JP2008279729A - Stencil printing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stencil printing device configured by considering operatability and environment, which has a mechanism, by which applying energy can be optionally adjusted by all users within setting condition having no problem regardless of a kind of a master, and has a proper conveying means corresponding to the kind of the master. <P>SOLUTION: The stencil printing device has a means for discriminating the kind of a master. A standard applying energy suitable for the master is set according to the discriminating result and applying energy level matching to the image quality of the desired printed matter can be selected. The size of the selected range is set in a certain size by investigating in every kind of the mask in advance. Further, the selection is carried out in which the master after completion of printing is wound around the outer peripheral face of a printing drum after storing the same in a master storing means or is wound around the outer peripheral face of the printing drum without passing the master storing means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a thermal stencil printing apparatus.

In a plate making apparatus in a stencil printing apparatus, a master is produced by forming a perforation pattern corresponding to an image signal with a thermal head on a heat-sensitive stencil sheet. In the present invention, for the sake of convenience, the master paper including the base paper before plate making is uniformly referred to as a master. Depending on the magnitude of energy (applied voltage / applied time) applied to the thermal head, the hole size (hole area) and the drilling probability vary, but they may differ depending on the type of master.
According to the identification information of the master identification means for identifying the type of the master, any one of the conveyance speed of the master, the rotation speed of the platen roller, the plate making speed, the front tension, and the back tension is adjusted, and the thermal head is based on the identification information. There is a proposal to adjust the energy applied to (see, for example, Patent Document 1).
There is a proposal for adjusting the energy applied to the thermal head based on the setting information of the master setting means for setting the type of master (see, for example, Patent Document 2).
A mark representing the plate-making characteristics of the heat-sensitive base paper for plate-making is provided on the base paper roll, and depending on the plate-making characteristics read from this mark on the printing machine side, one or both of the magnitude of the voltage applied to the thermal head and the application time are appropriate values (For example, refer to Patent Document 3).

The master surface condition is automatically detected optically, and high voltage short time perforation and low voltage long time perforation are properly used according to the master surface quality. The perforation quality is almost the same regardless of the surface quality of the base paper. There is a proposal to ensure (see, for example, Patent Document 4).
There is a proposal to adjust the thermal head energy by adjusting the power application time corresponding to the predetermined power based on the glossiness of the master measured by the glossmeter (see, for example, Patent Document 5). As described above, Patent Documents 1 to 5 describe a configuration in which energy to be applied to a suitable thermal head is set in accordance with detected or set master information.
The reason why such a configuration is adopted is that the change in energy applied to the thermal head can be set only by a person who is familiar with the issues and characteristics of stencil printing machine settings and has specialized knowledge, There is a situation in which it is difficult for the user himself to change the energy to the thermal head according to the original, the ink color to be used, the printing paper, the application, and the like.
On the other hand, in the case of a stencil printer that can use a plurality of types of masters, the problem is further complicated. A detailed description of this problem will be described later.

  There is a method in which a master made by plate making is wound around a printing drum (plate cylinder) during plate making. In addition, there is a method of temporarily storing in the storage means and then sending out from the storage means after completion of plate making and winding it around the plate cylinder (see, for example, Patent Document 6). The reason for providing the storage means is to suppress the occurrence of wrinkles when winding a plate cylinder while making a plate in the case of a master having low rigidity (low rigidity). However, the storage means is not necessarily required when the master to be used is highly rigid. In Patent Document 6, at least one of document size, paper size, plate-making image density, use environment temperature, and the like is a parameter that affects the sticking of masters around the master storage unit and / or the reduction of the rigidity of the master. On the basis of the information from the control means, the control means for changing the blowing timing of the blowing means is provided. That is, a device for storing the high-rigidity master and the low-level master in the storage unit is also made in the same manner, and it is not selected whether to store or not based on the master information. Therefore, in the conventional configuration, since it was not possible to choose not to store, when the storage is not necessary, it is possible to avoid an increase in power consumption due to the operation of the blower fan and the intake fan that should not be used. There was no problem.

JP 2002-144688 A Japanese Patent Application Laid-Open No. 2002-144689 JP-A-2005-280364 JP 2002-79646 A JP 2003-48297 A JP 2006-116914 A

  In view of the above problems, the present invention provides a mechanism that allows any user regardless of the master type to arbitrarily adjust the applied energy within a condition setting that does not cause a problem, and also provides an appropriate conveying means according to the master type. Thus, an object of the present invention is to provide a stencil printing apparatus that can be considered in operability and the environment.

In the first aspect of the present invention, a thermal stencil master having at least a thermoplastic resin film (hereinafter referred to as a master) is pressed by a platen roller against a thermal head having a large number of heat generating portions arranged in the main scanning direction. In this state, while moving by the master conveying means in the sub-scanning direction orthogonal to the main scanning direction, the applied energy corresponding to the image signal is supplied to the thermal head, and the heating part is heated by the applied energy. The thermoplastic resin film is selectively melt punched to form a punching pattern according to the image signal, the master is wound around the outer peripheral surface of the printing drum, ink is supplied from the inside of the printing drum, In a stencil printing apparatus that prints an ink image corresponding to the image signal on the printing paper with ink that has oozed through a perforation pattern, A master identification unit that can identify the type of the data is provided. A variable range of energy input to the thermal head is set in accordance with the master type identified by the master identification unit, and the applied energy is arbitrarily set within the set variable range. It has the means to adjust, It is characterized by the above-mentioned.
According to a second aspect of the present invention, in the stencil printing apparatus according to the first aspect, the master identification means includes an identification tag reading means mounted on the master, a master identification code input means, and a master type by the user. It has at least one of the selection means.

According to a third aspect of the present invention, in the stencil printing apparatus according to the first or second aspect, pulse width varying means for changing a time (energization pulse width) for supplying electric power to the thermal head in order to adjust the applied energy. The input energy variable range is a variable range of energization pulse width.
According to a fourth aspect of the present invention, in the stencil printing apparatus according to the first or second aspect of the present invention, the stencil printing apparatus further includes a voltage variable unit that changes a voltage supplied to the thermal head in order to adjust the applied energy. The variable range is a variable range of the applied voltage.

According to a fifth aspect of the present invention, in the stencil printing apparatus according to any one of the first to fourth aspects, display means for displaying an input energy variable range under a condition set (selected) by the identification means is provided. It is characterized by having.
According to a sixth aspect of the present invention, in the stencil printing apparatus according to any one of the first to fifth aspects of the present invention, the stencil printing apparatus includes a plate making apparatus having a master storing means capable of storing a master that has been made.

According to a seventh aspect of the present invention, in the stencil printing apparatus according to the sixth aspect of the present invention, after the master-making master is stored in the master storage unit according to the master identification information identified by the master identification unit. It has a selection means for selecting whether to wind around the outer peripheral surface of the printing drum or to wind around the outer peripheral surface of the printing drum without going through the master storage means.
In the invention according to claim 8, a thermal stencil master (hereinafter referred to as master) having at least a thermoplastic resin film is pressed by a platen roller against a thermal head having a large number of heat generating portions arranged in the main scanning direction. In this state, while the master transport unit moves the sub-scanning direction perpendicular to the main scanning direction, the applied energy corresponding to the image signal is supplied to the thermal head, and the applied heat causes the heating unit to generate heat. The thermoplastic resin film is selectively melt punched to form a punching pattern according to the image signal, the master is wound around the outer peripheral surface of the printing drum, ink is supplied from the inside of the printing drum, In a stencil printing apparatus that prints an ink image according to the image signal on printing paper with ink that has oozed through a perforation pattern, A plate making apparatus having a master identifying unit capable of identifying the type of the master and a master storing unit capable of storing the master that has been subjected to the plate making, and the master made by the plate according to the master type identified by the master identifying unit. It has a selection means for selecting whether to wind around the outer peripheral surface of the printing drum after storing in the storage means or to wind around the outer peripheral surface of the printing drum without going through the master storage means. To do.

According to a ninth aspect of the present invention, in the stencil printing apparatus according to any one of the sixth to eighth aspects, when the discriminating means determines that the rigidity is low, the master-made master is stored in the master storing means. When the plate is wound around the printing drum after completion of plate making and it is determined that the rigidity is high, the master storing means does not store the plate making master, but opens and closes the plate making master to the printing drum in parallel with plate making. The means is provided in the master conveyance path.
According to a tenth aspect of the present invention, in the stencil printing apparatus according to the ninth aspect, when the identification means determines that the rigidity is high, and printing of a plurality of originals (when there is a reservation), printing with the immediately preceding original is performed. It is characterized by having a selection means for selecting whether or not to store a new pre-made master in the master storage means during the process.
According to an eleventh aspect of the present invention, in the stencil printing apparatus according to any one of the first to tenth aspects, a plurality of types of masters can be used.

  According to the present invention, since the variable range of applied energy corresponding to each usable master is set, it can be used in any situation where there is no problem due to excessive or insufficient applied energy. Also, a user who is unfamiliar with the operation of the thermal stencil printing apparatus can easily and arbitrarily adjust the applied energy.

First, problems in a stencil printer that can use a plurality of types of masters will be described.
It is well known that energy control is performed according to the master type (set to an optimum energy condition). Conventionally, energy settings of 1 to 2 have been mainstream for one type of master. (Standard mode and other modes)
There is almost no configuration that can freely change the energy applied to the thermal head depending on the master type, and even if it exists, it is for a specific master or, as described above, suitable for the type of master There was only control to set to a proper energy condition (standard energy condition).
For this reason, when a mechanism capable of mounting a plurality of masters is used, the following problems have occurred.

FIG. 13 is a diagram showing the relationship between applied energy and drilling probability for three types of masters.
FIG. 14 is a diagram showing the relationship between the applied energy and the perforated area as in FIG.
In both figures, A, B, and C indicate the master type, and X, Y, and Z indicate the changeable range limit positions of the applied energy, respectively.
Each figure uses master A, master B, and master C with different characteristics, and the perforation probability (print data within a certain range) when the applied energy is changed under the same conditions (environment, thermal head, and plate making apparatus) The ratio of the number of perforated dots to the number) and the transition of the perforated area (melted area of the thermoplastic resin film per dot) are shown.

