JP2002144689A - Stencil printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable dealing with a diversification from a viewpoint of a user's use by enabling changing of platemaking conditions different according to a type of a master without requiring for a familiarization, a skill and a labor hour when the type of the master is changed. SOLUTION: A control means 150A selects a corresponding feeding speed from relation data of the type of the master and the feeding speed of a platen motor 26 to obtain a suitable rotational speed (conveying speed of the master) of the platen roller corresponding thereto previously obtained in an experimental manner based on identification information by a master type identifying means 152, and sets the speed as the platemaking condition. The identifying means 152, for example, has a liquid crystal display unit provided on a control panel of a stencil printer body to display the type of the master, and a set key for selecting the type of the master displayed on the display unit and setting the type of the master.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil printing machine for making a stencil master having a heat-sensitive stencil, winding the stencil around an outer peripheral surface of a printing drum (plate cylinder), and performing printing.

[0002]

2. Description of the Related Art A heat-sensitive stencil master (hereinafter, also simply referred to as "master") used in a stencil printing machine of this type is one side of a thin thermoplastic resin film (hereinafter, also simply referred to as "film") having a thickness of about 1 to 8 [mu] m. And a laminate structure in which Japanese paper or synthetic fiber as a porous support, or a mixture thereof is bonded. In a digital thermosensitive stencil printing machine, a master film surface is melt-punched by a heating means such as a thermal head based on digitalized image data of a document image to form a plate, and then this is wound around an outer peripheral surface of a printing drum. The printing paper is supplied with ink from the inside of the printing drum, and the printing paper is pressed against the printing drum by a pressing member such as a press roller, and the ink oozing from the master perforated portion through the printing drum opening portion is transferred to the printing paper. Is printed.

When the heat-sensitive stencil master is fed during plate making, when the heating means is a thermal head, the heat-sensitive stencil master is sandwiched between a heat generating surface of the thermal head and a platen roller provided opposite to the thermal head. The rotation is performed by rotating a platen roller. Generally, a thermal head is pressed against a platen roller by a pressing mechanism, and this is the so-called platen pressure of the heat-sensitive stencil master against the heating surface of the thermal head.

[0004] Thermosensitive stencil masters include differences in the thickness of the thermoplastic resin film and the material of the porous support, or the types of stick preventives and antistatics applied to the perforated surface side of the thermoplastic resin film. Alternatively, there are a plurality of types depending on the degree and the like. The stencil printing apparatus (strictly, a stencil printing apparatus in the stencil printing apparatus) and the heat-sensitive stencil master have one type and one type of correspondence.

[0005]

When different types of heat-sensitive stencil masters are used in one model (plate making apparatus),
It is known that a difference occurs in the transport distance, which affects image dimensional reproducibility. This is because the type of the heat-sensitive stencil master causes slippage between the film surface of the master and the surface of the thermal head, and a difference in frictional force between the porous support of the master and the platen roller. In addition, the load at the time of perforation due to the speed of plate making and the density of the image to be made also affect the image size reproducibility. Further, the reproducibility of the image dimensions also differs depending on the size of the front tension and the back tension of the master. When these balances are lost in the transport distance of the master, a difference occurs due to the effects of slippage, frictional force, and load. The influences on the difference in the slip include the difference in the surface properties of the thermal head (the kind of the protective film material, the smoothness, etc.) and the difference in the porous support bonded to the master. Also, the prescription type and amount of overcoat agent applied on the surface of the film (an anti-stick agent that increases the slip of the film from the surface of the thermal head and an anti-static agent that suppresses the charge generated when the master is transported), And the thickness of the film and the like.

[0006] The factors that affect the difference in frictional force include:
Difference of platen roller (material, surface unevenness, rubber hardness, etc.)
And the difference between the porous support bonded to the master. The material of the porous support, its density, if the porous support contains an overcoating agent, the type and amount of application of the overcoating agent, and the overcoating agent applied to the film surface wound the master into a roll. At this time, the transfer amount of the overcoat agent transferred from the film surface to the support surface also has a considerable influence. The load increases when the image density in one line is high, and decreases when the image density is low.
Also, the load increases when the plate making speed is high, and decreases when the plate making speed is low. The load is proportional to the magnitude of the front tension and the back tension. Further, when the master is transported by the same plate making apparatus, the thickness of the master and the amount of crushing (particularly the porous support) when pressure is applied to the master also affect the transport distance.

[0007] Environmental conditions in which plate making is performed also affect the transfer distance of the master. For example, if the temperature increases, the diameter of the platen roller increases due to thermal expansion, and the peripheral speed changes. In particular, when the porous support is hygroscopic, the change in humidity changes the frictional force between the platen roller and the porous support, which affects the transport distance.

In plate making, the master film must be melted by the heat generated by the thermal head and must be perforated without fail. One of the factors affecting the perforation state is the film surface and the thermal head. Has a close contact with the heating resistor. The state of perforation varies depending on the quality of the adhesion, and there are cases where the perforation is not perforated. Factors on the device side that affect the adhesion include variations in the amount of heat generated in the heating resistor of the thermal head, the intensity of the platen pressure, and the unevenness of the platen roller. These factors affect each other and affect the perforation state.However, a good perforation state cannot be obtained unless a high platen pressure is applied due to the type of master, and a good perforation state even when the platen pressure is low. When the condition is obtained by the same plate making device and the same platen pressure is used, the platen pressure must be set according to the former, and when using the latter master, the platen pressure is considerably excessive. Will be multiplied. When the latter master is used, a high platen pressure means that mechanical stress applied to the thermal head is applied more than necessary, which is preferable from the viewpoint of durability (abrasion resistance, etc.) of the thermal head. Not a setting.

In addition, the adhesive amount required for bonding the film and the porous support must be applied more than at the time of the original optimal platen pressure (low pressure). The film and the porous support are peeled off during the frictional conveyance between the rollers. In order to prevent this, it is necessary to apply a large amount of adhesive, which not only wastes material due to excessive application of the adhesive, but also adversely affects the above-described perforated state as a side effect.

Although the factors affecting the perforated state have been described above, when the type of master is different, the perforated state is the same as when the perforated state is different if the energy applied to the thermal head is the same. It may not be the optimal drilling condition. In order to reduce the set-off phenomenon peculiar to the heat-sensitive stencil printing machine, there is a trade-off with the print density of the printed matter.
The perforated state of the film is preferably small. On the other hand, in the case of a porous support having low ink permeability, the amount of ink transferred to the printing paper is small and the printing density is low unless the perforated state of the film is made large.

As described above, plate making conditions vary depending on the type of master. Therefore, if the user wants to select and use the type of master based on, for example, the print image quality or the price of the master itself, the user must use the plate making apparatus. Various conditions must be changed according to the type of master, and skill is required, which is very troublesome. For this reason, in reality, it is difficult to perform a change setting operation even if the user wants to change the type of master, and the present situation is that the master corresponding to the conditions set at the time of delivery is unavoidably used.

