JPH09109530A - Stencil printing original plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stencil printing original plate wherein air entered from a pierced hole in push sealing is easy to flee, and air penetrated into an impregnated material is difficult to stay. SOLUTION: A stamp material 1 is composed of a holding part 2, a stamp part 3 connected thereto, a skirt member 6 covering the outer peripheral side of the stamp part 3, etc. The stamp part 3 is composed of a rectangular parallelpiped like hollow synthetic resin-made base member 26 which is equipped with a shallow recessed part 25 on an under surface side, an impregnated material 27 which is fitted to the recessed part 25 of the base member 26 and impregnated with an oil-based ink, and thermosensitive stencil original paper 28 which covers the under surface of the impregnated material 27 and the outer peripheral side of the base member 26 and is bonded to the outer peripheral surface of the base member 26 with an adhesive 29. The impregnated material 27 is composed of a first impregnated layer 27a of 50-200kg/m<3> density provided to the thermosensitive stencil original paper 28 side, and a second impregnated layer 27b of 200-700kg/m<3> dencity provided to the base member 26 side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil printing plate used in a stamping device, and more particularly to a stencil printing plate having an ink impregnated impregnating body and a printing surface made of a heat-sensitive stencil sheet. Regarding the original plate.

[0002]

2. Description of the Related Art Heretofore, various stamps for printing a company name, an address, and other various character strings on the surface of a sheet, in which a stamp face portion is made of rubber, have been used. This type of stamp is expensive because the stamp is usually created individually according to the order, and the period from order to acquisition is long.

On the other hand, conventionally, a desired pattern can be pierced by irradiating infrared rays or a thermal head, and by penetrating ink from a group of perforations, it can be used for printing various patterns such as character strings, figures, and marks. Heat-sensitive stencil paper has been put to practical use.

The applicant of the present application has disclosed in Japanese Utility Model Laid-Open Publication No. Hei 5-74833 a stencil printing plate mainly comprising the heat-sensitive stencil sheet and an impregnated body impregnated with ink. A stencil printing plate suitable for making a stamp instead of a rubber stamp was proposed.

[0005] This stencil printing plate is obtained by adhering an impregnated body impregnated with ink to a synthetic resin film and a frame surrounding the impregnated body. The stencil sheet is bonded.

When the stencil printing plate is applied to a stamp, the stencil printing plate is adhered to the lower surface of the base of the stamp member having a grip portion via a cushioning material, and the heat-sensitive stencil sheet is irradiated with infrared rays or If a pattern such as a desired character string is punched by a thermal head, a stamp capable of printing the pattern such as the desired character string on a paper sheet many times can be obtained, as in a normal stamp.

[0007] Further, the applicant of the present invention has disclosed in
In Japanese Patent Publication No. 78, a stamping device comprising a stamp body and a heat punching device for forming a hole in the stamp face of the stamp body was proposed.

[0008] The stamp body includes a gripping portion, a main body case, a supply reel and a take-up reel which are provided in the main body case, and supply and take up a tape-shaped heat-sensitive stencil sheet.
An ink pad for supplying ink to the perforated heat-sensitive stencil sheet.

The heating perforation apparatus includes a perforation mounting portion for detachably mounting a stamp body, a feed mechanism for feeding a thermosensitive stencil sheet of the stamp body, and a perforation in the thermosensitive stencil sheet of the stamp body. It is composed of a thermal head, a keyboard for inputting characters and symbols, and a control device for controlling a feed mechanism and a thermal head so as to pierce a heat-sensitive stencil sheet with a character string input based on input data. ing.

According to the stamping apparatus, a tape-shaped heat-sensitive stencil sheet is provided on the stamp body, and a desired character string pattern can be perforated on the stamp face of the stamp body by the heating perforating apparatus. Therefore, different patterns can be perforated on the stamp surface, and at the time of printing, ink is automatically supplied from the ink pad inside the stamp body to the stamp surface, so that external ink is applied to the stamp surface. Can be printed without the need.

[0011]

The ink impregnated body (ink pad) used for the stencil printing plate or the improved stamp body is formed of a foam such as a synthetic resin material, and the foam is present. It had a single layer structure with a constant density. With this impregnated body, the volume of ink that can be impregnated is large when the foaming density is low, and conversely, when the foaming density is high, the capacity of the ink is small, but the force for retaining the ink (ink holding capacity) is large. You can

There is a strong demand for the stamp body to have print quality, durability, simplicity, and a small size that are comparable to those of a stamp having a stamp surface made of rubber. Regarding the durability among them, in order to secure the durability at the time of imprinting (the number of imprintable times) on a stamp body with a limited size, it is necessary to use an impregnating body with a large ink impregnation capacity as the impregnating body, Coarse foamed (low density) impregnants are commonly used. However, this has caused the following problems.