In the stencil printing machine, the thermoplastic resin film (hereinafter referred to as film) of the heat-sensitive stencil sheet is melted by the heat generated by the heating element provided in the thermal head, and passes through the ink supplied from the printing drum from the perforated part of the resulting film. Since the ink is transferred to the printing paper, the film is not perforated = the image is missing = the image is defective. Therefore, it is considered that the perforation probability allowable as a printed image is at most about 90% (broken line in FIG. 13), although it depends on the resolution of the thermal head mounted on the machine.
Of course, as described above, since the stencil printing machine is configured to allow ink to pass through the perforated portion, the size of the perforation, that is, the perforated area is a factor that greatly affects the printed image.
The proper perforation size is determined by the resolution of the thermal head and the size of the heating resistor, the environment used and the ink used, the printing system, and the characteristics of the master.

Therefore, even if the printing system is the same with the same thermal head and ink, it is necessary to change the energy applied to the thermal head according to the characteristics of the master to be used (perforation characteristics).
Due to the characteristics of the stencil printing machine, if the perforations become too large, the printing durability deteriorates, the occurrence and increase of the set-off due to excessive ink transfer, the adhesion of the melted film to the surface of the thermal head, the normal transport distance This is because an increase in the number of sticks that cannot be fed, and conversely, if the perforations become too small, the ink does not pass through the perforated portions, causing problems such as deterioration of solid filling due to insufficient ink transfer amount.
Therefore, the setting of the energy applied to the thermal head is set to an appropriate value after grasping the matching between each characteristic of the punching probability and the punching area and the printing system.

For the above reasons, conventionally, the switching of the applied energy depending on the master type has been configured to set the standard setting value of each master shown in FIG. 13 for the energy corresponding to each master. All of the states were able to secure a drilling probability of 90%, and there was no problem.
Even if it has a mechanism that can adjust the applied energy, it does not have a mechanism for setting the energy changeable range (variable range) by the master to be used. It was only set.
For this reason, the problems described below may occur in the conventional configuration.

In recent years, masters having a characteristic that can ensure a high drilling probability, such as master C, have also become widespread due to advances in master manufacturing technology.
Comparing the ranges in which a 90% punching probability can be secured between masters, master A is different from “XY”, master B is more than X, and master C is different from “X-Z”.
In a stencil printing press that has a configuration that can change the energy range and that has a set variable energy range (the energy changeable range with respect to the standard setting value) matches that of master A, the variable energy range is designated as master A. If the master B is to be used without being changed as equivalent, the standard setting value is shifted for B, so the variable range is the range of “X′−Y ′”. Therefore, when the applied energy is X ′, the perforation probability is sufficiently satisfactory, but the perforation area becomes too large, causing problems such as increased set-off and deterioration of printing durability as described above. When Y ′ is used, the perforation probability is much lower than 90%, which is a fixed target value, and the perforation area is small, so that a printed image with a small amount of ink transfer and a lot of white spots is obtained.

Therefore, when a master such as B is used in a range where there is no problem, it is necessary to change the energy variable range from “X′−Y ′” to a range “X ″ −Y ″” that is much narrower.
The master C described above is characterized in that the drilling area can be changed greatly without deteriorating the drilling probability. In other words, if you want to increase the image density, if you want to obtain a solid solid image, use higher energy, if you want to reduce ink consumption, if you want a lighter density image, or if you want to emphasize printing durability, etc. Can be said to be a master whose energy can be switched according to the user's own preferences, such as applying lower energy.
However, when the master C is used without changing the variable range when the energy variable range set as described above is matched with the master A, the drilling probability and the drilling area are hardly changed in contrast to the case of the master B. It becomes adjustment in the range, and it becomes meaningless. For this reason, it is desirable to extend the energy variable range from “XY” to the range of [XZ].

Conventional stencil printers have a mode called an ink-saving mode, and many models are equipped with a plate-making mode that suppresses ink consumption without changing resolution by changing applied energy. This time we will describe the ink-saving mode by changing the applied energy. There is also a control to reduce ink consumption by reducing the number of dots to be punched, but this will reduce the resolution, so there is concern about deterioration of image quality, particularly text blurring in character manuscripts, etc. I do not explain.
The ink saving mode is basically set within a range that does not greatly affect the image. Since the control is to reduce the diameter of the perforations, the solid filling and concentration are somewhat reduced, but no major deterioration is observed. In particular, there is almost no effect on a manuscript or the like mainly composed of character images. For this reason, it has been used for the purpose of reducing ink consumption, power consumption during plate making, and improving printing durability.

In many cases, the setting condition of the applied energy in the ink saving mode is set so as to reduce the ink consumption by a percentage of normal.
As described above, since the punching quality such as the punching probability and the punching area differs depending on the characteristics of the master, it is necessary to change the setting condition of the ink saving mode (the amount of applied energy down) between the masters.
For example, in a stencil printing apparatus capable of mounting three types of masters having characteristics such as masters A, B, and C, even if the application conditions adapted to each master are adjusted, for example, target ink consumption When the amount suppression amount is set to -10% of the normal time, even if the target ink consumption suppression amount is obtained by reducing the applied energy by 10% in the master A, although it is an extreme example, the master C When the applied energy down rate is 10%, which is the same as the master A, the ink consumption suppression amount is -5% with respect to the normal time, and in the master B, the applied energy down rate is the same as the master A, 10%. Inhibition of ink consumption is -20% of normal
In particular, in the case of the master B, the applied energy is lowered too much, and it is expected that the print image will be unacceptable due to the large influence on the image quality. .

In addition, although the image quality of the master C is good, it does not become the expected ink consumption suppression amount, so the amount of applied energy must be reduced a little more. In other words, if the target reduction rate of ink consumption is the same, the applied energy down rate for Master A was 10%, which was an acceptable limit, whereas the master C applied energy was reduced if there was no problem with image quality. It is necessary to set the allowable limit of the rate to 20%.
In terms of power consumption, the ink-saving mode in the master C can be changed to an ink-saving mode with a lower power consumption effect than that in the master A mode.
According to the present invention, a plurality of types of masters can be used. Therefore, when it is desired to increase the printing durability and to print a large number of sheets, it is desirable to prioritize the image quality with a master having excellent printing durability. Therefore, it is possible to perform plate-making printing work with a master corresponding to the user application, such as selecting a master with good punchability.

When adjusting the applied energy by changing the energization pulse width (time for applying the applied voltage), a pulse width variable means is prepared, and the master A has standard energy (set for each master in the prior art). It is possible to set in the range of “+ A% to −B%” that has been confirmed in advance with respect to (condition), and when using master B, “+ A ′% to −B ′% with respect to the standard energy in master B It can be set within the range of “”. This configuration can be controlled relatively easily.
By changing the energization pulse width, the applied energy can be adjusted relatively easily.

The control of applied voltage is the same as the control of energization pulse width, and voltage variable means for changing the voltage supplied to the thermal head is prepared, and “+ C% to −D%” for each standard energy. Set. In this method, since the energization pulse width is not changed, the same heat generation time can always be obtained when the applied energy is changed, so that a stable drilling state is easily obtained. Compared to the change of the energization pulse width, there is also a troublesome configuration.
The applied energy can be changed by any ratio when the ratio is varied (for example, it can be 1% or 3%), and numerical values can be input directly or by operating the arrow buttons or ± buttons. Any method may be used as long as the applied energy can be changed, such as a method of selecting an arbitrary numerical value on the operation panel or a level selection of large, medium and small.
Since the applied energy is adjusted by changing the voltage supplied to the thermal head, the same heat generation time can always be obtained when the applied energy is changed, so that a stable perforated state is easily obtained.
Further, instead of the ratio, an actual numerical value (ms for energizing pulse width, V for applied voltage) may be input or selected.

Conventionally, in order to reduce raw material costs, reduce the amount of heat generated by the thermal head, and reduce power consumption, the heat-sensitive film and support have been made thinner, and the number of masters with low rigidity has increased. It was in.
When the master has low rigidity, it is difficult to handle it, and there is a concern that wrinkles and misalignments may occur during plate making or when a pre-made master is wound around a printing drum.
As one of the countermeasures, many methods are used in which the master is not wound around the plate and the printing drum at the same time, but the master that has already been made is stored in the temporary plate making device and wound around the printing drum at once after the plate making is completed. It has been.
With this configuration, when there is a standby document, it is possible to make a standby document while the current document is being printed, and it is possible to obtain a merit that the total work time can be shortened.

FIG. 15 is a diagram for explaining the relationship between fan operation and power consumption in the stencil printing apparatus.
In the figure, a thick solid line indicates a power consumption curve when the fan is operating, and a thin solid line indicates a power consumption curve when the fan is not operating.
This figure shows the transition of power consumption from the start of plate making to the end of plate making when a fan is operated and not operated in a certain stencil printing apparatus.
In a stencil printing apparatus having a mechanism capable of mounting a plurality of masters, it is also known to make a plurality of masters without problems and wind them around a printing drum by adjusting the fan air volume as in Patent Document 6. ing.
However, in these configurations, the operation of the blowing fan and the suction fan is necessary for storing, and as a result, as shown in the figure, the power consumption increases with respect to the stencil printing apparatus having no storing mechanism. It was.

Further, in recent years, a master with high rigidity has been developed by improving the sensitivity of the heat-sensitive film and improving the structure of the support, as opposed to reducing the rigidity.
Therefore, as described above, even in the stencil printing machine, appropriate applied energy corresponding to each master is set, and the air flow of the fan appropriately corresponding to them is used for both purposes.
However, even if the master does not need to be stored with a certain degree of rigidity, it was not a method of switching the transport route, so the fan air volume for storing according to the rigidity must be increased compared to the normal master. It was necessary to increase power consumption.