Accordingly, the present invention provides a stencil printing apparatus which can easily and automatically set changes in plate making conditions corresponding to the type of master even if the type of master is changed, and which can sufficiently respond to diversification from the viewpoint of user use. Provision is its purpose.

[0013]

According to a first aspect of the present invention, there is provided a stencil printing machine for making a stencil by a heating means while transporting the stencil master. And a master type correspondence adjusting means for selecting and setting a corresponding one of plate making conditions obtained in advance through experiments and the like based on setting information by the master type setting means. Is adopted.

According to a second aspect of the present invention, in the stencil printing apparatus according to the first aspect, the master type correspondence adjusting means adjusts the transport speed of the thermosensitive stencil master based on the setting information by the master type setting means. To do.

According to a third aspect of the present invention, in the stencil printing apparatus of the first aspect, the heating means is a thermal head, and a platen roller is provided to convey the heat-sensitive stencil master opposite the thermal head. The master type correspondence adjusting means adjusts the rotation speed of the platen roller based on the setting information by the master type setting means.

According to a fourth aspect of the present invention, in the stencil printing apparatus of the first aspect, the heating means is a thermal head, and a platen roller is provided to convey the heat-sensitive stencil master opposite the thermal head. The master type corresponding adjusting means adjusts the plate making speed based on the setting information by the master type setting means.

According to a fifth aspect of the present invention, in the stencil printing apparatus of the first aspect, the heating means is a thermal head, and a platen roller is provided to convey the heat-sensitive stencil master opposite the thermal head. A platen pressure for pressing the heat-sensitive stencil master against the thermal head can be adjusted, and the master type corresponding adjusting means adjusts the platen pressure based on setting information from the master type setting means. I am taking it.

According to a sixth aspect of the present invention, in the stencil printing apparatus according to the first aspect, the heating means is a thermal head, and a platen roller for transporting the heat-sensitive stencil master is provided opposite to the thermal head. A transport roller pair capable of adjusting the front tension of the heat-sensitive stencil master is provided downstream of the platen roller in the master transport direction, and the master type corresponding adjusting means is configured to adjust the front tension based on the setting information by the master type setting means. The tension is adjusted.

According to a seventh aspect of the present invention, in the stencil printing machine of the first aspect, the heating means is a thermal head, and a platen roller for conveying the heat-sensitive stencil master is provided opposite the thermal head. A transport roller pair capable of adjusting the back tension of the heat-sensitive stencil master is provided upstream of the platen roller in the master transport direction, and the master type corresponding adjusting means performs the backing based on the setting information by the master type setting means. The tension is adjusted.

According to an eighth aspect of the present invention, in the stencil printing machine according to the first aspect, the heating means is a thermal head, and the master type correspondence adjusting means is configured to perform the master type setting based on the setting information by the master type setting means. In this configuration, the energy applied to the thermal head is adjusted.

According to the ninth aspect of the present invention, in a stencil printing apparatus for making a stencil by a heating means while transporting the stencil master, a master type setting means for setting the type of the stencil master and detecting an environmental condition. A master type having an environmental state detecting means, and selecting and setting a corresponding one from plate making conditions obtained in advance through experiments or the like based on setting information by the master type setting means and detection information of the environmental state detecting means. .Has environmental condition adjustment means;
The configuration is adopted.

According to a tenth aspect of the present invention, in the stencil printing apparatus according to the ninth aspect, the master type / environmental state correspondence adjusting means is based on the setting information by the master type setting means and the detection information of the environmental state detecting means. The transfer speed of the heat-sensitive stencil master is adjusted.

According to an eleventh aspect of the present invention, in the stencil printing apparatus of the ninth aspect, the heating means is a thermal head, and a platen roller is provided to convey the heat-sensitive stencil master opposite the thermal head. The master type / environmental state correspondence adjusting means adjusts the rotation speed of the platen roller based on the setting information by the master type setting means and the detection information of the environmental state detecting means.

According to a twelfth aspect of the present invention, in the stencil printing machine of the ninth aspect, the heating means is a thermal head, and a platen roller for transporting the heat-sensitive stencil master is provided opposite the thermal head. The master type / environmental state correspondence adjusting means adjusts the plate making speed based on the setting information by the master type setting means and the detection information of the environmental state detecting means.

According to a thirteenth aspect of the present invention, in the stencil printing apparatus according to the ninth aspect, the heating means is a thermal head, and a platen roller for conveying the heat-sensitive stencil master is provided opposite the thermal head. A platen pressure for pressing the heat-sensitive stencil master against the thermal head can be adjusted, and the master type / environmental state correspondence adjusting means can be adjusted based on the setting information by the master type setting means and the detection information of the environmental state detecting means. To adjust the platen pressure.

According to a twentieth aspect of the present invention, in the stencil printing machine of the ninth aspect, the heating means is a thermal head, and a platen roller for conveying the heat-sensitive stencil master is provided opposite the thermal head. A transport roller pair capable of adjusting the front tension of the heat-sensitive stencil master is provided downstream of the platen roller in the master transport direction, and the master type / environmental state correspondence adjusting means comprises setting information and environment information by the master type setting means. The front tension is adjusted based on the detection information of the state detection means.

According to a twentieth aspect of the present invention, in the stencil printing apparatus of the ninth aspect, the heating means is a thermal head, and a platen roller is provided to convey the heat-sensitive stencil master opposite the thermal head. A transfer roller pair capable of adjusting the back tension of the heat-sensitive stencil master is provided upstream of the platen roller in the master transfer direction, and the master type / environmental state correspondence adjustment means includes setting information and environment information by the master type setting means. Adjusting the back tension based on the detection information of the state detection means,
The configuration is adopted.

According to a twentieth aspect of the present invention, in the stencil printing machine according to the ninth aspect, the heating means is a thermal head, and the master type / environmental state correspondence adjusting means is provided.
The energy applied to the thermal head is adjusted based on the setting information by the master type setting means and the detection information by the environmental state detecting means.

According to a seventeenth aspect of the present invention, in the stencil printing machine according to the first aspect, the heating means is a thermal head, and has a thermal head temperature detecting means for detecting a temperature of the thermal head. The correspondence adjusting means adjusts the energy applied to the thermal head based on the setting information by the master type setting means and the detection information of the thermal head temperature detecting means. According to an eighteenth aspect of the present invention, in the stencil printing apparatus according to any one of the first to seventeenth aspects, the master type setting means is provided on an operation panel of the apparatus main body and displays a type of the master. And a setting key for selecting and setting the type of master displayed on the liquid crystal display unit.