First, when the thermal head is pressed by the thermal head against the printing surface to perform the perforation, the impregnated body having coarse foam has less elasticity, so that the heat-sensitive stencil sheet pressed by the thermal head causes deformation. And distortion was apt to occur, resulting in poor drilling. Further, even at the time of printing, since the impregnated body has no stiffness, the heat-sensitive stencil sheet constituting the printing surface is likely to have wrinkles, which adversely affects the printing quality.

Further, if the foaming is rough, the surface of the heat-sensitive stencil sheet covering the surface of the impregnated body becomes uneven, so that the smoothness is deteriorated and the thermal head cannot contact the stencil sheet uniformly. For this reason, the punched state is likely to vary, and as a result, the ink outflow amount at the time of printing also varies, which deteriorates the print quality.

If the original plate for stencil printing is left in a state of being impregnated with the ink close to the saturated state, the impregnated body with rough foaming has a low ink holding ability, so that the ink is unintentionally ejected from the perforations in the printing surface. There was a risk that it would leak into the environment and pollute the work environment. On the contrary, after a certain amount of ink was used for printing, the supply of ink to the printing surface was rapidly slowed, although the ink remained in the impregnated body. In other words, the use efficiency of the impregnated ink is poor and the running cost is high.

Therefore, the impregnated body has a two-layer structure composed of a portion having a high foaming density and a portion having a high foaming density, and the portion having a high foaming density is arranged on the heat-sensitive stencil sheet side to solve the above problems. In addition, the ink holding ability was able to be increased.

However, the following problems also occur with the above configuration. That is, air is introduced into the impregnated body through the perforations formed in the heat-sensitive stencil sheet after the stamp printing is performed with the stamp body. This air expands due to changes in the ambient temperature and tries to escape to the outside, but a foam having a high foaming density is arranged on the heat-sensitive stencil sheet side, and since the foam and the heat-sensitive stencil sheet have good adhesion, It is difficult to escape from the perforations of the heat-sensitive stencil sheet. In addition, when air escapes from the perforations, the ink also flows out, which causes a problem of soiling the surface of the heat-sensitive stencil sheet.

Furthermore, the air that has entered is likely to accumulate in the portion of the impregnated body having a low foaming density, and the accumulated air is
Since it is difficult to escape from the perforations of the heat-sensitive stencil paper,
It will escape from the grip part side. At this time, the ink flows out, which causes problems such as soiling the user's hand and soiling the stamp face portion.

The present invention has been made to solve the above-mentioned problems, and is for stencil printing in which the air that has entered through the perforations during press stamping easily escapes, and the air that has entered the inside of the impregnated body is difficult to stay. The purpose is to provide the original plate.

[0020]

In order to achieve this object, a stencil printing plate according to claim 1 is fixed to a lower surface of a base member which can be connected to a holding portion for holding by hand. A stencil printing plate comprising an impregnated body which has been impregnated with ink and a heat-sensitive stencil sheet which fixedly covers the surface of the impregnated body and constitutes a stamp surface portion, wherein the density of the impregnated body is 50 to 2
It is 00 Kg / m ³ .

In the stencil printing plate having the above-mentioned structure, a large number of perforations having a desired pattern are formed in advance on the heat-sensitive stencil sheet forming the stamp surface portion, and when the grip portion is gripped and the stamp surface portion is pressed against the surface of the sheet. Since the ink in the ink body exudes from many perforations, a desired pattern can be printed on the surface of the paper. At the time of this imprinting, air enters the impregnated body through the perforations, but the air can easily escape from the perforations to the outside.

The stencil printing plate of claim 2 is
It has the same constitution as the stencil printing plate according to claim 1, but the impregnated body further has a constitution of at least two layers having different densities, and the density is 50 to 200 on the heat-sensitive stencil sheet side.
A low Kg / m ³ layer is provided, and a high density layer is provided on the opposite side.

With this structure, the air that has entered at the time of stamping does not easily stay inside the impregnated body and can easily escape from the perforations.

