master roll conformity flag has already been set in the plate making procedure before the first plate. That is, it is determined whether or not it is already determined in step # 17 and step # 18 that the master roll is suitable for the printing press. If the master suitability flag has already been set, it is not necessary to perform another type check, so the procedure is terminated as it is.

  The determination of the conformity is made after the maker code and type code of the master roll is read by the reflection sensor 32, and since the maker code and type code are usually assigned to several versions up to the fifth version, For several plates, the answer is always NO at step # 12. Therefore, the first few versions will be printed regardless of whether or not they are compatible. The version number A is counted until the master compatibility flag is set, and the version number counter is updated by 1 in step # 13.

  When the version number counter is updated, it is asked in step # 14 whether or not the sensor 32 has detected the manufacturer code. If it has not been detected yet, the process proceeds to step # 110. In step # 110, it is determined whether or not the current version number A is greater than a predetermined number N. For example, if it is not a genuine master roll and these information codes are not attached, it is detected that the version A is larger than the set number N and it is not a genuine product, and an error is displayed and replaced. can do.

  If the version number A has not reached the predetermined number N, the process proceeds to step # 111. In step # 111, it is determined whether or not the plate making is finished. If finished, the type check process is finished. If the plate making is not completed yet, the process returns to step # 14, and steps # 14, # 110 and # 111 are repeated until the plate making is completed or until the manufacturer code is detected in step # 14.

  If the manufacturer code is detected in step # 14, the process proceeds to step # 15. In step # 15, it is determined whether a space between the manufacturer code and the type code has been detected. Whether or not a space is detected is determined by detecting the end of the space within a predetermined check time Ta from the end of the manufacturer code. Until the check time Ta elapses and the end of the space is not detected, the determination in step # 15 is no and the process proceeds to step # 120. In step # 120, it is determined whether or not the set check time Ta has elapsed. When the check time Ta elapses without detecting the end of the space, it is possible to detect that the master roll is not a genuine product, display an error, and replace it. During the check time Ta, steps # 15 and # 120 are alternately repeated until the end of the space is detected. If the end of the space is detected within the check time Ta and it is determined in step # 15 that space is detected, the process proceeds to step # 16.

  In step # 16, it is determined whether or not a type code is detected. Whether or not the type code is detected is determined by detecting that the type code is completed within a predetermined check time Tb from the end of the space. Until the check time Tb elapses and the end of the type code is not detected, the determination in step # 16 is no and the process proceeds to step # 130. In step # 130, it is determined whether or not the set check time Tb has elapsed. When the check time Tb elapses with the end of the type code being undetected, it is possible to detect that the master roll is not a genuine product, display an error, and replace it. During the check time Tb, steps # 16 and # 130 are alternately repeated until the end of the type code is detected. If the end of the type code is detected within the check time Tb and it is determined in step # 16 that the type code is detected, the process proceeds to step # 17.

  In step # 17, it is determined whether or not the master roll is compatible with the printer model based on the detected type code. If not, an error is displayed to prompt the master roll to be replaced. If it matches, the process proceeds to step # 18 to set the master roll compatibility flag, and then the process proceeds to step # 19 to set the above-mentioned reading mode stop flag, and further proceeds to step # 20. In step # 20, the counter that counts the number of errors B is reset, and the type check processing procedure ends in this step. The number of errors B is counted when an error is determined in steps # 17, # 110, # 120, and # 130 described above.

  Next, an error processing procedure will be described with reference to FIG. This error process is performed when an error is determined in each of steps # 17, # 110, # 120, and # 130 in the process of checking the master roll type. When error processing is entered, first, the error count B is updated by 1 in step # 140, and the process proceeds to step # 141.

  In this error processing, the processing procedure is distinguished depending on whether the error is the first error after a new master roll is set or the second or later error. In step # 141, it is determined whether or not the error count B is 1. If B = 1, the process proceeds to step # 142 to display an error. This display is made on a display panel such as an operation panel. In step # 143, a flag for stopping the plate making operation is set. The user opens and inspects the upper cover of the plate making unit described above, performs an appropriate adjustment processing operation, and when trouble is removed, closes the upper cover again and continues the plate making operation. In step # 144, it is detected that the upper cover has been opened to cope with the user's work. In step # 145, it is detected that the upper cover has been closed again, and the process proceeds to the next step # 146. These detections can be performed with a microswitch. When the upper cover is closed, the error display is cleared in step # 146, and further, the plate making operation impossible flag is reset in step # 147, thereby allowing the plate making operation to be continued and the error processing is ended.

  For example, if the master roll is not genuine and does not have the specified manufacturer code, space, and type code, but the quality is equivalent to that of the genuine product, the user must replace it with a genuine master roll. Instead, the master roll can be used continuously by ignoring the error display and opening and closing the upper cover. In this manner, in order to take advantage of the flexibility of using the master roll, the error processing can be ended by steps # 150 and # 151. If the number of errors B is 2 or more at step # 141, the process proceeds from step # 141 to step # 150 to forcibly set the master suitability flag, and the error number counter is also reset at step # 151. As described above, when it is determined that the user roll is a master roll that can be used when the first error message is displayed, the upper error cover is opened and closed without performing the adjustment process. Error processing is performed by performing the processing of 150 and # 151, and no error is displayed.

