JP2008132623A - Printing control method and stencil printing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make an appropriate printing control according to the use history or the using state of a printing drum and to prevent malfunctions of plate ejection, platemaking and a printing operation. <P>SOLUTION: A storage member 71 is provided in either a drum device 20 or an ink storing member fitted with the drum device, and a writing device 70 for writing various information in the storage member and reading it is provided. At the time when printing is ended, the information on the final use history of the drum device and the information on the final using state thereof are updated at any time and kept in the storage member. At the time when printing is started, a control part 60 reads the information on the final use history and the information on the final using state kept in the storage member, and determines whether the use history exists within a prescribed period, on the basis of the read information on the final use history, and it controls plate ejection, platemaking and the printing operation on the basis of the result of judgment. Even on the occasion when the printing drum not used for the prescribed period is used, therefore, normal and good printing is performed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a printing control method in a stencil printing apparatus, and a stencil printing apparatus that controls printing, plate making, and printing operations using the printing control method.

In a stencil printing apparatus, ink is supplied from the inside of a drum to a pre-made plate (also referred to as a master) that is wound around the outer peripheral surface of a printing drum of a drum device (also referred to as a drum unit) that constitutes a printing unit. An image corresponding to the plate-making image of the plate is printed by pressing the sheet against the sheet. The printing drum normally has one color per drum to hold the ink replenished from the ink storage member (ink pack, ink tank, etc.) through the ink supply pipe in the ink reservoir inside the drum. The entire apparatus (drum unit) is detachable from the apparatus main body. That is, in the stencil printing apparatus, when printing a desired color, the drum unit that is not used is removed from the apparatus main body, and the drum unit in which the ink storage member having the desired color ink and the printing drum are set is mounted on the apparatus main body. It is configured.
Ink used in stencil printing machines is difficult to dry when left for a short period of time, and quickly penetrates when the oil and water that makes up the ink penetrates the paper after it has been transferred to the paper or vaporizes it into the atmosphere. Dried emulsion inks are mainly used.

  In the stencil printing apparatus having such a configuration, when changing the color of ink, a drum unit having ink of a desired color must be prepared in advance and the drum unit must be replaced with respect to the apparatus main body. In addition, because the printing drum enters the stencil printing machine, once the printing drum is installed and set in the machine, the usage history of the printing drum (whether it is used within a certain period, usage time, etc.) and usage status (use It was not easy to confirm the unique information of the printing drum such as the ink color and ink type, the presence or absence of the plate on the drum). Further, it is difficult to accurately measure which printing drum is not used for printing for which period, that is, the elapsed time (or the leaving period) from the end of the previous printing. In addition, when the printing drum is left for a long time after the printing is finished, the moisture contained in the ink gradually evaporates, and the ink is softened (loosened). When the ink is softened, the ink tends to pass through the opening of the printing drum, the mesh screen, and the perforated part of the master. Too much contact with the surface causes misprinting or unevenness in the image.

In order to reduce such inconveniences, some stencil printing apparatuses are provided with a mode in which only the printing drum is arbitrarily idled so that the ink inside the drum is adapted (for example, Patent Document 1).
More specifically, a mode called “auto idling mode” is provided. This stores the time when the plate making and printing were last performed in the apparatus, and calculates the interval between the time stored at the time of the next plate making and the current time. If the calculated standing time is equal to or greater than the set value of the auto-idling mode, the ink is familiarized by performing the same pressing operation as printing without winding the plate-making master around the drum and feeding the paper.
However, according to this configuration, if one drum unit is used for one apparatus, it is possible to perform a sufficient function and eliminate the occurrence of defective printed matter. If you use a different printing drum, the auto idling mode will work for the drum unit that you use first, but if you replace the drum unit, the auto idling mode will not work for the replaced drum unit, resulting in defective prints. End up.

Japanese Patent Laid-Open No. 3-17581 JP 2002-137525 A JP 2004-9322 A

Conventionally, in a printing drum that has been left for a certain period of time, if the ink remains in the drum, the ink remaining in the drum is softened (loosened), and the ink loosened on the plate wound around the printing drum This causes the oil component to bleed and cause printing defects.
Further, the present applicant has proposed a printing apparatus provided with a plate detecting means for detecting the presence or absence of a plate (master) on a printing drum by an optical sensor or a contact type sensor using a movable electrode ( Patent Documents 2 and 3) If the oil component also oozes in the detection unit of the sensor for detecting the presence or absence of a plate, the sensor cannot detect it correctly, the sensor detects it incorrectly, and the plate is placed on the printing drum. It may cause a malfunction of the plate-making and printing operations, such as performing plate-removing operation even though there is no plate, or performing plate-making and winding operations without performing plate-removing operation, and causes device malfunction and abnormal images, There was a problem that good printing could not be performed.

  The present invention has been made in view of the above circumstances, and more reliably solves the problems caused by the softening (loosening) of ink caused by leaving or using the printing drum, as well as the usage history and usage of the printing drum. The purpose of the present invention is to provide a printing control method capable of preventing printing, plate making and printing operation from malfunctioning by performing appropriate printing control according to the state, and further using the printing control method to discharge the plate and make the plate. An object of the present invention is to provide a stencil printing apparatus capable of preventing a malfunction of a printing operation and performing good printing.

In order to achieve the above object, the present invention adopts the following means.
According to a first aspect of the present invention, plate making is performed by supplying ink from the inside of a drum to a pre-made plate wound around the outer peripheral surface of a printing drum of a drum device, and pressing the paper against the plate. In the printing control method of a stencil printing apparatus for printing an image corresponding to an image, a storage member is provided in either the drum apparatus or an ink storage member attached to the drum apparatus, and various information is written to the storage member. And a writing means capable of reading, and when the printing is completed, the storage device stores and updates the last use history information and the last use status information of the drum device as needed. Read the last use history information and last use status information stored in the member, and determine whether there is a use history within a certain period based on the read last use history information Plate discharge based on the determination result, plate making, and performs control of the printing operation.

According to a second means of the present invention, in the printing control method of the first means, it is determined that there is no use history for a predetermined period or more based on the last use history information read from the storage member, and the last use of the storage member is determined. If it is determined from the status information that the printing drum has been used and the use has been completed, the plate discharging operation is always performed when the plate making and printing operations are performed.
According to a third means of the present invention, in the printing control method of the first means, it is determined that there is no use history for a certain period or more based on the last use history information read from the storage member, and the last storage of the storage member If it is determined from the use state information that the printing drum is not used in the state where the printing drum is used, the plate discharging operation is not performed when the plate making and printing operations are performed.

  According to a fourth means of the present invention, in the printing control method of the first means, when it is determined that there is no usage history for a certain period or more based on the final usage history information read from the storage member, the printing drum is displayed to the user. A message for confirming the state of the storage device is displayed on the operation panel, and the user selects a result of confirming the presence or absence of the plate on the drum from the operation panel. A predetermined plate-making and printing process control is performed according to information selected by the user.

According to a fifth means of the present invention, in the print control method of the fourth means, it is determined that there is no use history for a certain period or more based on the last use history information read from the storage member, and the last use of the storage member is determined. If it is determined from the status information that the printing drum has a plate and the use is finished, and the user's selection from the operation panel selects that there is a plate on the drum, plate making and printing are performed. It is characterized in that the plate removal operation is always performed when the operation is performed.
According to a sixth means of the present invention, in the print control method of the fourth means, it is determined that there is no use history for a certain period or more based on the last use history information read from the storage member, and the last of the storage member When it is determined that use has been completed with the printing drum having a plate according to the use state information, if the user's selection from the operation panel selects that there is no plate on the drum, plate making In this case, the discharging operation is not performed when the printing operation is performed.

According to a seventh means of the present invention, in the print control method of the fourth means, it is determined that there is no use history for a predetermined period or more based on the last use history information read from the storage member, and the last use of the storage member is determined. If it is determined from the status information that the printing drum is not used and the use is finished, and if the user's selection from the operation panel selects that there is a plate on the drum, plate making and printing are performed. It is characterized in that the plate removal operation is always performed when the operation is performed.
According to an eighth means of the present invention, in the print control method of the fourth means, it is determined that there is no use history for a certain period or more based on the last use history information read from the storage member, and the last of the storage member If it is determined from the use state information that the printing drum has not been used in a state where the printing has been completed and the user's selection from the operation panel selects that there is no plate on the drum, plate making In this case, the discharging operation is not performed when the printing operation is performed.

  According to a ninth means of the present invention, in the printing control method of the fourth means, the printing apparatus main body is provided with a storage device, and the storage device stores the final use history information of the drum device and the final use at the end of printing. The state information is updated and stored as needed, and at the start of printing, the last use history information stored in the storage device, the last use state information, the last use history information read from the storage member, and When it is determined that there is no usage history for a certain period or more based on the final usage history information read from the storage member, a message for asking the user to confirm the status of the printing drum is compared with the final usage status information. Display on the operation panel, and from the operation panel, the user selects the result of confirming the presence or absence of the plate on the drum, and the last use status information stored in the storage device; And the final use of the state information of the storage member, said user a predetermined plate making by the selected information to, and performs the print process control.

According to a tenth means of the present invention, in the printing control method of the ninth means, it is determined that there is no use history for a certain period or more based on the last use history information read from the storage member, and the information is stored in the storage device. It is determined that the use has been completed in a state where the printing drum has a plate according to the last use state information, and the use is ended in a state in which the printing drum has a plate according to the last use state information read from the storage member. If it is determined that the plate is on the drum when the user's selection from the operation panel selects that there is a plate on the drum, the plate discharging operation is always performed when performing plate making and printing operations. .
According to an eleventh means of the present invention, in the printing control method of the ninth means, it is determined that there is no use history for a predetermined period or more based on the last use history information read from the storage member, and the storage device stores the use history. It is determined that the use has been completed in a state where the printing drum has a plate based on the final use state information, and is used in a state where the printing drum has a plate based on the final use state information read from the storage member. If it is determined that the operation has been completed and the user's selection from the operation panel selects that there is no plate on the drum, the plate discharging operation is not performed when performing plate making and printing operations. And

According to a twelfth means of the present invention, in the printing control method of the ninth means, it is determined that there is no use history for a certain period or more based on the last use history information read from the storage member, and the storage history is stored in the storage device. It is determined that the use has been completed in a state where the printing drum has a plate based on the last use state information, and the use is finished in a state where there is no plate in the printing drum based on the last use state information read from the storage member. If it is determined that the plate is on the drum when the user's selection from the operation panel selects that there is a plate on the drum, the plate discharging operation is always performed when performing plate making and printing operations. .
According to a thirteenth means of the present invention, in the print control method of the ninth means, it is determined that there is no use history for a predetermined period or more based on the last use history information read from the storage member, and the storage device stores the use history. It is determined that the use has been completed in a state where the printing drum has a plate based on the final use state information, and the printing drum is used in a state where there is no plate based on the final use state information read from the storage member. If it is determined that the operation has been completed and the user's selection from the operation panel selects that there is no plate on the drum, the plate discharging operation is not performed when performing plate making and printing operations. And

