JPH06247025A - Stencil plate master setting method - Google Patents

Abstract

PURPOSE:To prevent a stencil plate master from being broken and being led into a transport failure (jamming in transport and winding on a transport roll) when the stencil plate master provided with a very thin substrate or substantially made of only a thermoplastic resin film is set on a plate cylinder. CONSTITUTION:A top of a stencil plate master 21 is payed out of a roll part 21' made of the rolled stencil plate master 21 is fixed to a discharge plate take-up part 25. The roll part 21' is fixed to a position out of a rotating system of a plate cylinder 1. At this time, the roll part 21' is made rotatable about its core. By rotating the plate cylinder 1 by a drive shaft 4, the stencil plate master 21 is wound around a plate cylinder peripheral wall part 8. The plate cylinder 1 is rotated until a master supply part 22 reaches a prescribed position neat the roll part 21', thereafter being brought to a stop. After the stop of the rotation, the fixing of the roll part 21' is released, and the roll part 21' is set on the master supply part 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mounting a stencil master on a plate cylinder of a stencil plate making and printing apparatus in which a plate feeding apparatus for a heat sensitive stencil master and a printing apparatus are integrally incorporated.

[0002]

2. Description of the Related Art FIG. 6 is a diagram schematically showing an outline of a conventional stencil plate-making printing apparatus in which a plate-making section and a printing section are integrated. In the figure, 70 is a stencil master, 71 is a master supply unit that winds and stores the unperforated stencil master 70, 72 is a plate making unit having a platen roller 72a and a thermal head 72b, and 73 is a cut stencil master 70 that has been perforated. A cutter mechanism, a conveying mechanism for the stencil master 70, a printing unit 75, a plate cylinder 76, a peripheral wall portion 76a, a plate discharging unit 77, and printing paper 78. In this apparatus, the stencil master 70 supplied from the master supply unit 71 is heat-perforated by the plate making unit 72, and the heat-perforated stencil master 70 is conveyed by the printing mechanism 7 to the printing unit 7.
After transporting to the plate cylinder 76 of No. 5, the cutter mechanism 7
3 is cut as one stencil master, which is wound around the outer peripheral wall portion 76a of the plate cylinder 76, and stencil printing is performed on the printing paper 78 sent to the printing unit 75. After printing, the used master is the plate discharge unit 7.
Rejected in 7.

However, in the conventional stencil plate making and printing apparatus shown in FIG. 6, after the stencil master 70 is made by the plate making unit 72,
Since the stencil master 70 is conveyed to the printing unit 75 and is cut by the cutter mechanism 73 to supply one stencil master 70, the conveyance mechanism 74 becomes complicated and causes troubles such as conveyance failure. It was. In addition, since the stencil master 70 after transportation needs to be attached and held to the peripheral wall portion 76a of the plate cylinder 76, and a mechanism necessary for these operations must be installed, there is a drawback that the entire apparatus becomes large. It was

In order to solve these drawbacks, JP-A-2-
In Japanese Patent No. 73987, there is provided a stencil plate making / printing apparatus which is provided with a plate feeding / discharging portion and a plate making portion of a stencil master on the outer circumference of a plate cylinder and performs plate making, plate making, printing and discharging as long as the stencil master is not cut. Proposed. FIG. 7 is a side sectional view of this stencil plate printing apparatus. This device is a plate cylinder 80
The plate feeding / discharging unit 81 is provided in the vicinity of the peripheral wall 80a, and the plate feeding / discharging unit 81 can rotate relative to the peripheral wall 80a of the plate cylinder 80. The plate feeding / discharging unit 81 has a master supply unit 83 that winds and stores the stencil master 82, a platen roller 84, a thermal head 85, and a discharge plate winding unit 86 that winds a used master. Further, a part 80 of the peripheral wall portion 80a of the plate cylinder 80
b is configured to be ink permeable, and the ink supply means 8
The ink supplied from No. 7 is supplied to the printing paper (not shown) from there.

On the other hand, conventionally, as a stencil master, generally, a thick one in which a thermoplastic resin film such as polyester is laminated on a porous support with an adhesive has been used. It has been proposed to use a stencil master using a very thin porous support having a thickness of about 3 to 10 μm, or a stencil master (thickness of about 6 μm to 13 μm) consisting essentially of a thermoplastic resin film. Has an advantage over the stencil master having the above thick support (Japanese Patent Laid-Open No. 24059/1990).
No. 6, 4-7198, and JP-A-3-99890).

