JPH042046Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a feed guide device for base paper and manuscript sheets in a plate-making device, and particularly to a feed guide device for base paper and manuscript sheets suitable for a thermal plate-making device using split exposure. Related.

Background of the invention A plate-making device for heat-sensitive plate-making of a base paper such as a stencil printing base paper by divided exposure has already been proposed in Japanese Patent Application No. 1979-979445 by the same applicant as the present applicant, and this type of plate-making device A plate making and printing apparatus consisting of a combination of a plate making apparatus and a printing apparatus has already been proposed in Japanese Patent Application No. 57-207216 by the same applicant as the present applicant.

Thermal plate making using the above-mentioned plate making apparatus involves an exposure process in which light is irradiated onto a polymer of base paper and a manuscript sheet from the side of the base paper, and a predetermined amount of the polymer is applied each time one exposure process is completed. The process of transporting the base paper is repeated alternately to complete the plate making of one sheet of base paper, and in this divisional plate making, from the start of plate making of one sheet of base paper to the completion of plate making, the base paper is It is required that the plate and the original sheet do not deviate from each other, otherwise plate making will not be performed that is faithful to the original image on the original sheet.

In addition to the above-mentioned problems, in the above-mentioned plate-making and printing apparatuses, after the original sheet is set at a predetermined plate-making start position, the original paper is moved so that the leading edge of the original paper is locked on the plate cylinder of the printing apparatus. is fed toward the plate cylinder by a predetermined amount, and at this time, the original sheet on the original paper may move together with the original paper, and since the movement of the original sheet is uncertain, it is difficult to set the original sheet. location becomes uncertain;
This causes misalignment of the stamp surface on the base paper.

Purpose of the invention This invention allows for selection and setting of a state in which the original paper and original sheet are transported without shifting relative to each other, and a state in which movement of the original sheet is prevented and only the original paper is transported, thereby preventing misalignment of the stamp surface. It is an object of the present invention to provide a feed guide device for base paper and manuscript sheets of a plate-making device, which allows reliable plate-making to be performed without any problems.

Structure of the invention According to the invention, the above-mentioned purpose is to provide a base paper feed guide plate on which the base paper pulled out from the base paper storage unit is placed on the upper surface and guide the base paper to the plate making unit, and a base paper feed guide plate. a free roller which is provided at a position opposite to the upper surface and is movable between a position where it is pressed against the upper surface and a position where it is separated from the upper surface; A document mounting table that guides the original paper on the original paper feed guide plate to feed the original paper to the plate making section, and a high frictional resistance member provided at a position opposite to the upper surface of the original document mounting table and at a portion facing the upper surface. a document stopper movable between a position pressed against the upper surface and a position separated from the upper surface;
When the free roller is in a position separated from the upper surface of the original paper feed guide plate, the original stopper is freely positioned in a position where it is pressed against the upper surface of the original document mounting table, and the free roller is moved. a linking means for positioning the document stopper at a position separated from the top surface of the document mounting table when the document stopper is in a position pressed against the top surface of the document feed guide plate; and a linking means for positioning the free roller between the two positions. This is achieved by a feeding guide device for the original paper and the original sheet at the prepress position, which has a drive means for moving the original paper to the prepress position.

Effects of the invention When only the base paper is transferred before the start of plate making, the free roller is located at a position separated from the top surface of the base paper feed guide plate, and the document stopper is located at a position where it is pressed against the top surface of the document table. At this time, the high-frictional resistance member of the original stopper contacts the original sheet on the original table, and the frictional resistance provided by the high-frictional resistance member prevents the movement of the original sheet. A relatively large resistance is now applied, so that even if the original paper moves, the original sheet on the original does not move accordingly, and the original sheet and the original sheet are held together. When the documents are transferred without shifting from each other, the free roller is located at a position where it is pressed against the top surface of the document feed guide plate, and the document stopper is accordingly located at a position where it is separated from the top surface of the document placement table. At this time, the free roller brings the base paper and the original sheet into close contact with each other on the base paper feed guide plate, thereby increasing the mutual frictional resistance between the two, and the base paper is transported. As the original sheet moves, the original sheet is transported together with the original paper without shifting or moving relative to the original paper.

DESCRIPTION OF EMBODIMENTS The present invention will now be described in detail with reference to embodiments with reference to the accompanying drawings.

FIGS. 1 to 3 show one embodiment of a plate-making apparatus equipped with a feed guide device for base paper and original sheets according to the present invention. In these figures, reference numeral 1 indicates an exposure device, and the exposure device includes a box 2 with an upward opening, and a rectangular glass light that is attached to the upper opening of the box 2 and forms the upper surface of the box. It has a transmitting plate 3, a light source device 4 such as a xenon discharge tube that irradiates light beams toward the light transmitting plate 3 provided in the box 2, and a reflecting mirror 5. In the figure, it is designed to be driven back and forth in the vertical direction. A pressing plate 6 is fixedly arranged above the exposure device 1 and facing the light transmitting plate 3 .