Therefore, in the present invention, if the master type is identified and there is no problem even if it is not stored according to its characteristics, the master is not stored in the plate making apparatus, and the master is wound around the printing drum in parallel with the plate making. Therefore, a high-rigidity master is configured so that fan blowing and suction operations do not occur during normal operation. Therefore, it is possible to suppress power consumption during fan operation. (Operation is described separately.)
Further, in the present invention, only when the master to be used is identified as having high rigidity, it is possible to select the method of winding the transport path simultaneously with the plate making or the method of storing.
This is to reduce the overall work time by making the next manuscript at the same time during printing (that is, storing the next manuscript unconditionally) even if the power consumption is increased when making a plurality of manuscripts. This is a configuration for responding to user requests.

FIG. 1 is a diagram showing an operation flow of the stencil printing apparatus of the present invention.
In the figure, symbol S indicates a flow step.
FIG. 2 is a block diagram showing an outline of the configuration of the present invention.
When the power is turned on in step S1, a plurality of types of masters can be used in this configuration, so the main body first identifies what master is used by the master identifying means (step S2). At this time, when a master other than the recommended master or an unregistered master is mounted on the main body, the user may be notified of that fact.
The identification method is performed by an identification tag described later, input of a user identification code, or selection on a PC or operation panel. Details will be described later.
Apart from the above identification means, it is also possible to identify by detecting the characteristics of the master. A method of obtaining a substitute characteristic of rigidity by thickness detection using an ultrasonic sensor, a method of optically detecting surface gloss and surface roughness as in known examples, and identifying based on the detection information, etc. Any identification method can be used.

FIG. 3 is a view for explaining an example of the operation panel for a stencil printing apparatus of the present invention.
4 to 6 are diagrams showing display examples related to the master type.
Input buttons as selection means such as “Type A”, “Type B”, and “Type C” are prepared as representative types of master types, and can be selected by the user. If the rigidity of the master to be used is known in advance, it can be selected between high rigidity and low rigidity. When any button is pressed, adjacent LEDs are lit so that the pressed result can be confirmed.

If the master set in the device can be automatically identified, if the identification is successful, the microcomputer lights the identified master LED on the operation panel if there is a corresponding master LED. Otherwise, it is displayed in the form as shown in FIG. 4 on the LCD screen which is the display means of the operation panel. As a result, the user can check which master is installed. By storing the master information in a non-volatile memory or the like, it can also be used when charging for each user.
Therefore, in this case, as long as there is an LED, the selection button as described above should not be necessary. However, if automatic identification cannot be performed due to some reason, the display means as shown in FIG. A message prompting the input of the type is displayed, and the above input means is required. Also, when using a type of master that cannot be represented by the prepared buttons, as shown in FIG. 6, a message that prompts the user to input an identification code is displayed on the LCD display section so that it can be input from the numeric keypad. good.
Regarding such master identification only by code input and user selection, an economic effect can be obtained in which an identification device is not required for the master.

FIG. 7 is a diagram showing an example of displaying a variable range of applied energy.
A standard energy condition corresponding to the master is set, and an applied energy variable range corresponding to the master obtained in advance by experiment is set and displayed on an indicator on an operation panel or an LCD screen as shown in FIG. The display means such as this takes the form of informing the user.
Since it is configured to display the input energy variable range under the conditions set (selected) by the identification means, general users who are unfamiliar with stencil printing presses can use it without worrying about malfunctions. It will be possible to easily determine whether the degree can be changed.

Next, if it is a low-rigidity master based on the stiffness information of the master used obtained by the master identification means, the master is made while being stored in the bending box. If the master is a high-rigidity master, the standby document sent from the ADF or PC is If there is no master, the master is not stored and the winding of the plate and the printing drum is performed in parallel. If there is a waiting document, whether or not the plate is made during printing. If the selection information is not confirmed, if the printing is not performed, the next original is made, and if printing is being performed, the master is made while being stored in the bending box as in the case of making the master with the low rigidity master. In this case, it is desirable to increase the air volume of one or both of the suction fan and the blowing fan as compared with the plate making with the low rigidity master.
Since it is determined that the rigidity is high by the identification means and when making a plurality of originals (when there is a reservation), it is configured to select whether or not to store the masters in the master storage mechanism during printing. However, even if the power consumption increases, it is possible to meet the user's desire to reduce the overall work time by simultaneously making the next original during printing.

Next, a master type identification method will be described.
For example, it is conceivable to use RFID (Radio Frequency Identification) technology as a non-contact type identification method. The RFID uses an automatic recognition technology that performs non-contact writing and reading using wireless communication. In general description of RFID, an IC tag (also called an RF tag, an electronic tag, etc.) on which an IC chip having a memory function and an antenna are basically mounted, and reading of data in the IC tag are read. , A reader / writer for writing, and a system for managing the information. By sticking this tag on a target (here, the target is a heat-sensitive stencil sheet or ink), the tag is used for recording such as automatic identification or calling. Details will be described later.

FIG. 8 is a diagram for explaining an example in which an IC tag is added to a roll-shaped heat-sensitive stencil sheet.
As an example, when diverting heat-sensitive stencil paper (type) and other than heat-sensitive stencil paper (heat-sensitive paper), the roll of heat-sensitive stencil paper is equipped with an IC tag equipped with an IC chip having a memory function and an antenna. There is a method of providing a reading means for reading information from the IC chip through the antenna in a non-contact manner. Note that the IC chip in this case is generally provided in a cylindrical core tube (paper tube) around which a heat-sensitive stencil sheet is wound.
Next, as an example of a contact type identification method, a non-volatile memory that can store data for a certain period of time without supplying power is used, and a contact in the board to which this memory is attached or the outside of the board However, there is a method in which a contact capable of interfacing with a memory is provided, a connector for electrically connecting the main body processing unit is provided, and the electrical signal is recognized by the reading means. As the non-volatile memory, it is possible to use a ROM called an EEPROM that can erase and write data. In addition, when writing is performed once and writing is not performed thereafter, a nonvolatile memory such as EPROM may be used.

FIG. 9 is a schematic configuration diagram for explaining the principle of RFID.
In the figure, symbol RF is an electromagnetic wave having a predetermined frequency.
Here, details of the RFID will be described.
As a basic configuration, since the general description has been given above, the entire description is omitted. However, the inside of the IC tag is composed of an IC chip and a coiled antenna connected to the IC chip. It is divided into a storage unit, a power supply rectification unit, a transmission unit, and a reception unit, and each performs a communication by sharing the function. As a communication principle, the IC tag and the reader / writer antenna communicate with each other by radio waves to exchange data. The communication procedure is that an antenna in an IC tag receives an electromagnetic wave (solid RF) from a reader / writer, and an electromotive force is generated (electromagnetic induction or the like) by a resonance action. Then, the IC chip in the IC tag is activated, and the information in the chip is converted into a signal. The signal is transmitted from the antenna on the IC tag side (dotted RF), and the signal transmitted from the reader / writer antenna is received. Thereafter, the data is transferred to the data processing unit via the controller, and data processing such as recognition is performed on the software side.

Another identification method using the RFID technology will be described.
As shown in FIG. 8, an IC tag having a function different from that described above is attached to the paper tube of the heat-sensitive stencil sheet, as shown in FIG. This IC tag is configured to reflect an electromagnetic wave in response to an electromagnetic wave having a specific frequency, and has a resonance circuit having a resonance frequency with respect to the specific frequency. This is called a heat sensitive stencil resonance tag.
A resonance circuit with a coil and a capacitor is provided inside the resonance tag for heat-sensitive stencil paper, and the resonance frequency varies depending on the type of heat-sensitive stencil paper by changing the number of turns of the coil or the capacitance of the capacitor. Is configured to be configurable. Therefore, by oscillating electromagnetic waves of a plurality of frequencies simultaneously or in time series from the detection device side, the frequency of the reflected electromagnetic waves can be known, and the information carried by the tag can be identified by the reading means.
If these identification methods are used, the master identification can be automatically recognized, and there is an effect that it does not take time and effort.

Here, each block of the stencil printing apparatus will be briefly described.
The microcomputer transmits and receives command signals and data signals between the punching means driving circuit, the master conveying motor driving circuit, the original conveying roller motor driving circuit, the printing pressure variable motor driving circuit, the plate making time setting key, and the memory of the data storing means. The system controls the entire stencil printing apparatus, and includes a CPU, an I / O interface, a ROM, a RAM, and the like, which are connected by a signal bus. In the ROM of the microcomputer, a relational data table for setting various conditions corresponding to the set plate making conditions, a program for energy adjustment, and an optimum size perforation according to the selected various conditions A relation data table of energization pulse widths corresponding to the drilling energy for forming and a relation data table for selecting the optimum pressure contact force are obtained and stored in advance by experiments or the like.

The thermal head driving circuit is mainly composed of an image data signal output from the decoding circuit and a driving circuit that outputs a thermal head driving signal in response to an energization pulse width command output from the microcomputer. The thermal head has a shift register that sequentially shifts the image data signal, a latch circuit that latches the output of each stage of the shift register, an AND circuit that drives only the heating element corresponding to the black pixel, and the heating element. And a backflow preventing diode.
The master transport motor drive circuit is connected to the master transport motor and drives the master transport motor. The document transport roller motor drive circuit has the same configuration as the master transport motor drive circuit, and supplies the output of the phase excitation circuit to the document transport roller motor.

  The heat history control is performed by changing each heat history control value of the heat history control means to a predetermined value. The environmental temperature correction control means has a function of adjusting applied energy according to the temperature of the environment (atmosphere) detected by environmental temperature detection means such as a thermistor (not shown). And relational data between energization pulse widths are stored.

  The operation panel includes a plate making start key for setting / inputting activation of each operation from reading of a document image to plate making, plate feeding, paper feeding, and plate printing, and printing paper to be printed for the master of one plate made A numeric keypad having a function as a print number setting means for setting the number of prints, a print start key for starting a print operation of the number of prints set / input with the numeric keypad, and a print speed as a set value of the print speed, for example A printing speed setting key for selectively setting one printing speed from five printing speeds of 1 to 5 speeds, a counter as a printing number display means for displaying the number of printings set by the ten key, and the like Is arranged. (The configuration of the present invention has already been described separately and will be omitted.)