According to a fourteenth aspect of the present invention, in the print control method of the ninth means, it is determined that there is no usage history for a certain period or more based on the last usage history information read from the storage member, and the storage history is stored in the storage device. It is determined that the use has been completed without a plate on the printing drum according to the last use state information, and the use is finished with the plate on the print drum based on the last use state information read from the storage member. If it is determined that the plate is on the drum when the user's selection from the operation panel selects that there is a plate on the drum, the plate discharging operation is always performed when performing plate making and printing operations. .
According to a fifteenth means of the present invention, in the print control method of the ninth means, it is determined that there is no use history for a certain period or more based on the last use history information read from the storage member, and the storage device stores the use history. It is determined that the use has been completed in a state where there is no plate on the printing drum based on the final use state information, and the use is performed in a state where there is a plate on the print drum based on the final use state information read from the storage member. If it is determined that the operation has been completed and the user's selection from the operation panel selects that there is no plate on the drum, the plate discharging operation is not performed when performing plate making and printing operations. And

According to a sixteenth means of the present invention, in the printing control method of the ninth means, it is determined that there is no use history for a certain period or more based on the last use history information read from the storage member, and the information is stored in the storage device. It is determined that the use has been completed without the printing drum on the basis of the last use state information, and the use is finished with no plate on the printing drum based on the last use state information read from the storage member. If it is determined that the plate is on the drum when the user's selection from the operation panel selects that there is a plate on the drum, the plate discharging operation is always performed when performing plate making and printing operations. .
According to a seventeenth means of the present invention, in the printing control method of the ninth means, it is determined that there is no use history for a predetermined period or more based on the last use history information read from the storage member, and the storage device stores the use history. It is determined that the use has been completed in a state where there is no plate on the printing drum based on the state information on the final use, and the printing drum is used in a state where there is no plate based on the state information on the last use read from the storage member. If it is determined that the operation has been completed and the user's selection from the operation panel selects that there is no plate on the drum, the plate discharging operation is not performed when performing plate making and printing operations. And

  According to an eighteenth aspect of the present invention, there is provided a printing unit provided with a drum device having a printing drum, a plate making unit for making a plate according to image information and feeding the printing drum, and a used plate from the printing drum. A plate discharging unit for discharging the sheet, a paper feeding unit for feeding paper to the printing unit, a paper discharging unit for discharging the printed paper, a control unit for controlling these units, various information display and various settings An operation panel for supplying the ink to the plate-made plate wound around the outer peripheral surface of the printing drum of the drum device, supplying ink from inside the drum, and pressing the sheet against the plate In a stencil printing apparatus that prints an image corresponding to a plate-making image, a storage member is provided in either the drum device or an ink storage member attached to the drum device, and various information can be written to and read from the storage member. Possible writing Comprising only unit, the control section, the printing control method of any one means of the first to 17, discharge plate, plate-making, and performs control of the printing operation.

According to a nineteenth means of the present invention, in the stencil printing apparatus of the eighteenth means, a tag having an IC chip (IC tag) is used as the storage member, and a writing device for IC chip (IC chip) is used as the writing means.・ Lead writer).
According to a twentieth aspect of the present invention, in the stencil printing apparatus of the eighteenth or nineteenth means, the control unit of the printing apparatus main body includes a storage device, and the storage device includes the drum device at the end of printing. The last use history information and the last use status information are updated and stored as needed.

According to a twenty-first aspect of the present invention, in the stencil printing apparatus of the eighteenth or nineteenth means, plate detection means for detecting the presence or absence of a plate on the printing drum is provided, and the control unit detects the plate at the end of printing. The presence or absence of a plate on the printing drum is detected by means, and the detected information is written in the storage member (IC tag or the like) as one of the final use state information.
According to a twenty-second means of the present invention, in the stencil printing apparatus of the twentieth means, a plate detecting means for detecting the presence or absence of a plate on the printing drum is provided, and the control unit detects the plate detecting means at the end of printing. The presence / absence of a plate on the printing drum is detected, and the detected information is written into the storage member and stored in the storage device as one of final use state information.

  In the printing control method according to the first means of the present invention, the last usage history information of the drum device and the last usage status information are updated and stored in the storage member at the end of printing, and stored at the start of printing. Read the last use history information and last use status information stored in the member, determine whether there is a use history within a certain period based on the read last use history information, and release the plate based on the determination result By controlling the plate making and printing operations, normal and good printing can be performed even when a printing drum that has not been used for a certain period of time is used.

  In the printing control method of the second means of the present invention, it is determined that there is no usage history for a predetermined period or more based on the last usage history information read from the storage member, and the plate is placed on the printing drum based on the last usage status information of the storage member. If it is determined that the use has been completed in a certain state, a plate removal operation must be performed when performing plate-making and printing operations. When a printing drum that never occurred is used, the ink loosens and bleeds, and the plate detection means misdetects the presence or absence of the plate. It is possible to prevent an “abnormal image from occurring” and to perform good printing.

  In the printing control method of the third means of the present invention, it is determined that there is no usage history for a certain period or more based on the last usage history information read from the storage member, and the plate is placed on the printing drum based on the last usage status information of the storage member. If it is determined that the use has been completed in the absence of the plate, the plate is not discharged when the plate making or printing operation is performed. When the printing drum that never occurred is used, the ink loosens and bleeds, so the plate detection means misdetects the presence or absence of the plate, and the plate is ejected even if there is no plate, resulting in a plate ejection jam. '' This can be prevented and good printing can be performed.

  In the print control method of the fourth means of the present invention, when it is determined that there is no use history for a certain period or more based on the last use history information read from the storage member, a message is displayed to ask the user to confirm the state of the print drum. The result is displayed on the operation panel, and the result of confirming the presence or absence of the plate on the drum by the user is selected from the operation panel, and the predetermined use state information of the storage member and the information selected by the user By performing plate making and printing process control, when using a printing drum that has not been used for a certain period of time, a message that allows the user to check the state of the printing drum plate as well as judgment based on the information of the storage member It is possible to perform normal and good printing for more situations (for example, erroneous information on the storage member) by selecting the presence or absence of the plate.

  In the printing control method of the fifth means of the present invention, it is determined that there is no usage history for a certain period or more based on the last usage history information read from the storage member, and the plate is placed on the printing drum based on the last usage status information of the storage member. If it is determined that the use has been completed in a certain state and the user's selection from the operation panel selects that there is a plate on the drum, the plate discharge operation is always performed during plate making and printing operations. "When a printing drum is wound around the printing drum at the time of final printing and has not been used for a certain period of time, the ink is loosened and blotted, so that the plate detection means It is possible to reliably prevent the occurrence of erroneous detection, the plate removal operation is not performed even though the plate is present, and the apparatus malfunctions or an abnormal image is generated, and good printing can be performed.

  In the printing control method of the sixth means of the present invention, it is determined that there is no usage history for a certain period or more based on the last usage history information read from the storage member, and the plate is placed on the printing drum based on the last usage status information of the storage member. If it is determined that use has ended in some state and the user's selection from the operation panel selects that there is no plate on the drum, no plate removal operation is performed when performing plate-making and printing operations. Therefore, even when the last use status information of the storage member is stored in error, priority is given to the selection of the presence or absence of the plate by the user. When a printing drum that has never been used is used, the ink loosens and bleeds, so that the plate detection means erroneously detects the presence or absence of the plate, and the plate is discharged even if there is no plate. Na It is possible to reliably prevent that "it is possible to perform good printing.

  In the printing control method of the seventh means of the present invention, it is determined that there is no usage history for a certain period or more based on the last usage history information read from the storage member, and the plate is placed on the printing drum based on the last usage status information of the storage member. When it is determined that the use has been completed without any operation, if the user selects from the operation panel that there is a plate on the drum, the plate must be discharged during plate making and printing operations. Therefore, even when the last use status information of the storage member is stored in error, priority is given to the selection of the presence or absence of the plate by the user. When a printing drum that was never used is used, the ink loosens and bleeds, so that the plate detection means erroneously detects the presence or absence of the plate, and even though there is a plate, no plate removal operation is performed. Breakdown or Can be reliably prevented that the normal image is generated ", it is possible to perform good printing.

  In the printing control method of the eighth means of the present invention, it is determined that there is no usage history for a certain period or more based on the last usage history information read from the storage member, and the plate is placed on the printing drum based on the last usage status information of the storage member. If it is determined that the use has been completed without the user, and if the user selects from the operation panel that there is no plate on the drum, the plate removal operation is not performed during plate making and printing operations. "When a printing drum is wound around the printing drum at the time of final printing and has not been used for a certain period of time, the ink is loosened and blotted, so that the plate detection means It is possible to reliably prevent the occurrence of erroneous detection, the plate removal operation is not performed even though the plate is present, and the apparatus malfunctions or an abnormal image is generated, and good printing can be performed.

  In the printing control method of the ninth means of the present invention, a storage device is provided in the printing apparatus main body, and the final use history information and final use status information of the drum device are updated as needed at the end of printing in the storage device. At the start of printing, the last use history information and the last use status information stored in the storage device are compared with the last use history information read from the storage member and the last use status information. When it is determined from the last usage history information read from the storage member that there is no usage history for a certain period of time, a message is displayed on the operation panel asking the user to confirm the state of the printing drum, and the user can Selects the result of checking the presence or absence of the plate on the drum, and selects the final use status information stored in the storage device, the final use status information of the storage member, and the user's selection. The information of the storage device and the information of the storage member are compared when the printing drum is replaced and the printing drum that has not been used for a certain period of time is used. Can detect that the printing drum has been changed to another drum, and when the printing drum has been changed by issuing a message that prompts the user to check the printing drum plate status and selecting the presence or absence of the printing drum. In addition, normal and good printing can be performed.

  In the printing control method of the tenth means of the present invention, it is determined that there is no usage history for a certain period or more based on the final usage history information read from the storage member, and the printing drum is determined based on the final usage status information stored in the storage device. The operation panel is used when it is determined that the use is finished with the plate in the state, and the use is finished with the plate on the printing drum based on the last use state information read from the storage member. If the user selects from the top that there is a plate on the drum, the plate removal operation must be performed when performing plate-making and printing operations. When using a printing drum that has a plate wound around the printing drum and has not been used for a certain period of time after that, the ink will loosen and bleed, and the plate detection means will erroneously detect the presence or absence of the plate, Without plate discharge operation is there, failure or abnormal image devices can be reliably prevented that "occurs, it is possible to perform good printing.

  In the printing control method of the eleventh means of the present invention, it is determined that there is no usage history for a certain period or more based on the final usage history information read from the storage member, and the printing drum is determined based on the final usage status information stored in the storage device. The operation panel is used when it is determined that the use is finished with the plate in the state, and the use is finished with the plate on the printing drum based on the last use state information read from the storage member. When the user selects from the top that there is no plate on the drum, the printing drum is changed by not performing the plate discharging operation when performing plate making and printing operations, and the storage member is used for the final use. Even if the status information is stored in error, priority is given to the user's choice of the presence or absence of the plate. When the printing drum that was not used is used, the ink loosens and bleeds, so that the plate detection means erroneously detects the presence or absence of the plate, and even though there is no plate, the plate is discharged, resulting in a plate discharge jam. '' This can be reliably prevented, and good printing can be performed.