The drive device 10 has a drive member 11 fixedly connected to the box 2 of the exposure device 1, and moves the exposure device 1 to an open position (lowering position) and light transmitting plate 3
Pressing position (raised position) where is pressed against the pressing plate 6
It is designed to drive reciprocatingly between the two.

A base paper storage section 7 is provided on one side of the exposure device 1, that is, on the right side in the figure, and a base paper roll 8 wound with a base paper S is arranged in the base paper storage section so as to be replaceable. . A base paper feed guide plate 9 is provided between the base paper storage section 7 and the exposure device 1. The base paper feed guide plate 9 is used to place the base paper pulled out from the base paper roll 8 of the base paper storage section 7 on its upper surface and transfer the base paper between the plate making section, that is, the light transmitting plate 3 and the pressing plate 6 of the light source device 1. It is designed to guide you towards the center.

A document mounting table 12 is provided above the original paper storage section 7 . The document mounting table 12 has an upper surface located at substantially the same height as the upper surface of the original paper feed guide plate 9, and the original sheet D is placed on the upper surface, and the original sheet D is placed on the upper surface of the original paper feed guide plate 9. The paper is guided to pass over the base paper S on the plate 9 and to be sent to the plate making section.

A support shaft 14 is provided above the paper feed guide plate 9 and spanned between a pair of side plates 13. The support shaft 14 rotatably supports one end of the roller support member 15 and one end of the document stopper 18, respectively.

The roller support member 15 has a pivot shaft 16 at the other end.
The free roller 17 is rotatably supported. The free roller 17 is located at a position opposite to the upper surface of the paper feed guide plate 9, and as the roller support member 15 rotates around the support shaft 14, the free roller 17 moves the base paper feed guide plate 9 as shown in FIG. It is movable between a position in which it is pressed against the top surface of the device and a position in which it is separated from said top surface as shown in FIG. The roller support member 15 is urged by a tension spring 23 in a counterclockwise direction around the support shaft 14 as seen in FIGS. It is elastically biased toward the top surface.

The document stopper 18 faces the upper surface of the document table 12 near the other end, and a high frictional resistance member 19 made of a material with high frictional resistance such as rubber is attached near the other end. The high frictional resistance member faces the upper surface of the original table 12. The document stopper 18 has a high frictional resistance member 19.
As shown in FIG.
As shown in FIG. 2, the document plate 9 can be rotated between a position separated from the upper surface of the document table 12.

The roller support member 15 is provided with a connecting pin 20 that engages with the document stopper 18, and the connecting pin 20 is connected when the free roller 17 is separated from the upper surface of the original paper feed guide plate 9 as shown in FIG. When the document stopper 18 is in the second position, the document stopper 18 freely allows its high frictional resistance member 19 to be in a position pressed against the upper surface of the document table 12 due to its own weight. When the original stopper 1 is in the position pressed against the upper surface of the original paper feed guide plate 9 as shown in the figure,
8 is lifted and its high frictional resistance member 19 is positioned at a position separated from the upper surface of the original table 12.

A drive lever 21 is integrally provided on the roller support member 15, and a plunger 25 of a solenoid device 24 engages with the drive lever. The solenoid device 24 is of the bistable type, such as a latching solenoid, and its plunger 25 engages the drive lever 21 to pull the roller support member 15 against the spring 23, as shown in FIG. A raised position in which the free roller 17 is moved clockwise around the support shaft 14 against a force to a position where it is separated from the upper surface of the document feeding guide plate 9, and a driven position as shown in FIG. It is selectively movable between a lowered position where the free roller 17 is separated from the engagement of the lever 21 and allows the free roller 17 to be pressed against the upper surface of the document feed guide plate 9 by the spring force of the tension spring 23. .

A stopper rod 33 pivotally supported by a drive lever 32 is provided on the light transmitting plate 3, and the stopper rod is adapted to position the original sheet.

A plate cylinder 30 of a printing device is provided on the other side of the exposure device 1, that is, on the left side in the figure. The plate cylinder 30 is a well-known cylindrical body having an ink-permeable structure, and is rotated counterclockwise in the figure by an electric motor (not shown). The plate cylinder 30 has a base paper locking device 3 that selectively locks one end of the base paper S on its outer peripheral surface.
1, and the base paper S locked by the base paper locking device is wound around its outer peripheral surface and attached.

A base paper guide member 26, a base paper feed roller 27, and a base paper cutter 28 are provided between the exposure device 1 and the plate cylinder 30.

An original sheet discharge path 29 is provided obliquely above the plate cylinder 30 side of the exposure device 1 by two guide plates 29a and 29b.

