JPH10146950A - Plate making apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make printing surface uniform by applying sufficient light energy to a place of low adhesion between a manuscript sheet and a stamping substrate in plate making work. SOLUTION: A light transmitting manuscript sheet 26 having a printing image part and a stamping substrate 25 of a foam resin which contains dispersed carbon black, has open cells, and can be impregnated with stamp ink are overlaid on a transparent plate 11 to be pressed through an inner lid 10, an intermediate lid 9, and an outer lid 8 from above. Besides, when a light source 14 with a reflector 13 which is arranged below the transparent plate 3 is moved in the longitudinal direction of the substrate 25 by a driving motor 40, a rack gear 43, and a rack 44, the moving speed in the middle of the substrate 25 in the longitudinal direction is controlled to be lower than the moving speed at both end parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a cell having an open cell,
By superimposing a porous sheet that can be impregnated with stamp ink and a light-transmissive original sheet having a desired image portion, and irradiating light from the original sheet side, ink oozes out to the image portion on the surface of the porous sheet. The present invention relates to a structure of a plate making apparatus for forming a portion and a non-ink bleeding portion for a non-image portion.

[0002]

2. Description of the Related Art Conventionally, various printing apparatuses such as stamps have been used to print desired images such as pictures and characters on a print medium such as a postcard. Of these, Japanese Patent Laid-Open No. 7-2
In Japanese Patent No. 85258, a stamped surface composed of an ink exuding portion which becomes a mirror image of a desired imprint original and an ink non-exuding portion which closes the continuous bubbles is formed on the surface of a sheet having open cells and impregnated with stamp ink. A method of manufacturing a multicolor stamp has been proposed in which a printing plate is used, a plurality of colors of ink are directly sucked into an ink exuding portion of the printing plate, and a printing medium such as a postcard is pressed against the printing plate surface for printing. .

In the above publication, as a first method for manufacturing (plate making) a printing plate having a printing surface formed of an ink bleeding portion which is a mirror image of a predetermined imprint document and a non-ink bleeding portion which closes open cells, is provided. A thermal transfer sheet is superimposed on the surface of a material sheet (porous sheet) which has open cells and can be impregnated with stamp ink, and an original sheet having a desired imprint is superimposed thereon so as to be a mirror image, and the material sheet is compressed. By irradiating infrared rays from above the original sheet in this state, a transfer portion and a non-transfer portion of the heat transferable ink are formed on the surface of the material sheet, the transfer portion becomes a non-ink bleed portion, and the non-transfer portion becomes a bleed ink It is disclosed to have a stamped surface as a part.

[0004] In a second method, a heating plate made of at least one selected from the group consisting of carbon and a polymer substance is placed on the surface of a material sheet having open cells and impregnated with stamp ink, Further, by impregnating a hard-to-evaporate substance into a document sheet having a desired imprint made of a liquid-absorbing opaque sheet so that the imprint document image becomes a mirror image, and then irradiating a flash containing infrared rays from the document sheet side However, the heating plate corresponding to the portion other than the imprint original image generates heat and melts the surface of the material sheet to form an ink non-exuding portion, while the surface of the material sheet corresponding to the imprint original image does not melt and forms an ink exuding portion. It is disclosed to have a stamped surface.

In these plate making methods, an original sheet is placed on a support plate such as an acrylic transparent plate on the light irradiation side, and then a thermal transfer sheet or a heating plate is stacked thereon.
Further, a porous sheet is superimposed on the porous sheet, and a pressing force is applied to a portion above the porous sheet so that a flash is emitted from the support plate side.

[0006]

However, only the outer periphery of the support plate is supported by a main body case or the like, while the pressing force for pressing down from the pressing plate is substantially equal to the entire surface of the porous sheet. The pressing force causes the central portion of the support plate to be greatly bent downward and deformed compared to the peripheral portion, and the degree of adhesion to the original sheet, the heating plate, and the like at the substantially central portion of the porous sheet is reduced. Run short. As a result, there is a problem in that the sharpness of a predetermined image portion in the substantially central portion of the porous sheet is lost, plate making failure occurs, and the porous sheet is wasted.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and has as its object to provide a plate making apparatus capable of performing good plate making.