  In the printing control method of the twelfth means of the present invention, it is determined that there is no usage history for a certain period or more based on the final usage history information read from the storage member, and the printing drum is determined based on the final usage status information stored in the storage device. If it is determined that the use has been completed with the plate being present and the use has been completed without the plate on the printing drum according to the final use state information read from the storage member, the operation is performed. When the user selects from the panel that there is a plate on the drum, the printing drum is changed by always performing the plate removal operation during plate making and printing operations, and the final use of the storage member Even if the status information is stored incorrectly, priority is given to the user's selection of the presence or absence of the plate. When a printing drum that has never been used is used, the ink loosens and bleeds, and the plate detection means erroneously detects the presence or absence of the plate. It is possible to reliably prevent the occurrence of an abnormal image and to perform good printing.

  In the printing control method of the thirteenth means of the present invention, it is determined that there is no usage history for a certain period or more based on the final usage history information read from the storage member, and the printing drum is determined based on the final usage status information stored in the storage device. The operation panel is used when it is determined that the use has been completed with the plate being present, and the use has been completed without the plate on the printing drum based on the last use state information read from the storage member. If the user selects from the top that there is no plate on the drum, the plate removal operation is not performed when performing plate-making and printing operations. When a printing drum that is not wound on the printing drum and then used for a certain period of time is used, the ink loosens and bleeds, so that the plate detecting means erroneously detects the presence or absence of the plate, It is possible to reliably prevent that is discharged stencil jam performs plate discharge operation to free ", it is possible to perform good printing.

  According to a fourteenth aspect of the present invention, in the printing control method according to the ninth aspect, the final use stored in the storage device is determined that there is no use history for a certain period or more based on the final use history information read from the storage member. It is determined that the use has been completed in a state where there is no plate on the printing drum according to the state information, and it is determined that the use has been completed in a state where the plate exists on the printing drum based on the state information on the final use read from the storage member. If the user's selection on the operation panel selects that there is a plate on the drum, when the printing drum is changed by always performing the plate removal operation when performing plate making and printing operations In addition, “When a printing drum is wound around the printing drum at the time of final printing and has not been used for a certain period of time, the ink is loosened and bleeds, so that the plate detecting means has the presence of the plate. False causes detects the plate without the plate discharge operation is located, failure or abnormal image devices can be reliably prevented that "occurs, it is possible to perform good printing.

  In the printing control method of the fifteenth means of the present invention, it is determined that there is no usage history for a certain period or more based on the final usage history information read from the storage member, and the printing drum is determined based on the final usage status information stored in the storage device. The operation panel is used when it is determined that the use has been completed without the plate, and the use has been completed with the plate on the printing drum based on the last use state information read from the storage member. When the user selects from the top that there is no plate on the drum, the printing drum is changed by not performing the plate discharging operation when performing plate making and printing operations, and the storage member is used for the final use. Even if the status information is stored in error, priority is given to the user's choice of the presence or absence of the plate. When the printing drum that was not used is used, the ink loosens and bleeds, so that the plate detection means erroneously detects the presence or absence of the plate, and even though there is no plate, the plate is discharged, resulting in a plate discharge jam. '' This can be reliably prevented, and good printing can be performed.

  In the printing control method of the sixteenth means of the present invention, it is determined that there is no usage history for a certain period or more based on the final usage history information read from the storage member, and the printing drum is determined based on the final usage status information stored in the storage device. When it is determined that the use is finished without a plate in the printer, and the use is finished without a plate on the printing drum based on the last use state information read from the storage member, the operation panel When the user selects from the top that there is a plate on the drum, the printing drum is changed by always performing the plate removal operation when performing plate making and printing operations, and the final use of the storage member Even if the status information is stored in error, priority is given to the selection of the presence or absence of the plate by the user. Therefore, “The plate is wound on the printing drum at the time of final printing and then used for a certain period of time. When using a printing drum that does not, the ink loosens and bleeds, and the plate detection means misdetects the presence or absence of the plate. It is possible to reliably prevent the occurrence of an “image” and to perform good printing.

  In the printing control method of the seventeenth means of the present invention, it is determined that there is no usage history for a certain period or more based on the final usage history information read from the storage member, and the printing drum is determined based on the final usage status information stored in the storage device. When it is determined that the use is finished without a plate in the printer, and the use is finished without a plate on the printing drum based on the last use state information read from the storage member, the operation panel If the user selects from the top that there is no plate on the drum, the plate removal operation is not performed when performing plate-making and printing operations. When a printing drum that is not wound on the printing drum and then used for a certain period of time is used, the ink loosens and bleeds, so that the plate detecting means erroneously detects the presence or absence of the plate, It is possible to reliably prevent that is discharged stencil jam performs plate discharge operation to free ", it is possible to perform good printing.

  In the stencil printing apparatus of the eighteenth means of the present invention, a storage member is provided in either the drum device or the ink storage member attached to the drum device, and various information can be written to and read from the storage member. A printing drum provided with writing means, and the control unit has not been used for a certain period of time by controlling the discharge of the plate, the plate making, and the printing operation by the printing control method of any one of the first to seventeenth means. It is possible to perform normal and good printing even when using `` When using a printing drum that has a plate wound around the printing drum at the time of final printing and has not been used for a certain period of time after that, When the ink is loosened and smeared, the plate detection means erroneously detects the presence or absence of the plate, and even though there is a plate, the plate is not ejected and a device failure or abnormal image occurs. Time When a printing drum that has not been wound on the printing drum and has not been used for a certain period of time is used, the ink loosens and bleeds, and the plate detecting means erroneously detects the presence or absence of the plate. It is possible to surely prevent the occurrence of a plate-discharging jam by performing a plate-discharging operation without the presence of an image, and good printing can be performed.

In the stencil printing apparatus of the nineteenth means of the present invention, a tag having an IC chip (IC tag) is used as the storage member, and an IC chip writing device (IC chip lead writer) is used as the writing means. With the provision, the last use history information and the last use status information of the drum device can be updated and saved as needed with a simple configuration.
In the stencil printing apparatus of the twentieth means of the present invention, the control unit of the printing apparatus main body is provided with a storage device, and the storage device stores the final use history information of the drum device and the final use history at the end of printing. Since the status information is updated and stored as needed, it is possible to easily detect that the printing drum has been changed (replaced) by comparing the information in the storage device with the information in the storage member (IC tag). Appropriate printing control can be performed.

The stencil printing apparatus of the twenty-first means of the present invention comprises plate detecting means for detecting the presence or absence of a plate on the printing drum, and the control unit detects the presence or absence of the plate on the printing drum by the plate detecting means at the end of printing. By writing the detection information as one of the last used state information in a storage member (IC tag or the like), the last used state information of the printing drum can be automatically updated.
The stencil printing apparatus according to the twenty-second means of the present invention further comprises plate detecting means for detecting the presence / absence of a plate on the printing drum, and the control unit detects the presence / absence of a plate on the printing drum by the plate detecting means at the end of printing. By detecting and writing the detected information as one of the last used state information in the storage member and storing it in the storage device, the last used state information of the printing drum can be automatically updated. By comparing the information of the storage device and the information of the storage member (IC tag), it is possible to easily detect that the printing drum has been changed (replaced), and appropriate print control can be performed.

Hereinafter, an embodiment of the configuration and operation of the present invention will be described in detail with reference to the drawings.
First, based on FIGS. 1-3, the whole structure of the stencil printing apparatus concerning this invention, the platemaking, and the outline | summary of a printing process are demonstrated.
FIG. 1 is a schematic configuration diagram of a stencil printing apparatus showing an embodiment of the present invention. In this stencil printing apparatus, an image reading unit 2 for reading a document image is provided on the upper part of the apparatus body 1. A printing drum 20 composed of a porous plate cylinder, ink supply means, and the like is provided as a drum device constituting the printing unit at a substantially central portion in the apparatus main body 1 below the image reading unit 2. A plate making unit 9 is provided on the right side of the printing drum 20, and a plate discharging unit 38 is provided on the left side of the printing drum 20. Further, a sheet feeding unit 30 is disposed below the plate making unit 9, a pressure drum 31 serving as a pressing unit is disposed below the printing drum 20, and a sheet discharging unit 51 and a discharging unit serving as a sheet discharging unit 50 are disposed below the plate discharging unit 38. Paper bases 48 are provided.

  A plate cylinder constituting the printing drum 20 includes a pair of flanges (not shown) rotatably supported by a support shaft 21 also serving as an ink supply pipe, and a porous support plate wound around the outer peripheral surface of each flange. 1 and is rotationally driven in the direction of arrow A in FIG. 1 by a plate cylinder driving means (not shown). A plurality of small holes for supplying ink to the ink supply means are formed on the surface of the support shaft 12, and each flange is rotatably supported by the support shaft 12 via a bearing (not shown). An ink storage member (for example, an ink pack or an ink tank) that stores ink for supply is detachably attached to a portion of the support shaft 21 that also serves as the ink supply pipe.

  A porous support plate formed of a stainless steel thin plate or the like has an aperture portion with a large number of apertures and a non-aperture portion, and the circumferential length of the aperture portion is A3 size or the like. It is formed in a length that allows printing on a sheet of paper. A stage portion having a plane parallel to one generatrix of the printing drum 20 is disposed in the non-opening portion, and the upper surface of the stage portion is a latch that latches the tip of a plate (also referred to as a master) 11 described later. An openable / closable clamper 25 is provided as means. A mesh screen (not shown) made of polyester or stainless fine wire is wound on the outside of the opening of the porous support plate in about 1 to 3 layers.

  An ink supply unit having an ink roller 22, a doctor roller 23, and the like is disposed in a portion located inside the printing drum 20 and below the support shaft 12. The ink roller 22 is rotatably supported between a pair of side plates (not shown) fixed on the support shaft 12 between the flanges, and is driven to rotate in the same direction as the printing drum 20 by a driving means (not shown). The doctor roller 23 is disposed between the side plates so that its peripheral surface is close to the peripheral surface of the ink roller 22, and is rotated in a direction opposite to that of the ink roller 22 by a driving unit (not shown). In the vicinity of the ink roller 22 and the doctor roller 23, an ink reservoir 24 having a wedge shape in cross section is formed by the ink supplied from the support shaft 12. Further, an encoder (not shown) is attached to the printing drum 20, and position information of the printing drum 20 is input to the control unit 60 described later.

A pressure drum 31 serving as a pressing unit is disposed below the printing drum 20, and a paper locking member 31 a for locking the printing paper is provided on the pressure drum 31. In addition to the impression cylinder, as the pressing means, a press roller that can contact and separate from the printing drum 20 can be used.
In the vicinity of the lower left portion of the printing drum 20, there is disposed a plate detecting means 26 for detecting whether or not there is a plate wound around the printing drum 20, and detection information of the plate detecting means 26 is a control unit described later. 60.

  A plate making unit 9 is disposed on the upper right side of the printing drum (printing unit) 20. The plate making unit 9 includes a plate roll 10 for storing the plate 11 in a roll shape, a platen roller 12, a thermal head 13, cutters 14 and 15 as cutting means, tension roller pairs 16a and 16b, plate conveying roller pairs 18a and 18b, and the like. The unit is configured to be detachable from the apparatus main body 1.

A plate roll (also referred to as a master roll) 10 formed by winding a plate (master) 11 in which a thermoplastic resin film and a porous support are bonded together in a roll shape is rotatably supported by a plate roll holding member (not shown). Has been.
A platen roller 12 and a thermal head 13 are disposed downstream of the plate roll 10 in the plate conveyance direction. The platen roller 12 is rotatably supported on a side plate (not shown) of the plate making unit 9 and is driven to rotate by a stepping motor attached to the plate making unit 9.