However, when the stencil master having a very thin support is used in the apparatus shown in FIG. 7, since these have low mechanical strength, the stencil master will be broken unless handled carefully and the stencil master will be broken. Sometimes it was necessary to connect it to the winding shaft again. Further, when a stencil master having a very thin support was used in an apparatus as shown in FIG. 6, since these were not stiff, conveyance failure (conveyance jam, winding around a conveyance roll) was likely to occur. Such a tendency was more remarkable when the stencil master consisting essentially of the thermoplastic resin film was used.

In view of the above-mentioned circumstances of the prior art, the present invention has a support of a very thin or no support and a thickness of 0.5 μm.
An object of the present invention is to provide a method for mounting a stencil master having a size of about m to 20 μm on a plate cylinder without causing the above-mentioned problems.

[0008]

In order to solve the above-mentioned problems, according to the present invention, a plate cylinder partially formed on an ink-permeable peripheral wall, around which a stencil master is wound, and an ink supply means. And a feeding / discharging plate unit that is disposed close to the outer periphery of the peripheral wall of the plate cylinder and inside the rotary system of the plate cylinder and is rotatable relative to the peripheral wall of the plate cylinder. The plate feeding / discharging unit has at least a master supply unit that winds and stores a stencil master in a roll shape, and a discharge plate winding unit that winds and stores a used master. When the stencil master is wound around, the stencil master is placed on the plate cylinder at a position close to each other, and then the stencil master is wound around the plate cylinder while relatively separating the stencil master from the roll-shaped part. Stencil master characterized by wearing Method of mounting is provided.

[0010]

The method of the present invention will be described in detail below. The present invention is directed to a plate cylinder, a part of which is formed on an ink-permeable peripheral wall, around the outer periphery of which a stencil master is wound, an ink supply means, and a plate cylinder close to the outer periphery of the peripheral wall portion of the plate cylinder. Of the stencil master, the stencil master is wound in a roll shape and accommodated therein. In a stencil plate making and printing apparatus having a master supply unit for winding and a discharge plate winding unit for winding and storing a used master, the present invention relates to a method for winding a stencil master around a plate cylinder. After arranging one end of the stencil and the roll-shaped portion in close proximity to each other, the stencil master is wound around the plate cylinder while the front end of the stencil master and the roll-shaped portion are relatively separated from each other.

Here, the state in which the leading end of the stencil master and the roll-shaped part are relatively separated from each other means that the leading end of the stencil master is fixed to the plate discharge winding part on the plate cylinder, and the roll-shaped part is the peripheral wall of the plate cylinder. (The roll-shaped part may be rotated along the peripheral wall of the plate-cylinder while the plate-cylinder is fixed, or the roll-shaped part may be fixed outside the plate-cylinder rotation system to rotate the entire plate-cylinder. The stencil master may be wound, or conversely, while the roll-shaped part is fixed to the master supply part and the tip of the stencil master is separated along the peripheral wall of the plate cylinder (the stencil master is fixed. The tip of the stencil master may rotate along the peripheral wall of the plate cylinder, or the tip of the stencil master may be outside the rotation system of the plate cylinder (a position that does not interfere with the components on the plate cylinder even when the plate cylinder rotates). However, at this time, only the peripheral wall of the plate cylinder should be fixed to the tip of the stencil master. Does not rotate relative to the part.) It may be wound.

The ink supply means is composed of an ink storage container, an ink supply pump, an ink supply pipe, an ink squeegee roller or blade, an ink doctor roller, etc., and known ones can be used. Further, at those installation locations, the functions may be dispersed and installed at a plurality of locations, and it is possible to arbitrarily select from the side plate of the plate cylinder, the inside of the plate cylinder, or a place other than the plate cylinder.

A metal mesh, a chemical fiber mesh, or a plated metal mesh may be used as a constituent member of the plate cylinder peripheral wall portion, and a known structure is used.