According to a twentieth aspect of the present invention, in the stencil printing apparatus according to any one of the first to seventeenth aspects, the master type setting means is an external device connected to the apparatus main body. ing.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, an overall configuration of a thermosensitive stencil printing apparatus (stencil printing apparatus) according to the present embodiment and an outline of a printing process thereof will be described with reference to FIG. Reference numeral 50 indicates an apparatus main body cabinet. Equipment main body cabinet 50
The portion indicated by reference numeral 80 at the top of the plate constitutes a document reading section, the portion indicated by reference numeral 90 below the plate reading device, and the portion indicated by reference numeral 100 on the left side thereof is a porous printing drum 101.
, A portion indicated by reference numeral 70 on the left side thereof is a plate discharging unit, a portion indicated by reference numeral 110 below the plate making device 90 is a sheet feeding unit, and a portion indicated by reference numeral 120 below the printing drum 101 is printing pressure. The lower left part 130 of the main unit cabinet 50 indicates a paper discharge unit.

Next, the operation of the thermosensitive stencil printing apparatus will be described below, including its detailed configuration. First, a document table (not shown) arranged above the document reading unit 80
A document 60 having an image to be printed is placed thereon, and a plate making start key (not shown) is pressed. With the pressing of the plate making start key, a plate discharging process is first executed. In this state, the used heat-sensitive stencil master 6 used in the previous printing is placed on the outer peripheral surface of the printing drum 101 of the printing drum unit 100.
1b remains attached.

First, the printing drum 101 is rotated in the counterclockwise direction, and the rear end of the used heat-sensitive stencil master 61b on the outer peripheral surface of the printing drum 101 is used as a pair of plate-release rollers 71a, 71.
b, the pair of rollers 71a and 71b is rotated and scoops up the rear end of the used heat-sensitive stencil master 61b with one of the plate discharging and separating rollers 71b.
a, 71b, a plate discharging roller pair 73a, 73 disposed to the left of
b is discharged into the plate discharge box 74 while being conveyed in the arrow Y1 direction by the plate discharge conveyance belt pairs 72a, 72b stretched between the plate discharge separation roller pairs 71a, 71b, and the used heat-sensitive stencil master 61b is printed. The plate 101 is peeled off from the outer peripheral surface, and the plate discharging process is completed. At this time, the printing drum 101 continues to rotate in the counterclockwise direction. The used heat-sensitive stencil master 61b which has been peeled and discharged is thereafter compressed inside the plate discharge box 74 by the compression plate 75.

In parallel with the plate discharging process, the original reading section 80 reads the original. A document 60 placed on a document table (not shown) is separated by a separation roller 81 and a previous document conveying roller pair 8.
Each of the rotations of the pair 2a and 82b and the pair of the rear document conveying rollers 83a and 83b is used for exposure reading while being conveyed in the directions from the arrow Y2 to the arrow Y3. At this time, when there are many originals 60, only the lowermost original is conveyed by the action of the separation blade 84. Note that the rear document transport roller 83
a is rotated by a motor 83A for the original transport roller, and the previous original transport roller 82a is
a and 82b are driven to rotate via a timing belt (not shown) stretched between rollers 82b and 83b.
Are respectively driven and rotated. The image reading of the manuscript 60
While being conveyed over the contact glass 85, the reflected light from the surface of the document 60 illuminated by the fluorescent lamp 86 is reflected by the mirror 87, passes through the lens 88, and is incident on the image sensor 89 composed of a CCD (photoelectric conversion element) or the like. This is done by: The reading of the document 60 is performed by a known “reduced document reading method”, and the document 60 from which the image has been read is discharged onto the document tray 80A. Image sensor 8
The electrical signal photoelectrically converted in 9 is input to an analog / digital (A / D) converter (not shown) in the apparatus main body cabinet 50 and is converted into a digital image signal.

On the other hand, in parallel with this image reading operation,
A plate making and plate feeding process is performed based on the digitalized image information. The heat-sensitive stencil master 61 set at a predetermined portion of the plate making apparatus 90 is pulled out from a roll state wound in a roll shape, and the thermal head 3 serving as a heating unit is heated.
By the rotation of the platen roller 92 pressing the heat-sensitive stencil master 61 to zero and the pair of conveying rollers 93a and 93b, the sheet is intermittently conveyed to the downstream side of the conveying path. The platen roller 92 is driven to rotate by the platen motor 26. With respect to the heat-sensitive stencil master 61 conveyed in this manner, a large number of minute heat-generating units arranged in a line in the main scanning direction of the thermal head 30 generate digital image signals sent from the A / D converter. And the thermoplastic resin film of the heat-sensitive stencil master 61 that is in contact with the heat-generating portion is melt-perforated. As described above, the image information is written as a perforation pattern by the position-selective fusion perforation of the thermosensitive stencil master 61 according to the image information.

The leading end of the prepressed thermosensitive stencil master 61a on which the image information is written is sent out toward the outer peripheral side of the printing drum 101 by the pair of plate feeding rollers 94a and 94b, and is advanced downward by a guide member (not shown). And the print drum 101 in the state of the plate feeding position shown in FIG. 1 hangs down toward the expanded master clamper 102 (shown by a virtual line). At this time, the used heat-sensitive stencil master 61b has already been removed from the printing drum 101 by the plate discharging process.

When the leading end of the prepressed thermosensitive stencil master 61a is clamped at a predetermined timing by the master clamper 102, the printing drum 101 rotates in the direction A (clockwise) in FIG. The heat-sensitive stencil master 61a is gradually wound. The rear end of the perforated heat-sensitive stencil master 61a is moved to the cutter 95 after the perforation is completed.
Is cut to a certain length.

When the one-plate-made thermosensitive stencil master 61a is wound around the outer peripheral surface of the printing drum 101, the stencil making and plate feeding processes are completed, and the printing process is started. First, the paper feed table 51
The uppermost one of the printing papers 62 stacked on the upper side is moved toward the registration roller pair 113a, 113b by the feed roller 111 and the separation roller pair 112a, 112b by an arrow Y4.
In the direction, and the registration roller pair 113a,
The print data is sent to the printing pressure unit 120 at a predetermined timing synchronized with the rotation of the print drum 101 by the print 113b. The sent printing paper 62 is printed by the printing drum 101 and the press roller 10.
3, the press roller 103, which has been separated from the outer peripheral surface of the printing drum 101, is moved upward, so that the plate-made heat-sensitive stencil master 61a wound on the outer peripheral surface of the printing drum 101 is moved upward. Is pressed. Thus, the perforated portion of the printing drum 101 and the perforated heat-sensitive stencil master 61
Ink oozes out from the perforation pattern portion (a) (not shown), and the ooze out ink is transferred to the surface of the printing paper 62 to form an ink image as a printing image.