  A thermal head 13 having a large number of heating elements on its upper surface is attached to a side plate (not shown) of the plate making unit 9 and is pressed against the peripheral surface of the platen roller 12 with a predetermined pressing force by a biasing force of a biasing means (not shown). Has been. The thermal head 13 selectively heats each heating element while contacting the thermoplastic resin film surface of the plate 11, and performs hot melt perforation plate making on the plate 11.

  Cutters 14 and 15 for cutting the plate 11 are disposed downstream of the platen roller 12 and the thermal head 13 in the plate conveyance direction. This cutter includes a movable blade 14 and a fixed blade 15, and is configured to cut the plate 11 when the movable blade 14 rotates and moves with respect to the fixed blade 15 fixed to the plate making unit 9.

  Tension roller pairs 16a and 16b, plate conveyance roller pairs 18a and 18b, and the like are disposed downstream of the cutters 14 and 15 in the plate conveyance direction. The tension roller pair 16a, 16b and the plate transport roller pair 25, 26 are respectively driven to drive rollers 16a, 18a that are driven to rotate in synchronization with each other by a driving means (not shown) and to each driving roller 16a, 18a by an urging means (not shown). The driven rollers 16b and 18b are in pressure contact with each other. Each drive roller 16a, 18a is provided with a clutch (not shown), and each drive roller 16a, 18a is configured to be rotatable by an external force without applying a load to the drive means.

  A box 17 is provided between the tension roller pair 16a, 16b and the plate conveying roller pair 18a, 18b to store the slack of the plate 11 that has been subjected to plate making when waiting for plate feeding. A plate guide plate (not shown) is disposed downstream of the plate conveying roller pair 18a and 18b in the plate conveying direction. The plate guide plate is fixed to a side plate (not shown) of the plate making unit 9, guides the plate 11 conveyed by the plate conveyance roller pair 18 a and 18 b, and guides the front end of the plate 11 to the outer peripheral surface of the printing drum 20.

A sheet feeding unit 30 is disposed below the plate making unit 9. The paper feed unit 30 includes a paper feed tray 32, a paper feed roller 34, a pair of separation rollers 35a and 35b, a pair of registration rollers 37a and 37b, and the like.
A paper feed tray 32 on which a large number of sheets 33 are stacked is supported by the apparatus main body 1 so as to be movable up and down, and is moved up and down by a lifting means (not shown). The paper feed tray 32 is provided with a plurality of paper size detection sensors (not shown) as paper size detection means for detecting the size of the stacked paper 33 and a pair of side fences (not shown) for guiding the paper 33. . Each sensor is a reflection type sensor, and the side fence has a well-known configuration that can move in synchronization with the paper width direction orthogonal to the paper transport direction. In this embodiment, the paper size detection sensor is configured to be able to detect each standard size of postcard length, A5 length, B5 length and width, A4 length and width, B4 width and A3 width.

  A sheet feeding roller 34 having a high friction resistance member on the surface is disposed above the sheet feeding tray 32, and a separation roller pair 35a having a high friction resistance member on the surface similarly on the downstream side in the sheet conveying direction. 35b is disposed. The paper feed roller 34 is brought into pressure contact with the paper 33 on the paper feed tray 32 at a predetermined pressure, and the paper feed roller 34 and the separation roller 35a are connected to a common force (not shown) via a driving force transmission means (not shown) such as a gear and a belt. The stepping motors are driven to rotate in synchronization with each other in the clockwise direction of FIG. The separation roller 35b is disposed in pressure contact with the separation roller 35a with a predetermined pressure contact force, and is configured to be intermittently rotated in the clockwise direction in FIG.

  A pair of registration rollers 37a and 37b is disposed on the downstream side in the paper transport direction from the pair of separation rollers 35a and 35b. The registration roller pair including the driving roller 37a and the driven roller 37b transmits the rotational driving force from a drum driving unit (not shown) by a driving force transmission unit (not shown) such as a gear or a cam, so that the driving roller 37a is connected to the printing drum 20. The paper 33 is fed toward the printing drum 20 of the printing unit by the driven roller 37b that is rotated at a predetermined timing synchronized with the driven roller 37a and is in pressure contact with the driving roller 37a.

A plate discharging portion 38 is disposed on the upper left side of the printing drum 20. The plate discharge unit 38 includes a plate release roller pair 39a, 39b, a plate discharge roller pair 40a, 40b wound around the plate discharge roller pair 41a, 41b, a compression plate 42, a plate release box 43, and the like.
The ejected plate peeling roller pair 39a, 39b is rotated by a driving means (not shown) to rotate the ejected plate conveying belt pair 40a, 40b. Further, the lower discharge plate conveying belt 40b is configured to be movable by a moving means (not shown), and is selectively moved to a position shown in FIG. 1 and a position where it abuts on the outer peripheral surface of the printing drum 20.
The plate removal box 43 for storing the used plate 11 therein is configured to be detachable from the apparatus main body 1. The compression plate 42 for compressing the used plate 11 carried into the plate discharging box 43 by the plate discharging belt pair 40a, 40b moves up and down by a lifting means (not shown).

  A paper discharge unit 50 is disposed below the plate discharge unit 38. The paper discharge unit 50 includes a paper discharge peeling claw 44, a paper discharge conveying means 51, a paper discharge tray 48, and the like. A paper discharge peeling claw 44 for peeling the printed paper 33 from the outer peripheral surface of the printing drum 20 is supported on a side plate (not shown) of the paper discharge unit 50 by a support shaft so as to be swingable. As a result, the front end of the print drum 20 is selectively swung to a position where the front end is close to the outer peripheral surface of the print drum 20 and a position where the front end does not interfere with an obstacle such as the clamper 25 that is moved by the rotation of the print drum 20.

  The paper discharge transport unit 51 includes a suction paper discharge inlet roller 45a, a suction paper discharge roller 45b, a transport belt 46, a suction fan 57, and the like. The suction discharge outlet roller 45b is rotatably supported by a unit side plate (not shown) and is driven to rotate by a rotation driving means (not shown). The suction paper discharge inlet roller 45a is also rotatably supported on the same side plate, and a conveyance belt 46 having a plurality of openings is stretched between the suction paper discharge inlet roller 45a and the suction paper discharge outlet roller 45b. A suction fan 47 attached to the bottom surface of a unit main body (not shown) having a casing shape is disposed below the transport belt 46. The paper discharge transport unit 51 sucks the printed paper 33 onto the transport belt 46 by the suction force of the suction fan 47 and transports the paper 33 to the paper discharge tray 48.

  A paper discharge tray 48 on which the printed paper 33 conveyed by the paper discharge conveying means 51 is stacked is a pair of side fences movable in the paper width direction and one end fence movable in the paper conveyance direction. And have. The side fence has a well-known configuration that can move in synchronization with each other in the paper width direction.

An image reading unit 2 is disposed on the upper part of the apparatus main body 1. The image reading unit 2 includes a contact glass 4 on which the document 3 is placed, a pressure plate provided so as to be able to contact with and separate from the contact glass 4, an illumination lamp 5 for scanning and reading a document image, mirror groups 6 and 6a, A scanning unit having 6b, a lens 7 for focusing the scanned image, an image sensor 8 such as a CCD (charge coupled device) for processing the focused image, and the like.
A document size detection sensor (not shown) that detects the presence and size of the document 3 placed on the contact glass 4 is disposed below the contact glass 4. In the present embodiment, the document size detection sensor is configured to be able to detect each standard size of postcard length, A5 length, B5 length and width, A4 length and width, B4 width and A3 width.

  Next, FIG. 2 is a block diagram showing an example of a control system used in the stencil printing apparatus shown in FIG. The control unit 60 disposed in the apparatus main body 1 includes a CPU 61 that is an arithmetic processing unit, a known microcomputer including a memory (ROM 62, RAM 63), and the like, and a timing unit such as a storage device 64, a clock (not shown), a timer, and the like. And a counting means such as a counter (not shown). The ROM 61 stores a program for controlling the operation of the entire stencil printing apparatus 1 (image reading unit 2, printing unit (drum device) 20, plate making unit 9, plate discharging unit 38, paper feeding unit 30, paper discharge unit 50, etc.). The RAM 101 stores plate making conditions such as document type or magnification, printing conditions such as the number of printed sheets or printing speed, and the like. As the storage device 64, for example, various readable / writable nonvolatile memories (various card type memories, flash memories, etc.), a hard disk drive (HDD), and the like are appropriately used. Various information such as final use history information and final use status information of the drum device (printing drum) 20 is stored. Further, the control unit 60 is connected with an operation panel 80 for displaying various information to the user and for performing various settings by the user. In addition, the control unit 60 stores the above-mentioned final use history information and the final information in a storage device (for example, an IC tag) 71 provided in either the drum device or an ink storage member (for example, an ink pack) attached to the drum device. A writing device (also referred to as a read / writer) for writing and reading various information such as usage status information is connected. Furthermore, the control unit 60 includes a plate detection unit 26 that detects the presence or absence of a plate (master) on the printing drum, each unit (image reading unit 2, printing unit (drum device) 20, plate making unit 9, plate discharging unit). 38, various paper sensors (not shown) provided in the paper feed unit 30, paper discharge unit 50, etc. are connected.

  FIG. 3 shows an example of the operation panel of the stencil printing apparatus shown in FIG. An operation panel 80 provided on the upper front surface of the apparatus main body 1 has a plate making start key 81, a printing start key 82, a test printing key 83, a continuous key 84, a clear / stop key 85, a numeric key 86, an enter key 87 on the upper surface. Program key 88, mode clear key 89, printing speed setting key 90, four-direction key 91, display device 92 composed of 7-segment LED, display device 93 composed of LCD, repeat key 102 and aggregation key 103 for performing image division printing A double-sided key 104 for performing double-sided printing and its display lamp 104a, a single-sided key 105 for performing single-sided printing and its display lamp 105a, and the like.

  The plate making start key 81 is pressed when the printing apparatus 1 performs a plate making operation. When the plate making start key 81 is pressed after various plate making conditions are set, the plate making operation is performed after the plate discharging operation and the image reading operation are performed. After that, a printing operation is performed, and the printing apparatus 1 enters a print standby state. The print start key 82 is pressed when the printing apparatus 1 performs a printing operation, and the printing operation is performed by pressing the print start key 82 after the printing apparatus 1 is in a print standby state and various printing conditions are set. . The trial printing key 83 is pressed when causing the printing apparatus 1 to perform trial printing, and only one sheet is printed by pressing the trial printing key 83 after various conditions are set. The continuous key 84 is pressed before pressing the plate-making start key 81 when performing the plate-making operation and printing operation continuously. After pressing the continuous key 84, the plate-making start key 81 is input after the plate-making conditions and printing conditions are input. When pressed, a printing operation is performed following the plate ejection operation, image reading operation, plate making operation, and plate making operation.

  The clear / stop key 85 is pressed when the operation of the printing apparatus 1 is stopped or when the numerical value is cleared, and the numeric keypad 86 is used for numerical value input. The enter key 87 is pressed to determine a numerical value or the like at various settings, and the program key 88 is pressed to register or call an operation frequently performed, and the mode clear key 89 is used to clear various modes to be initialized. Pressed when returning to the state. The printing speed setting key 90 is pressed when setting the printing speed prior to the printing operation. When a darker image is desired or when the ambient temperature is low, the printing speed is slowed down and a thinner image is desired. If the ambient temperature is high, set the printing speed fast. The four-direction key 91 has an up key 91a, a down key 91b, a left key 91c, and a right key 91d. When adjusting the image position during image editing or when selecting a value or item at various settings, etc. Is pressed.

