JPH05563A - Stamping device - Google Patents

Abstract

PURPOSE:To provide a stamping device capable of changing the size of an ink pad in accordance with the dimensions of a perforation image on a stencil sheet and thereby minimizing the wasteful use of the stencil sheet. CONSTITUTION:The size of an ink pad is selected by such sequential operation steps, that is, driving a size selection motor 87, subsequent rotation of a rotary shaft 85 through a motor pulley 88, a timing belt 90 and a pulley 89 and, in turn, the rotation of a rotating ink pad holding part 80.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stamp device.

[0002]

2. Description of the Related Art An example of a conventional stamp device will be described with reference to FIG.

Both ends of the stencil sheet 101 are wound around an original winding roll 102 and a take-up roll 103, and the stencil sheet 101 drawn out from the original winding roll 102 is disposed on the right side of the original winding roll 102. Head 104
And the platen 105, and is further wound around the winding roll 103 via the original winding side guide roll 106 and the winding side guide roll 107. Original roll side guide roll 1
06 and the winding side guide roll 107 are both stencil sheet 1
A brim corresponding to the width of 01 is formed at both ends to guide the stencil sheet 101 not to meander during transportation.

An ink pad holder 108 and an ink pad 114 are arranged between the original winding side guide roll 106 and the winding side guide roll 107, and the ink pad holder 108 is connected to a grip 110 by a shaft 109. There is. The ink pad holder 108 is pushed up by the spring force of the compression coil spring 112 arranged between the shaft 109 and the housing 111, and the collar 113 attached to the shaft 109 causes the ink pad holder 108 and the stencil sheet 101 to be separated from each other. It is held in a state where a certain gap is secured between the two.

The stencil sheet 101 is the original roll 10
2 is drawn out, a perforation image is formed by the thermal head 104, and the image is conveyed to a position facing the ink pad 114. Next, the grip 110 is pressed to bring the ink pad 114 into close contact with the stencil sheet 101 and the printing paper, and printing is performed. After printing, the stencil sheet 101 is wound on a winding roll 103.

[0006]

However, in the above-mentioned stamping apparatus, since the area of the ink pad is constant, even when the area of the formed perforated image is small, the stamped area of the stencil sheet is always covered. Ink from the ink pad adheres. Therefore, regardless of the area of the punched image, a certain amount of the stencil sheet corresponding to the area of the ink pad must be always wound up, and the stencil sheet is wasted.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a stamping device capable of saving stencil sheet.

[0008]

In order to achieve this object, the stamp device of the present invention comprises a switching means for selectively changing the area of the portion of the ink pad facing the stencil sheet.

[0009]

In the stamp device of the present invention having the above-described structure, the area of the ink pad facing the stencil sheet is selectively changed by the switching means to switch to the ink pad according to the punched image formed. The ink of the ink pad does not adhere to the non-perforated image portion of the stencil sheet. Therefore, the winding amount of the stencil sheet can be minimized, waste can be eliminated, and the stencil sheet can be saved.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram of a stamping device using a heat-sensitive stencil sheet which is a first embodiment of the present invention.

Both ends of the heat-sensitive stencil sheet 1 are wound around a master roll 2 and a take-up roll 3, respectively. The heat-sensitive stencil sheet 1 pulled out from the original winding roll 2 is conveyed between the thermal head 4 and the platen 5 arranged on the right side of the original winding roll 2, and further, the original winding side guide roll 6 and the winding side. It is wound around the winding roll 3 via the guide roll 7. Original winding side guide roll 6 and winding side guide roll 7
In both cases, a brim corresponding to the width of the heat-sensitive stencil sheet 1 is formed at both ends, and guides the heat-sensitive stencil sheet 1 so as not to meander during transportation.

An ink pad switching unit 8 is arranged between the original winding side guide roll 6 and the winding side guide roll 7. The ink pad switching unit 8 is a stamp holder 84, a rotary shaft 85 rotatably supported by the stamp holder 84 via a bearing 86, and a pulley 89 at an end thereof, and a four-sided ink fixed to the rotary shaft 85. Rotating ink pad holder 80 having a pad holding surface
And the LL ink pad 81 and the L ink pad 8 fixed to the four holding surfaces of the rotating ink pad holding portion 80.
2, M ink pad 83, S ink pad (not shown)
And a size selection motor 87 for selectively rotating and moving each ink pad to a position facing the ink application surface of the heat-sensitive stencil sheet 1, and directly connected to the size selection motor 87, and to a pulley 89 by a timing belt 90. It consists of a motor pulley 88 for transmitting power.

The LL ink pads 81 to S ink pads are LL size to S size ink pads, respectively. The ink pad switching unit 8 is connected to the grip 10 by the shaft 9, and the ink pad switching unit 8 is pushed up by the spring force of the compression coil spring 12 arranged between the shaft 9 and the housing 11. A collar 13 attached to the shaft 9 holds the ink pad switching unit 8 and the heat-sensitive stencil sheet 1 in a state in which a certain gap is secured.

The heat-sensitive stencil sheet 1 will be described with reference to FIG.
, The adhesive layer 51, and the porous support body 52, and the thermoplastic film 50 and the porous support body 52 are bonded by the adhesive layer 51. Thermoplastic film 5
In the present embodiment, 0 is a polyethylene terephthalate film having a thickness of 2 μ (hereinafter abbreviated as PET film), but other examples include polypropylene and vinylidene chloride.
Examples thereof include films of vinyl chloride copolymer and the like.