FIG. 10 is a diagram showing a configuration example of a stencil printing apparatus using the plate-making printing apparatus of the present invention.
In the figure, reference numeral 1 is a stencil printing device, 2 is a plate cylinder, 3 is an ink supply pipe which also serves as a support shaft, 4 is a master clamper, 5 is an ink supply device, 6 is an ink roller, 7 is a doctor roller, 8 is an ink reservoir, 9 is an impression cylinder, 10 is an impression cylinder shaft, 11 is a recess, 12 is a paper clamper, 14 is a printing pressure device, 15 is a plate making device, 16 is a master, 17 is a master support member, 18 is a master end sensor, 19 is A master set roller, 20 is a master set guide plate, 22 is a thermal head, 23 is a platen roller, 24 is a motor, 25 is a platen pressure release mechanism, 26 is a tension roller pair, and 27 and 28 are cutter units. Other symbols will be described as needed in the following description.
Reference numeral 1F denotes a main body frame that forms the framework of the stencil printing apparatus 1. The stencil printing apparatus 1 will be described later with a contact glass 74 disposed above the main body frame 1F for placing a document (not shown) and one or a plurality of documents 73 placed on a document placement table 72. A document reading device 70 provided with an ADF (automatic document feeder) portion 71 and the like that automatically and sequentially transfers to a fixed position of the scanner portion 76, and a master 16 disposed on one side of the main body frame 1F below the document reading device 70. A plate making apparatus 15 for punching and making the master 16 fed out from a master roll 16A wound in a roll shape, and a master 16 that has been made and made by punching and placed in a substantially central portion of the main body frame 1F are wound around the outer peripheral surface. A plate cylinder 2 and a paper holding clamper 12 as a holding means for holding and holding the leading end portion of the printing paper S disposed and fed below the plate cylinder 2 are provided on the plate cylinder 2. A printing pressure device 14 having an impression cylinder 9 that presses the printing paper S against the master 16 that has been subjected to printing, and a printing paper S that is disposed below the plate making device 15 and stacked on the paper feed tray 61 are sent to the printing pressure device 14. A paper feeding device 60, and a paper discharging device 80 that is disposed below the main body frame 1F facing the paper feeding device 60 and that prints the printed printing paper S printed by the printing pressure device 14 to the paper discharging tray 81; A plate discharge device 66 that is disposed between the paper discharge device 80 and the document reading device 70 and peels off the used master 16 from the outer peripheral surface of the plate cylinder 2 and discharges it into the plate discharge box 69. A control device 120 that is arranged between the device 60 and mainly controls the operation of the plate making device 15 is provided.

  Hereinafter, the document reading device 70, the plate making device 15, the printing pressure device 14, the paper feeding device 60, the plate discharging device 66, the paper discharge device 80, and the control device 120 will be described. Therefore, it will be briefly described. The plate making apparatus 15 has a part of the structure of a plate feeding apparatus for feeding the master 16 to the plate cylinder 2 as will be described later, and is also called a plate making plate feeding apparatus. As shown in the figure, the ADF unit 71 in the document reading apparatus 70 includes a document placement table 72 and a document discharge table 75, and is disposed so as to be openable and closable with respect to the contact glass 74. The automatic document feeder of the ADF unit 71 is a well-known device similar to that described in known documents. The scanner unit 76 is a well-known document scanning unit that includes an image sensor 77 that performs photoelectric conversion in response to reflected light imaged from the surface of the document 73 via an imaging lens, a scanner motor (not shown), and the like. Has an optical system. The image sensor 77 inputs the obtained image signal from an analog / digital (hereinafter abbreviated as “A / D”) conversion unit (not shown) in the main body frame 1F to a plate making control unit (not shown). The scanner unit 76 has a known configuration similar to that described in publicly known documents. For example, without using the ADF unit 71, the document 73 is placed on the contact glass 74 and the scanner motor is used. By driving, an image reading operation can be performed.

FIG. 11 is a view for explaining the plate making apparatus of the present invention.
FIG. 12 is a partial perspective view focusing on the master.
A master support member 17 as a master storage means for storing the master 16 so that the master 16 can be fed out from the master roll 16A wound in a roll shape, and a master for placing the tip of the master 16 fed out from the master roll 16A On the downstream side of the master support roller 17 on the master transport path XR and a master set roller 19 as a master transport means for contacting the master set guide plate 20 via the set guide plate 20 and the leading end of the master 16 and transporting the master 16. A thermal head 22 as a plate-making means that is arranged and heat-enhanced the master 16 fed out from the master roll 16A according to an image signal; a platen roller 23 that rotates and conveys the master 16 while pressing the master 16 against the thermal head 22; Contact for moving the head 22 to and away from the platen roller 23 A platen pressure release mechanism 25 as a means, and a pair of upper and lower tension rollers 26 and 26 (hereinafter, abbreviated as “tension roller pair 26”) disposed on the downstream side adjacent to the platen roller 23 in the master transport path XR. The neutralization roller 27 disposed on the downstream side adjacent to the tension roller pair 26 in the master conveyance path XR, and disposed on the downstream side adjacent to the tension roller pair 26 in the master conveyance path XR. A cutter unit 28 as cutting means for cutting the master 16 and a pair of upper and lower reversing rollers 40, 40 (hereinafter referred to as "reversing roller pair 40") disposed downstream of the cutter unit 28 in the master transport path XR. ), And the bending box 3 disposed below the master conveyance path XR between the tension roller pair 26 and the cutter unit 28. As a master storing means 30 provided with a guide transport plate 31 and the like, and a blower means for blowing air to the pre-made master 16 in the vicinity including the opening 32a provided in the vicinity of the opening 32a of the bending box 32 and as a swell prevention means A blowing fan 35 and a plate supply guide plate 42 disposed on the downstream side of the reverse roller pair 40 in the master transport path XR are provided. The guide conveyance plate 31 is also an opening / closing means for opening / closing an opening 32 a of a flexure box 32 that hits the entrance of the master storage means 30.

  At the center of the master roll 16A, there is provided a pipe-shaped core tube 16B that is formed to have the same length as the width of the master 16 and is flush with both end faces of the master roll 16A. A master 16 is wound around the tube 16B. For example, a sheet-like master 16 corresponding to 250 to 300 plates is wound around the master roll 16A, and the master roll 16A is provided so as to supply a plurality of masters 16 and enable the plate making. . As the master 16, for example, a thin film of about 1 to 2 μm made of polyester terephthalate (PET) or the like is used as a base and a laminated structure is formed by adhering Japanese paper fibers with an adhesive, and the film portion is a thermal head. It is heated and perforated by 22 heating elements. The master support member 17 is provided to support both ends of the core tube 16B so as to be detachable and rotatable. The master support member 17 is provided with a braking means (not shown) such as a bule rubber. As a result, the master 16 is given a braking force that does not naturally extend from the master roll 16A mounted on the master support member 17 due to vibration or the like.

The master set roller 19 is connected to a plotter motor 24 serving as a master conveyance driving unit, which will be described later, via a rotation transmission unit (not shown). The rotation transmission means comprises a plurality of gears.
The configurations of the master support member 17, the master set roller 19, and the master set guide plate 20 may be the same as those shown in publicly known documents.

  The thermal head 22 has a plurality of heating elements arranged in the main scanning direction corresponding to the axial direction of the platen roller 23, and is processed by the A / D conversion unit, the plate making control unit, and the like of the document reading apparatus 70. The film portion of the master 16 corresponding to the heating position is heated and melted to perforate by selectively heating the heating element by selective energization control for the heating element based on the digital image signal sent out. It has the function of. The thermal head 22 is provided so as to be able to contact and separate from the platen roller 23 by a platen pressure release mechanism 25.

  The platen pressure release mechanism 25 includes a pressure release motor (not shown) and contact / separation means having a contact / separation detection sensor, etc., but in FIG. 10 and FIG. Omitted. The platen pressure of the thermal head 22 with respect to the platen roller 23 is released (turned off) when the pressure release motor is rotated by a predetermined amount in the direction of occupying the pressure release rotation position. At this time, the contact / separation detection sensor is turned off to generate a separation signal. By turning on a power switch (not shown), the home positions of the pressure release motor and the contact / separation detection sensor are determined, and at these home positions, the platen pressure is released. On the other hand, when the pressure release motor is rotated by a predetermined amount in the direction of occupying the pressing rotation position, the thermal head 22 comes into contact with the platen roller 23 and a predetermined platen pressure is turned on. At this time, the contact / separation detection sensor is turned on so that the separation signal disappears.

  The platen roller 23 is formed integrally with the outer periphery of the roller shaft, and is rotatably supported by a pair of plate making side plates (not shown) fixed on the main body frame 1F side via the roller shaft. The platen roller 23 is connected to a pulley disposed on the roller shaft, a drive pulley provided on the plotter motor 24 side, a timing belt (not shown) spanned between these pulleys and the drive pulley, and the like. It is rotated by the connected plotter motor 24 and has a function as a master conveying means for conveying the master 16 to the master storing means 30 on the downstream side in the master conveying direction X while pressing the master 16 against the thermal head 22. The plotter motor 24 is a stepping motor.

  The tension roller pair 26 has a function / configuration for applying a predetermined front tension (tension) to the master 16 that has been made from the nip portion between the thermal head 22 and the platen roller 23 to the tension roller pair 26. The tension roller pair 26 includes a driving roller on the upper side and a driven roller on the lower side. The upper driving roller is connected to rotation transmission means such as a pulley and an endless belt (both not shown). Are connected to the plotter motor 24. Therefore, the tension roller pair 26 also has a function as the master conveying means. The lower driven roller of the tension roller pair 26 is incorporated in, for example, the platen pressure release mechanism 25 and can be brought into contact with and separated from the upper drive roller in the same manner as the operation of the platen pressure release mechanism 25. .

  The static elimination roller 27 is made of, for example, conductive acrylic + copper sulfide, and is disposed so as to contact the upper surface 212 a of the frame 212 of the cutter unit 28. The static elimination roller 27 allows the static electricity charged on the master 16 to escape from the frame 212 made of a conductive metal. The neutralizing roller 27 is connected to the plotter motor 24 via rotation transmission means such as a pulley and an endless belt (both not shown). Therefore, the static elimination roller 27 also has a function as the master transport unit.