The method of the present invention is advantageous even for a stencil master in which the above-mentioned support is very thin, but exhibits a remarkable effect particularly for a stencil master consisting essentially of a thermoplastic resin film. The stencil master consisting essentially of the thermoplastic resin film will be described below.

The thermoplastic resin film used as the stencil master may be a general thermoplastic resin film formed by an extrusion method, a casting method or the like, and may be polyethylene terephthalate, polyethylene-2,6-naphthalate or polyethylene. Polyester type such as α, β-bis (2-chlorophenoxy) ethane-4,4-dicarboxylate and polycarbonate, polyolefin type such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polybutadiene, polystyrene and polymethylpentene , Polyhexamethylene adipate (nylon 6
6), poly-ε-caprolactam (nylon 6), polyamides such as nylon 610, polyvinylidene chloride, polyvinylidene fluoride, halogenated polymer such as polyvinyl fluoride, polyacrylonitrile, polyvinyl polymer such as polyvinyl alcohol, polyacetal, Examples thereof include polyether sulfone, polyether ketone, polyphenylene ether, polysulfone, polyphenylene sulfide, and copolymers and mixtures thereof. It is preferable that the perforation sensitivity of the film is high, and for that purpose, the thermoplastic resin in the state of constituting the film has a substantially amorphous level to a crystallinity of 15%. Good. More preferably, the film is at a substantially amorphous level. Here, the film of substantially amorphous level is a film whose raw material has almost no melting point by the DSC method, or a film whose crystallization is suppressed by a processing method (quenching method or the like). Such as a film. The crystallinity can be determined by the X-ray method, but may be determined by the area ratio of melting energy by the DSC method.

The film is more preferably based on copolymerized polyester, and the film has a substantially amorphous level. Most preferably, the copolyester as a raw material is substantially amorphous. Here, the substantially amorphous polyester is different from a resin mainly composed of so-called highly crystalline polyethylene terephthalate, which has a crystalline melting point (by the DSC method) of 245 to 260 ° C. which is usually commercially available.
First, one polymer or a blend of two or more polymers as raw materials was sufficiently annealed to equilibrate, and the crystallinity was fixed by the X-ray method, and the crystallization was measured using this sample as a standard. The melting point is 10% or less, preferably 5% or less, and more preferably the melting point is hardly seen even by the DSC method. By using such a low crystal type thermoplastic film, sufficient thermal opening is possible even when the applied energy of the thermal head is very small.

The thickness of the thermoplastic resin film is preferably 0.5 to 20 μm, more preferably 1 to 10 μm. The melting start temperature is 50 to 300 ° C, preferably 70 to 290 ° C.

As a method of subjecting the side of the thermoplastic resin film which comes into contact with the thermal head to the heat fusion preventing treatment, fatty acid metal salt, phosphoric acid ester type surfactant, fluid lubricant such as silicone oil, perfluoro A method of uniformly applying a heat fusion inhibitor such as a fluorine compound having an alkyl group may be mentioned. The coating amount is 0.001 to 2 g /
m ² , preferably 0.005 to 1 g / m ² .

As a method of imparting an antistatic effect to such a thermoplastic resin film, a method of uniformly applying an antistatic agent to the thermoplastic resin film (of course, it is also possible to apply it after mixing it with a heat fusion preventing treatment agent) A) or a thermoplastic resin film.

Examples of the antistatic agent used in the former method of applying an antistatic agent to a thermoplastic resin film include organic sulfonic acid metal salts or polyalkylene oxides, esters, amines, polyethoxy derivatives, carboxylates and amminguanidine salts. Common antistatic agents such as quaternary ammonium salts and alkyl phosphates can be used. The amount of the antistatic agent applied is 0.001 to 2.0 g
/ m ² , preferably 0.01 to 0.5 g / m ² .

As the antistatic agent used in the latter method of incorporating the antistatic agent into the thermoplastic resin film, one or more kinds of organic sulfonic acid metal salt or porkyrene oxide and quaternary ammonium salt are used. And the like.