[0008]

According to a first aspect of the present invention, there is provided a plate making apparatus comprising: a stamp substrate formed of a porous sheet having continuous cells and impregnated with a stamp ink; By irradiating light from the transparent plate side in a state in which a light-transmitting original sheet having an image portion is overlaid on the transparent plate and pressed, an ink exuding portion for the image portion is formed on the surface of the stamp substrate. In a stamp plate making apparatus for forming an ink non-exuding portion with respect to a non-image portion, a light source body movable substantially parallel to the transparent plate is provided below the transparent plate, and the light source body is moved. And speed control means for controlling the moving speed of the light source at a portion where the pressing force against the stamp substrate is weaker than at other portions.

The invention described in claim 2 is the first invention.
In the plate-making apparatus described in the above, the speed control means may be configured such that a moving speed of the stamp substrate placed on the transparent plate at a substantially central portion in a longitudinal direction is lower than a moving speed near both end portions of the stamp substrate. It is controlled so that According to a third aspect of the present invention, in the plate making apparatus according to the first or second aspect, a light reflector is added to the light source body.

Further, according to the invention described in claim 4, in the plate-making apparatus according to any one of claims 1 to 3,
The driving unit is configured to move the light source linearly along the longitudinal direction of the stamp substrate, and the light source is formed in a linear shape perpendicular to the longitudinal direction of the stamp substrate. It is.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described. FIG. 1 is a schematic side sectional view showing a stamp unit for making a stamp using the stamp substrate of the present invention, and printing on a postcard or the like using the stamp made by the stamp, and FIG. 2 shows a movable lid opened. It is a schematic sectional side view of the stamp unit of a state.

In FIGS. 1 and 2, the stamp unit 1 basically comprises a plate making section 2 (upper side of the stamp unit 1) and a printing section 3 (lower side of the stamp unit 1). 3 is configured to be separable. That is, the locking claw 5 with the biasing spring provided on the lower side of both sides of the case 4 of the plate making section 2 is disengaged from the upper edge of the side of the bottomed case 7 of the printing section 3 by the locking claw 5.
The case 4 can be stacked on top of the case 4 so as to be integrated, or the bottomed case 7 can be separated from the case 4 to take out the articles on the bottomed case 7 and print it as described later.

First, the configuration of the plate making section 2 will be described. A transparent plate 11 such as a transparent acrylic plate or the like having a substantially rectangular shape in a plan view is removably mounted on a stepped portion 12 having four rounds in a plan view. I have. Below this transparent plate 11,
A light source 14 with a reflector 13 and a driving means 15 for moving the light source 14 in parallel along the lower surface of the transparent plate 11 are arranged. The reflector 13 as a light reflector whose inner surface is formed of a member having excellent light reflection characteristics is open upward, and the longitudinal direction of the reflector 13 is the length of the stamp substrate 25 having a length L described later. It extends so as to be orthogonal to the longitudinal direction.

A long light source 14 is arranged on the inner surface of the reflector 13 along its longitudinal direction.
It is detachably supported at 6,16. For example, when the cross section of the reflector 13 is a part of a substantially ellipse or a hyperbolic shape, by disposing the light source body 14 at the focal position of those curves, a group of light rays parallel to the lower surface of the transparent plate 11 is formed. Can be irradiated. By using a halogen lamp, an incandescent lamp, or the like as the light source 14, the moving light source 14 can be continuously turned on.

The frame 35 supported in the case 4
, Both ends of a pair of guide shafts 36, 36 extending along the longitudinal direction of the stamp substrate 25 are fixedly supported.
A pair of sliding parts 3 attached to the lower surface of the reflector 13
7, 37 are slidably fitted on the guide shafts 36, 36. Rotating shafts 39 orthogonal to the direction in which the guide shaft 36 extends are pivotally supported on brackets 38, 38 attached to both ends of the reflector 13. A transmission gear 42 meshing with a pinion 41 of a drive motor 40 supported by one bracket 38 is fixed to the rotating shaft 39, and a rack gear 43 fixed at a substantially central position of the rotating shaft 39 is connected to the frame. 35 and is engaged with a rack 44 extending in a direction perpendicular to the rotation shaft 39. In addition, instead of the rack and pinion, an endless timing belt is wound around timing pulleys disposed on both ends of the guide shafts 36, and the light source 14 is connected to a part of the timing belt. Alternatively, one of the timing pulleys may be configured to be rotationally driven by a driving motor.