The stencil printing plate of claim 2 is
The stencil printing plate according to claim 1, which has the same structure as that of the stencil printing plate, but further has an impregnated body arranged on the heat-sensitive stencil sheet side and having a low density of 50 to 200 kg / m ³ , and a heat-sensitive stencil sheet side. The density is 200-700Kg /
It is composed of two layers, one with a high m ³ layer.

With this structure, the air that has entered at the time of the imprinting is difficult to stay inside the impregnated body, can easily escape from the perforations, and an appropriate amount of ink can be impregnated.

[0026]

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

As shown in FIGS. 1 to 4, a stamp body 1 having a master plate for stencil printing according to the present embodiment is fixedly connected to a grip portion 2 for gripping with a hand. The stamp portion 3 includes a skirt member 6 that covers the outer peripheral side of the stamp portion 3, and a protective cap 7 that is detachably attached to the stamp portion 3.

The grip portion 2 is formed of a rectangular parallelepiped hollow body made of a metal or a synthetic resin material with an open lower end, and a concave portion 11 for sticking the label 10 is formed on the top of the hollow portion. A pair of engaging claws 14 projecting downward are provided on the lower ends of the front wall 12 and the rear wall 13, respectively. In addition, on the lower part of the front wall 12 and the rear wall 13 of the gripper 2,
A guide groove 15 is formed, an engagement recess 16 is formed in the front wall 12, an engagement hole 18 is formed in the left side wall 17, and a central portion of a lower surface of the upper wall 19 inside the grip portion 2 is provided. A spring support 20 is formed.

The stamp part 3 is composed of a stamp part body 4
The stamp portion main body 4 is inserted and fixed from below, covers the upper approximately 2/3 portion of the outer periphery of the stamp portion main body 4, and engages with the four engaging claws 14 of the grip portion 2 to hold the grip portion. 2
And an outer peripheral holding member 5 fixed to the outer periphery. still,
This stamp portion main body 4 corresponds to the stencil printing original plate of the present invention.

The stamp body 4 has a shallow concave portion 25 on the lower surface side, and is a rectangular parallelepiped hollow hollow synthetic resin base member 2.
6, an impregnated body 27 mounted in the recess 25 of the base member 26 and impregnated with the oil-based ink, an outer periphery of the base member 26 with an adhesive 29 that covers the lower surface of the impregnated body 27 and the outer peripheral side of the base member 26. And a heat-sensitive stencil sheet 28 adhered to the surface. The impregnated body 27 may be bonded to the concave portion 25 of the base member 26 with an adhesive or the like.

The base member 26 is made of a synthetic resin material (for example, vinyl chloride, polypropylene, polyethylene, polyacetal, polyethylene terephthalate, etc.) or a metal material having excellent oil resistance because it is in contact with oil-based ink. By mounting the impregnation body 27 in the recess 25 of 26, it is possible to prevent the displacement of the impregnation body 27 and prevent the outflow of ink from the impregnation body 27.

The impregnated body 27 is made of an elastic foam or non-woven fabric of a synthetic resin material (for example, polyethylene, polypropylene, polyethylene terephthalate, polyurethane, acrylonitrile butadiene rubber, etc.),
It has a two-layer structure with different densities. The first impregnation layer 27a having a low density is provided on the heat-sensitive stencil sheet 28 side, and the second impregnation layer 27b having a high density is provided on the concave portion 25 side of the base member 26. The respective densities differ depending on the type of ink to be impregnated, but the first impregnation layer 27a has a density of 50 to 200 kg /
It is suitable that m ³ and the second impregnated layer 27 b are about 200 to 700 kg / m ³ . However, the density of the second impregnated layer 27b is selected to be higher than the density of the first impregnated layer 27a.

When the density of the first impregnated layer 27a is less than 50 kg / m ³ , when forming a large number of perforations in the heat-sensitive stencil sheet 28, the heat-sensitive stencil is pressed by the thermal head 90 which will be described later due to its low elasticity. Deflection and distortion are likely to occur in the base paper 28, resulting in defective punching. Further, even at the time of printing, since the impregnated body 27 has no stiffness, the heat-sensitive stencil sheet 28 constituting the printing surface is easily wrinkled, which adversely affects the printing quality.
When the stamp body 1 is placed vertically or horizontally, the ink is deviated and blurring occurs at the time of printing.