The organic sulfonic acid metal salt has the formula RSO ₃ X
(Wherein R is an aliphatic group, an alicyclic group or an aromatic group, and X is a metal such as Na, K or Li), and specifically, a metal salt of an alkyl sulfonic acid. ,
Examples thereof include metal salts of alkylbenzene sulfonic acid. Examples of this alkyl include octyl, decyl, dodecyl (lauryl), tetradecyl (myristyl), hexadecyl, octadecyl (stearyl) and the like.
More specific compounds include sodium lauryl sulfonate, potassium lauryl sulfonate, lithium lauryl sulfonate, sodium stearyl sulfonate, potassium stearyl sulfonate, lithium stearyl sulfonate, sodium dodecylbenzene sulfonate, potassium dodecylbenzene sulfonate, Lithium dodecylbenzene sulfonate etc. can be illustrated. On the other hand, the content of the organic sulfonic acid metal salt in the thermoplastic resin film is 0.
It is 1 to 2% by weight, preferably 0.2 to 1.5% by weight. When the amount of the organic sulfonic acid metal salt is less than 0.1% by weight, the antistatic effect is small, while when it exceeds 2% by weight, the film surface is roughened, which is not preferable. The content of the organic sulfonic acid metal salt in the thermoplastic resin film is 0.1 to 2% by weight, preferably 0.2 to 1.5% by weight. The amount of organic sulfonic acid metal salt is 0.1% by weight
If the amount is less than the above range, the antistatic effect is small. On the other hand, if it exceeds 2% by weight, the surface of the heat-penetrable sheet is roughened, which is not preferable.

As the poralkylene oxide to be contained in the thermoplastic resin film, polyethylene oxide,
Examples thereof include polypropylene oxide, polyethylene-propylene oxide copolymer, polytetramethylene oxide and the like, and the molecular weight thereof is 400 to 500,000, more preferably 1
It is 000 to 50,000. The content of polyalkylene oxide is 0.1 to 5% by weight based on the thermoplastic resin film,
It is preferably 0.2 to 4% by weight. When the amount of the poralkylene oxide is less than 0.1% by weight, the antistatic property is deteriorated, while when it exceeds 5% by weight, the mechanical properties of the film are deteriorated, which is not preferable.

[0024] As the conductive agent to be contained in the thermoplastic resin film, wherein _{[(R-N (CH 3)} 2 -R ' ] X (wherein, R represents an alkyl group having 12 to 18 carbon atoms, R' is An alkyl group having 12 to 18 carbon atoms or a methyl group, and X is CI
Alternatively, one or a mixture of two or more quaternary ammonium salts represented by each of Br) is used. The content of the ammonium salt is 1 to 50% by weight, more preferably 2 to 30% by weight, based on the thermoplastic resin film.

FIG. 1 is a side sectional view showing an essential part of a stencil plate printing apparatus to which the method of the present invention is applied, and FIG. 2 is a transverse sectional view thereof. As shown in the figure, the plate cylinder 1 has a hollow cylindrical shape, and side plates 2 and 3 are formed at both ends thereof. One side plate 2
Is supported on a fixed shaft 4 penetrating the plate cylinder 1 via a clutch 5 and a drive shaft 6 from a motor (not shown), and the other side plate 3 is supported on the shaft 4 via a clutch 7. It is structured to be. Therefore, by releasing the clutches 5 and 7, the side plates 2 and 3 and the peripheral wall portion 8 of the plate cylinder 1 can be individually rotated. Further, the portion corresponding to the printing surface of the peripheral wall portion 8 of the plate cylinder 1 is the ink permeable peripheral wall portion 9
Is formed in. Further, an ink supply unit 10 fixed to the shaft 4 is installed in the hollow portion of the plate cylinder 1. The ink supply unit 10 includes an ink distributor 11 and an ink roller unit 12.

A plate feeding / discharging unit 20 is supported on the side plates 2 and 3, and is disposed so as to be close to the outer periphery of the peripheral wall portion 8 of the plate cylinder 1 and inside the rotary system of the plate cylinder 1. The plate feeding / discharging unit 20 has a master supply unit 22 that winds and houses a stencil master 21, a platen roller 23, and a discharge plate winding unit 24 that winds a used master, and these are installed in parallel with the plate cylinder 1. There is. The platen roller 23 and the plate discharge winding section 24 are rotationally driven by a motor 25 via a pulley 26. A drive signal to the motor 25 is supplied by connecting a signal line 28 to a connector 27 provided on the side plate 2. The connection and disconnection of the signal line 28 to the connector 27 can be performed by known mechanical or electrical means. The connector 27 can also serve as a fixing means for the side plate 2.