  By the way, the opening / closing operation of the upper cover monitored in the above-described steps # 144 and # 145 is also performed when the master roll is replaced. For example, when the remaining amount of base paper on the master roll decreases and the sensor 32 detects an end mark code, the user replaces the master roll with a new one and opens and closes the upper cover regardless of error processing (step # 160, # 161). At this time, the master compatibility flag and the version number counter are reset to initialize (steps # 162 and # 163). This process is the upper cover opening / closing check shown in the flowchart of FIG. 8. In the error processing of FIG. 7, when the upper cover is opened and closed, it is executed concurrently, and the master compatibility flag and the version number counter are reset. .

  Further, the end mark reading process shown in the flowchart of FIG. 9 is started simultaneously with determining whether or not the plate making has been started in the first step # 10 of the master type check process. That is, it is determined whether or not plate making is started in step # 100, and it is always monitored whether or not an end mark is detected when plate making is started (step # 101). When the end mark is detected in step # 101, the process proceeds to step # 102, the reading mode stop flag is reset, and this process is terminated to prepare for a master type check process for a newly exchanged master roll.

  When performing the control as described above, for example, the number of times the master conformance flag is set can be the number of conforming master rolls used, and conversely, the number of errors can be the number of incompatible master rolls used. Alternatively, the total number of plates from the setting of the master roll until the detection of the conformity flag is detected is the number of plate making by the conforming master roll, and the number of plates from the setting of the master roll to the detection of an error is the non-conforming master. It can be the number of plate makings by roll. If these usage count data are stored in a non-volatile memory and can be checked in the serviceman mode, it can contribute to an appropriate determination of the cause of the failure for troubles such as a printer failure, Appropriate repair procedures and appropriate usage advice for users can be provided. To switch between the serviceman mode and the normal user mode, for example, by turning off the power supply of the device once and then turning on the power supply of the device while pressing a predetermined button on the operation panel, You can switch to mode. If the apparatus is turned off and then turned on again without pressing a button on the operation panel, the control program is switched from the serviceman mode to the normal user mode.

DESCRIPTION OF SYMBOLS 10 Case 11 Front wall 12 Rear wall 13 Bottom wall 14 Side wall 15 Master roll 16 Base paper 17 Coil spring 18 Guide shaft 19 Slider 20 Plate 21 Opening 22 Opening 23 Locking part 26 Rack 27 Gear 28 Pin 29 Long hole 30 Lever member 31 Sensor board 32 Reflection sensor 33 Opening 34 Window

Claims (8)

A master roll (15) which is a plate-making base paper applicable to a printing machine of a specific model, and which is provided with optical information indicating the type of base paper at a specified position on the leading end side of the base paper and an end mark at a specified position on the end side of the base paper ) Stencil provided with a base paper discriminating device which comprises a reading means (32) for reading the information and discriminates whether or not the master roll is suitable for the printing machine based on the information read by the reading means Using a printing machine
Whether the master roll (15) is a master roll suitable for the printing machine based on at least the optical information,
When it is determined that it is a conforming master roll, the re-execution of the determination procedure after the determination procedure is stopped, the end mark information given to the master roll is detected, and then replaced with a new master roll. While recognizing the suitability of the above resumption, when the master roll non-conformity is detected for the first time, an error display is made as a non-genuine product and plate making is prohibited. A base paper discrimination method for a stencil printing machine, characterized by avoiding display and allowing plate making until the end mark is detected. The error indication and plate making operation prohibition, sheet discriminating method according to claim 1 wherein the released by opening and closing operation of the cover member for covering the plate making unit. The display lengths of the optical information in the master roll, sheet discriminating method according to claim 1, wherein the use of sufficiently short master roll than one rotation length of the master roll. Is stored and the number of uses and the number of uses incompatible master roll of whether adaptation master roll based on the determination of the adaptation of the master roll, the reading of stored data, according to claim performed only by operation of the service engineer mode 1 The base paper discrimination method described.   Optical information indicating that it is a roll of printing plate paper that can be applied to a printing machine of a specific model is given to a specified position on the leading end side of the base paper, and end information on the base paper is given to a specified position on the trailing end side of the base paper. A master roll characterized in that a display length of information is sufficiently shorter than one circumference of the master roll. Information indicating that the role of the applicable prepress sheet printing press of the specific models, according to claim 5, wherein the optical information indicating at least either the manufacturer or the base paper of the master roll (15) Type Master roll. The information given to the prescribed position on the leading end side of the base paper and the information given to the prescribed position on the terminal end side of the base paper are arranged on the same line along the longitudinal direction of the base paper, and one reading means (32) The master roll according to claim 5 , wherein the master roll is readable information. The master roll according to claim 5 , wherein all of the information is provided outside the plate area.

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