At this time, on the inner peripheral side of the print drum 101, an ink roller 105 and a doctor roller 106 are connected through an ink supply pipe 104 also serving as a rotation support shaft of the print drum 101.
Is supplied to the ink reservoir 107 formed between the printing drum 101 and the ink reservoir 107 in the same direction as the rotation direction of the printing drum 101, and
The ink is supplied to the inner peripheral side of the print drum 101 by the ink roller 105 that rotates in synchronization with the rotation speed of the print drum 101 and contacts the inner peripheral surface. The ink is a W / O emulsion ink.

The printing paper 62 on which the print image has been formed in the printing pressure section 120 is peeled off from the printing drum 101 by the paper discharge peeling claw 114, and is sucked by the suction fan 118 while being sucked by the suction / discharge paper inlet roller 115 and suction / discharge. Due to the counterclockwise rotation of the conveyance belt 117 stretched over the paper exit roller 116, the conveyance belt 117 is conveyed toward the paper discharge unit 130 as indicated by an arrow Y5, and is sequentially discharged and stacked on the paper discharge table 52. Thus, the so-called trial printing is completed.

Next, the number of prints is set with a ten-key (not shown), and a print start key (not shown) is pressed. In the same process as the above-mentioned trial printing, each process of feeding, printing and discharging is repeated by the set number of prints. And all the steps of the stencil printing are completed.

As shown in FIG. 2, the printing operation of the thermosensitive stencil printing apparatus according to the present embodiment is controlled by the control means 150A. The control means 150A includes a CPU, a ROM,
This is a microcomputer including a RAM, an I / O interface, and the like, and also functions as a master type correspondence adjusting unit that selects and sets a corresponding one of plate making conditions. The heat-sensitive stencil printing apparatus includes a master type setting unit 152 for manually setting the type of the heat-sensitive stencil master 61.
The master type setting means 152 is provided on an operation panel 195 of the apparatus main body. Control means 150
A controls the rotation of the platen motor 26, which is a pulse motor, via the motor driver 154 based on the setting information from the master type setting means 152.

As shown in FIG. 3, the master type setting means 1
52, a liquid crystal display 196 for displaying the type of master,
There is a setting key 197 for selecting and setting the type of master (eight types of A, B, C, D, E, F, G, H in this embodiment) displayed on the liquid crystal display unit 196. . The liquid crystal display section 196 is also used as a liquid crystal display section of the operation panel 195 (claim 18). A setting key 197 includes a call key 197a for calling up the display of the type of master on the liquid crystal display unit 196, and move keys 197b, 197c, and 197.
d, 197e and a confirmation key 1 for confirming the selected type
97f. The master type setting means 152 may be of a touch panel type. In the present embodiment, the liquid crystal display unit is used, but the display may be performed by a light emitting element such as an LED.

In the ROM (not shown) of the control means 150A, the type of master, which has been experimentally obtained in advance by using a plate making apparatus 90 actually used, and the rotation speed of the suitable platen roller 92 corresponding to this (master Data (plate making conditions) related to the feed speed of the platen motor 26 for obtaining the (transport speed) are stored. The control unit 150A selects the corresponding feed speed of the platen motor 26 from the related data based on the information set by the master type setting unit 152, and sets the selected feed speed as the plate making condition. . The plate making device 90 is set based on the set conditions.
The plate is made. Thus, even if the type of the master changes, there is no difference in the transport distance of the master. Therefore, uniform image size reproducibility can be obtained even if the types of masters are different.

Next, another embodiment will be described with reference to FIG. Note that the same parts as those in the above-described embodiment are denoted by the same reference numerals, and the description of the already-described configuration and function will be omitted and only the main part will be described unless otherwise required (the same applies to other embodiments described below). The present embodiment is characterized in that the plate making speed (the cycle of writing one line in the sub-scanning direction) is changed according to the type of master (claim 4). When using a master with low perforation sensitivity (for example, the same film type and a large thickness), the energy applied to the thermal head must be increased, and a value (maximum value) that can be set as the energizing pulse width When is determined, the applied voltage must be increased. In such a case, as a side effect, the life of the thermal head is shortened. It may be carried out with the energization pulse width overlapping,
As a side effect, the heat storage effect is newly increased, and it is not suitable for high-speed plate making. That is, it is not desirable as a perforated state, and the perforated state becomes large in diameter, a set-off phenomenon peculiar to a printing machine, printing durability, image size reproducibility, and the like are deteriorated.

When the master is perforated, the contraction stress of the thermoplastic resin acts in the direction of increasing the diameter of the perforated portion, but when the plate making speed is slow (the writing period is long), the contraction stress is caused by the pressing force of the platen roller. The stress is restrained, and the diameter of the perforation is smaller than that at the standard plate making speed due to the reduction in the heat storage effect of the thermal head. On the other hand, when the plate making speed is high (the writing cycle is short), the speed at which the perforated portion is released from the pressing force of the platen roller is high, so that the contraction stress acts sufficiently and the thermal storage effect of the thermal head. The diameter of the perforation increases as the diameter increases.

In a ROM (not shown) of the control means 150B, the type of master, which has been experimentally obtained in advance by using a plate making apparatus 90 actually used, and related data (to obtain a suitable plate making speed corresponding thereto). Plate making conditions) are stored. For example, when the master has a low perforation sensitivity, the data when the plate making speed is reduced (for example, 3.0 m).
s / line), when the perforation sensitivity is standard, the data when the plate making speed is standard (for example, 1.5
ms / line), and so on. The control unit 150B selects a corresponding plate making speed from the related data based on the information set by the master type setting unit 152, and sets it as plate making conditions. Thermal head writing (plate making) in the plate making device 90 is performed based on the set conditions. Thus, even if the type of the master (perforation sensitivity) changes, uniform image size reproducibility can be obtained without increasing the heat storage effect and without shortening the life of the thermal head 30.

Next, another embodiment will be described with reference to FIGS. In the present embodiment, as shown in FIG. 5, the platen pressure is adjusted based on the information set by the master type setting means 152 (claim 5). That is, the platen pressure adjusting mechanism 162 is controlled based on the information set by the master type setting means 152.

As shown in FIG. 6, the platen pressure adjusting mechanism 162 includes a stay 164 having one end to which the thermal head 30 is fixed, and a shaft 166 for rotatably supporting the stay 164 in a vertical direction (arrow direction). A spring 168 locked to the other end of the stay 164, a pin 170 for deflecting the straight portion 168a at the other end of the spring 168,
DC motor 172 for moving the straight portion 168a
And a filler 174 fixed to the straight portion 168a of the spring 168, and a transmission-type optical sensor 176 opposed to the filler 174 with the filler 174 interposed therebetween. When the DC motor 172 rotates, the spring 168 expands and contracts, whereby the close contact pressing force between the heating resistor of the thermal head 30 and the thermoplastic resin film of the master 61, that is, the platen pressure changes. The control unit 150C includes an optical sensor 176
The rotation amount (rotation stop position) of DC motor 172 is determined based on the detection information from.