  A display device 92 composed of a 7-segment LED mainly displays numbers such as the number of printed sheets. As shown in FIG. 3, the display device 93 composed of an LCD displays an original type setting display, a scaling setting display, a paper type setting display, and a position adjustment setting display as shown in FIG. Selection setting keys 94, 95, 96, and 97 corresponding to the display are provided. The display device 93 has a hierarchical display structure. When the selection setting key 94 is pressed from the state shown in FIG. 3, the document type setting mode for setting the character mode, the photo mode, etc. as the document image mode is selected and set. A paper type setting for setting a standard paper, a thick paper, or the like as a paper to be used when the selection setting key 96 is pressed in a scaling setting mode for selecting and setting automatic scaling or independent scaling when the key 95 is pressed. When the selection setting key 97 is pressed, the mode is set to the position adjustment setting mode for adjusting the printing position, and the display on the display device 93 changes corresponding to each mode. The display device 93 also has various error information and warning display functions, various settings and selection information display functions, and the like.

The repeat key 102 and the aggregation key 103 are pressed before pressing the plate making start key 81 when performing image division printing. The repeat key 102 is pressed when repeat printing is performed to form a plurality of images of one document on one sheet, and the aggregation key 103 is an aggregation that forms a plurality of images of a plurality of documents on one sheet. Pressed when printing.
A double-sided key 104 for performing double-sided printing and its display lamp 104a, and a single-sided key 105 for performing single-sided printing and its display lamp 105a are provided when the printing apparatus can perform double-sided printing, and perform double-sided printing. It is pressed when selecting whether to perform single-sided printing.

Next, an example of the operation of the stencil printing apparatus having the above configuration will be described.
After placing the document 3 having an image to be printed on the contact glass 4 and pressing the continuous key 84 on the operation panel 80 shown in FIG. 3 to set the document type, variable magnification, paper type and the like, The test printing key 83 is pressed, and the plate making start key 81 is pressed. Along with pressing of the plate making start key 81, a plate discharging process is executed as necessary. That is, when the used plate (not shown) used in the previous printing remains attached to the outer peripheral surface of the printing drum 20, a plate discharging process is executed. Note that a printing control method for determining whether or not to perform this plate discharging process by the control unit 60 prior to the start of the plate making and printing process will be described in the embodiments described later.

When the plate discharging process is executed, the printing drum 20 rotates clockwise, and when the rear end of the used plate on the outer peripheral surface of the printing drum 20 approaches the plate discharging peeling roller pair 39a, 39b, 39a and 39b scoop up the rear end of the used plate while rotating.
The used plate is illustrated by a pair of discharge plate conveying belts 40a and 40b wound around a pair of discharge plate rollers 41a and 41b disposed on the left side of the pair of discharge plate peeling rollers 39a and 39b and the pair of discharge plate peeling rollers 39a and 39b. While being transported in the middle left direction, the sheet is discharged into the discharge box 43 and is peeled off from the outer peripheral surface of the printing drum 20 to complete the discharge process. At this time, the printing drum 20 continues to rotate in the clockwise direction. The used plate that has been peeled and discharged is then compressed inside the plate discharging box 43 by the compression plate 42.

In parallel with the plate removal process, the image reading unit 2 reads an image. The electrical signal photoelectrically converted by the image sensor 8 is input to an analog / digital (A / D) conversion board (not shown) in the apparatus body 1 and converted into a digital image signal.
On the other hand, in parallel with this image reading operation, plate making and plate feeding processes are performed based on the image information converted into digital signals. That is, the plate 11 of the plate roll 10 set at a predetermined portion of the plate making unit 9 is pulled out of the roll state and pressed against the thermal head 13 via the plate 11 and the tension roller pairs 16a and 16b. It is conveyed to the downstream side of the conveyance path by the rotation of.
For the plate 11 thus conveyed, a plurality of minute heating elements arranged in a line on the thermal head 13 are selected in accordance with a digital image signal sent from an A / D conversion board (not shown). The thermoplastic resin film of the plate 11 in contact with the generated heat generating part is melted and perforated. In this way, the image information is written as a perforation pattern by position-selective melt perforation of the plate 11 according to the image information.

The front end of the plate 11 on which the image information is written is sent out toward the outer peripheral surface of the printing drum 20 by the plate feeding roller pair 18a and 18b, and the traveling direction is changed downward by a guide member (not shown). The printing drum 20 in the state hangs down toward the expanded clamper 25 (this state is not shown in FIG. 1). At this time, the used drum has already been removed from the printing drum 20 by the discharging process.
When the tip of the pre-made plate 11 is clamped by the clamper 25 at a fixed timing, the printing drum 20 is gradually wound around the outer peripheral surface while rotating in the direction A (clockwise direction) in the drawing. To go. The rear end portion of the plate 11 after the plate making is cut into a fixed length by the cutters 14 and 15.

  When one plate-made plate 11 is wound around the outer peripheral surface of the printing drum 20, the plate-making and plate-feeding steps are finished, and the printing step is started. First, the uppermost one of the printing sheets 33 stacked on the sheet feeding table 32 of the sheet feeding unit 30 is directed toward the feed roller pair 37a, 37b by the sheet feeding roller 34 and the separation roller pair 35a, 35b. Further, it is sent to the printing pressure portion (the contact portion between the printing drum 20 and the pressure drum 31) at a predetermined timing synchronized with the rotation of the printing drum 20 by the registration roller pair 37a and 37b. The fed printing paper 33 is transported by the rotation of the pressure drum 31, with the leading end thereof locked by the paper locking member 31 a of the pressure drum 31. The printing paper 33 is pressed by the impression cylinder 31 against the pre-made plate 11 wound around the outer peripheral surface of the printing drum 20.

At this time, in the printing drum 20, ink is supplied from an ink supply pipe 21 that also serves as a support shaft to an ink reservoir 24 formed between the ink roller 22 and the doctor roller 23. Ink is supplied to the inner peripheral side of the printing drum 20 by the ink roller 22 that contacts the inner peripheral surface while rotating in synchronization with the rotation speed of the printing drum 20 in the same direction as the rotation direction of the printing drum 20. The
By the pressing operation by the pressure drum 31, ink oozes out from the porous support plate of the printing drum 20 and the perforated pattern portion (both not shown) of the plate-making plate 11, and the oozed ink is applied to the surface of the printing paper 33. Transferred to form a printed image.

  The printing paper 33 on which the printing image is formed in the printing pressure part is peeled off from the printing drum 20 by the paper discharge peeling claw 44 and sucked to the transport belt 46 by the suction fan 47 of the paper discharge transport means 51 of the paper discharge part 50. On the other hand, the conveyance belt 46, which is stretched around the suction discharge inlet roller 45a and the suction discharge outlet roller 45b, is rotated toward the discharge tray 48 and sequentially discharged and stacked. In this way, so-called trial printing is completed.

  Next, when the number of prints is set with the numeric keypad 87 of the operation panel 80 shown in FIG. 3 and the print start key 82 is pressed, printing is started in the same process as the test printing, and each of the paper feeding, printing, and paper discharging is performed. The process is repeated for the set number of printed sheets, and the entire printing process is completed.

The above is an example of the configuration of the stencil printing apparatus according to the present invention and normal plate making and printing operations. In the stencil printing apparatus of the present invention, the ink installed in the drum device (printing drum) 20 of the printing unit or the drum device. A storage member (for example, an IC tag) 71 is provided in one of the storage members (for example, ink packs).
In the storage member 71, the last use history information of the drum device (print drum) 20 and the last use state information are updated and stored as needed at the end of printing. At the start of printing, the control unit 60 stores the storage member 71 reads out the last use history information and the last use status information stored in 71, determines whether or not there is a use history within a certain period based on the read last use history information, and releases the plate based on the determination result Control of plate making and printing operations.

As the storage member 71, there is a magnetic tape or the like, but an IC tag that is easy to write and read and has a large amount of storage is suitable.
Although illustration is omitted, this IC tag is electrically connected to a well-known IC chip having a memory for storing information on a seal-like or sheet-like tag, an antenna unit for wireless communication with the outside, and the IC chip. As shown in FIG. 2, the information in the memory is contactless by an IC chip writing device (IC chip read / writer) 70 connected to the controller 60 as shown in FIG. Are written and read out. Further, since the IC tag 71 has a thin seal shape or sheet shape, the IC tag 71 can be used by being attached to a side plate of an printing drum, an ink pack, or the like. If a writing device (IC chip / read / writer) 70 is installed in the vicinity of the IC tag 71, information can be written and read without contact.

Further, the stencil printing apparatus of the present invention is provided with plate detecting means 26 for detecting the presence or absence of a plate on the printing drum. As the plate detecting means 26, a method of optical detection using the reflective optical sensor described in Patent Document 2 previously proposed by the present applicant, or a movable electrode described in Patent Document 3 is used. For example, an electrical detection type can be suitably used.
At the end of printing, the control unit 60 detects the presence or absence of a plate on the printing drum by the plate detecting means 26, and uses the detected information as one of the final use state information by a writing device (IC chip / read / writer) 70. Write to the storage member (IC tag) 71.

Further, in the stencil printing apparatus of the present invention, the final use history information and final use status information of the drum device (printing drum) 20 are also stored in the storage device 64 provided in the control unit 60 of the printing apparatus main body at the end of printing. It can be updated and stored at any time.
Then, the control unit 60 detects the presence or absence of the plate on the printing drum by the plate detecting means 26 when printing is completed, and uses the detected information as one of the final use state information to write the device (IC chip / read / writer). At 70, the data is written in the storage member (IC tag) 71 and stored in the storage device 64.
At the start of printing, the control unit 60 reads the last use history information and the last use state information stored in the storage member 71, and compares the information with the information stored in the storage device 64 as necessary. Based on the read information, the control of the plate ejection, plate making and printing operations is performed.

  Next, an example of a print control process executed by the control unit 60 of the stencil printing apparatus of the present invention will be described.

[Example 1]
First, embodiments of the first to third means of the present invention will be described.
FIG. 4 is a flowchart showing an example of a print control processing operation executed by the control unit 60 of the stencil printing apparatus shown in FIG. In this flowchart, it is described from the end of printing (S1-1). However, when the printing apparatus is used, it starts from the “standby or stopped state” in step (S1-4).

In the stencil printing apparatus of this embodiment, as described above, a storage member (here, an IC pack) is provided in either the drum unit (printing drum) 20 of the printing unit or the ink storage member (for example, ink pack) attached to the drum unit. 71).
The IC tag 71 has final use history information (date, time, etc.) of the drum device (print drum) 20 and final use status information (whether a plate is wound around the print drum 20) at the end of printing. ) Is updated and written and stored at any time (S1-1) to (S1-3). When the writing of information to the IC tag 71 is completed, the printing apparatus is in a standby or stopped state (S1-4) to (S1-5). It should be noted that turning off / on the power of the printing apparatus, exchanging the printing drum, exchanging ink packs, setting various printing conditions, and the like are performed at this point.