The density of the first impregnation layer 27a is 200 kg.
/ M ³ is larger than the impregnated body 27 and heat-sensitive stencil sheet 2
Adhesion with 8 is good, and the air that entered when pressing the seal was
It is difficult to escape from the perforations, and when the ink escapes, the ink flows out, and the stamp face portion 33 of the heat-sensitive stencil sheet 28 is soiled.
Therefore, the density of the first impregnation layer 27a is 50 to 200 kg / m ³
A degree is desirable.

On the other hand, the density of the second impregnation layer 27b is 200 kg.
If it is less than / m ^3, the air that has entered through the perforations during press marking tends to accumulate between the base member 26 and the second impregnated layer 27b,
When the accumulated air expands, the first impregnation layer 27a is pressed against the heat-sensitive stencil sheet 28 through the second impregnation layer 27b, and the ink flows out from the perforations to stain the stamp face portion 33. When the density of the second impregnated layer 27b is less than 700 kg / m ³ , the second impregnated layer 27b is hardly deformed at the time of pressing, the ink impregnation amount is insufficient, and the imprint is imprinted. Therefore,
The density of the second impregnated layer 27b is preferably about 200 to 700 kg / m ³ .

It should be noted that the impregnated body 27 does not have a two-layer structure, and is not shown in FIG.
As shown in FIG. 7, you may comprise only the 1st impregnation layer 27a. The density of the impregnated body 27a at this time is 50 to 50 as described above.
About 200 kg / m ³ is desirable.

The impregnated body 27 is impregnated with oil-based ink in a saturated state, and when pressure is applied to the impregnated body 27, the ink oozes out. Also, the first
The impregnated layer and the second impregnated layer are partially adhered by an adhesive or the like. Incidentally, the first impregnated layer and the second impregnated layer may be adhered by heat welding, or they may not be adhered,
It is also possible to perform processing such as providing unevenness on the bonding surface in each layer so that misalignment does not occur in each layer.

The heat-sensitive stencil sheet 28, as shown in FIG. 6, has a thermoplastic film 30, a porous support 31 and
And an adhesive layer 32 for adhering them. The thermoplastic film 30 is made of a thermoplastic synthetic resin material (for example, polyethylene terephthalate, polypropylene, or vinylidene chloride) having a thickness of 1 to 4 μm, preferably 2 μm.
(A vinyl chloride copolymer).

Those having a thickness of less than 1 μm are impractical because of their high production cost, low strength and lack of practicality.
Those having a thickness of 4 .mu.m or more cannot be perforated by a general thermal head having a rated output of about 50 to 300 mJ / mm @ 2 because they are too thick.

The porous support 31 is made of natural fibers (for example, Manila hemp, crocodile, Mitsumata, etc.), synthetic fibers (for example, polyethylene terephthalate, polyvinyl alcohol, polyacrylonitrile, etc.), or semi-synthetic fibers such as rayon. The main material is a porous thin paper.

As shown in FIGS. 5 and 7, with the base member 26 turned upside down, the impregnating body 27 is mounted in the recess 25, and the impregnating body 27 is impregnated with the oil-based ink. The heat-sensitive stencil sheet 28 is covered from above 27 so that the porous support 31 is on the impregnated body 27 side, and the heat-sensitive stencil sheet 28 is brought into close contact with the surface of the impregnated body 27. The outer peripheral side portion is tightly folded on the outer peripheral surface of the base member 26 and adhered by the adhesive layer 29 to form the stamp portion main body 4 shown in FIG. 7.

The portion of the heat-sensitive stencil sheet 28 that is in close contact with the surface of the impregnated body 27 (the lower surface in FIG. 5) constitutes the stamp surface portion 33. As described above, since the outer peripheral portion of the heat-sensitive stencil sheet 28 is adhered to the outer peripheral surface of the base member 26, the stamp surface portion 33 covering almost the entire lower surface of the stamp portion 3 is adopted.
Could be formed. As a result, positioning for printing is simplified.

The outer peripheral portion of the heat-sensitive stencil sheet 28 is
In order to adhere to the outer peripheral surface of the base member 26, heat-sensitive stencil paper 2
8, an adhesive layer 29 may be previously formed on the outer peripheral surface of the base member 26, or the adhesive layer 29 may be formed on the outer peripheral surface of the base member 26 in advance, or a heat-sensitive stencil Base paper 28
The adhesive layer 2 is applied to both the outer peripheral portion of the base member 26 and the outer peripheral surface of the base member 26.
9 may be formed in advance.