The upper surface 212a of the frame 212 of the cutter unit 28 also serves as a guide plate that conveys and guides the master 16 that has been made. When the cutter unit 28 is not in operation, the cutter unit 28 stands by at one end of the master transport path XR so as not to hinder the transport of the master 16, and this is the home position of the cutter unit 28.
The cutter unit 28 has a movable upper blade and a fixed lower blade, and the movable upper blade moves while rotating in the width direction of the master 16 with respect to the fixed lower blade, or only the movable upper blade. And the like may be configured to move while rotating with respect to the master 16.

The reverse roller pair 40 is configured such that the upper roller is a drive roller and the lower roller is a driven roller. The pair of reversing rollers 40 has a function as a plate feeding unit that feeds the master 16 having been subjected to plate making stored in the master storage unit 30 to the clamper 4 of the plate cylinder 2. A reversing roller 40 as an upper driving roller is a reversing roller as plate feeding driving means that is driven by a pulse input different from that of the plotter motor 24 via rotation transmission means such as a pulley and an endless belt (both not shown). Connected to a stepping motor 41 (hereinafter simply referred to as “stepping motor 41”). The master conveyance speed by the reverse roller pair 40 is set in advance so as to be slightly higher than the master conveyance speed by the platen roller 23.
In the present invention, since the master making means storage means is provided in the plate making apparatus, it can be used without being restricted by the rigidity of the master to be used, and in the case of a plurality of originals, the plate making operation is performed during printing. Total work time can be shortened.

  As shown in FIGS. 10 to 12, the master storage unit 30 includes a three-stage switching deflection box 32, a guide transport plate 31, a transport plate solenoid (not shown), suction fans 34a and 34b, and remaining master detection sensors 36a to 36d. It is mainly composed. The bend box 32 has a function of storing the bend 16C in the master 16 that has already been made. The bending box 32 is integrally formed with two switching plates 32b and 32c for folding the master 16 that has been subjected to plate making into a plurality of stages (three stages in the first embodiment). Three bending ducts 33a, 33b, and 33c as parts are formed. Suction fans 34a and 34b each having a slit and a mesh-like suction port and an exhaust port (both not shown) and incorporating an electric motor are disposed in the deflection duct 33c on the back side of the deflection box 32. Due to the rotation of these suction fans 34a and 34b, an air flow that flows from the left side to the right side in the drawing is generated, so that the master 16 that has been subjected to the plate-making process is gradually bent. In this example, the bending box is switched to three stages, but it may be two stages or less or four stages or more.

  As shown in FIG. 10, the guide transport plate 31 is located directly below the master transport path XR, and moved from the guide transport position as shown in FIG. It can be opened and closed between the position where the deflection is formed. When the guide conveyance plate 31 occupies the bending formation position, the upper side of the bending box 31 is opened, and an opening 32a is formed as an inlet for introducing the master 16 that has been subjected to plate making. The drive mechanism of the guide conveyance plate 31 is driven by a solenoid (not shown). After the master is cut after completion of the plate making operation, the guide transport plate 31 is energized (turned on) and the guide transport plate 31 rises from the deflection forming position and occupies the guide transport position. The leading end of the master 16 is conveyed to the plate feed standby position shown in FIG. 10 (a position slightly protruding from the nip portion of the reverse roller pair 40) without dropping the leading end of the master 16 into the bending box 32 from the opening 32a. To be guided. In addition, after the leading end of the master 16 is nipped by the nip portion of the reverse roller pair 40 and reaches the plate feeding standby position, the guide transport plate 31 is turned off by de-energizing the solenoid. The guide conveyance plate 31 descends due to its own weight and again occupies the deflection forming position.

  The remaining master detection sensors 36a to 36d have a function as master detection means for detecting whether or not the master 16 that has been subjected to plate making remains in the bending ducts 33a, 33b, and 33c of the bending box 32. It consists of an optical sensor. The remaining master detection sensors 36a to 36d are arranged so as to face the folded portion of the master 16 that has been made in the bending ducts 33a, 33b, and 33c of the bending box 32, which is a portion where the residue of the master 16 that has been made is likely to remain. Is installed

  The blowing fan 35 is disposed in order to prevent the swell of the master 16 that has been made on the master side formed near the opening 32a of the flex box 32. The blowing fan 35 is a common fan having the same blowing / suction capability as the suction fans 34a and 34b. The blowing fan 35 is disposed substantially directly above the opening 32a of the bending box 32 with the suction side and the air blowing side of the suction fans 34a and 34b reversed.

  The plate feed guide plate 42 has a function of guiding the master 16 obliquely downwardly to the left in the figure by changing the direction of the tip of the master 16. 10 and 11, reference numeral 18 denotes a master end sensor. The master end sensor 18 detects that the master 16 wound around the master roll 16A has become so small that it needs to be replaced, and is composed of, for example, a reflective optical sensor. Reference numeral 21 denotes a master set sensor. The master set sensor 21 detects that the master 16 is set between the master set roller 19 and the master set guide plate 20, and includes a reflective optical sensor. Reference numeral 29 denotes a master tip detection sensor as master detection means for detecting the tip of the master 16. The master tip detection sensor 29 detects whether or not the master 16 is present in the master transport path XR between the cutter unit 28 and the reverse roller pair 40, and includes a reflective optical sensor.

  As shown in FIG. 10, the printing pressure device 14 is provided in the plate cylinder 2, the pressure cylinder 9, and the plate cylinder 2, and the ink supply device 5 that supplies ink to the master 16 that has been made on the plate cylinder 2. Have The plate cylinder 2 includes a support cylindrical body having a porous structure and a plurality of mesh screens (not shown) wound around the outer peripheral surface thereof, and is supported rotatably around the support shaft 3. The plate cylinder 2 is connected via a drive system including a main motor (not shown) connected via a gear train (not shown) and a belt transmission device so that the rotation speed can be changed corresponding to a plurality of printing speeds. It is rotated. The main motor is a DC motor that is a control motor, and as described later, is configured not to transmit a driving force to the paper feed drive system, and thus is smaller than the conventional main motor. An encoder (not shown) is attached to the output shaft of the main motor. An encoder sensor (not shown) is disposed on the main body frame 1F side in the vicinity of the encoder, and a predetermined pulse generated in cooperation with the rotation operation of the encoder by the rotation drive of the main motor is transmitted by the encoder sensor. By detecting, the rotational speed of the plate cylinder 2 is detected. Thereby, the rotational speed of the plate cylinder 2 is controlled via the main motor.

  In the plate cylinder 2, a clamper 4 that locks the leading end portion of the master 16 is disposed along one generatrix of the outer peripheral portion of the plate cylinder 2. The clamper 4 is pivotally attached to the outer peripheral portion of the plate cylinder 2 with a shaft 4a that can freely rotate by a predetermined angle, and can swing and open / close. The clamper 4 has a rubber magnet, and when the plate cylinder 2 occupies a plate discharging position or a plate feeding position described later, a stage made of a ferromagnetic material provided on the outer peripheral portion of the plate cylinder 2 by an opening / closing device. It is opened and closed with respect to the part. There is a configuration in which the closing force is assisted by an urging means such as a torsion coil spring wound around the shaft 4a when the clamper 4 is closed.

  When the plate cylinder 2 occupies a plate feeding position at which the clamper 4 is positioned on the right side of the plate cylinder 2 at a predetermined position on the main body frame 1F facing one end plate of the plate cylinder 2, the plate supply A plate feeding position detection sensor (not shown) for detecting the position, and when the plate cylinder 2 occupies a home position for positioning the clamper 4 directly below the plate cylinder 2 as shown in FIG. A home position detection sensor (not shown) is provided for this purpose. The plate feeding position detection sensor and the home position detection sensor are transmissive optical sensors. The plate discharge position is a position where the plate cylinder 2 faces the clamper 4 closer to the downstream side of the plate release roller 67 and the plate discharge roller 68 in the rotation direction of the plate cylinder 2. The detecting means for detecting the discharged plate position also uses and utilizes the home position detecting sensor. The discharged plate position is determined when an on signal is output from the home position detecting sensor when the plate cylinder 2 occupies the home position. Is detected by detecting the amount of rotation (rotation angle) of the plate cylinder 2 by the encoder provided attached to the main motor.

  An ink supply device 5 is disposed inside the plate cylinder 2. The ink supply device 5 is arranged in parallel with an ink roller 6 for supplying ink to the inner peripheral surface of the plate cylinder 2 and a small gap with the ink roller 6, and an ink reservoir 8 is provided between the ink roller 6. It comprises a doctor roller 7 to be formed, and an ink supply pipe 3 that also serves as the support shaft 3 and supplies ink to the ink reservoir 8. The ink roller 6 and the doctor roller 7 are connected to the main motor of the drive system through rotation transmission means such as a gear and a belt, and are driven by the main motor. The ink supplied from the ink reservoir 8 to the outer peripheral surface of the ink roller 6 is supplied to the inner peripheral surface of the plate cylinder 2 because a slight gap is provided between the plate cylinder 2 and the outer peripheral surface of the ink roller 6. . Ink is pumped from an ink pack arranged at an appropriate position by an ink pump, and is supplied to the ink reservoir 8 through a supply hole of the ink supply pipe 3.

  The impression cylinder 9 has the same configuration and function as pressing means that rotates at the same peripheral speed as that of the plate cylinder 2 and in a predetermined synchronization with the plate cylinder 2. It is disposed near the lower side of the plate cylinder 2, and has a known function of pressing the leading end portion of the printing paper S fed from the paper feeding device 60 against the outer peripheral surface of the plate cylinder 2 while being held by the paper holding clamper 12. The impression cylinder 9 has an outer peripheral portion having the same diameter as that of the plate cylinder 2, and a concave portion 11 for avoiding interference with a portion of the clamper 4 of the plate cylinder 2 is formed in a part of the outer peripheral portion. The paper gripper 12 is opened and closed by contact with a cam (not shown) provided on the main body frame 1F side.

