JPH0518860U - Stamp device - Google Patents

Abstract

(57) [Summary] [Purpose] It is not necessary to create a pressure plate with a shape that matches the shape of the transfer surface, and a single press plate can produce a good print image on any shape of the transfer surface. A stamping device in which the pressure plate can be used any number of times is provided. A thermal head 35 that forms a perforated image on the stencil sheet 20 and a stencil sheet 20 after the perforated image is formed.
And a pressure plate 3 for press-contacting the ink impregnated body 36, the pressure plate 3 is configured to be detachable from the apparatus, and
It is made of shape memory resin.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a stamp device using a stencil printing original plate.

[0002]

[Prior Art]

 Conventionally, a stamping device has been proposed that performs stencil printing using a stencil printing base paper that is formed by selectively perforating a sheet obtained by laminating a stretched thermoplastic synthetic resin film and a porous support. Has been done. Such a stamp device will be described with reference to FIG.

Inside the housing 39, the stencil printing base paper 20 is wound between a delivery roller 32 and a take-up roller 34, and the stencil printing base paper 20 delivered from the delivery roller 32 is a feed roller. It is configured so that it is sent by 33a and 33b and is wound by the winding roller 34. A thermal head 35 is provided between the delivery roller 32 and the take-up roller 34 in the transport path of the stencil sheet 20.

As the stencil printing base paper 20, for example, as shown in FIG. 4, a thermoplastic such as a stretched thin vinylidene chloride-vinyl chloride copolymer synthetic resin film or a polypropylene synthetic resin film having a thickness of about 5 to 12 μm is used. 8 to 12 g / m ^{2 of} resin film layer 21 and natural fiber such as Manila hemp or synthetic fiber such as rayon, vinylon, polyester, acrylonitrile, metal, glass fiber, etc. Those consisting of a degree of porous support layer 22 are used.

A handle 50 is slidably attached to the housing 39, and a pressure plate 37 and an ink impregnation body 36 are provided at the tip of the handle 50. As the ink impregnation body 36, any porous body capable of holding a large amount of ink can be used, but in consideration of pressure deformation and adhesion to the stencil printing plate, a rubber porous body is used. It is most preferred to use the body. The ink composition is preferably 17 parts by weight of carbon black, 68 parts by weight of synthetic resin varnish, 11 parts by weight of flaxseed oil varnish, and 4 parts by weight of liquid dryer. Further, the housing 39 is provided with an input device 31 for inputting characters to be printed.

The operation of the stamp device configured as described above will be described. The stencil printing base paper 20 sent from the sending roller 32 corresponds to the characters input from the input device 31 by the thermal head 35. Selective perforation is performed and the ink is impregnated to the lower side of the impregnated body 36. The perforated image is formed by instantaneous heat rupture, and the stencil printing base paper 20 needs to be tensioned. Therefore, the film is stretched by 2.5 times or more in the machine direction and the transverse direction, respectively. It is desirable to be covered. Then, by positioning the casing 39 on the transfer target and pressing the handle portion 50, the ink impregnated body 36 is pressed against the stencil printing base paper 20. Then, the ink in the ink impregnated body 36 passes through the perforated portion of the stencil printing base paper 20 by being pressed, and is transferred onto the transfer target to form an image.

[0007]

[Problems to be solved by the device]

 However, in the above stamp device, if printing is performed on a flat transfer object, no problem occurs, but when printing on a curved transfer object, the device must be rotated along the curved surface. Since printing cannot be performed, scratches, bleeding, crushing, etc. are likely to occur in the finished printed image. Therefore, in order to print well on a curved surface, it is necessary to change the pressure plate to a shape that matches the curved surface, but one pressure plate cannot handle any shape of curved surface. For a specific curved surface, a pressure plate having a shape corresponding to the curved surface must be created by a method such as cutting, which takes a lot of time and cost. In addition, if pressure plates of many shapes are made, much material is wasted in manufacturing the pressure plates.

The present invention has been made to solve the above-mentioned problems, and it is not necessary to form a pressure plate having a shape that matches the shape of the transfer surface, and one pressure plate can have any shape. It is an object of the present invention to provide a stamping device which can obtain a good printed image on a transfer surface and can use a pressure plate any number of times.

[0009]

[Means for Solving the Problems]

 To achieve this object, the stamping device of the present invention comprises a perforated image forming means for forming a perforated image on the stencil printing base paper and an ink impregnating body for press-contacting the stencil printed base paper after the perforated image formation. A pressure plate, the pressure plate being configured to be attachable to and detachable from the apparatus, and made of a shape memory resin.

[0010]

[Action]

 In the stamp device of the present invention having the above structure, a perforation image forming means for forming a perforation image on the stencil printing base paper, and a pressure plate for press-contacting the ink impregnated body to the stencil printing base paper after the perforation image formation. The pressure plate is removed from the apparatus, heated, pressed against the object to be transferred, and the like so that the shape of the pressure plate matches the shape of the object to be transferred. Then, a perforated image is formed on the stencil printing base paper by the perforated image forming means, the ink impregnated body is pressed against the perforated image portion with a pressure plate, and the image is transferred onto the transfer target.