In the present embodiment, the DC motor 172 stops when the filler 174 reaches the position of each optical sensor 176 and blocks light, so that the platen pressure can be adjusted in two stages. I have. The number of optical sensors 176 may be increased so that the platen pressure can be adjusted in three or more stages. Also, the position information of the optical sensor 176 and a motor (DC or stepping motor, etc.)
The rotation amount may be set at a place other than the optical sensor 176. The pressing force of the heating resistor of the thermal head 30 and the thermoplastic resin film of the master 61 are released by a deformed cam (not shown). The mechanism for adjusting the length of the spring 168 is not limited to the above, and a reflection type sensor may be used as the sensor type. For example, a magnetic type or an optical type for detecting a rotation amount may be used. An encoder using a formula may be used. Further, the pulse motor may be used instead of the DC motor 172 to adjust the number of pulses.

In the ROM (not shown) of the control means 150C, the type of master and the DC motor 172 for obtaining a suitable platen pressure corresponding thereto are experimentally obtained by using a plate making apparatus 90 actually used in advance. The relationship data (plate-making conditions) with the rotation amount (rotation stop position) of the table is stored.
The control unit 150C selects the corresponding rotation amount of the DC motor 172 from the related data based on the information set by the master type setting unit 152, and sets the rotation amount as the plate making condition. Plate making is performed by the plate making apparatus 90 based on the set conditions. As a result, it is possible to prevent the platen pressure from becoming excessive due to the change in the type of the master, and it is possible to suppress unnecessary mechanical stress applied to the thermal head 30.

Next, another embodiment will be described with reference to FIGS. The tensile strength varies depending on the type of the master, and when transported with a high tension exceeding the tensile strength, elongation occurs, and in the worst case, tearing occurs.
Conversely, when the sheet is conveyed at a low tension, the degree of constraint at the time of perforation differs depending on the plate-making pattern, which causes a difference in image dimension reproducibility. The present embodiment is characterized in that such a problem is suppressed (claim 6).

As shown in FIG. 7, a pair of transport rollers 93a, provided downstream of the platen roller 92 in the master transport direction.
A transport motor 188, which is a stepping motor, is connected to the rotating shaft of the roller 93a of the 93b so as to be able to transmit the rotating force. That is, the transport roller pair 93a, 93b
Is rotated independently of the platen roller 92 by the transport motor 188, and the front tension of the master 61 can be adjusted by adjusting the rotation of the transport motor 188. Note that the cutter 95 is omitted in FIG. Also,
As another method, a configuration in which the pressing force of the transport roller pair 93a, 93b is varied using a drive source of the motor 26 for driving the platen roller may be adopted, or a configuration in which the gear ratio can be changed may be adopted. You may adjust the tension.

In the ROM (not shown) of the control means 150D, the type of master, which has been experimentally obtained in advance by using a plate making apparatus 90 actually used, and a transport motor 188 for obtaining a suitable front tension corresponding thereto. The relation data (plate making conditions) with the feed speed is stored. Based on the information set by the master type setting unit 152, the control unit 150D selects the corresponding feed speed of the transport motor 188 from the relevant data and sets the selected feed speed as the prepress condition. Plate making is performed by the plate making apparatus 90 based on the set conditions. The transport motor 188 includes a motor driver 187
, And is rotated at the selected feed speed. This prevents the front tension from becoming excessive or insufficient due to the change in the type of master, and uniform image size reproducibility can be obtained.

The back tension of the master 61 also affects the image size reproducibility. An embodiment corresponding to this will be described with reference to FIGS. 9 and 10 (claim 7). As shown in FIG. 9, transport roller pairs 190a and 190b are provided upstream of the platen roller 92 in the master transport direction, and a transport motor 192, which is a stepping motor, transmits a rotational force to the rotation shaft of the roller 190a. Connected as possible. That is, the transport roller pair 190a,
Reference numeral 190b denotes a platen roller 92 by the transport motor 192.
And the back tension of the master 61 can be adjusted by adjusting the rotation of the transport motor 192. Another method is to use a driving source of a motor 26 for driving a platen roller to use a pair of conveying rollers 190.
a, 190b may be varied, or the gear ratio may be changed, and the back tension may be adjusted.

In the ROM (not shown) of the control means 150E, the type of master, which has been experimentally obtained in advance using the plate making apparatus 90 actually used, and the transport motor 192 for obtaining a suitable back tension corresponding to the master type. The relation data (plate making conditions) with the feed speed is stored. The control unit 150E selects the corresponding feed speed of the transport motor 192 from the related data based on the information set by the master type setting unit 152, and sets it as plate making conditions. Plate making is performed by the plate making apparatus 90 based on the set conditions. The transport motor 192 is driven to rotate at a feed speed selected via a motor driver 194. This prevents the back tension from becoming excessive or insufficient due to the change in the type of master, and uniform image dimensional reproducibility can be obtained. In the above embodiment, the motor 26 for driving the platen roller is provided. However, the transport roller pair 93a, 93b at the front tension is controlled as a drive source for the master transport, and the platen roller is driven at the time of the master transport (to the platen roller). (It does not have a driving source).

Next, another embodiment will be described with reference to FIG. The present embodiment is characterized in that the energy applied to the thermal head 30 is adjusted based on the information set by the master type setting means 152 (claim 8). The control unit 150F includes a master type setting unit 15
The thermal head 30 based on the information set by the
The energy applied to the thermal head 30 is adjusted by controlling the pulse width or the power supply 180 for energizing the thermal head 30. Although the energization pulse width is controlled here, the voltage on the power supply side may be controlled, or both may be controlled.

When a master having excellent film piercing properties is used, it is possible to reduce the size of the pierced state of the film in a state where there is no piercing defect or the like. This has a considerable effect on the generated sticking and the like, and the image size reproducibility is improved. Regarding the relationship between the perforated state (perforated area) of the film and the sticking (master shrinkage), the larger the perforated state of the film, the worse the sticking level becomes. To solve this, Japanese Patent Laid-Open
Japanese Patent Application Laid-Open No. 115115/1999 and Japanese Patent Application Laid-Open No. H11-115148 propose a technique for adjusting the perforation energy in accordance with the printing ratio. Providing the necessary suitable energy to the master to be used at the same time results in a life extension effect of the thermal head 30 and energy saving of the stencil printing apparatus.

In the ROM (not shown) of the control means 150F, the type of master and a suitable energizing pulse width (heat generation of the thermal head 30) corresponding to the type of master, which are experimentally obtained in advance using a plate making apparatus 90 actually used, are stored. Relationship data (plate making conditions) with the energization pulse width to the resistor is stored.
The setting of the energizing pulse width may be the same as in JP-A-11-115145 and JP-A-11-115148. It is determined in consideration of the ink passing property of the body. The control unit 150F selects the corresponding energizing pulse width from the related data based on the information set by the master type setting unit 152, and sets it as the plate making condition. Plate making is performed by the plate making apparatus 90 based on the set conditions. As a result, a suitable print image quality suitable for the type of the master can be obtained.