  When the printing apparatus is turned on and various printing conditions are set and then the plate making start key 81 is pressed, the plate making and printing start state is entered, and the control unit 60 starts the IC tag at the start of printing. The last use history information and the last use status information stored in 71 are read by the writing device 70 (S1-6), and it is determined whether there is a use history within a certain period based on the read last use history information. (S1-7) to (S1-8), and based on the determination result, the above-mentioned plate ejection, plate making and printing operations are controlled.

  More specifically, if it is determined in step (S1-8) that there is a usage history within a certain period based on the final usage history information read from the IC tag 71, the above-described normal plate making A printing operation is executed (S1-9). In this case, the presence or absence of the plate on the drum is detected by the plate detection means 26. If there is a plate, the plate removal operation is executed. If there is no plate, the plate making operation and the printing operation are performed without performing the plate discharge operation. To finish printing (S1-9) → (S1-1). At the end of printing, the IC tag 71 has the last use history information (date, time, etc.) of the drum device (print drum) 20 and the last use status information (whether a plate is wound around the print drum 20, etc.). It is updated and written as needed and stored (S1-1) to (S1-3). When the writing of information to the IC tag 71 is completed, the printing apparatus is in a standby or stopped state (S1-4) to (S1-5).

Next, it is determined in step (S1-8) that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and the printing drum 20 is determined based on the final usage status information of the IC tag 71. When it is determined that the use has been completed in a state where there is a plate (S1-10) to (S1-11), a plate discharging operation is always performed when performing plate making and printing operations (S1-12), After the plate removal operation is executed, plate making and printing operations are executed (S1-14). Then, after the plate making and printing operations are executed, the printing is terminated (S1-14) → (S1-1).
By the above control, “the plate is wound around the printing drum 20 at the time of final printing, and when the printing drum 20 that has not been used for a certain period of time is used, the ink loosens and spreads, so that the plate detecting means 26 Can detect the presence or absence of a plate, and even if a plate is present, it does not perform a plate removal operation, resulting in device failure or abnormal images. it can.

In step (S1-8), it is determined that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and the final usage status information of the IC tag 71 indicates to the printing drum 20 If it is determined that the use has been completed in the absence of the plate (S1-10) to (S1-11), the plate making operation is not performed during the plate making and printing operations (S1-13), and the plate making is performed. Then, the printing operation is executed (S1-14). Then, after the plate making and printing operations are executed, the printing is terminated (S1-14) → (S1-1).
By the above control, “the plate is not wound around the printing drum 20 at the time of final printing, and when the printing drum 20 that has not been used for a certain period of time is used, the ink loosens and spreads, so that the plate detecting means 26 ”Erroneously detects the presence or absence of a plate, and a plate discharge operation is performed when there is no plate, resulting in a plate discharge jam”, and good printing can be performed.

  At the end of printing, the last use history information (date, time, etc.) of the drum device (print drum) 20 and the last use status information (whether a plate is wound around the print drum 20 or the like) are printed on the IC tag 71. ) Is updated and written and stored at any time (S1-1) to (S1-3). When the writing of information to the IC tag 71 is completed, the printing apparatus is in a standby or stopped state (S1-4) to (S1-5).

[Example 2]
Next, embodiments of the first, fourth to eighth means of the present invention will be described.
5 and 6 are flowcharts showing an example of a print control processing operation executed by the control unit 60 of the stencil printing apparatus shown in FIG. Also in this flowchart, it is described from the end of printing (S2-1). However, when the printing apparatus is used, it starts from the “standby or stopped state” in step (S2-4).

In the stencil printing apparatus of this embodiment, as described above, a storage member (here, an IC pack) is provided in either the drum unit (printing drum) 20 of the printing unit or the ink storage member (for example, ink pack) attached to the drum unit. 71).
The IC tag 71 has final use history information (date, time, etc.) of the drum device (print drum) 20 and final use status information (whether a plate is wound around the print drum 20) at the end of printing. ) Are updated and written and stored as needed (S2-1) to (S2-3). Then, when the writing of information to the IC tag 71 is completed, the printing apparatus enters a standby state or a stopped state (S2-4) to (S2-5). It should be noted that turning off / on the power of the printing apparatus, exchanging the printing drum, exchanging ink packs, setting various printing conditions, and the like are performed at this point.

  When the printing apparatus is turned on and various printing conditions are set and then the plate making start key 81 is pressed, the plate making and printing start state is entered, and the control unit 60 starts the IC tag at the start of printing. The last use history information and the last use status information stored in 71 are read by the writing device 70 (S2-6), and it is determined whether or not there is a use history within a certain period based on the read last use history information. (S2-7) to (S2-8), and based on the determination result, the above-described plate ejection, plate making and printing operations are controlled.

  More specifically, if it is determined in step (S2-8) that there is a usage history within a certain period based on the final usage history information read from the IC tag 71, the above-described normal plate making A printing operation is executed (S2-9). In this case, the presence or absence of the plate on the drum is detected by the plate detection means 26. If there is a plate, the plate removal operation is executed. If there is no plate, the plate making operation and the printing operation are performed without performing the plate discharge operation. To finish printing (S2-9) → (S2-1). At the end of printing, the IC tag 71 has the last use history information (date, time, etc.) of the drum device (print drum) 20 and the last use status information (whether a plate is wound around the print drum 20, etc.). It is updated and written as needed and stored (S2-1) to (S2-3). Then, when the writing of information to the IC tag 71 is completed, the printing apparatus enters a standby state or a stopped state (S2-4) to (S2-5).

  Next, when it is determined in step (S2-8) that there is no usage history for a predetermined period or more based on the final usage history information read from the IC tag 71, printing is performed based on the final usage status information of the IC tag 71. It is determined whether the use has been completed with the drum 20 having a plate, or the use has been completed with no plate on the printing drum 20 (S2-10) to (S2-11). A message prompting the user to confirm the state of the printing drum 20 is displayed on the operation panel 80 according to the determination result, and the result of the user confirming the presence or absence of the plate on the drum is selected from the operation panel 80. Then, predetermined plate making and printing process control (control of A or B in FIG. 6) is performed based on the state information of the last use of the IC tag 71 and the information selected by the user. As a result, when the printing drum 20 that has not been used for a certain period of time is used, not only the determination based on the information of the IC tag 71 but also a message that prompts the user to check the state of the printing drum 20 is issued. By selecting the presence / absence, normal and satisfactory printing can be performed for more situations (for example, erroneous information on the storage member).

More specifically, it is determined in step (S2-8) that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and the status information on the final usage of the IC tag 71 is determined. (S2-10) to (S2-11) → (B in FIG. 6), the user selects from the operation panel 80 when it is determined that the use has been completed with the printing drum 20 having a plate. When it is selected that there is a plate on the drum (S2-17) to (S2-18), a plate discharging operation is always performed when performing plate making and printing operations (S2-19). A printing operation is executed (S2-21). Then, after the plate making and printing operations are executed, the printing is terminated (S2-21) → (S2-1).
By the above control, “the plate is wound around the printing drum 20 at the time of final printing, and when the printing drum 20 that has not been used for a certain period of time is used, the ink loosens and spreads, so that the plate detecting means 26 Can detect that the presence or absence of the plate is erroneously detected, and does not perform the plate removal operation even if the plate is present, resulting in device failure or abnormal images. it can.

In step (S2-8), it is determined that there is no usage history for a certain period or more based on the last usage history information read from the IC tag 71, and the printing drum 20 is determined based on the last usage status information of the IC tag 71. When it is determined that the use is finished in a state where there is a plate (S2-10) to (S2-11) → (B in FIG. 6), the user's selection from the operation panel 80 indicates that the plate is on the drum. When it is selected that there is no (S2-17) to (S2-18), the plate making operation is not performed when performing the plate making and printing operations (S2-20), and the plate making and printing operations are executed (S2-21). ). Then, after the plate making and printing operations are executed, the printing is terminated (S2-21) → (S2-1).
With the above control, even when the last use status information of the IC tag 71 is stored in error, priority is given to the selection of the presence / absence of the plate by the user. After that, when the printing drum 20 that has not been used for a certain period of time is used, the ink is loosened and blotted, so that the plate detecting means 26 erroneously detects the presence or absence of the plate, and the plate is discharged even though there is no plate. Can be reliably prevented, and good printing can be performed.

Furthermore, it is determined in step (S2-8) that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and the printing drum 20 is determined based on the final usage status information of the IC tag 71. (S2-10) to (S2-11) → (A in FIG. 6), when the user selects from the operation panel, the plate is displayed on the drum. If it is selected (S2-12) to (S2-13), the plate making operation is always performed when performing the plate making and printing operations (S2-14), and the plate making and printing operations are executed after the plate making operation is executed. (S2-16). Then, after the plate making and printing operations are executed, the printing is terminated (S2-16) → (S2-1).
By the above control, even if the last use status information of the IC tag 71 is stored in error, the user gives priority to the selection of the presence or absence of the plate. Then, when the printing drum 20 that has not been used for a certain period of time is used, the ink is loosened and blotted, so that the plate detecting means 26 erroneously detects the presence or absence of the plate, and the plate is discharged even though there is a plate. It is possible to reliably prevent the occurrence of an apparatus failure or an abnormal image without performing the above, and good printing can be performed.

Furthermore, it is determined in step (S2-8) that there is no usage history for a certain period or more based on the last usage history information read from the IC tag 71, and the final usage status information of the IC tag 71 is used for the print drum. When it is determined that the use is finished without a plate (S2-10) to (S2-11) → (A in FIG. 6), the user's selection from the operation panel 80 indicates that the plate is on the drum. If no selection is made (S2-12) to (S2-13), the plate making operation is not performed when performing the plate making and printing operations (S2-15), and the plate making and printing operations are executed (S2-16). ). Then, after the plate making and printing operations are executed, the printing is terminated (S2-16) → (S2-1).
As a result of the above control, “the plate is wound around the printing drum 20 at the time of final printing, and then the printing drum 20 that has not been used for a certain period of time is used to loosen and bleed the ink. It is possible to reliably prevent the detection means 26 from erroneously detecting the presence or absence of a plate and performing a plate removal operation without performing a plate removal operation, resulting in a failure of the apparatus or an abnormal image. It can be carried out.

  At the end of printing, the last use history information (date, time, etc.) of the drum device (print drum) 20 and the last use status information (whether a plate is wound around the print drum 20 or the like) are printed on the IC tag 71. ) Are updated and written and stored at any time (S2-1) to (S2-3). Then, when the writing of information to the IC tag 71 is completed, the printing apparatus enters a standby state or a stopped state (S2-4) to (S2-5).

[Example 3]
Next, examples of the first, fourth, ninth to seventeenth means of the present invention will be described.
7 to 9 are flowcharts showing an example of a print control processing operation executed by the control unit 60 of the stencil printing apparatus shown in FIG. Also in this flowchart, it is described from the end of printing (S3-1). However, when the printing apparatus is used, it starts from the “standby or stop state” in step (S3-5).

In the stencil printing apparatus of this embodiment, as described above, a storage member (here, an IC pack) is provided in either the drum unit (printing drum) 20 of the printing unit or the ink storage member (for example, ink pack) attached to the drum unit. 71), and at the end of printing, the last use history information (date, time, etc.) of the drum device (print drum) 20 and the last use status information (whether the plate is wound around the print drum 20) Whether or not) is updated and written and saved at any time.
In the present embodiment, the storage device 64 provided in the control unit 60 of the printing apparatus main body also stores the last use history information (date, time, etc.) of the drum device (print drum) 20 and the last use at the end of printing. Status information (whether a plate is wound around the printing drum 20 or the like) is updated and stored as needed.