[0011]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In this embodiment, the same parts as those in the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted. The pressure plate 3 in the stamp device of this embodiment is made of a shape memory resin and is detachably attached to the handle portion 50. First, the shape memory resin will be described in detail with reference to FIG.

The shape memory resin 10 is composed of two units, a fixed layer unit 11 and a reversible layer unit 12 that repeats solidification and softening (currently, the fixed layer unit melts at A ° C. or higher and is reversible. The layer unit softens and melts above B ° C., where A ° C.> B ° C.).

First, both the fixed layer unit and the reversible layer unit are molded in a molten state at a temperature of A ° C. or higher (FIG. 2 (a)), and the temperature is kept at B ° C. or lower while maintaining the processed shape. When lowered, both the fixed layer unit and the reversible layer unit are completely fixed, and the shape X is formed ((b) of the same figure). Next, when the temperature is raised to a temperature of B ° C. or higher and lower than A ° C., the fixed layer unit 11 does not change at all, but the reversible layer unit 12 softens, and when an external force is applied, the reversible layer unit 12 expands and contracts easily. It is possible to change the shape (Fig. (C)).

When an external force is applied to deform the shape X into the shape Y ((d) in the figure), and the temperature is lowered to less than B ° C. while maintaining the shape Y by applying an external force, the reversible layer unit 12 becomes The shape Y is formed by being fixed while expanding and contracting ((e) in the figure). After that, if the temperature is raised again to B ℃ or more and less than A ℃ without applying any external force and left as it is, the shape is recovered from the shape Y to the shape X by the expansion and contraction of the softened reversible layer unit. The shape X is formed again when the temperature drops below the temperature of ° C. The expansion / contraction rate at this time reaches 100 to 500%.

The fixed layer unit 11 is made of polyvinyl chloride, polycarbonate, polyethylene terephthalate, polystyrene, polyvinyl fluoride, etc., and the reversible layer unit 12 is made of polyethylene, polypropylene, polycaprolactone, polybutadiene, etc. It is desirable that the temperature at which the memory is used to recover the memory is a temperature at which it can be easily heated and is room temperature or higher, preferably around 60 to 80 ° C. This is because if the temperature at which the above-mentioned memory is regained is too high, it will be difficult to heat and the transferred material may be deformed by heat.

Next, the operation of the stamp device of this embodiment will be described with reference to FIG.

The thermoplastic resin film layer 21 of the stencil printing base paper 20 delivered from the delivery roller 32 is melted and perforated corresponding to the characters input from the input device 31 by the thermal head 35, and selectively. The ink is impregnated, and the ink is conveyed to a position below the ink impregnated body 36.

Next, the pressure plate 3 is removed from the handle portion 50, heated to 70 ° C., pressed against the printing surface of the transfer target 42, deformed into a desired shape, and cooled to 25 ° C. in that state. A pressure plate 3 having a desired shape is obtained.

Then, the pressure plate 3 is mounted again in the stamping device, the housing 39 is positioned on the transferred object 42, and the handle portion 50 is pushed down, so that the ink impregnated body 36 is pushed onto the stencil sheet 20. It is applied (FIG. 1 (a)). Then, the ink in the ink impregnated body 36 passes through the perforated portion of the stencil printing base paper 20 by the pressing force and is transferred onto the transfer target, forming an image 43 (FIG. 1 (b)). After stamping, the pressure plate 3 was taken out, heated again to 70 ° C, and left as it was without applying external force. When it was restored to its original shape, it was mounted in the device again, and it stamped well on a flat surface. It is possible to do.

By repeating the above series of operations once again, a sufficiently good printed image could be formed again on the transferred material 42 without any problems.

As is clear from the above description, since the stamp device of this embodiment uses the shape memory resin as the pressure plate 3, the pressure plate having a shape that matches the shape of the transfer surface is formed. Without doing so, it is possible to obtain a good printed image on the printed surface of any shape with the same pressure plate, and it is possible to deform and use the pressure plate many times.

The present invention is not limited to the embodiments described in detail above, and various modifications can be made without departing from the spirit of the invention. For example, if a resin having a low melting point is used, the shape cannot be recovered by heat, but it is possible to stamp an object having a more complicated shape than the shape memory resin of this embodiment.

[0024]

As is apparent from the above description, since the stamp device of the present invention uses the shape memory resin as the pressure plate, the pressure plate having a shape matching the shape of the transfer surface should be formed. Without using the same pressure plate, it is possible to obtain a good printed image on any surface to be printed, and it is possible to deform and use the pressure plate many times.

[Brief description of drawings]

FIG. 1A is a configuration diagram showing a stamp device during transfer. (B) is a block diagram showing the stamp device after transfer.

2A to 2E are explanatory views showing a shape memory resin.

FIG. 3 is a configuration diagram of a conventional stamp device.

FIG. 4 is a configuration diagram of a stencil printing base paper.

[Explanation of symbols]

 3 Pressurizing Plate 20 Stencil Printing Base Paper 35 Thermal Head 36 Ink Impregnation Body

Claims (1)

[Scope of utility model registration request] 1. A stamping apparatus comprising: a perforation image forming means for forming a perforation image on a stencil printing base paper; and a pressure plate for pressing an ink impregnated body onto the stencil printing base paper after the perforation image formation. The stamp device is characterized in that the pressure plate is configured to be detachable from the device and is made of a shape memory resin.