  The impression cylinder 9 is separated from the outer peripheral surface of the plate cylinder 2 and the cam drive mechanism for swinging the impression cylinder shaft 10 provided at the center of the impression cylinder 9 and selectively pressing it on the outer peripheral surface of the plate cylinder 2. By means of a well-known impression cylinder contacting / separating means (both not shown) provided with holding means comprising a holding arm, a biasing means such as a spring, and a solenoid (both not shown) etc. It is configured to be able to contact and separate with respect to the body 2. As the impression cylinder contacting / separating means, for example, one using an eccentric shaft is also used. A known press roller is also used as the pressing means.

  The sheet feeding device 60 mainly includes a sheet feeding tray 61, a sheet feeding roller 62, a separation roller 63, a separation roller 63a, a guide plate pair 65a and 65b, a registration roller pair 64, and a tray lifting / lowering motor (not shown). Yes. The paper feed tray 61 is loaded with printing paper S and is supported so as to be movable up and down with respect to the main body frame 1F. The paper feeding tray 61 is moved up and down by a tray lifting motor (not shown) in conjunction with the increase and decrease of the printing paper S. .

  The paper feed roller 62 has a well-known function of feeding the print paper P in contact with the uppermost print paper S, and the separation roller 63 and the separation roller 63a are configured to transfer the print paper S fed by the paper feed roller 62 to 1 It has a known function of separating and feeding sheets one by one. The paper feed roller 62, the separation roller 63, and the separation roller 63a constitute a paper feed unit that separates and feeds the printing paper S one by one.

  The paper feed roller 62 and the separation roller 63 are connected to a paper feed motor (not shown) via a rotation transmission means including a pulley and an endless belt (not shown), and are rotated by the paper feed motor. The paper feed motor is a stepping motor. The paper feeding means is driven by a paper feeding means independent driving system that is rotated by the paper feeding motor independent of the rotational driving force of the main motor, instead of the sector gear system that is a driving system of the conventional paper feeding means. Adopted. A one-way clutch (not shown) is interposed between the pulleys and the shafts of the rollers. When the paper feed motor is off, the free state is freely rotatable in the feeding direction of the printing paper S. Thus, when only a registration motor, which will be described later, is on, the paper feed roller 62 and the separation roller 63 are rotated in the feeding direction of the printing paper S.

  A pair of upper and lower registration rollers 64 is disposed on the downstream side of the separation roller 63 in the printing paper conveyance direction. The registration roller pair 64 has made a plate-making process on the rotating plate cylinder 2 by abutting the front end of one sheet of printing paper S separated and fed by the paper feeding means against a portion immediately before the nip portion. While synchronizing with the image writing start position of the master 16, it has a function as a paper transport synchronization means for transporting to the expanded paper holding clamper 12 at a timing. In the registration roller pair 64, the upper roller is a driven roller, the lower roller is a driving roller, and the lower driving roller is a registration motor (not shown) via a rotation transmitting means including a pulley and an endless belt (not shown). And is rotated by the registration motor. The registration motor is a stepping motor.

  The guide plate pairs 65a and 65b are fixed to a paper feed side plate (not shown) fixedly disposed on the main body frame 1F side, and guide the printing paper S to be fed. In the case of using a pressure drum without the paper holding clamper 12 or a known press roller, it is synchronized with the image writing start position (plate making start position) of the master 16 already made on the rotating plate cylinder 2. It is sufficient to convey between the outer peripheral surface of the plate cylinder 2 and the impression cylinder or between the outer peripheral surface of the plate cylinder 2 and the press roller. Note that the rotational driving means of the paper feed roller 62 and the separation roller 63 may be mechanical cam drive means using the rotational driving force of the main motor instead of the paper feed motor. Similarly, as the rotation driving means of the registration roller pair 64, a mechanical cam driving means using the rotation driving force of the main motor is used instead of the registration motor.

  The paper discharge device 80 mainly includes a paper discharge tray 81, a paper discharge claw 82, a suction paper discharge inlet roller 83, a suction paper discharge outlet roller 84, a transport belt 85, a suction fan 86, and a paper discharge drive motor (not shown). It is configured. The paper discharge claw 82 is disposed in the vicinity of the outer peripheral surface of the impression cylinder 9 and peels off and guides the printed printing paper S released from the paper holding clamper 12 by the opening operation of the paper holding clamper 12. The suction paper discharge inlet roller 83 and the suction paper discharge roller 84 are rotatably supported on a paper discharge side plate (not shown) of the paper discharge device 80, and a plurality of rollers 83, 84 are provided on the surface. A conveyor belt 85 having an opening is stretched over. The suction discharge outlet roller 84 is rotationally driven by the discharge drive motor, and this rotational force is transmitted to the suction discharge inlet roller 83 via the conveyor belt 85. A suction fan 86 with a built-in fan motor is disposed between the rollers 83 and 84 and below the paper discharge side plate. The suction fan 86 generates a downward air flow in the drawing by the rotation thereof, and sucks the printed printing paper S on the surface of the conveyor belt 85. In addition to the paper discharge claw 82, the outer periphery of the plate cylinder 2 is used for the purpose of surely preventing the paper roll clamper 12 from winding the paper onto the plate cylinder 2 when the leading end of the printing paper S is discharged. A separation claw (not shown) that is disposed in the vicinity of the surface so as to separate the printed printing paper S from the plate cylinder 2, and between the master 16 on the plate cylinder 2 and the printing paper S. Some are provided with a peeling fan (not shown) that blows off the printing paper S from the plate cylinder 2.

  The plate removal device 66 is mainly composed of a plate release box 69, a plate release peeling roller 67, a plate release roller 68, a plate release motor (not shown), a compression plate (not shown), and a compression plate drive motor (not shown). . The plate release roller 67 is in pressure contact with the plate release roller 68 and is rotated by the plate release motor. The discharged plate peeling roller 67 is freely displaceable between a peeling position that is in pressure contact with the outer peripheral surface of the plate cylinder 2 and a separated position that is separated from the peeling position via a moving means having a swing arm. The moving means is locked and held by locking means (not shown) when the plate release roller 67 is in the separated position. The compression plate is accommodated in the discharge plate box 69 through an elevating mechanism (not shown) so as to be movable up and down, and the compression plate is moved up and down in the discharge plate box 69 by the rotational drive of the compression plate drive motor. It has become.

  A plate making start signal when the plate making start key 91 is pressed serves as a trigger for the subsequent operation flow. The manual operation by the user is until the plate making start key 91 is pressed, and the subsequent operations up to the idling rotation after the printing are automatically performed. Here, ink is supplied by the ink supply device 5 in the plate cylinder 2 to form an appropriate ink reservoir 8, and the lifting motor of the paper supply device 40 is turned on to give a predetermined paper supply pressure / separation pressure. Etc. are set.

  First, the used master 16 of the previous plate is wound around the outer peripheral surface, and the plate cylinder 2 occupying the home position is rotated clockwise as indicated by an arrow in FIG. 10 when the main motor is turned on. The rotation is started, and the main motor is turned off corresponding to the discharging position to stop at the discharging position. Hereinafter, the on / off operation of the main motor is omitted. During the plate removal and plate feeding operations, the plate cylinder 2 rotates and moves away from the outer peripheral surface of the impression cylinder 9. When the plate cylinder 2 stops at the discharging position, the clamper motor is turned on to open the clamper 4 at a predetermined angle, so that the clamper 4 is expanded. The state where the moving means is locked by the locking means is released, and the plate removal roller 67 occupies a peeling position where it comes into contact with the used master 16 on the plate cylinder 2, and at the same time, the plate discharging motor is turned on. As a result, the discharge plate peeling roller 67 is pressed against the outer peripheral surface of the plate cylinder 2 corresponding to the tip portion of the used master 16 that is locked by the clamper 4 while being rotated, so that the tip portion of the used master 16 is pressed. Is removed from the outer peripheral surface of the plate cylinder 2 by the discharge plate peeling roller 67 and peeled off. Immediately after this, the plate removal roller 67 is returned to the original separation position shown in FIG. 10 by the moving means, and is held rotatably together with the plate discharge roller 68. When the clamper motor is turned on to close the clamper 4 immediately after the plate release roller 67 is returned to the separation position, the clamper 4 is closed by the biasing force of the torsion coil spring and the magnetic force of the rubber magnet. Hereinafter, the on / off operation of the clamper motor and the plate discharging motor is omitted. After the clamper 4 is closed, the plate cylinder 2 is rotated in the clockwise direction, so that a substantial plate discharging operation is started. The used master 16 that has been peeled off is conveyed while being peeled from the outer peripheral surface of the plate cylinder 2 by the rotation / conveying operation while being held between the nip portions of the plate peeling roller 67 and the plate discharging roller 68, Will be discarded.

  On the other hand, in the plate making apparatus 15 immediately after the plate making start signal is generated, a platen pressure is applied to the master 16 between the platen roller 23 and the thermal head 22 by turning on and rotating a pressure release motor (not shown). The platen pressure application state is detected to be off by the contact / separation detection sensor described above. In the plate-making standby state, since the platen pressure is released, the platen roller 23 and the thermal head 22 and the upper and lower rollers of the tension roller pair 26 are spaced apart from each other, and are in the master transport path XR. Sag occurs in the master 16 from the master set roller 19 to the reverse roller pair 40. If printing is performed with the master 16 placed on the plate cylinder 2 as it is, winding wrinkles may occur or the plate making start position may not be stable and the plate making start position may shift, so platen pressure is applied. Immediately after this, only the stepping motor 41 is turned on for a predetermined time without driving the plotter motor 24, so that the master 16 is transported for a while and the slack of the master 16 is removed. At this time, between the master set roller 19 and the master set guide plate 20, between the platen roller 23 and the thermal head 22, between the nip portions of the tension roller pair 26, and between the static eliminating roller 27 and the upper surface 212 a of the frame 212. The master 16 is transported downstream in the master transport direction X while sliding between the members while appropriately rotating the rollers. Thereafter, the motor 41 is controlled to be excited until the stepping motor 41 is driven at the time of feeding. Thus, since the stepping motor 41 is excited at a predetermined timing, the reversing roller pair 40 is free to rotate, and it is possible to prevent the master 16 that has been subjected to plate-making start position alignment from being displaced due to vibration or the like.