As shown in FIGS. 2 to 4, the outer peripheral holding member 5 includes a peripheral wall portion 34 having a rectangular shape in plan view to which the stamp portion main body 4 is adhered so as to be fitted therein, an upper wall portion 35, and an upper wall portion 35. Wall 35
And a pair of left and right engaging wall portions 36 projecting from the predetermined height. An engagement hole 37 corresponding to the four engagement claws 14 of the grip portion 2 is formed in the pair of left and right engagement wall portions 36, and the pair of left and right engagement wall portions 36 are provided on the skirt member 6. The four engaging claws 14 are inserted into the pair of left and right rectangular holes 42 of the wall 41 so as to be slidable vertically from below, and the four engaging claws 14 are engaged with the four engaging holes 37 of the engaging wall 36 from above. The outer peripheral holding member 5 is fixed to the grip 2 by bringing the upper end of the engaging wall 36 into contact with the lower end of the grip 2.

As shown in FIGS. 2 to 4, the skirt member 6 has an outer peripheral wall portion 40 of a rectangular shape in plan view in which the outer peripheral wall portion 34 of the outer peripheral holding member 5 is slidably fitted in the vertical direction.
An upper wall portion 41 located above the upper wall portion 35 of the outer peripheral holding member 5 at the upper end thereof, and holding the upper wall portion 41 by projecting upward from the center of the upper wall portion 41 by a predetermined height. It comprises a portal 43 inserted into the section 2 and a spring support 45 projecting from the center of the upper end of the portal 43.

Below the left and right walls of the gate 43,
A guide hole 44 is formed at a position in the front-rear direction corresponding to the guide hole 18 so as to penetrate both wall portions.

A compression spring 21 for urging the skirt member 6 downward is attached to the grip portion 2 on the spring support portion 20 of the grip portion 2 and the spring support portion 45 of the skirt member 6. 6 is configured to be movable up and down over a first position shown in FIGS. 3 and 4, a second position shown in FIG. 9, and a third position shown in FIG. 8, and the skirt member 6 is constituted by a spring 21. It is biased towards the first position. The lower end of the center of the four surfaces of the outer peripheral wall 40 of the skirt member 6 is partially cut away for attaching and detaching the protective cap 7 and positioning the stamp face portion 33.

In the first position, the upper wall portion 41 of the skirt member 6 contacts the upper wall portion 35 of the outer peripheral holding member 5, and the lower end of the skirt member 6 projects lower than the stamp face portion 33. At the second position, the upper wall portion 41 of the skirt member 6 is
When the lower end of the skirt member 6 is located at the same level as the stamp face portion 33 and is located between the upper wall portion 35 of the outer peripheral holding member 5 and the lower end of the grip portion 2, the skirt member 6
The upper wall portion 41 is in contact with the lower end of the grip portion 2, and the lower end of the skirt member 6 is located above the stamp surface portion 33. still,
It is desirable that the stroke of the skirt member 6 from the first position to the second position be set to about 5 mm.

The protective cap 7 is attached to the stamp body 4
The outer peripheral wall portion 48 is formed in the same shape as the outer peripheral wall 34 of the outer peripheral holding member 5 in a plan view, and the protective cap 7 is made of a skirt. It is supported by being fitted inside the outer peripheral wall portion 40 of the member 6.

As shown in FIGS. 3 and 4, the protective cap 7
In the state in which the outer peripheral wall 34 is attached, the upper end thereof abuts against the lower end of the outer peripheral wall 34, and a small gap is left between the protective cap 7 and the stamp face 33. It is supported by a frictional force between the outer peripheral wall portion 40 and the inner peripheral surface. Therefore, even if the grip portion 2 is pushed downward with the protective cap 7 attached, the gap is maintained by the contact between the upper end of the protective cap 7 and the lower end of the outer peripheral wall 34, so that the protective cap Ink does not adhere to 7.

For example, as shown in FIG. 10, the stamp surface 33 has a pattern composed of a mirror character string of "○○○ Kogyo Co., Ltd." and a six-fold rectangular frame surrounding the outside. A large number of perforations (dot pattern perforations) are formed by a thermal head of a thermal printer not shown in FIG.
Since a stamp body that can print a character string of "○○○○ Kogyo Co., Ltd." which is a mirror image of the pattern and a six-fold rectangular frame is configured, it is the same as a stamp with a normal rubber stamp surface. For example, the pattern can be printed about 1000 times. In addition, it is a matter of course that the holes can be formed by infrared irradiation in addition to the holes formed by the thermal head.