On the other hand, on the upper left and right sides of the case 4,
The outer lid 8, the intermediate lid 9, and the inner lid 10, which are movable lids, are pivotally attached to the pin 1.
8, 19, and 20, each of which is pivotally attached to be openable and closable.
5, a transparent sheet 22 (see FIG. 5B), and a light-transmissive original sheet 26, and a flat pressing member such as a sponge or rubber for pressing the upper surface of the transparent plate 11 with an equal pressure. 27 is stuck. When the intermediate lid 9 is disposed on the upper surface of the inner lid 10, a press bulging portion 28 for uniformly pressing the upper surface of the inner lid 10 at a plurality of locations is formed integrally. A handle 29 is provided on the outer surface of the outer cover 8, and a hook 31 for engaging and disengaging with a hole-shaped engaging portion 30 of the case 4 is provided on a free end side of the outer surface of the outer cover 8. It is mounted so as to be urged in the engagement direction via the. Further, the outer lid 8 is formed with at least two pressing bulges 33 for pressing the intermediate lid 9 substantially uniformly when the outer lid 8 is overlaid on the upper surface of the intermediate lid 9.

As shown in FIG. 4, the case 4 is provided with a CPU 45 which is a microcomputer-type control device as speed control means for controlling the drive speed of the drive motor 40. ROM (read only memory) 46 storing a speed control program
And a RAM (memory readable and writable at any time) 47 for temporarily storing various data, a first limit switch 48 for sensing the start of movement of the light source 14, a second limit switch 49 for sensing the end of the light source 14, and a plate making operation start. Switch 50, a drive circuit 51 for operating the drive motor 40, and a pressure disposed at appropriate intervals or continuously (in a straight line) along the moving direction of the light source 14 on the lower surface of the inner lid 10. A sensor 52, a power supply circuit 53 for supplying power to the light source 14, and the like are connected.

The drive motor 40 is a step motor or the like capable of rotating forward and backward, and the pressure sensor 52 detects the position of the pressing force against the stamp substrate 25. The rotation speed of the drive motor 40, and thus the arrow A in FIG.
Alternatively, the control for changing the speed at an intermediate portion or the like when the light source body 14 moves in the B direction will be described later. Next, the configuration of the stamp substrate 25 of the present invention and a plate making method using the same will be described in detail. The stamping substrate 25 of the first embodiment has open cells and contains carbon black or a light energy-absorbing substance dispersed in a porous material that can be impregnated with stamp ink. The material is a foamed resin material such as a polyolefin-based resin, a polyvinyl chloride-based resin, and a polyurethane-based resin, and preferably has flexibility (softness) when formed into a porous sheet. Therefore, open pores are exposed over the entire surface of at least the wide surface 25a of the stamp substrate 25 before plate making (see FIG. 5A).

It is also possible to use a rubber-based material. The thickness of the stamp substrate 25 is about 1 mm to 5 mm. As described above, when the surface side of the stamp substrate 25 of this type is irradiated with light, it is heated and melted to close the pores exposed on the surface by containing the carbon black or the light energy attracting substance. It will have properties. Further, after the surface side of the stamping substrate 25 is melted in the compressed state, the pores exposed to the surface are solidified and closed, forming a non-ink bleeding portion. It becomes the exudation part.

In the examples, the weight ratio of the carbon black or the light energy-sucking substance contained is such that the content ratio of the carbon black to the polyurethane foamed resin is 1.
0% to 1.5% by weight. The content of carbon black is not limited to the above, but may be 0.1% by weight.
It may be in the range of ~ 15% by weight. If the content of carbon black is larger than 15% by weight, the stamp substrate 25 itself becomes black, and it becomes impossible to know the color of the applied stamp ink, and it is also impossible to know whether or not the stamp ink has been applied. If it is less than 0.1% by weight, sufficient heat generation cannot be obtained.
There is a problem that the surface of the stamp substrate 25 cannot be melted.

Further, as the light energy attracting substance,
There are silver chloride and silver bromide. At the time of plate making, PPC paper (manuscript paper for tracing) is used as the manuscript sheet 26 in advance.
Draw a light-impermeable image portion 21 on the surface of a light-transmissive paper such as black, white, gold, silver or the like with light-opaque ink, oily marker, paint, paint, or the like. .

On the other hand, a transparent sheet 22 to be interposed between the original sheet 26 and the wide lower surface 25a of the stamp substrate 25 is prepared. The transparent sheet 22 has a melting point of the stamp substrate 25 (about 7 in the case of a soft polyurethane resin).
(0 ° C., about 120 ° C. in the case of a soft polyolefin-based resin). As an example, transparent PE having a high melting point (about 230 ° C.)
T (polyethylene terephthalate) resin film is preferable, and the thickness of each sheet is about 0.025 mm to 0.2 mm.