That is, in this embodiment, the control unit 60, when printing is finished, last usage history information (date, time, etc.) of the drum device (printing drum) 20 and last usage status information (print drum is wound around the printing drum 20). And the like are stored in the storage device 64 and written to the IC tag 71 (S3-1) to (S3-4).
Then, when the writing of information to the storage device 64 and the IC tag 71 is completed, the printing device enters a standby or stopped state (S3-5) to (S3-6). It should be noted that turning off / on the power of the printing apparatus, exchanging the printing drum, exchanging ink packs, setting various printing conditions, and the like are performed at this point.

  When the printing apparatus is turned on and various printing conditions are set and then the plate making start key 81 is pressed, the plate making and printing start state is entered, and the control unit 60 stores the storage device at the start of printing. 64 reads the last use history information and the last use status information stored in 64, and reads the last use history information and the last use status information stored in the IC tag 71 by the writing device 70 (S3-7). (S3-8), the last use history information and the last use state information stored in the storage device 64 are compared with the last use history information and the last use state information read from the IC tag 71 ( S3-9). Then, it is determined whether or not there is a usage history within a certain period based on the last usage history information read from the IC tag 71 (S3-10), and based on the determination result, the above-described plate ejection, plate making, Controls printing operations.

  More specifically, if it is determined in step (S3-10) that there is a usage history within a certain period based on the final usage history information read from the IC tag 71, the above-described normal plate making A printing operation is executed (S3-11). In this case, the presence or absence of the plate on the drum is detected by the plate detection means 26. If there is a plate, the plate removal operation is executed. If there is no plate, the plate making operation and the printing operation are performed without performing the plate discharge operation. To finish printing (S3-11) → (S3-1). At the end of printing, the storage device 64 and the IC tag 71 have the last usage history information (date, time, etc.) of the drum device (printing drum) 20 and the last use status information (whether the plate is wound around the printing drum 20). Or the like) is updated and written as needed and stored (S3-1) to (S3-4). Then, when the writing of information to the storage device 64 and the IC tag 71 is completed, the printing device enters a standby or stopped state (S3-5) to (S3-6).

  Next, if it is determined in step (S3-10) that there is no usage history for a certain period or longer, the last use status information stored in the storage device 64 of the control unit 60 is used to print the plate on the drum. Is determined ((S3-12) → (S3-13) in FIG. 8), and the final use status information read from the IC tag 71 is used to determine the presence or absence of a plate on the drum ( (S3-14) to (S3-15) or (S3-25) to (S3-26) in FIG. Then, a message prompting the user to confirm the state of the printing drum 20 is displayed on the operation panel 80, and the result of the user confirming the presence or absence of the plate on the drum is selected from the operation panel 80. Predetermined plate making and printing process control is performed based on the stored last use status information, the last use status information of the IC tag 71, and the information selected by the user. As a result, when the printing drum 20 is replaced and used for a certain period of time, the printing drum 20 is replaced with another drum by comparing the information in the storage device 64 and the information in the IC tag 71. It is possible to detect the change, and further, a message that prompts the user to check the state of the plate of the print drum 20 is issued, and by selecting the presence or absence of the plate, normal and good even when the print drum 20 is changed. Printing can be performed.

More specifically, it is determined in step (S3-10) that there is no usage history for a predetermined period or more based on the final usage history information read from the IC tag 71, and the final usage stored in the storage device 64. It is determined that the printing drum 20 has been used in a state where there is a plate on the basis of the status information (S3-12) to (S3-13), and the printing drum 20 is determined based on the final usage status information read from the IC tag 71. When it is determined that the use has been completed in a state where there is a plate (S3-14) to (S3-15), when the user selects from the operation panel 80 that there is a plate on the drum (S3-16) to (S3-17), the plate discharging operation is always performed when the plate making and printing operations are performed (S3-18), and the plate making and printing operations are executed after the plate discharging operation is performed (S3-24). Then, after executing the plate making and printing operation, the printing is finished (S3-24) → (S3-1).
Even when the printing drum 20 is changed by the above control, even when the printing drum 20 is used, the plate is wound around the printing drum 20 at the time of final printing and has not been used for a certain period of time. The plate detection means 26 erroneously detects the presence or absence of the plate due to the loosening and bleeding, and it is reliably prevented that the plate is not ejected even though the plate is present, resulting in an apparatus failure or an abnormal image. And good printing can be performed.

Next, in the determination in step (S3-10), it is determined that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and printing is performed based on the final usage status information stored in the storage device 64. It is determined that the use has been completed with the plate on the drum (S3-12) to (S3-13), and the printing drum 20 has the plate on the basis of the last use state information read from the IC tag 71. When it is determined that the use has been completed (S3-14) to (S3-15), when the user's selection from the operation panel 80 selects that there is no plate on the drum (S3-16) (S3-17), the plate making operation is not performed when performing the plate making and printing operations (S3-19), and the plate making and printing operations are executed (S3-24). Then, after executing the plate making and printing operation, the printing is finished (S3-24) → (S3-1).
By the above control, even when the printing drum 20 is changed and the last use status information of the IC tag 71 is stored in error, priority is given to the selection of the presence or absence of the plate by the user. When the printing drum 20 is not wound around the printing drum 20 and has not been used for a certain period of time after that, the ink is loosened and blotted, so that the plate detecting means 26 erroneously detects the presence or absence of the plate. In other words, it is possible to reliably prevent the occurrence of a plate jam by performing a plate ejection operation without a plate, and good printing can be performed.

Next, in the determination in step (S3-10), it is determined that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and printing is performed based on the final usage status information stored in the storage device 64. It is determined that the use has been completed in a state in which the drum 20 has a plate (S3-12) to (S3-13), and the state in which the printing drum 20 has no plate based on the state information of the last use read from the IC tag 71 (S3-14) to (S3-15), when the user's selection from the operation panel 80 selects that there is a plate on the drum (S3-14). 20) to (S3-21), the plate discharging operation is always performed when the plate making and printing operations are performed (S3-22), and the plate making and printing operations are executed after the plate discharging operation is performed (S3-24). Then, after executing the plate making and printing operation, the printing is finished (S3-24) → (S3-1).
By the above control, even when the printing drum 20 is changed and the last use status information of the IC tag 71 is stored in error, priority is given to the selection of the presence or absence of the plate by the user. When the printing drum 20 is wound around the printing drum 20 and has not been used for a certain period of time after that, the ink is loosened and blotted, so that the plate detecting means 26 erroneously detects the presence or absence of the plate. In other words, it is possible to reliably prevent the occurrence of an apparatus failure or an abnormal image without performing the plate removal operation even though there is a plate, and good printing can be performed.

Next, in the determination in step (S3-10), it is determined that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and printing is performed based on the final usage status information stored in the storage device 64. It is determined that the use has been completed in a state in which the drum 20 has a plate (S3-12) to (S3-13), and the state in which the printing drum 20 has no plate based on the state information of the last use read from the IC tag 71 If it is determined in step S3-14 to S3-15 that the user has selected that there is no plate on the drum (S3-20) ) To (S3-21), the plate making / printing operation is not performed (S3-23), and the plate making / printing operation is executed (S3-24). Then, after executing the plate making and printing operation, the printing is finished (S3-24) → (S3-1).
With the above control, even when the printing drum 20 is changed, “the printing drum 20 is not wound on the printing drum 20 at the time of final printing, and then the ink is used when the printing drum 20 is not used for a certain period of time. The plate detecting means 26 erroneously detects the presence or absence of the plate due to the loosening and bleeding, so that it is possible to reliably prevent the plate from being ejected by performing the plate discharging operation without the plate. Printing can be performed.

Next, in the determination in step (S3-10), it is determined that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and printing is performed based on the final usage status information stored in the storage device 64. It is determined that the use has been completed in a state where there is no plate on the drum 20 (S3-12) to (S3-13), and a state in which there is a plate on the printing drum 20 based on the last use state information read from the IC tag 71 If it is determined in step S3-25 to step S3-26 that the user has selected from the operation panel 80 that there is a plate on the drum (S3-27). ) To (S3-28), the plate discharging operation is always performed when the plate making and printing operations are performed (S3-29), and the plate making and printing operations are executed after the plate discharging operation is performed (S3-35). Then, after executing the plate making and printing operation, the printing is terminated (S3-35) → (S3-1).
Even when the printing drum 20 is changed by the above control, even when the printing drum 20 is used, the plate is wound around the printing drum 20 at the time of final printing and has not been used for a certain period of time. The plate detection means 26 erroneously detects the presence or absence of the plate due to the loosening and bleeding, and it is reliably prevented that the plate is not ejected even though the plate is present, resulting in an apparatus failure or an abnormal image. And good printing can be performed.

Next, in the determination in step (S3-10), it is determined that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and printing is performed based on the final usage status information stored in the storage device 64. It is determined that the use has been completed in a state where there is no plate on the drum 20 (S3-12) to (S3-13), and a state in which there is a plate on the printing drum 20 based on the last use state information read from the IC tag 71 (S3-25) to (S3-26), when the user selects from the operation panel 80 that there is no plate on the drum (S3-27). ) To (S3-28), the plate making operation is not performed when performing the plate making and printing operations (S3-30), and the plate making and printing operations are executed (S3-35). Then, after executing the plate making and printing operation, the printing is terminated (S3-35) → (S3-1).
By the above control, even when the printing drum 20 is changed and the last use status information of the IC tag 71 is stored in error, priority is given to the selection of the presence or absence of the plate by the user. When the printing drum 20 is not wound around the printing drum 20 and has not been used for a certain period of time after that, the ink is loosened and blotted, so that the plate detecting means 26 erroneously detects the presence or absence of the plate. In other words, it is possible to reliably prevent the occurrence of a plate jam by performing a plate ejection operation without a plate, and good printing can be performed.

Next, in the determination in step (S3-10), it is determined that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and printing is performed based on the final usage status information stored in the storage device 64. It is determined that the drum 20 has been used without a plate (S3-12) to (S3-13), and the printing drum 20 has no plate according to the last use state information read from the IC tag 71. If it is determined in step S3-25 to step S3-26 that the user has selected from the operation panel 80 that there is a plate on the drum (S3-31). ) To (S3-32), the plate discharging operation is always performed when the plate making and printing operations are performed (S3-33), and the plate making and printing operations are executed after the plate discharging operation is performed (S3-35). Then, after executing the plate making and printing operation, the printing is terminated (S3-35) → (S3-1).
By the above control, even when the printing drum 20 is changed and the last use status information of the IC tag 71 is stored in error, priority is given to the selection of the presence or absence of the plate by the user. When the printing drum 20 is wound around the printing drum 20 and has not been used for a certain period of time after that, the ink is loosened and blotted, so that the plate detecting means 26 erroneously detects the presence or absence of the plate. In other words, it is possible to reliably prevent the occurrence of an apparatus failure or an abnormal image without performing the plate removal operation even though there is a plate, and good printing can be performed.