As shown in FIG. 3, the thermal head 30, which is a perforating means, is attached at a position where it does not hinder the rotation of the plate cylinder 1 and at a position which can face the platen roller 23. The thermal head 30 includes a cam (not shown),
By a mechanism such as a solenoid and a crank, it is possible to move between a position that does not hinder the rotation of the plate cylinder 1 (retracted position) and a position where the platen roller 23 is pressed (advanced position), and only during plate making. The platen roller 23 can be pressure-bonded via the stencil master 21.

In the example of FIG. 3, the thermal head 30 is constructed to be movable, but as shown in FIG. 4, the platen roller 23 is moved to the retracted position inside the rotary system of the plate cylinder 1 and the plate cylinder 1 is rotated. Thermal head 30 fixedly arranged outside the system
You may make it movable between the advance position which is a crimping position with.

Further, both the thermal head 30 and the platen roller 23 may be movable.
That is, the thermal head 30 is arranged outside the rotary system of the plate cylinder 1, and the thermal head 30 is arranged on the platen roller 23.
The platen roller 23 is configured to be movable between an advancing position which is a pressure bonding position with respect to the plate cylinder 1 and a retracted position outside the rotary system of the plate cylinder 1, and the platen roller 23 is a pressing position with which the thermal head 30 is compressed and the plate cylinder 1 is moved forward. It may be configured to be movable between the retracted position inside the rotating system.

As means for detecting the end position of the stencil master 21 in arbitrary plate making, an end mark detecting device (not shown) using a known optical means is installed at a position which does not hinder the rotation of the plate cylinder 1 and is required. It is possible to move according to.

Next, an example of the stencil master mounting method according to the present invention will be described with reference to FIG. 5, but the present invention is not limited to this. The leading end of the stencil master 21 pulled out from the roll-shaped part 21 'around which the stencil master 21 is wound is fixed to the plate discharge winding part 25, and the roll-shaped part 21' is fixed to the outside of the rotary system of the plate cylinder 1 (Fig. 5). (A)). At this time, the roll-shaped portion 21 'is in a state of being rotatable about its winding axis. Next, the plate cylinder 1 is attached to the drive shaft 4
And the stencil master 21 is wound around the plate cylinder peripheral wall portion 8 ((B) and (C) of FIG. 5). Master supply unit 2
The plate cylinder 1 is rotated until 2 reaches a predetermined position near the roll-shaped portion 21 ', and then the rotation is stopped. After stopping the rotation,
Release the fixing of the roll-shaped part 21 ',
(D of FIG. 5). This completes the mounting of the stencil master.

The above-described series of operations may be performed by operating a switch for controlling the rotation of the plate cylinder 1 according to a person's judgment, or information from a position sensor (not shown) installed on the plate cylinder 1 in advance. Alternatively, the rotation of the plate cylinder 1 may be automatically controlled while feeding back. further,
The setting of the stencil master 21 in the master supply unit 22 can also be automated by using known means.

Next, the operation at the time of initial master setting and the detailed structure related thereto will be described. In FIG. 8, the master roll 21 ′ and the plate discharge winding shaft 25 are supplied in a pair as shown in FIG. 9, for example. Also,
An operator may perform an operation of fixing the leading end of the master 21 pulled out from the master roll 21 ′ to the plate discharge winding shaft 25 provided in advance between the side plates 2 and 3. At this time, the master roll 21 ′ has the main body side plate 50 (see FIG.
1) is set in a groove 52a formed in an arm 52 swingably supported by a shaft 51 fixed to 1), while the plate discharge winding shaft 25 is provided with a side plate 21 which is rotatable together with a printing drum.
It is inserted into the groove 2a provided in the.