Next, the original sheet 26 is placed on the transparent plate 11 so that the image area 21 faces upward, and then the transparent sheet 22 is overlaid. The layers are stacked such that the exposed side faces downward (see FIG. 5B). Further, when the inner lid 10, the intermediate lid 9, and the outer lid 8 are sequentially stacked and the operator applies a predetermined pressing force to lock the hook 31 to the engaging portion 30, the operation switch provided on the engaging portion 30 is provided. 50 is turned on, the light source body 14 is continuously lit, and movement is started (see FIG. 5C). For example, when the light source body 14 is located at the left end in FIG. 1, the light source body 14 moves in the direction of arrow A in FIG.

In the first embodiment of the speed control, FIG.
As shown in the figure, the speed becomes highest at the starting point of the stamp surface of the stamp substrate 25, and then gradually decreases toward the center of the stamp substrate 25 having the length L. After reaching the minimum speed, the speed increases,
After the speed returns to the maximum at the end of the stamped surface portion of the stamp substrate 25, speed control is performed such that the speed is reduced so as to stop. The first limit switch 4
When the reflector 13 or the bracket 38 supporting the light source 14 abuts on the eighth or second limit switch 49, the movement is stopped and the light is turned off.

In this manner, both the center and both ends of the stamp substrate 25 having a small pressing force can receive substantially the same amount of light energy per unit area. The light energy that has passed through a portion (non-image portion) other than the image portion 21 on the original sheet 26 passes through the transparent sheet 22 as it is, and the light energy passes through the transparent sheet 22.
5, carbon black near the surface (light irradiation side surface) corresponding to a portion (non-image portion) other than the image portion 21 absorbs heat, and a portion other than the image portion 21 on the stamp substrate 25 (non-image portion). When the surface portion corresponding to the line portion is heated and melted, and then solidified, pores on the surface are closed, and an ink non-bleed portion 23a having a predetermined thickness is formed (FIG. 5).
(D) and FIG. 6).

On the other hand, the original sheet 26 is
When is black containing carbon, the image area 21 is heated by light energy irradiated from the transparent plate 11 direction,
Although the temperature rises, the transparent sheet 22 corresponding to the image area 21 conducts heat in a lateral direction or the like within the thickness of the sheet.
In other words, the heat generated on the original sheet 26 side is absorbed and dispersed by the transparent sheet 22. The surface of the stamp substrate 25 corresponding to the image area 21 is not heated, and the shape of the image area 21 is not heated. Exuding part 2 with pores exposed
It becomes 4. When the image portion 21 is not black, the light energy is blocked / reflected by the image portion 21 and the image portion 2
The surface portion of the stamp substrate 25 corresponding to No. 1 is not heated and becomes the ink exuding portion 24 in which the pores are exposed.

Therefore, when the transparent sheet 22 and the original sheet 26 are removed from the wide surface 25a of the stamp substrate 25 after the light irradiation, the image on the original sheet 26 is removed as shown in FIGS. The ink bleeding portion 24 remains with the pores in the shape of the mirror image of the line portion 21 exposed,
The ink non-bleeding portion 23a corresponding to the non-image portion can be made as a stamp S having a predetermined stamped surface formed on the wide surface 25a of the stamp substrate 25.

As described above, by changing the moving speed of the light source 14, a stamp S having a clear and uniform stamp surface over the entire stamp substrate 25 can be made. Preferably, the transparent sheet 22 is formed by sandblasting or finely embossing or embossing the surface of the transparent sheet 22 and the stamp substrate 25 that is in contact with the wide surface of the stamp substrate 25.
A thin insulated air layer is formed between the transparent sheet 22 and the wide surface of the sheet, and the heat generated in the image area 21 of the original sheet is efficiently absorbed and dispersed by the transparent sheet 22 and transmitted toward the surface of the stamp substrate 25. As a result, the pores in the shape of the mirror image of the image portion 21 remain exposed, and the effect of imprinting the edges of the imprint of the ink exuding portion 24 is obtained.