Next, in the determination in step (S3-10), it is determined that there is no usage history for a certain period or more based on the final usage history information read from the IC tag 71, and printing is performed based on the final usage status information stored in the storage device 64. It is determined that the use has been completed without a plate on the drum (S3-12) to (S3-13), and the plate is not used on the printing drum according to the last use state information read from the IC tag 71. Is determined to have been completed (S3-25) to (S3-26), when the user's selection from the operation panel 80 selects that there is no plate on the drum (S3-31) to (S3-32) When the plate making and printing operations are performed, the plate making operation is not performed (S3-34), and the plate making and printing operations are executed (S3-35). Then, after executing the plate making and printing operation, the printing is terminated (S3-35) → (S3-1).
With the above control, even when the printing drum 20 is changed, “the printing drum 20 is not wound on the printing drum 20 at the time of final printing, and then the ink is used when the printing drum 20 is not used for a certain period of time. The plate detecting means 26 erroneously detects the presence or absence of the plate due to the loosening and bleeding, so that it is possible to reliably prevent the plate from being ejected by performing the plate discharging operation without the plate. Printing can be performed.

1 is a schematic configuration diagram of a stencil printing apparatus showing an embodiment of the present invention. It is a block diagram which shows an example of the control system used for the stencil printing apparatus shown in FIG. It is a figure which shows an example of the operation panel of the stencil printing apparatus shown in FIG. It is a flowchart which shows an example of the printing control processing operation performed by the control part of a stencil printing apparatus. It is a flowchart which shows another example of the printing control processing operation performed by the control part of a stencil printing apparatus. 6 is a flowchart showing a continuation of the print control processing operation of FIG. 5. It is a flowchart which shows another example of the printing control processing operation performed by the control part of a stencil printing apparatus. FIG. 8 is a flowchart showing a continuation of the print control processing operation of FIG. 7. FIG. FIG. 9 is a flowchart showing a continuation of the print control processing operation of FIG. 8. FIG.

Explanation of symbols

1: Stencil printing machine body 2: Image reading unit 9: Plate making unit 11: Plate (master)
20: Drum device printing drum (printing section)
26: Plate detection means 30: Paper feed unit 31: Impression cylinder (pressing means)
33: Printing paper 38: Plate discharge unit 50: Paper discharge unit 60: Control unit 64: Storage device 70: Writing device 71: Storage member (IC tag)
80: Operation panel

Claims (22)

A stencil that prints an image corresponding to the plate-making image of the plate by supplying ink from inside the drum to the plate-made plate wound around the outer peripheral surface of the printing drum of the drum device, and pressing the paper against the plate In a printing control method of a printing apparatus,
Either the drum device or the ink storage member attached to the drum device is provided with a storage member, and further provided with writing means capable of writing and reading various information to the storage member. At the end, the last use history information and the last use status information of the drum device are updated and stored as needed. At the start of printing, the last use history information and the last use status information stored in the storage member are stored. A printing control method characterized by determining whether or not there is a usage history within a predetermined period based on the read and read last usage history information, and controlling plate ejection, plate making and printing operations based on the determination result . The printing control method according to claim 1,
It is determined that there is no usage history for a predetermined period or more based on the last usage history information read from the storage member, and it is determined that the use is finished in a state where the printing drum has a plate based on the final usage status information of the storage member. When the printing is performed, the printing control method is characterized in that the discharging operation is always performed when performing the plate making and printing operations. The printing control method according to claim 1,
It is determined that there is no usage history for a predetermined period or more based on the last usage history information read from the storage member, and it is determined that the use has been completed in a state where there is no plate on the printing drum, based on the final usage status information of the storage member. When the printing is performed, the plate discharging operation is not performed when the plate making and printing operations are performed. The printing control method according to claim 1,
When it is determined from the last usage history information read from the storage member that there is no usage history for a certain period of time, a message is displayed on the operation panel asking the user to confirm the state of the printing drum. The user selects a result of confirming the presence or absence of a plate on the drum, and performs predetermined plate making and printing process control based on the state information of the last use of the storage member and the information selected by the user. A printing control method characterized by the above. The printing control method according to claim 4,
It is determined that there is no usage history for a predetermined period or more based on the last usage history information read from the storage member, and it is determined that the use is finished in a state where the printing drum has a plate based on the final usage status information of the storage member. In this case, if the user's selection from the operation panel selects that there is a plate on the drum, the plate discharging operation is always performed when the plate making and printing operations are performed. The printing control method according to claim 4,
It is determined that there is no usage history for a predetermined period or more based on the last usage history information read from the storage member, and it is determined that the use is finished in a state where the printing drum has a plate based on the final usage status information of the storage member. In this case, if the user's selection from the operation panel selects that there is no plate on the drum, the plate discharging operation is not performed when the plate making and printing operations are performed. The printing control method according to claim 4,
It is determined that there is no usage history for a predetermined period or more based on the last usage history information read from the storage member, and it is determined that the use has been completed in a state where there is no plate on the printing drum, based on the final usage status information of the storage member. In this case, if the user's selection from the operation panel selects that there is a plate on the drum, the plate discharging operation is always performed when the plate making and printing operations are performed. The printing control method according to claim 4,
It is determined that there is no usage history for a predetermined period or more based on the last usage history information read from the storage member, and it is determined that the use has been completed in a state where there is no plate on the printing drum, based on the final usage status information of the storage member. In this case, if the user's selection from the operation panel selects that there is no plate on the drum, the plate discharging operation is not performed when the plate making and printing operations are performed. The printing control method according to claim 4,
A storage device is provided in the printing apparatus main body, and the storage device stores final use history information and final use status information of the drum device as needed at the end of printing, and stores the storage device at the start of printing. The last use history information and the last use status information stored in the storage member are compared with the last use history information and the last use status information read from the storage member, and the last read from the storage member. When it is determined that there is no usage history for a certain period or more based on the usage history information, a message is displayed on the operation panel asking the user to confirm the state of the printing drum, and the user can view the plate on the drum from the operation panel. The result of confirming the presence / absence is selected, the last used state information stored in the storage device, the last used state information of the storage member, and the user selects Print control method and performing predetermined prepress, printing process controlled by the information. The printing control method according to claim 9,
It is determined that there is no use history for a predetermined period or more based on the last use history information read from the storage member, and the use is terminated in a state where the printing drum has a plate according to the last use state information stored in the storage device. When it is determined that the use has been completed in a state where the printing drum has a plate based on the last use state information read from the storage member, the user's selection from the operation panel is performed. A printing control method, characterized in that when a plate is selected on a drum, a plate discharging operation is always performed when plate making and printing operations are performed. The printing control method according to claim 9,
It is determined that there is no use history for a predetermined period or more based on the last use history information read from the storage member, and the use is terminated in a state where the printing drum has a plate according to the last use state information stored in the storage device. When it is determined that the use has been completed in a state where the printing drum has a plate based on the last use state information read from the storage member, the user's selection from the operation panel is performed. A printing control method characterized in that, when it is selected that there is no plate on the drum, the plate discharging operation is not performed when performing plate making and printing operations. The printing control method according to claim 9,
It is determined that there is no use history for a predetermined period or more based on the last use history information read from the storage member, and the use is terminated in a state where the printing drum has a plate according to the last use state information stored in the storage device. When it is determined that the use has been completed in a state where there is no plate on the printing drum according to the last use state information read from the storage member, the user's selection from the operation panel is A printing control method, characterized in that when a plate is selected on a drum, a plate discharging operation is always performed when plate making and printing operations are performed. The printing control method according to claim 9,
It is determined that there is no use history for a predetermined period or more based on the last use history information read from the storage member, and the use is terminated in a state where the printing drum has a plate according to the last use state information stored in the storage device. When it is determined that the use has been completed in a state where there is no plate on the printing drum according to the last use state information read from the storage member, the user's selection from the operation panel is A printing control method characterized in that, when it is selected that there is no plate on the drum, the plate discharging operation is not performed when performing plate making and printing operations. The printing control method according to claim 9,
Based on the last use history information read from the storage member, it is determined that there is no use history for a certain period or more, and the use is terminated in a state where there is no plate on the printing drum based on the last use state information stored in the storage device. When it is determined that the use has been completed in a state where the printing drum has a plate based on the last use state information read from the storage member, the user's selection from the operation panel is performed. A printing control method, characterized in that when a plate is selected on a drum, a plate discharging operation is always performed when plate making and printing operations are performed. The printing control method according to claim 9,
Based on the last use history information read from the storage member, it is determined that there is no use history for a certain period or more, and the use is terminated in a state where there is no plate on the printing drum based on the last use state information stored in the storage device. When it is determined that the use has been completed in a state where the printing drum has a plate based on the last use state information read from the storage member, the user's selection from the operation panel is performed. A printing control method characterized in that, when it is selected that there is no plate on the drum, the plate discharging operation is not performed when performing plate making and printing operations. The printing control method according to claim 9,
Based on the last use history information read from the storage member, it is determined that there is no use history for a certain period or more, and the use is terminated in a state where there is no plate on the printing drum based on the last use state information stored in the storage device. When it is determined that the use has been completed in a state where there is no plate on the printing drum according to the last use state information read from the storage member, the user's selection from the operation panel is A printing control method, characterized in that when a plate is selected on a drum, a plate discharging operation is always performed when plate making and printing operations are performed. The printing control method according to claim 9,
Based on the last use history information read from the storage member, it is determined that there is no use history for a certain period or more, and the use is terminated in a state where there is no plate on the printing drum based on the last use state information stored in the storage device. When it is determined that the use has been completed in a state where there is no plate on the printing drum according to the last use state information read from the storage member, the user's selection from the operation panel is A printing control method characterized in that, when it is selected that there is no plate on the drum, the plate discharging operation is not performed when performing plate making and printing operations. A printing unit having a drum device having a printing drum, a plate making unit for making a plate in accordance with image information and feeding the plate to the printing drum, a plate discharging unit for discharging a used plate from the printing drum, and the printing A paper feed unit that feeds paper to the unit, a paper discharge unit that discharges printed paper, a control unit that controls these units, and an operation panel for displaying various types of information and making various settings, Ink is supplied from the inside of the drum to the plate-made plate wound around the outer peripheral surface of the printing drum of the drum device, and an image corresponding to the plate-making image of the plate is printed by pressing the paper against the plate. In stencil printing equipment,
Either the drum device or an ink storage member attached to the drum device includes a storage member, and includes a writing unit capable of writing and reading various information to and from the storage member, and the control unit includes: 18. A stencil printing apparatus, wherein the printing control method according to any one of 1 to 17 is used to control plate discharge, plate making, and printing operation. The stencil printing apparatus according to claim 18,
A stencil printing apparatus comprising: a tag having an IC chip as the storage member; and a writing device for an IC chip as the writing means. The stencil printing apparatus according to claim 18 or 19,
The control unit of the printing apparatus main body is provided with a storage device, and the storage device stores the last use history information of the drum device and the last use status information as needed when printing is finished. Stencil printing device. The stencil printing apparatus according to claim 18 or 19,
Plate detecting means for detecting the presence or absence of a plate on the printing drum is provided, and the control unit detects the presence or absence of a plate on the printing drum by the plate detecting means at the end of printing, and the detection information is a final use state. A stencil printing apparatus, wherein the information is written in the storage member as one piece of information. The stencil printing apparatus according to claim 20,
Plate detecting means for detecting the presence or absence of a plate on the printing drum is provided, and the control unit detects the presence or absence of a plate on the printing drum by the plate detecting means at the end of printing, and the detection information is a final use state. As one of the information, the stencil printing apparatus is written in the storage member and stored in the storage device.

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