Next, another embodiment will be described with reference to FIGS. In the embodiment shown in FIG. 11, the adjustment of the applied energy is mainly performed by changing the energizing pulse width. However, in the present embodiment, the energizing pulse width to the thermal head 30 is also changed. Thirty temperatures are considered. This is because the temperature of the thermal head 30 at that time affects the perforated state. As shown in FIG.
Indicates the information set by the master type setting means 152 and the thermistor 18 as a thermal head temperature detecting means.
The energy applied to the thermal head 30 is adjusted based on the second detection information (claim 17).

In FIG. 13, reference numeral 16 denotes a heating resistor housing portion, 13 denotes an aluminum heat dissipation support plate, and 14 denotes a thermal head substrate. The thermistor 182 is provided on the thermal head substrate 14. It is desirable that the temperature detection portion of the thermal head 30 is located near a surface portion of the heat generating portion, for example, a portion near the center portion of the heat generating portion surrounded by the electrodes. In this case, the temperature is detected on the thermal head substrate 14. The thermistor 182
Is not limited to the position on the thermal head substrate 14, but may be provided inside the aluminum heat dissipation support plate 13.

In the ROM (not shown) of the control means 150G, the type of master and the temperature of the thermal head 30 and the suitable energizing pulse width corresponding thereto, which are experimentally obtained in advance using a plate making apparatus 90 actually used in advance. Is stored (plate making conditions). The control means 150G includes:
Based on the information set by the master type setting means 152 and the detection information of the thermistor 182, a corresponding energizing pulse width is selected from the related data and set as plate making conditions. Plate making is performed by the plate making apparatus 90 based on the set conditions. Since the energy applied to the thermal head 30 is set in consideration of the temperature of the thermal head 30,
Print image quality is improved. Although the description is omitted here, a further optimum print image quality can be obtained by adding well-known heat history control, common drop correction control, and the like. In addition to the temperature of the thermal head 30, the type of ink, the ink temperature, and the like are detected, and the applied energy to the thermal head 30 is set based on these information, so that the applied energy can be further adjusted in accordance with the actual conditions. Thus, the optimum print image quality corresponding to the type of the master can be obtained.

Next, another embodiment will be described with reference to FIG. In the first embodiment, the master type setting unit 15
Although the rotation of the platen motor 26 is controlled based on only the information set in Step 2 to obtain a transport speed corresponding to the type of the master, such unitary control lacks accuracy depending on environmental conditions. There are cases. As described above, for example, when the temperature increases, the diameter of the platen roller 92 increases due to thermal expansion, and the peripheral speed changes. The present embodiment is characterized in that a decrease in control accuracy due to such a change in environmental conditions is suppressed.

A thermistor 184 is provided at an appropriate position of the stencil printing apparatus or the stencil making apparatus 90 as an environmental condition detecting means for detecting the apparatus temperature. Master identification
In the ROM (not shown) of the control means 150H as the environmental state correspondence adjustment means, the type of the master and the apparatus temperature, which were previously obtained experimentally using the plate making apparatus 90 actually used,
A platen motor 26 for obtaining a suitable rotation speed (master transport speed) of the platen roller 92 corresponding thereto.
The relation data (plate making conditions) with the feed speed is stored. The control unit 150H selects a corresponding feed speed of the platen motor 26 from the related data based on the information set by the master type setting unit 152 and the detection information by the thermistor 184, and sets the selected feed speed as plate making conditions. 9, 10, 11).

FIG. 15 shows a case where the plate making speed is similarly adjusted by the control means 150I (claim 12), FIG. 16 shows a case where the platen pressure is similarly adjusted by the control means 150J (claim 13), and FIG. Similarly, control means 150K
When the front tension is adjusted by the
FIG. 18 shows a case where the back tension is adjusted by the control means 150L (claim 15).
Similarly, the thermal head 30 is controlled by the control means 150M.
(Claim 16). As environmental conditions, humidity and the like may be detected in addition to temperature, and related data may be created based on the detected humidity.

In each of the above embodiments, the master type is set by the master type setting means 152 provided on the operation panel 195 of the apparatus main body. However, FIG. 20 (example of adjusting the transfer speed of the master). The personal computer 198 as an external device connected to the thermosensitive stencil printing apparatus may be set as the master type setting means.

In each of the above embodiments, the transfer speed of the master,
Although the control for individually adjusting the platen pressure and the applied energy is performed, it is actually better to perform these controls in a series, and the accuracy is further improved by using data that takes all various data into consideration. The control operation in this case is shown in FIG.
A description will be given based on the flowchart of FIG. First, environmental conditions are detected based on the detection information from the environmental state detecting means such as the thermistor 184 (S1), and the master type is set by the master type setting means 152 (S2). The information of the set master type is transmitted to the control unit 1.
The control unit 150 determines the type of the master (S3). When it is determined that the master is the A master among the plurality of master types, the control means 150 selects the rotation amount of the DC motor 172 corresponding to the A master from the data related to the ROM (S4), and determines the platen pressure. It is set as one of the plate making conditions (S5).

Next, the feed speed of the platen motor 26 corresponding to the A master is selected from the related data (S6), and the platen motor 26 is rotated (S7). Next, the applied energy to the thermal head 30 corresponding to the A master is selected from the related data (S8), and the plate making is started (S8).
9). When the plate making is completed (S10), the platen motor 2
6 is stopped (S11), and a plate feeding operation for winding the master having been made on the outer peripheral surface of the printing drum 101 is started (S1).
2). When the plate feeding operation is completed, the printing operation is executed (S1).
3).

If it is determined in S3 that the type of master is the B master, the control means 150 selects the rotation amount of the DC motor 172 corresponding to the B master from the relevant data in the ROM (S14), and uses the platen pressure to make plate making. It is set as one of the conditions (S15). Next, the feed speed of the platen motor 26 corresponding to the B master is selected from the relation data (S1).
6) The platen motor 26 is rotated (S17). Next, the energy applied to the thermal head 30 corresponding to the B master is selected from the related data (S18), and plate making is started (S19). When the plate making is completed (S20), the platen motor 26 is stopped (S21), and a plate feeding operation of winding the plate-made master on the outer peripheral surface of the printing drum 101 is started (S12). When the plate feeding operation is completed, a printing operation is executed (S13).

[0070]

According to the first aspect of the present invention, a corresponding type is selected from master type setting means and plate making conditions obtained in advance through experiments and the like based on setting information by the master type setting means. After the master type is manually set, suitable plate making conditions corresponding to the master type are automatically set without the need for familiarity or skill. This prevents problems such as non-uniformity of image size reproducibility caused by changing the type of master. Further, even if the type of master is changed, there is almost no trouble associated therewith, so that it is possible to sufficiently respond to diversification from the viewpoint of user use.