As another embodiment of the control of the moving speed of the light source 14, a stamp substrate 25 by the pressure sensor 52 is used.
When the pressure at each of the plurality of points is sensed, if the pressure at each of the points has a deviation from the standard pressure, speed control may be executed to increase or decrease the standard moving speed according to the deviation amount. In this case, control may be performed such that the moving speed is increased at a pressure location higher than the standard pressure, and the moving speed is decreased at a pressure location lower than the standard pressure.

In another embodiment, the stamp substrate 2
5 is a porous sheet which does not contain carbon black or a light energy-absorbing substance, has open cells, and can be impregnated with stamp ink, and is made of the same material as described above. In this case, as the heating sheet that comes into contact with the wide surface (the surface where the pores are exposed) of the stamp substrate 25, a black pigment such as carbon black is mixed in advance or printed on the surface. In this embodiment, light emitted from the transparent plate 11 side passes through the document sheet 26, and at a portion corresponding to the non-image portion, is heated by light energy absorbed by the black heating sheet,
Since the facing surface of the stamp substrate 25 is once melted and solidified by the heat, the stamp ink becomes an ink non-exuding portion 23 a where the stamp ink does not exude, and the light corresponding to the image portion 21 is not transmitted. The ink bleeding portion 24 is formed while the pores in the sheet 26 having the shape of the mirror image of the image portion 21 are exposed, and the ink non-bleeding portion 23a corresponding to the non-image portion is formed on the wide surface of the stamp substrate 25, and It is possible to make a plate as a stamp S of a predetermined stamp surface which is a mirror image of the image area 21.

Next, the configuration of the printing unit 3 will be described.
The preprinted stamp S is placed face down on a support table or the like on the upper surface of the bottomed case 7 removed from the case 4 and the back side of the prepressed stamp S (opposite the stamped surface). After affixing a double-sided adhesive tape (not shown) to both ends of the bottom case 7 and rolling and moving the pressing roller (not shown) taken out from the pressing roller holder on one side of the bottomed case 7 as well, The back surface of the stamp S is wound around and fixed to the peripheral surface of the pressing roller. Next, ink of a predetermined color is sucked into the ink bleeding portion 24 corresponding to the image portion of the stamp S, and the ink attached to the ink non-bleeding portion 23a is wiped off. (Not shown)
Is placed on the sheet, and the sheet is rolled while being pressed by the pressing roller with handle, so that printing on the sheet can be completed. In addition, it is a matter of course that a multicolor printing stamp is obtained by injecting another color of stamp ink into another portion of the ink exudation portion 24.

As described above, depending on the magnitude of the pressing force on the stamp substrate 25, in other words, the stamp substrate 2
By controlling the moving speed of the light source 14 according to the degree of adhesion between the stamp substrate 5 and the document sheet 26, the stamp substrate 2
5 has the effect that the performance of the stamp surface that can be formed on the fifth embodiment can be made uniform throughout. And the light source 14
By adding the reflector 13 to the light source body 14, strong light energy is applied only to the vicinity of the surface of the stamp substrate 25 facing the moving position of the light source body 14.
The uniformity of the performance effect of the stamp surface due to the fluctuation of the moving speed of the stamp can be improved.

Further, in the short width direction orthogonal to the longitudinal direction of the stamp substrate 25, it is considered that the fluctuation (deviation) of the pressing force is small.
If the reflector 13 is formed in the longitudinal direction in a direction orthogonal to the longitudinal direction of the stamp substrate 25, the stamp substrate 25
Along the width direction, the light source 14 and the reflector 13 can receive substantially uniform light irradiation, and the light irradiation can be easily controlled.

[0034]

According to the first aspect of the present invention, there is provided a plate-making apparatus comprising a porous sheet having continuous cells and impregnated with a stamp ink, and a light-transmitting original having a desired image portion. By irradiating light from the transparent plate side in a state where the sheet and the sheet are overlaid on the transparent plate and pressed, an ink exuding portion for the image portion and an ink non-exuding portion for the non-image portion are formed on the surface of the stamp substrate. In the stamp plate making apparatus for forming, a light source body movable substantially parallel to the transparent plate and a driving unit for moving the light source body are disposed below the transparent plate. Moving speed,
There is provided a speed control means for controlling a portion where the pressing force against the stamp substrate is weaker to be slower than other portions.