The thickness of the PET film is 1 μ to 4
μ is preferred. If it is less than 1 μm, the manufacturing cost is high and the strength is weak, which is not practical. On the other hand, if the thickness is 4 μm or more, a general thermal head having a rating of about 50 mJ / mm ² is too thick to punch.

The porous support 52 is, for example, a porous thin paper mainly made of natural fibers such as Manila hemp, kozo, mitsumata, synthetic fibers such as polyethylene terephthalate, polyvinyl alcohol and polyacrylonitrile, and semi-synthetic fibers such as rayon. Used.

Next, the operation will be described with reference to FIGS.

First, the heat-sensitive stencil sheet 1 is pulled out from the original roll 2, pressed against the platen roller 5 by the thermal head 4, and the surface of the thermoplastic film 50 of the heat-sensitive stencil sheet 1 is selectively heated according to the image information. By fusing, a perforated image is formed on the heat-sensitive stencil sheet 1 to make a plate.

Here, the ink pad size is selected according to the size of the image formed by the user. The ink pad size is selected by driving the size selection motor 87 to rotate the rotary shaft 85 via the motor pulley 88, the timing belt 90, and the pulley 89, and rotate the rotary ink pad holder 80. For example, if the formed image is of LL size, the LL ink pad 8
1 is made to face the heat-sensitive stencil sheet 1, and its operation is stopped. Next, the heat-sensitive stencil sheet 1 on which the punched image is formed is conveyed until the leading end of the punched image reaches the end of the ink pad in the winding direction. Place the device on the printing paper in this state,
It has a grip 10 connected to the ink pad switching unit 8 and presses it against the printing paper to perform printing.

When the same stencil original is repeatedly used, this state is used as it is, and when the stencil original is changed, the heat-sensitive stencil sheet 1 is wound around the take-up roller 3 via the guide roller 7, and the above-mentioned operation is similarly performed. ..

Next, a second embodiment will be described.

FIG. 4 is an overall configuration diagram of the stamp device of the second embodiment.

The main structure is the same as that of the first embodiment, and the description thereof is omitted, but an ink pad transport unit 200 described later is arranged between the original winding side guide roll 6 and the winding side guide roll 7. The ink pad transport unit 200 is gripped by the shaft 9 as in the first embodiment.
The ink pad transfer unit 200 is pushed up by the spring force of the compression coil spring 12 which is connected to the shaft 0 and is arranged between the shaft 9 and the housing 11. The collar 13 attached to the shaft 9 holds the ink pad transport unit 200 and the heat-sensitive stencil sheet 1 with a certain gap secured therebetween.

The ink pad transport unit 200 includes an ink pad holder 201, and a transport drive shaft 202 and a drive shaft 203 rotatably arranged on the ink pad holder 201.
A conveyor belt 204 hung between the conveyor drive shafts 202 and 203; an ink pad 205 fixed on the conveyor belt 204; and a conveyor drive shaft 202 that drives the conveyor belt 204 to convey the ink pad 205. It is composed of a conveyance motor (not shown) that makes the length of the raw paper conveyance direction variable.

The operation will be described. After the perforated image is formed on the heat-sensitive stencil sheet 1 as in the first embodiment, the ink pad 205 is transported by the transport motor to the transport drive shaft 202.
Is rotated, the conveyor belt 204 is rotated to convey the formed perforated image to the position facing the heat-sensitive stencil sheet 1 by the length in the conveying direction, and then the heat-sensitive stencil sheet 1 is conveyed.
The leading edge of the punched image is conveyed until it matches the leading edge of the facing ink pad 205.

In this state, the apparatus is placed on the printing paper and the grip 10 is pressed to perform printing.

As is clear from the above description,
According to the stamp device of the present embodiment, since the ink pad having the length of the perforated image to be formed is used, the ink does not adhere to the non-perforated image portion, and the take-up amount of the heat-sensitive stencil sheet is required to be minimum. The heat-sensitive stencil sheet can be saved by eliminating waste.

The present invention is not limited to the embodiments described in detail above, and can be carried out in various modes without departing from the spirit of the present invention.

[0030]

As is apparent from the above detailed description, according to the stamping device of the present invention, the winding amount of the stencil sheet can be minimized to eliminate waste and save the stencil sheet. can do.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a stamp device according to a first embodiment.

FIG. 2 is a perspective view of a transport system of the stamp device according to the first embodiment.

FIG. 3 is a sectional view of a heat-sensitive stencil sheet.

FIG. 4 is an overall configuration diagram of a stamp device according to a second embodiment.

FIG. 5 is an overall configuration diagram of a conventional stamp device.

[Explanation of symbols]

 1 Thermal Sensitive Stencil Paper 8 Ink Pad Switching Unit 80 Rotating Ink Pad Holding Unit 81 LL Ink Pad 82 L Ink Pad 83 M Ink Pad 200 Ink Pad Conveying Unit 204 Conveying Belt 205 Ink Pad

Claims (1)

Claim: What is claimed is: 1. An image forming unit for forming a perforated image on a stencil sheet, and a pressing unit for pressing an ink pad on a printing sheet through the stencil sheet to transfer the perforated image to the printing sheet. A stamp device comprising: a stamp device including switching means for selectively changing an area of a portion of the ink pad facing the stencil sheet.