According to the second aspect of the present invention, the master type correspondence adjusting means adjusts the transport speed of the heat-sensitive stencil master based on the setting information by the master type setting means. Therefore, it is possible to prevent a difference in the transport distance of the master due to the above, and to obtain uniform image size reproducibility.

According to the third aspect of the present invention, the rotation speed of the platen roller is adjusted based on the setting information by the master type setting means. Can be prevented, and uniform image size reproducibility can be obtained.

According to the fourth aspect of the present invention, since the plate making speed is adjusted based on the setting information by the master type setting means, the influence of the difference in the punching sensitivity due to the change of the type of the master can be prevented. In addition, good image size reproducibility can be obtained while preventing a short life of the thermal head.

According to the fifth aspect of the present invention, since the platen pressure is adjusted based on the setting information by the master type setting means, an excessive platen pressure caused by changing the type of master can be suppressed, and The durability of the head can be improved.

According to the sixth aspect of the present invention, the front tension is adjusted based on the setting information by the master type setting means, so that the influence on the image size reproducibility due to the excessive or insufficient front tension is suppressed. Can be.

According to the seventh aspect of the present invention, since the back tension is adjusted based on the setting information by the master type setting means, the influence on the image size reproducibility due to excessive or insufficient back tension is suppressed. Can be.

According to the eighth aspect of the present invention, since the energy applied to the thermal head is adjusted based on the setting information by the master type setting means, a print image quality suitable for the master used can be obtained. it can.

According to the ninth aspect of the present invention, there is provided a master type setting means for setting the type of the heat-sensitive stencil master, and an environmental state detecting means for detecting an environmental state. The configuration includes a master identification / environmental state correspondence adjustment unit that selects and sets a corresponding one of the plate making conditions obtained in advance through experiments or the like based on the detection information of the environment state detection unit. After manually setting the type of master, suitable plate making conditions corresponding to the type of master and environmental conditions can be automatically set without the need for familiarity or skill, and image size reproduction by changing the type of master Problems such as non-uniformity of properties can be prevented with high precision.

According to the tenth aspect, the transport speed of the thermosensitive stencil master is adjusted based on the setting information by the master type setting means and the detection information of the environmental condition detecting means. A difference in the transport distance of the master due to the change can be prevented with high accuracy.

According to the eleventh aspect of the present invention, since the rotation speed of the platen roller is adjusted based on the setting information by the master type setting means and the detection information by the environmental condition detecting means, the type of the master is changed. It is possible to prevent a difference in the transport distance of the master due to the above with high accuracy.

According to the twelfth aspect of the invention, the plate making speed is adjusted based on the setting information by the master type setting means and the detection information by the environmental state detecting means. The effect due to the difference in sensitivity can be prevented with high accuracy, and good image size reproducibility can be obtained while preventing the life of the thermal head from being shortened.

According to the thirteenth aspect of the present invention, the platen pressure is adjusted on the basis of the setting information by the master type setting means and the detection information of the environmental condition detecting means.
Excessive platen pressure caused by changing the type of master can be suppressed with high precision, and the durability of the thermal head can be improved.

According to the fourteenth aspect, the front tension is adjusted based on the setting information by the master type setting means and the detection information by the environmental condition detecting means. The effect on the performance can be suppressed with high accuracy.

According to the fifteenth aspect of the present invention, the back tension is adjusted based on the setting information by the master type setting means and the detection information by the environmental state detecting means. The effect on the performance can be suppressed with high accuracy.

According to the sixteenth aspect of the present invention, since the energy applied to the thermal head is adjusted based on the setting information by the master type setting means and the detection information by the environmental condition detecting means, the master to be used can be adjusted. The printed image quality can be obtained with high accuracy.

According to the seventeenth aspect of the present invention, there is provided a thermal head temperature detecting means for detecting the temperature of the thermal head, and a thermal head based on the setting information by the master type setting means and the detection information by the thermal head temperature detecting means. Since the configuration is such that the energy applied to the head is adjusted, a print image quality suitable for the master used can be obtained with high accuracy.

According to the eighteenth aspect of the present invention, the master type setting means is provided on the operation panel of the apparatus main body and displays the type of master, and displays the type of master displayed on the liquid crystal display unit. Since the configuration is provided with the setting key for selecting and setting, it is possible to avoid the bulky and complicated device due to the provision of the master type setting means.

According to the nineteenth aspect, since the master type setting means is an external device connected to the main body of the apparatus, the type of the master can be set by a personal computer or the like, so that the usability can be improved. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a stencil printing apparatus according to an embodiment of the present invention.

FIG. 2 is a control block diagram in the embodiment shown in FIG.

FIG. 3 is a plan view showing a master type setting unit in the embodiment shown in FIG. 1;

FIG. 4 is a control block diagram in an embodiment for adjusting a plate making speed.

FIG. 5 is a control block diagram in an embodiment for adjusting a platen pressure.

6 is a schematic front view showing a platen pressure adjusting mechanism in the embodiment shown in FIG.

FIG. 7 is a front view of a main part in an embodiment for adjusting front tension.

FIG. 8 is a control block diagram in the embodiment shown in FIG. 7;

FIG. 9 is a front view of a main part in the embodiment for adjusting the back tension.

FIG. 10 is a control block diagram in the embodiment shown in FIG.

FIG. 11 is a control block diagram in an embodiment for adjusting applied energy.

FIG. 12 is a control block diagram in another embodiment for adjusting applied energy.

FIG. 13 is a rear view showing an arrangement of a thermistor for detecting the temperature of the thermal head in the embodiment shown in FIG.

FIG. 14 is a control block diagram in another embodiment for adjusting the transport speed.

FIG. 15 is a control block diagram in another embodiment for adjusting a plate making speed.

FIG. 16 is a control block diagram in another embodiment for adjusting a platen pressure.

FIG. 17 is a control block diagram in another embodiment for adjusting front tension.

FIG. 18 is a control block diagram in another embodiment for adjusting the back tension.

FIG. 19 is a control block diagram in still another embodiment for adjusting applied energy.

FIG. 20 is a control block diagram in an embodiment in which the type of master is set by an external device.

FIG. 21 is a flowchart showing a control operation for performing a plurality of adjustments in series.