Thus, the moving speed of the light source can be controlled according to the magnitude of the pressing force on the stamp substrate, in other words, according to the degree of adhesion between the stamp substrate and the document sheet. There is an effect that the performance of the stamp surface which can be formed on the entire surface can be made uniform throughout. According to a second aspect of the present invention, in the plate-making apparatus according to the first aspect, the speed control means controls a moving speed at a substantially central portion in a longitudinal direction of the stamp substrate mounted on the transparent plate. The control is performed so as to be slower than the moving speed in the vicinity of both end portions of the stamp substrate.

In general, even when a substantially uniform pressing force acts on the upper surface of the stamp substrate, the transparent plate, which is the supporting portion of the stamp substrate, has a so-called simple support beam at both ends. The amount of deflection of the transparent plate corresponding to the substantially central portion increases, and the degree of adhesion between the stamp substrate and the document sheet at that location tends to be insufficient. Therefore, by uniformly controlling the movement speed at the substantially central portion in the longitudinal direction of the stamp substrate to be lower than the movement speed near the both end portions of the stamp substrate, the adhesion degree is insufficient at the insufficient portion. The advantage is that the sharpness of the stamp surface with respect to the stamp substrate can be supplemented.

According to a third aspect of the present invention, in the plate making apparatus according to the first or second aspect, a light reflector is added to the light source. Accordingly, since the light from the light source body is sequentially irradiated by the light reflector to a narrow range in the moving direction of the stamp substrate, it is possible to improve the uniformity of the performance effect of the stamp surface due to the fluctuation of the moving speed of the light source body. it can.

Further, according to a fourth aspect of the present invention, in the plate-making apparatus according to any one of the first to third aspects,
The driving unit is configured to move the light source linearly along the longitudinal direction of the stamp substrate, and the light source is formed in a linear shape perpendicular to the longitudinal direction of the stamp substrate. It is. As described above, it is considered that the fluctuation (deviation) of the pressing force is small in the short width direction having a dimension orthogonal to the longitudinal direction of the stamp substrate.
If the light source body and the reflector are formed in the longitudinal direction in the direction orthogonal to the longitudinal direction of the stamp substrate, substantially uniform light irradiation can be received from the light source body and the reflector along the width direction of the stamp substrate. This makes it possible to easily control light irradiation.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing a stamp unit.

FIG. 2 is a schematic side sectional view showing a stamp unit with a movable lid opened.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a functional block diagram of a control device.

5A is a perspective view of a stamp substrate, FIG. 5B is a cross-sectional view of a state in which an original sheet, a transparent sheet, and a stamp substrate are superposed, and FIG. 5C is a cross-sectional view showing a light irradiation state; ,
(D) is a sectional view of a state where the stamp substrate is separated from the transparent sheet.

FIG. 6 is a perspective view of the stamp in a plate-making finished state.

FIG. 7 is a diagram showing a change in a moving speed of a light source body.

[Explanation of symbols]

 Reference Signs List 8 outer lid 9 intermediate lid 10 middle lid 11 transparent plate 13 reflector 14 light source 15 driving means 21 image area 22 transparent sheet 23a non-ink bleeding part 24 ink bleeding part 25 stamp substrate 26 document sheet 36 guide shaft 39 rotation axis 40 drive motor 43 rack gear 44 rack 45 CPU

Claims (4)

[Claims] 1. A stamping substrate formed of a porous sheet having open cells and impregnated with stamp ink, and a light-transmitting original sheet having a desired image portion are overlaid on a transparent plate and pressed. In the state, by irradiating light from the transparent plate side, in the stamp plate making apparatus for forming an ink exuding portion for the image portion and an ink non-exuding portion for the non-image portion on the surface of the stamp substrate, Below the transparent plate, a light source that can move substantially parallel to the transparent plate,
A driving unit for moving the light source body, and a speed control unit for controlling the moving speed of the light source body in a portion where the pressing force against the stamp substrate is weaker than in other portions. A plate-making apparatus, characterized in that: 2. The speed control means according to claim 1, wherein a moving speed of the stamp substrate placed on the transparent plate at a substantially central portion in a longitudinal direction is lower than a moving speed near both end portions of the stamp substrate. 2. The plate making apparatus according to claim 1, wherein the control is performed in such a manner. 3. The plate making apparatus according to claim 1, wherein a light reflector is added to the light source body. 4. The driving means is configured to move the light source linearly along the longitudinal direction of the stamp substrate, and the light source is formed in a linear shape perpendicular to the longitudinal direction of the stamp substrate. The plate making device according to claim 1, wherein the plate making device is formed.