  Next, in parallel with the movement of the plate cylinder 2 to the plate discharging position and the plate discharging operation described above, the image reading operation and the plate making (writing) operation of the document 73 are started by the document reading device 70 and the plate making device 15. The lowest document 73 of the plurality of documents 73 set on the document table 72 is automatically conveyed to a predetermined position on the contact glass 74, and the image of the document 73 is read by the document scanning optical system. An analog image signal photoelectrically converted by the image sensor 77 is input to the A / D converter. The document 73 from which the image has been read is discharged onto a document discharge table 75. The analog image signal input to the A / D conversion unit is converted into a digital image signal, and the digital image signal is transmitted to the plate making control unit via an image signal processing unit (not shown). The

  On the other hand, in parallel with the image reading operation of the document 73, the plate making operation and the plate discharging operation are automatically performed while the thermal head 22 is controlled by the plate making control unit receiving a digital image signal from an image signal processing unit (not shown). Proceed in parallel. In response to the digital image signal, the heat generating elements of the thermal head 22 are selectively heated, and the film portion of the master 16 that is pressed against the platen roller 23 by the thermal head 22 is selectively heated and melted and punched. On the other hand, the plotter motor 24 is turned on, and the platen roller 23, the tension roller pair 26, and the static elimination roller 27 are rotated in the directions of the arrows in the drawing as shown in FIG. It is transported to the downstream side of the master transport path XR without being attached by static electricity or the like. On the other hand, the stepping motor 41 remains off, and the reversing roller pair 40 remains stopped.

Hereinafter, the case where it is known in advance on the operation panel that the master storage means is used will be described.
At the same time, as shown in FIG. 11, the blowing fan 35 and the suction fans 34a and 34b are both turned on and rotated. As a result, the blowing fan 35 is located in the vicinity of the upper portion of the opening 32a, that is, blown from above, which is the direction in which the master 16 having been made between the left end of the upper surface 212a of the frame 212 and the pair of reversing rollers 40 is bent 16C. In addition, by the suction action of the air flow that is folded back from the top to the left and right in the drawing by the rotation of the suction fans 34a and 34b, the master 16 that has been subjected to plate making is formed to hang down from the opening 32a so that the flexure 16C gradually increases. While being switched and guided by the plates 33a and 33b, they are conveyed in such a manner that they are sequentially folded into the bending ducts 33a, 33b and 33c of the bending box 32. Thus, the master 16 that has been subjected to the plate making is stored in the bending ducts 33a, 33b, and 33c of the bending box 32.

  Although the description is mixed, during the plate making operation, the plate cylinder 2 rotates clockwise and stops at the plate feeding position. During this time, in the plate removal device 66, the plate removal operation by the operation of the plate release roller 67 and the plate discharge roller 68 is continued, and the used master 16 corresponding to the amount of rotation of the plate cylinder 2 is peeled off into the plate release box 69. Discarded and discharged. During this time, the plotter motor 24 is turned on in the plate making apparatus 15, and the plate making operation is continued while forming the flexure 16 </ b> C in the master 16 already made by the master storing means 30.

  On the other hand, during the plate making (writing) operation and the plate cylinder 2 is rotationally moved to the plate feeding position, in the paper feeding device 60, the paper feeding motor is turned on and the paper feeding roller 62 and the separation roller 63 rotate. As a result, by the cooperative action of the separation roller 63 and the separation roller 63a, the topmost printing paper S on the paper feed tray 61 is fed, and the leading edge of the printing paper S is the nip of the registration roller pair 64. It is butted against the part immediately before the club. Thereafter, the paper feed motor is turned off and the rotation of the paper feed roller 62 and the separation roller 63 is stopped, whereby the leading edge of the printing paper S is brought into contact with and held by the nip portion of the registration roller pair 64 and the printing paper. The rear end portion of S abuts and is held by the paper feed roller 62 and the separation roller pair 63.

  As soon as the plate cylinder 2 stops at the plate feeding position, the clamper 4 is expanded for preparation of the plate feeding operation, that is, for plate-making, and the plate cylinder 2 enters the plate feeding standby state. During this plate feeding standby state, the plate discharging operation by the operation of the plate releasing roller 67 and the plate discharging roller 68 in the plate discharging device 66 is temporarily interrupted. At this time, the stepping motor 41 is turned on (started up) at a predetermined timing and the pair of reversing rollers 40 is rotated, so that the leading end of the master 16 that has been subjected to plate making is expanded while being guided by the plate feeding guide plate 42. To the clamper 4. When it is determined that the leading end of the master 16 that has been subjected to plate making has reached the clamper 4 by turning on the predetermined number of steps of the stepping motor 41, the stepping motor 41 is turned off and the operation of the reverse roller pair 40 is stopped simultaneously. The clamper 4 is closed. As a result, the front end of the master 16 that has been subjected to plate making is locked by the clamper 4.

  At the time of printing, pulses supplied to the stepping motor 41 and the plotter motor 24 in accordance with a command from the control device 120 so that the master transport speed v2 by the stepping motor 41 becomes equal to or higher than the master transport speed v1 by the plotter motor 24. By changing the frequency (pps), the stepping motor 41 and the plotter motor 24 are controlled so that the master transport speed v2 ≧ the master transport speed v1.

  As described above, during the plate feeding including the time when the reversing roller pair 40 is rotating after the stepping motor 41 is turned on, in other words, the master 16 which has been made after the stepping motor 41 is turned on is applied to the plate cylinder 2. During the plate feeding operation while moving the nip portion of the reversing roller pair 40 to be wound, the blowing fan 35 blows air from above the pre-made master 16 in the vicinity including the opening 32a.

  Next, a master winding operation for plate feeding is performed. At the same time as the plate cylinder 2 rotates in the clockwise direction, the stepping motor 41 is energized to stop the rotation of the upper roller of the pair of reversing rollers 40, and the pre-made master 16 is wound around the outer peripheral surface of the plate cylinder 2. A load is applied to prevent winding wrinkles. After the stepping motor 41 is excited, the upper roller of the reversing roller pair 40 receives a hold load due to the excitation of the stepping motor 41 to be stopped (locked), and the lower roller of the reversing roller pair 40 is the plate cylinder 2. The master 2 that has been subjected to plate making by the rotation of the plate rotates and is driven and rotated by receiving the conveying force. Due to the rotational force of the plate cylinder 2, the master 16 that has been pre-stored in the bending box 32 is pulled out and wound around the outer peripheral surface of the plate cylinder 2 without generating wrinkles or the like. At this time, the main speed and the plotter motor 24 are controlled by the control device 120 so that the peripheral speed v of the plate cylinder 2 is sufficiently larger than the master transport speed v ′ by the platen roller 23 in the plate making apparatus 15 (v> v ′). The rotation speed is controlled.

  On the other hand, at the same time as the plate feeding operation is performed, the plate discharging device 66 starts the plate discharging operation again, and the used master 16 corresponding to the amount of rotation of the plate cylinder 2 is transferred to the plate releasing roller 67 and the plate discharging roller 68. The plate is peeled and conveyed from the outer peripheral surface of the plate cylinder 2 by the operation, and is discarded and discharged into the discharge plate box 69. On the other hand, when the reading operation in the document reading device 70 and the writing operation in the plate making device 15 proceed, the reading operation is finished, and then the master plate 16 for one plate is made by the number of steps of the plotter motor 24. When the determination is made by the control device 120, the plotter motor 24, the blowing fan 35, and the suction fans 34a and 34b are turned off in response to a command from the control device 120. As a result, the rotation of the master set roller 19, the platen roller 23, the tension roller pair 26, and the charge eliminating roller 27 is stopped, and the plate making (writing) operation is completed.

  On the other hand, in the printing pressure device 14, the paper feeding operation is started in synchronization with the rotational movement operation in which the plate cylinder 2 occupies the home position. When the registration motor is turned on, the printing paper S is fed after a predetermined timing synchronized with the rotation of the plate cylinder 2 by the registration roller pair 64, and the paper holding clamper 12 is synchronized with this timing. After being expanded and holding the printing paper S, the paper holding clamper 12 is closed, and the impression cylinder 9 is rotated while the printing paper S is held on the outer peripheral surface of the impression cylinder 9. The printing paper S is fed into the nip between the two. In accordance with this timing, the outer peripheral surface of the impression cylinder 9 can be brought into contact with and separated from the outer peripheral surface of the plate cylinder 2. After the printing operation, the outer peripheral surface of the impression cylinder 9 is separated from the outer peripheral surface of the plate cylinder 2. The nip portion between the plate cylinder 2 and the impression cylinder 9 is pressurized by an urging force of a tight printing spring (not shown) provided in the impression cylinder contacting / separating means. S is pressed by the master 16 which has been made on the outer periphery of the plate cylinder 2 and has been made. At the time of this pressing, the ink supplied to the inner peripheral surface of the plate cylinder 2 by the ink roller 6 oozes out through the perforated portion of the master plate 16 on which the plate making image is formed, and this oozed ink. Is transferred to the surface of the printing paper S to form a printed image.

  The printed printing paper S on which the print image has been formed is separated from the paper discharge claw 82 when the impression cylinder 9 rotates and the paper holding clamper 12 is opened in front of the paper discharge claw 82, and the suction fan 86. And is discharged onto the conveyor belt 85 positioned below. The printed printing paper S on the transport belt 85 is transported by the rotation of the suction discharge outlet roller 84 while being sucked onto the transport belt 85 by the suction fan 86, and is discharged onto the discharge tray 81 for so-called plate printing. Ends. The printed matter discharged by this plate printing is not counted as a regular printed matter.

  When the printing operation and the paper discharge operation are performed as described above and the plate cylinder 2 occupies the plate supply position, the winding of the master plate 16 for one plate around the plate cylinder 2 is completed and the plate supply operation is completed. Ends. Next, the printed printing paper S is discharged onto the paper discharge tray 81, and the trial printing (plate printing) is completed. Thereafter, the plate cylinder 2 rotates to the home position and stops at the home position.

  After completion of the plate printing, the user appropriately checks the discharged printed matter (printing paper S) to determine whether or not the normal printing operation may be performed, and confirms the image quality and the image position. If appropriate, if the user presses the print start key 92, the same feeding operation and printing as described above are performed to feed and print the first printing paper S during normal printing. Operation and paper discharge operation are performed.