[Explanation of symbols]

61 Heat-sensitive stencil master 30 Thermal head as heating means 152 Master type setting means 150 Master type corresponding adjusting means, control means as master type / environmental state corresponding adjusting means 92 Platen roller 184 Thermistor 182 as environmental state detecting means 182 Thermal head Thermistor as temperature detecting means

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasumitsu Yokoyama 1 in the Tomei Tohoku Ricoh Co., Ltd., located at 3 Shinmei-do, Nakaname Ichiba, Shibata-cho, Shibata-gun, Miyagi (72) Inventor Hajime Kato Shibata-cho, Shibata-gun, Miyagi No. 3 of the name of Shinmei-do, Meiji-do 1. F-term in Tohoku Ricoh Co., Ltd. (Reference) 2H084 AA13 AA38 AE05 AE06 AE07 AE08 AE10 BB04 BB13 CC09

Claims (19)

[Claims] 1. A stencil printing machine for making a stencil by a heating means while transporting a heat-sensitive stencil master, wherein the master type setting means for setting the type of the heat-sensitive stencil master and information set by the master type setting means. A stencil printing machine comprising master type correspondence adjusting means for selecting and setting a corresponding one of plate making conditions obtained in advance through experiments or the like. 2. The stencil printing apparatus according to claim 1, wherein said master type correspondence adjusting means adjusts a transport speed of said heat-sensitive stencil master based on setting information by said master type setting means. Stencil printing machine. 3. The stencil printing apparatus according to claim 1, wherein said heating means is a thermal head, and a platen roller for transporting said heat-sensitive stencil master is provided facing said thermal head, and said master type corresponding adjustment is provided. Means for adjusting the rotation speed of the platen roller based on setting information from the master type setting means. 4. A stencil printing apparatus according to claim 1, wherein said heating means is a thermal head, and a platen roller for transporting said heat-sensitive stencil master is provided facing said thermal head, and said master type corresponding adjustment is provided. Means for adjusting a stencil making speed based on setting information from the master type setting means. 5. The stencil printing apparatus according to claim 1, wherein said heating means is a thermal head, and a platen roller for transporting said heat-sensitive stencil master is provided facing said thermal head. A stencil printing apparatus, wherein a platen pressure for pressing a heat-sensitive stencil master can be adjusted, and the master type corresponding adjusting means adjusts the platen pressure based on setting information by the master type setting means. 6. A stencil printing apparatus according to claim 1, wherein said heating means is a thermal head, and a platen roller for transporting said heat-sensitive stencil master is provided opposite said thermal head. A transport roller pair capable of adjusting the front tension of the heat-sensitive stencil master is provided downstream in the transport direction, and the master type corresponding adjusting means adjusts the front tension based on the setting information by the master type setting means. A stencil printing machine characterized by the following. 7. A stencil printing apparatus according to claim 1, wherein said heating means is a thermal head, and a platen roller for transporting said heat-sensitive stencil master is provided opposite said thermal head. A transport roller pair capable of adjusting the back tension of the heat-sensitive stencil master is provided upstream in the transport direction, and the master type corresponding adjusting means adjusts the back tension based on the setting information by the master type setting means. A stencil printing machine characterized by the following. 8. A stencil printing apparatus according to claim 1, wherein said heating means is a thermal head, and said master type correspondence adjusting means is configured to apply energy to said thermal head based on setting information by said master type setting means. A stencil printing machine characterized by adjusting the following. 9. A stencil printing machine for making a stencil by a heating means while transporting a thermosensitive stencil master, comprising: a master type setting means for setting a type of the heat sensitive stencil master; and an environmental state detecting means for detecting an environmental state. And
There is provided a master type / environment state correspondence adjusting means for selecting and setting a corresponding one from plate making conditions obtained in advance through experiments or the like based on the setting information by the master type setting means and the detection information of the environment state detecting means. A stencil printing apparatus characterized in that the printing is performed. 10. The stencil printing machine according to claim 9, wherein the master type / environmental state correspondence adjusting means is configured to control the heat-sensitive stencil master based on the setting information by the master type setting means and the detection information of the environmental state detecting means. A stencil printing machine characterized by adjusting the conveying speed of the stencil. 11. A stencil printing apparatus according to claim 9, wherein said heating means is a thermal head, and a platen roller for transporting said heat-sensitive stencil master is provided facing said thermal head, and said master type and environment are provided. A stencil printing apparatus, wherein a state correspondence adjusting unit adjusts the rotation speed of the platen roller based on the setting information by the master type setting unit and the detection information of the environmental state detecting unit. 12. The stencil printing apparatus according to claim 9, wherein said heating means is a thermal head, and a platen roller for transporting said heat-sensitive stencil master is provided opposite said thermal head, and said master type / environment is provided. A stencil printing machine characterized in that a state correspondence adjusting means adjusts a stencil making speed based on the setting information by the master type setting means and the detection information of the environmental state detecting means. 13. A stencil printing apparatus according to claim 9, wherein said heating means is a thermal head, and a platen roller for transporting said heat-sensitive stencil master is provided opposite said thermal head. The platen pressure for pressing the heat-sensitive stencil master can be adjusted, and the master type / environmental state correspondence adjusting means adjusts the platen pressure based on the setting information by the master type setting means and the detection information of the environmental state detecting means. A stencil printing apparatus characterized by performing the following. 14. A stencil printing apparatus according to claim 9, wherein said heating means is a thermal head, and a platen roller for transporting said heat-sensitive stencil master is provided opposite said thermal head. A transport roller pair capable of adjusting the front tension of the heat-sensitive stencil master is provided downstream in the transport direction, and the master type / environmental state correspondence adjusting means includes setting information by the master type setting means and detection information of the environmental state detecting means. A stencil printing apparatus, wherein the front tension is adjusted based on the following. 15. The stencil printing apparatus according to claim 9, wherein said heating means is a thermal head, and a platen roller is provided to convey said heat-sensitive stencil master in opposition to said thermal head. A transport roller pair capable of adjusting the back tension of the heat-sensitive stencil master is provided upstream in the transport direction, and the master type / environmental state correspondence adjusting means includes setting information by the master type setting means and detection information of the environmental state detecting means. A stencil printing machine, wherein the back tension is adjusted based on the following. 16. A stencil printing apparatus according to claim 9, wherein said heating means is a thermal head, and said master type / environmental state correspondence adjusting means detects setting information by said master type setting means and an environmental state detecting means. A stencil printing machine wherein the energy applied to the thermal head is adjusted based on the information. 17. A stencil printing apparatus according to claim 1, wherein said heating means is a thermal head, and said thermal printing head has a thermal head temperature detecting means for detecting a temperature of said thermal head. A stencil printing apparatus wherein the energy applied to the thermal head is adjusted based on the setting information by the master type setting means and the detection information of the thermal head temperature detecting means. 18. A stencil printing apparatus according to claim 1, wherein said master type setting means is provided on an operation panel of the apparatus main body and displays a type of master. A stencil printing machine having a setting key for selecting and setting the type of master displayed on a liquid crystal display unit. 19. The stencil printing apparatus according to claim 1, wherein said master type setting means is an external device connected to the apparatus main body.