When the "master set button" (not shown) is pressed after setting up to this point, the cylindrical plate cylinder 8 constituting the printing drum starts slowly rotating in the direction of the arrow in FIG. 8 and becomes as shown in FIG. At this time, since the side plate 2 of the printing drum also rotates together with the cylindrical plate cylinder 8, the platen roller 23 rotatably provided between the side plates 2 and 3 and the plate discharge winding shaft 25 also move to move the master roll. 21 'to Master 2
1 is drawn out and gradually wound around the outer circumference of the cylindrical plate cylinder 8. The master roll 21 'is set on the arm 52 by a braking force applied by a brake piece 53 as shown in FIG. 11 at its axial end, so that the cylindrical plate cylinder 8 has a constant tension. It is designed so that it can be tightly wrapped around the outer circumference.

From here, when the cylindrical plate cylinder 8 and the side plate 2 of the printing drum rotate together, the master 21 is wound around the cylindrical plate cylinder 8 by about one rotation, and the state shown in FIG. 12 is obtained.
At this time, the platen roller 23 is configured to push up the master 21 partially. Here, the rotation of the cylindrical plate cylinder 8 is stopped, and then the solenoid 54 is operated to move the arm 52
It swings in the direction of the arrow in FIG. Then Master Roll 2
The shaft end of 1'is disengaged from the groove 52a of the arm 52 and the side plate 2
It is pushed into the groove portion 2b. Even when the master roll 21 'is inserted into the groove 2b, the brake resistance is similarly given in the rotation direction. Thus, the master roll initial setting is completed as shown in FIG.

Next, the plate making operation will be described. In FIG. 13, the cam 55 is rotated by a motor (not shown), and the arm 57, which is held in the dotted line state in the figure via the cam follower 56, moves to the solid line state by the force of the spring 58, and the platen roller 23 receives the thermal head. The heating element portion of 30 is swung about a shaft 59 that is pressed by the force of the spring 58. Next, the platen roller 23 slowly rotates in the direction of the arrow in the figure, and in synchronization with this, the cylindrical plate cylinder 8 also slowly rotates in the direction of the arrow in the figure. However, at this time, the side plate 2 of the printing drum is fixed to the main body side plate 50 by a device (not shown) and does not rotate. Then, the thermal head heating element selectively generates heat on the basis of the image information of the document to perform perforation plate making on the master 21.

On the other hand, at the same time, the plate discharge winding shaft 25 also rotates in the direction of the arrow in the figure. Therefore, the master 21 which has been wound around the outer periphery of the cylindrical plate cylinder 8 up to that time must be wound around the plate discharge winding shaft 25. Became master, which was changed to new plate 2
1 is wound around the outer periphery of the cylindrical plate cylinder 8, and the plate making and plate feeding are completed.

FIG. 14 shows a rotational driving force transmitting portion of the platen roller 23. The gear 60 at the shaft end of the platen roller 23 meshes with the gear 62 fixed to the motor 61, and the arm 6 to which the motor 61 is fixed.
The mesh of 3 is engaged by the operation of the solenoid 64 fixed to the main body side plate 50. That is, the gears are engaged with each other during plate making and plate supply, and the engagement is released during printing.

The driving force of the plate discharge winding shaft 25 is transmitted in the same manner, and the driving sources of the platen roller 23 and the plate discharge winding shaft 25 are released at the time of printing. Therefore, it is possible to prevent the inertia load from increasing because the rotation load is not applied.

In the printing process, the cylindrical plate cylinder 8 and the printing drum side plate 2 rotate integrally, and the paper fed thereto is pressed by the press roller 65 (FIG. 8) to form an image.

At the time of plate making of the stencil master 21, the plate feeding / discharging unit 20 is stopped at a fixed position (upper position), and the platen roller 23 is moved to 23 'as shown in FIG. 3 or 4.
No. 1 to move to the pressure contact with the thermal head 30, or to move the thermal head 30 to the position 31 'to press against the platen roller 23, or both are moved to press. When the plate discharge winding section 25 rotates in the direction A in FIG. 1, the peripheral wall portion 8 of the plate cylinder 1 is also shown in FIG.
The stencil master 21 which is rotated in the direction and adhered to the peripheral wall portion 8 is wound around the plate discharge winding portion 25 as a used master. At this time, a new stencil master 21 that has not been perforated at the same time
Are sequentially supplied from the master supply unit 22, and the peripheral wall portion 8 is rotated, and when the peripheral wall portion 8 is rotated to a predetermined position, an image signal is supplied to the thermal head 30, and the new stencil master 21 is perforated while the plate cylinder 1 is being perforated. It is attached to the peripheral wall portion 8 of. When the plate cylinder 1 comes to a predetermined position, the thermal head 30
The signal supply to the thermal head 30 or the platen roller 23 is moved to the original position. Then
When the peripheral wall portion 8 of the plate cylinder 1 reaches a predetermined position, the peripheral wall portion 8 and the plate discharge winding portion 22 stop driving, and the plate making is completed. continue,
The plate feeding / discharging unit 20 rotates together with the plate cylinder 1 and can perform rotary printing on printing paper.