At the start of plate making, as shown in Figure 1,
The plunger 25 of the solenoid device 24 is in the raised position, so that the free roller 17 is in a position separated from the upper surface of the document feed guide plate 9, and the document stopper 18 is moved by its own weight to the high friction member 1.
9 is in a position pressed against the upper surface of the document table 12. The base paper S is drawn out in advance from the base paper roll 8 of the base paper storage section 7, passes through the upper surface of the base paper feed guide plate 9, the upper surface of the light transmitting plate 3, and the base paper guide member 26, and reaches the base paper feed roller 27, whose tip end is connected to the base paper cutter. It is located in the 28th section. When setting the original sheet D, the original sticker D is placed on the original placing table 12 with the original image side facing down, and the original sheet D is placed on the original placing table 12 with the original stopper 19 lifted by hand. It slides over the base paper S on the base paper feed guide plate 9 and is inserted until its leading end abuts against the stopper rod 33 as shown in FIG. When the original sheet D is inserted to the position where its leading edge contacts the stopper rod 33, that is, when the setting of the original sheet D is completed, the leading edge of the original paper S is moved by the original feeding roller 27 to the original position of the plate cylinder 30. It is transferred towards the stopping device 31. At this time, the document stopper 18 has already been released, and the high friction member 19 is pressed against the document sheet D on the document table 12 by the own weight of the document stopper 18. At this time, even if the original paper S is transferred toward the plate cylinder 30 as described above, the original sheet D is held at the normal original setting position without moving, and the original sheet D is held at the normal original setting position even if the original paper S is transferred toward the plate cylinder 30 as described above. There will be no needless transfer due to

When the base paper S is transferred toward the plate cylinder 30 and its leading end is locked by the base paper locking position 31, as shown in FIG.
The plunger 25 of No. 4 is located at the lowered position, and the free roller 17 is pressed against the upper surface of the original paper feed guide plate 9 by the spring force of the tension spring 23, and the original paper S and original sheet D between them are pushed. They become pressed against each other. At this time, the document stopper 18 is lifted by the connecting pin 20, and the high frictional resistance member 19 is separated from the upper surface of the document table 12 and is at a position away from the document sheet D.

In the above-described state, the exposure device 1 is raised by the drive device 10, and when the exposure device 1 is in the pressing position, the light source device 4 emits light to perform one divided exposure and the first thermal plate making. Thereafter, the exposure device 1 is lowered by the driving device 10, and during the lowering process, the plate cylinder 30 rotates in sections in the counterclockwise direction in the figure, thereby transporting the base paper S. At this time, as mentioned above, the free roller 17
As a result, the base paper S and the original sheet D are pressed against each other, and the high frictional resistance member 19 of the original stopper 18 is separated from the original sheet D, so that the original sheet D on the base paper S becomes one with the base paper S. The document moves under the stopper rod 33 and is guided to the document discharge path 29. By repeating the above-described exposure and transport alternately, plate making corresponding to one original sheet D is completed, after which the base paper S is cut by the base paper cutter 28, and then the base paper S The printing on the printing cylinder 30 is completed.

Although the present invention has been described in detail with respect to specific embodiments above, the present invention is not limited to the above-mentioned embodiments, and various other embodiments are possible within the scope of the present invention. This will be obvious to those skilled in the art.

[Brief explanation of drawings]

1 and 2 are schematic vertical cross-sectional views showing one embodiment of a plate-making device equipped with a feed guide device for base paper and original sheets according to the present invention, and FIG. FIG. 2 is a plan view showing a feeding guide device according to the present invention. 1...Exposure device, 2...Box, 3...Light transmission plate, 4...Light source device, 5...Reflector, 6...Press plate, 7...Base paper storage section, 8...Base paper roll, 9
...Base paper feed guide plate, 10...Drive device, 11...
... Drive member, 12 ... Original table, 13 ... Side plate, 14 ... Support shaft, 15 ... Roller support member,
16...Axis, 17...Free roller, 18...
Original stopper, 19... High frictional resistance member, 20...
... Linking pin, 21 ... Drive lever, 23 ... Tension spring, 24 ... Solenoid device, 25 ... Blungier, 26 ... Paper guide member, 27 ... Paper feed roller, 28 ... Paper cutter, 29 ... Original sheet discharge path, 29a, 29b... guide plate, 30
... plate cylinder, 31 ... base paper locking device, 32 ... pivoting lever, 33 ... stopper rod, S ... base paper,
D...Manuscript sheet.

Claims (1)

[Scope of utility model registration request] a base paper feed guide plate on which the base paper pulled out from the base paper storage section is placed and guides the base paper to the plate-making unit; and a base paper feed guide plate provided at a position opposite to the top surface of the base paper feed guide plate and pressed against the top surface. a free roller movable between a position where the original sheet is placed on the upper surface and a position separated from the upper surface, and a document sheet is placed on the upper surface, and the original sheet is sent to the plate making section via the original sheet on the original paper feed guide plate. a document placing table for guiding the original document placing table; and a document placing table provided at a position opposite to the upper surface of the document placing table and having a high frictional resistance member at a portion facing the upper surface, and having a position where it is pressed against the upper surface and a position where it is pulled away from the upper surface. a document stopper that is movable between the two positions; and a document stopper that is pressed against the top surface of the document mounting table when the free roller is in a position separated from the top surface of the document feed guide plate. When the free roller is in a position pressed against the upper surface of the original paper feed guide plate, the original stopper is positioned at a position separated from the upper surface of the original document mounting table. A feeding guide device for original paper and original sheets at a prepress position, comprising a linking means and a driving means for moving the free roller between the two positions.