When punching the heat-sensitive stencil sheet 28 which constitutes the stamp surface portion 33, the stamp body 1 is set in the punching mounting portion 71 of the heating punching device 50 described later, and the guide bar 83 of the device is set. , The guide holes 18, 44, 44 are inserted to hold the skirt member 6 in the third position for perforation, and when not in use, the protective cap 7 is attached, and the skirt member 6 is attached as shown in FIGS. As shown in FIG. 3, the skirt member 6 is held at the first position, and at the time of printing, the protective cap 7 is removed, the skirt member 6 is held at the first position, and the position on the surface of the paper to be printed is to be changed. By positioning the skirt member 6 at the position of the stamp surface 33 of the stamp portion 3, the grip portion 2 is pressed downward to print as shown in FIG.

Next, the heating punching device 50 for punching the stamp 1 will be described.

As shown in FIGS. 11 to 16, the heat punching device 50 includes a body frame 51, a keyboard 52 and a liquid crystal display 5 provided on the front portion of the body frame 51.
3, a heat punching portion 54 provided at the rear portion of the body frame 51, a printing portion 140 provided adjacent to the heat punching device 54, a control unit provided in the body frame 51, and the like. There is.

The keyboard 52 includes a character / symbol key 56 including a plurality of character keys which also function as a kana key, an alphabetic key, and a plurality of symbol keys, and various function keys (cursor movement key 57, execution key 58, line feed key 5).
9, Confirm / End key 60, Cancel key 61, Delete key 6
2, a shift key 63, a small letter switch 64, a character type setting switch 65, a punching switch 66, etc.) and a main switch 67.

The liquid crystal display 53 is configured to display a plurality of lines of character strings corresponding to a pattern to be printed on the stamp body 1.

Next, the heating hole 54 will be described.

As shown in FIGS. 13 to 16, the heating perforation portion 54 has a sub-frame 70, a perforation attachment portion 71 for detachably attaching the stamp body 1, and a perforation attachment portion 71. The stamp surface portion 33 of the mounted stamp body 1 is provided with a heating punching mechanism 72 for punching in a dodd shape.

Explaining the perforating mounting portion 71, as shown in FIG. 14, the right side wall 7 of the sub-frame 70 is shown.
3, an opening 74 having substantially the same shape as the side surface of the lower half of the stamp body 1 having the maximum width in the front-rear direction of the stamp portion 3 is formed. A sector gear 76 is fixed to an opening / closing door 75 that opens and closes the opening 74. Provided with an opening / closing door 75 and a sector gear 76
Is rotatably attached to the right side wall 73 by a pivot 77 that is oriented in the left-right direction in FIG. A pair of front and rear guide members 78, 7 are provided on the upper portion of the sub-frame 70.
9 are provided, and at the lower ends of these guide members 78, 79, guide portions 80 extending horizontally and in parallel in the left-right direction are formed to face each other.

The guide bar 83 fixed to the guide member 78 on the front side is arranged at an intermediate position between the guide members 78 and 79, and on the upper surface of the right end portion of the guide bar 83 as shown in FIGS. 14 and 16. , Taper surface 84 inclined downward to the right
Further, a locking portion 85 for restricting the left limit position of the stamp body 1 is formed at the left end portion of the guide bar 83. When the stamp body 1 is mounted on the perforation mounting portion 71, the guide bar 83 is inserted through the guide holes 18, 44, 44 of the stamp body 1, whereby the skirt member 6 is It is held in the raised state to the third position shown in FIG.

The heating and punching mechanism 72 will be described. As shown in FIGS. 13 to 16, the punching mounting portion 7 is used.
1, a guide rod 88 extending in the left-right direction for guiding the carriage 87 over the right end wall 73 and the left end wall 86 of the sub-frame 70, and the carriage 87 is guided and mounted on the carriage 87. A head switching rod 89 extending in the left-right direction for operating a cam body 91 for switching the position of the thermal head 90 is mounted. The cam body 91 is mounted on the head switching rod 89 so as to be non-rotatable and slidable in the axial direction. Have been.

The carriage 87 has a guide rod 88.
The head 87 and the head switching rod 89 are movably supported in the left-right direction. At the front end of the carriage 87, a rack 92 having a predetermined length is formed over its entire length.