In practice, as a stencil master, a substantially amorphous (1% crystallinity) thermoplastic resin film having a thickness of 2.0 μm and mainly composed of a copolyester was applied to the side in contact with the thermal head. Acrylic silicone (US-270; Toagosei Kagaku) as an anti-fusing agent and ammonium salt dodecyltrimetal ammonium chloride [C ₁₂ H ₂₅ N (CH ₃ ) ₂ CH ₃ Cl] as an antistatic agent are 1: 1.
When applied to the plate cylinder by the above method using the one coated so that the dry weight is 0.1 g / m ² in terms of the above ratio, the stencil master can be easily prepared without causing any problems as seen in the prior art. I was able to put it on.

[0043]

By using the method of mounting the stencil master according to the present invention, not only the stencil master can be easily wound around the integrated plate cylinder by a human hand, but also the winding can be easily automated. The method of the present invention is very effective when using a stencil master having a very thin support, particularly a stencil master consisting essentially of a thermoplastic resin film.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a plate cylinder portion of a stencil plate printing apparatus having an integrated plate cylinder to which the present invention is applied.

2 is a side sectional view of the device of FIG. 1. FIG.

FIG. 3 is a cross-sectional view of an example of an apparatus having a plate making unit outside the rotary system of the plate cylinder.

FIG. 4 is a cross-sectional view of an example of an apparatus having a plate making unit outside the rotary system of the plate cylinder.

FIG. 5 is an explanatory diagram of an example of a method of mounting the stencil master of the present invention.

FIG. 6 is a diagram showing a schematic configuration of a conventional stencil plate making and printing apparatus in which a plate making section and a printing section are integrated.

FIG. 7 is a side sectional view showing a main part of a conventional stencil plate making and printing apparatus in which a plate feeding / discharging unit is integrated with a plate cylinder.

FIG. 8 is an explanatory diagram of an operation and a detailed structure at an initial master setting.

FIG. 9 is a diagram showing a master roll and a plate discharge winding shaft in a pair.

FIG. 10 is a diagram showing a state in the middle of a master set.

FIG. 11 is a view showing a structure in the vicinity of a shaft end portion of a master roll.

FIG. 12 is a view showing a state in which the master is wound around the cylindrical plate cylinder by almost one rotation.

FIG. 13 is an explanatory diagram of an initial master set completion state and a plate making operation.

FIG. 14 is a diagram showing a rotation driving force transmission unit of a platen roller.

[Explanation of symbols]

 1 plate cylinder 2, 3 side plate 4 shaft 5, 7 clutch 6 drive shaft 8 peripheral wall part 9 ink permeable peripheral wall part 20 plate supply / discharge unit 21 plate master 22 master supply part 23 platen roller 21 'roll part 24 discharge plate winding part 30 Thermal head

Claims (1)

[Claims] 1. A part is formed on an ink-permeable peripheral wall,
A plate cylinder around which the stencil master is wound, an ink supply means, and an ink supply means, which are arranged close to the outer periphery of the peripheral wall portion of the plate cylinder and inside the rotary system of the plate cylinder, and on the peripheral wall portion of the plate cylinder. A plate supplying / discharging unit capable of rotating relative to each other is provided, and the plate supplying / discharging unit has at least a master supply unit for winding and containing a stencil master in a roll shape, and a plate for discharging and storing a used master. In a stencil plate making / printing apparatus having a winding section, when the stencil master is wound around a plate cylinder, after the leading end portion and the roll-shaped portion of the stencil master are arranged in close proximity to each other, the leading end portion and the roll-shaped portion of the stencil master are arranged. A method of mounting a stencil master, characterized in that the stencil master is wound around a plate cylinder while being relatively separated from the section.