  On the other hand, when the rotation operation of the registration roller pair 64 is stopped and the printing operation is finished, in the plate making apparatus 15, the guide conveyance plate 31 moves from the bending formation position and occupies the guide conveyance position. At the same time, when the plotter motor 24 is turned on, the platen roller 23, the tension roller pair 26, and the charge removing roller 27 are rotated, and the stepping motor 41 is turned on and the reversing roller pair 40 is rotated. The leading end portion of the master 16 of the next plate cut by the above is conveyed to the downstream side of the master conveyance path XR while being guided by the guide conveyance plate 31 and the plate supply guide plate 42. When the predetermined number of steps of the plotter motor 24 and the stepping motor 41 are actuated, it is determined that the leading edge of the master 16 of the next plate has occupied the plate making standby position corresponding to the plate making start position shown in FIG. When both the motor 24 and the stepping motor 41 are turned off, the rotation of the platen roller 23, the tension roller pair 26, the neutralizing roller 27, and the reverse roller pair 40 is stopped, and a standby state is entered. Further, the thermal head 22 is separated from the platen roller 23. Also in the document reader 70, the scanner motor and the like are turned on after being turned on to move to the home position.

Next, the operation when the high-rigidity master is used and master storage is not performed will be described. The difference from the case of storing the master is that the plate removal operation has been completed before the master winding, and that the master is not conveyed into the bending box 32.
If the master identification means knows that the characteristics of the master are highly rigid and the user specifies not to store the master made using the selection means, the master prints the print without going through the master storage means. It is wound around the outer peripheral surface of the drum. In the case of the first plate making with respect to the high-rigidity master, it may be set not to use the master storage means unconditionally. In the case of making a plurality of originals, it is preferable to provide a selection unit for selecting whether or not to store a new master after completion of printing in the master storage unit while printing with the immediately preceding original is being performed. This selection means can be combined with the selection means.
This will be described in detail below.
After pressing the plate-making key, the plate-removing operation is performed in the same manner as when storing the master.
Before the plate making operation, the plate discharging device 66 performs a plate discharging operation by the operation of the plate discharging peeling roller 67 and the plate discharging roller 68 and the like, and the used master 16 corresponding to the rotation amount of the plate cylinder 2 is peeled off. Discarded and released.
After completion of the plate removal operation, the plate cylinder 2 rotates clockwise and stops at the plate feeding position.

  In parallel with the movement of the plate cylinder 2 to the plate discharging position and the plate discharging operation described above, the image reading operation and the plate making (writing) operation of the document 73 are started by the document reading device 70 and the plate making device 15. The lowest document 73 of the plurality of documents 73 set on the document table 72 is automatically conveyed to a predetermined position on the contact glass 74, and the image of the document 73 is read by the document scanning optical system. An analog image signal photoelectrically converted by the image sensor 77 is input to the A / D converter. The document 73 from which the image has been read is discharged onto a document discharge table 75. The analog image signal input to the A / D conversion unit is converted into a digital image signal, and the digital image signal is transmitted to the plate making control unit via an image signal processing unit (not shown). The

On the other hand, in parallel with the image reading operation of the document 73, the plate making operation is automatically performed in parallel while the thermal head 22 is controlled by the plate making control unit receiving a digital image signal from an image signal processing unit (not shown). And proceed. In response to the digital image signal, the heat generating elements of the thermal head 22 are selectively heated, and the film portion of the master 16 that is pressed against the platen roller 23 by the thermal head 22 is selectively heated and melted and punched. On the other hand, the plotter motor 24 is turned on, and the platen roller 23, the tension roller pair 26, and the static elimination roller 27 are rotated in the directions of the arrows in the drawing as shown in FIG. It is transported to the downstream side of the master transport path XR without being attached by static electricity or the like, passes through the upper part of the entrance of the bending box 32 closed by the guide transport plate 31 serving as an opening / closing means, and the stepping motor 41 is turned on to turn the pair of reverse rollers By rotating 40, the master 16 is sent out toward the clamper 4.
The master 16 is clamped, the plate cylinder 2 is intermittently rotated, and the pre-made master is gradually wound.

The plotter motor 24 is turned off by a command from the control device 120. As a result, the rotation of the master set roller 19, the platen roller 23, the tension roller pair 26, and the charge eliminating roller 27 is stopped, and the plate making (writing) operation is completed.
Thereafter, the printing operation is the same as when the master is stored.
As described above, since the master transport method is changed according to the master type identified by the master identifying means, it is possible to adopt a transport method that meets the master specifications and user requirements. Depending on the situation, it is possible to save power.
In addition, if there is no problem even if the master does not need to be stored according to the characteristics of the master, the master is wound around the printing drum in parallel with the plate making. Since fan blowing and suction operations do not occur during normal times, it is possible to suppress power consumption accordingly.

It is a figure which shows the flow of operation | movement of the stencil printing apparatus of this invention. It is a block diagram which shows the outline | summary of a structure of this invention. It is a figure for demonstrating an example of the operation panel for stencil printing apparatuses of this invention. It is a figure which shows the example of a display regarding a master classification. It is a figure which shows the example of a display regarding a master classification. It is a figure which shows the example of a display regarding a master classification. It is a figure which shows the example which displays the variable range of applied energy. It is a figure for demonstrating the example which adds an IC tag to a roll-shaped heat-sensitive stencil sheet. It is a schematic block diagram for demonstrating the principle of RFID. It is a figure which shows the structural example of the stencil printing apparatus using the plate-making printing apparatus of this invention. It is a figure for demonstrating the plate-making apparatus of this invention. It is a fragmentary perspective view which paid its attention to the master. It is a figure which shows the relationship between the applied energy with respect to three types of masters, and a punching probability. It is a figure which shows the relationship between the applied energy similar to FIG. 13, and a piercing | boring area. It is a figure for demonstrating the relationship between the fan operation | movement and power consumption in a stencil printing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stencil printing apparatus 2 Plate cylinder 15 Plate making apparatus 16 Master 22 Thermal head 23 Platen roller 30 Master storage means 32 Deflection box 33 Deflection duct 34 Suction fan 35 Blowing fan 120 Control apparatus

Claims (11)

  In a state where a thermal stencil master (hereinafter referred to as “master”) having at least a thermoplastic resin film is pressed by a platen roller against a thermal head having a large number of heat generating portions arranged in the main scanning direction, The application energy corresponding to the image signal is supplied to the thermal head while being moved in the sub-scanning direction orthogonal to the thermal head, and the heating part is heated by the applied energy to selectively cause the thermoplastic resin film. Ink pierced through the perforation pattern by forming a perforation pattern according to the image signal by melting and perforating, winding this master around the outer peripheral surface of the printing drum, supplying ink from the inside of the printing drum Can identify the type of master in a stencil printing apparatus that prints an ink image corresponding to the image signal on printing paper. Provided with a star identification means, and a means for setting a variable energy input range to the thermal head according to the master type identified by the master identification means and arbitrarily adjusting the applied energy within the set variable range. A stencil printing machine characterized by   2. The stencil printing apparatus according to claim 1, wherein the master identification means is at least one of an identification tag reading means mounted on the master, a master identification code input means, and a master type selection means by a user. A stencil printing apparatus comprising:   3. The stencil printing apparatus according to claim 1, further comprising pulse width varying means for changing a time (energization pulse width) for supplying electric power to the thermal head in order to adjust the applied energy, and varying the input energy. 4. A stencil printing apparatus characterized in that the range is a variable range of the energization pulse width.   3. The stencil printing apparatus according to claim 1, further comprising voltage varying means for changing a voltage supplied to a thermal head in order to adjust the applied energy, wherein the variable range of the input energy is a variable range of the applied voltage. A stencil printing apparatus characterized by being.   5. The stencil printing apparatus according to claim 1, further comprising a display unit that displays a variable input energy range under a condition set (selected) by the identification unit. .   6. The stencil printing apparatus according to claim 1, further comprising a master making unit having a master storage unit capable of storing a master that has been made.   The stencil printing apparatus according to claim 6, wherein a master that has been subjected to plate making is stored in the master storage unit and wound around the outer peripheral surface of the printing drum in accordance with the master identification information identified by the master identification unit. Or a stencil printing apparatus comprising selection means for selecting whether to wind around the outer peripheral surface of the printing drum without going through the master storage means.   In a state where a thermal stencil master (hereinafter referred to as “master”) having at least a thermoplastic resin film is pressed by a platen roller against a thermal head having a large number of heat generating portions arranged in the main scanning direction, The application energy corresponding to the image signal is supplied to the thermal head while being moved in the sub-scanning direction orthogonal to the thermal head, and the heating part is heated by the applied energy to selectively cause the thermoplastic resin film. Ink pierced through the perforation pattern by forming a perforation pattern according to the image signal by melting and perforating, winding this master around the outer peripheral surface of the printing drum, supplying ink from the inside of the printing drum Can identify the type of master in a stencil printing apparatus that prints an ink image corresponding to the image signal on printing paper. A master making device having a master identifying means and a master storing means capable of storing a master that has been made, and storing the master that has been made in the master storing means according to the master type identified by the master identifying means. A stencil printing apparatus comprising: a selecting unit that selects whether to wind the outer peripheral surface of the printing drum or to wind the outer peripheral surface of the printing drum without going through the master storage unit.   9. The stencil printing apparatus according to claim 6, wherein when the identification unit determines that the rigidity is low, the master-storing master is stored in the master storage unit, and after completion of the plate-making, to the printing drum. When the winding is judged to be highly rigid, the master storage means does not store the master-made master, and the master conveying path is provided with opening / closing means for sending the master-made master to the printing drum in parallel with the master-making. A stencil printing machine characterized by   10. The stencil printing apparatus according to claim 9, wherein when the identification means judges that the rigidity is high and when making a plurality of originals (when a reservation is made), the master is being printed while the previous original is being printed. A stencil printing apparatus comprising selection means for selecting whether or not to store a new master-making master in the storage means.   The stencil printing apparatus according to any one of claims 1 to 10, wherein a plurality of types of masters can be used.

Images