A cam contact plate 93 is attached to the carriage 87.
And a head heat radiating plate 94 are attached to the head heat radiating plate 94 so as to be swingable up and down by a support shaft 95 oriented in the front and rear direction.
The thermal head 90 is fixed, and the head radiating plate 94
A spring 97 mounted on a pin 96 fixed thereto.
Thereby, the cam contact plate 93 is elastically urged upward.

The cam body 91 is formed in an elliptical shape and is brought into contact with the lower surface of the cam contact plate 93. When the head switching rod 89 is rotated to bring the cam body 91 into a horizontal posture, the thermal head 90 is When the thermal head 90 is released downward together with the head heat dissipation plate 94 and the cam body 91 is placed in the upright posture, the thermal head 90 swings upward through the cam contact plate 93 and the spring 97 to switch to the punching position. .

A gear 98 meshing with the sector gear 76 is provided outside the right end wall 73 of the sub-frame 70 at the right end of the head switching rod 89.
When the door 5 is opened, the cam body 91 is in the horizontal posture, and when the door 75 is closed, the cam body 91 is switched to the vertical posture.

On the front wall 99 of the sub-frame 70, a stepping motor 100 for driving the carriage 87,
A drive gear 101 meshed with the rack 92 and a reduction gear mechanism 107 for transmitting rotation of the output gear 102 of the output shaft of the stepping motor 100 to the drive gear 101 are additionally provided. Therefore, since the rotational driving force of the stepping motor 100 is transmitted to the drive gear 101 at a reduced speed, the carriage 87 can be driven to move in the left-right direction by the stepping motor 100.

The thermal head 90 is the same as the thermal head of a thermal printer, and for example, 96 heating elements 103 are provided in one row in the front-rear direction in the thermal head 90.

In the punching process, the stamp body 1 is mounted on the punching mount portion 71, the thermal head 90 is brought into contact with the stamp face portion 33 of the mounted stamp body 1, and the thermal head 90 is moved together with the carriage. It is performed by selectively driving.

Next, the operation of the stamp device including the stamp body 1 and the heat punching device 50 described above will be described.

With respect to the stamp body 1, a large number of perforations having a desired pattern are previously formed on the heat-sensitive stencil sheet 28 forming the stamp surface portion 33, the protective cap 7 is removed, and the stamp surface portion 33 is removed through the skirt member 6. After the gripping portion 2 is grasped and the gripping portion 2 is pushed downward and the stamp surface portion 33 is pressed against the surface of the paper after being positioned at a desired position on the surface of the paper, the inside of the first impregnation layer 27a of the impregnation body 27 is pressed. The ink permeates through many perforations, so that the perforation pattern can be printed on the surface of the paper.

The impregnation layer 27 has a two-layer structure having different densities. Since the first impregnation layer 27a having a low density is arranged on the heat-sensitive stencil sheet 28 side, the air that has entered at the time of the imprinting can easily escape from the perforations of the heat-sensitive stencil sheet 28. Also, even if a force is applied during printing, swaying is less likely to occur, and the ink that oozes out is also uniform throughout,
Can have high print quality. This can be said during the punching process, and even if the pressing force of the thermal head at the time of punching is applied, the heat-sensitive stencil sheet 28 is not largely deflected, and the heat-sensitive stencil sheet 28 can be punched uniformly over the entire printing surface. . Further, even when the stamp body 1 is placed vertically or horizontally, there is almost no deviation of the ink.

On the other hand, since the second impregnation layer 27b having a high density is arranged on the base member 26 side, the adhesion between the second impregnation layer 27b and the base member 26 is good, and the second impregnation layer 27b and the base member 26 are provided. Air is hard to collect between and. Further, it is possible to sufficiently impregnate an appropriate amount of ink.

A vertically movable skirt member 6 surrounding the outer peripheral side of the stamp portion 3 is provided.
The skirt member 6 is configured to be able to move up and down over a position, a second position, and a third position.
Since the elastic member is elastically biased toward the first position, a desired pattern can be perforated in the stamp face portion 33 in a dod pattern while the skirt member 6 is held at the third position.

During printing, the skirt member 6 is held at the first position, the skirt member 6 is set at the position to be printed on the front surface of the paper, the marking surface portion 33 is positioned, and then the grip portion 2 When is pressed, the spring 21 contracts and the skirt member 6 rises to the second position, so that printing can be accurately performed at a desired position. Then, when the pressing force on the grip portion 2 is reduced after printing, the return operation of the skirt member 6 to the first position promotes the peeling of the paper from the stamp surface portion 33, so that the printing can be performed neatly on thin paper. can do. However, in the case of printing in a narrow frame on the surface of the paper, it is possible to print while holding the skirt member 6 at the second position or the third position by hand.

When not in use, the skirt member 6 can be held in the first position by the urging force of the spring 21, and the stamp body 1 can be entirely supported by the skirt member 6 to protect the stamp face portion 33.

Further, the stamp portion 3 is provided with a heat-sensitive stencil sheet 28 that fixedly covers the surface of the impregnated body 27, and extends inside the skirt member 6 to the outer peripheral side of the base member 26. Since the outer peripheral holding member 5 surrounding the outer peripheral portion of the base paper 28 is provided, the outer peripheral portion of the heat-sensitive stencil base paper 28 extending to the outer peripheral side of the base member 26 can be prevented from being damaged by the skirt member 6, and the impregnated body 27 It is possible to prevent the ink from flowing out to the outside.

Further, since the protective cap 7 is provided to cover the stamp face portion 33 of the stamp portion 3 and is detachably attached to the stamp portion 3, the protective cap 7 allows the stamp face portion when not in use. It is possible to prevent damage of 33 and adhesion of dust, and to prevent printing at a position where printing should not be performed due to an erroneous operation.

When the stamp body 1 is mounted on the mounting portion 71 for punching of the heating punching apparatus 50, the skirt member 6 is switched to the most raised third position by the guide bar 83, so that the stamping surface 33 is punched. Sometimes the skirt member 6 does not interfere with the drilling.

[0079]

As is apparent from the above description, according to the stencil printing plate of the first aspect, the air that has entered through the perforations of the heat-sensitive stencil sheet at the time of imprinting can easily escape from the perforations. In addition, it is possible to prevent ink leakage due to the entering air.

According to the stencil printing plate of claim 2 or 3, the same effect as that of the stencil printing plate of claim 1 can be obtained. Are less likely to accumulate in the impregnated body, and the outflow of ink due to the expansion of the accumulated air can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a stamp body of a stamp device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a stamp body.

FIG. 3 is a vertical sectional front view of a stamp body.

FIG. 4 is a vertical sectional side view of a stamp body.

FIG. 5 is an enlarged vertical sectional front view of a stamp body of the stamp body.

FIG. 6 is an enlarged sectional view of a heat-sensitive stencil sheet of a stamp body.

FIG. 7 is a perspective view illustrating a method for manufacturing a stamp portion main body.

FIG. 8 is a vertical sectional front view of the stamp body when the skirt member is at a third position.

FIG. 9 is a vertical sectional front view of the stamp body when the skirt member is at the second position.

FIG. 10 is a diagram showing an example of a pattern for perforating a stamp face of a stamp body.

FIG. 11 is a perspective view of a heat punching device of the stamp device.

FIG. 12 is a perspective view of a heat punch and a stamp body.

FIG. 13 is a plan view of the heating perforation apparatus.

FIG. 14 is a perspective view of a heating punching unit of the heating punching device.

FIG. 15 is an exploded perspective view of a heating and punching mechanism.

FIG. 16 is a vertical cross-sectional front view of the stamp body and the heating punching portion after being mounted on the punching mounting portion.

FIG. 17 is an enlarged vertical sectional front view of a stamp body of a stamp body according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 stamp body 2 gripping part 3 stamp part 4 stamp part main body 26 base member 27 impregnation body 27a first impregnation layer 27b second impregnation layer 28 heat-sensitive stencil sheet 33 marking surface portion

Claims (3)

[Claims] 1. A base member that can be connected to a gripping portion for gripping by hand, an impregnated body fixed to the lower surface of the base member and impregnated with ink, and a seal face portion that fixedly covers the surface of the impregnated body. A stencil printing plate containing a heat-sensitive stencil sheet constituting the above, wherein the impregnated body has a density of 50 to 200 kg / m ³ . 2. The impregnated body has a structure of at least two layers having different densities, and has a density of 50 on the heat-sensitive stencil sheet side.
The stencil printing plate according to claim 1, wherein a layer having a low content of ˜200 Kg / m ³ is provided, and a layer having a high density is provided on the opposite side. 3. The impregnated body has a low layer having a density of 50 to 200 kg / m ³ arranged on the heat-sensitive stencil sheet side and a density of 200 to 200 arranged on the side opposite to the heat-sensitive stencil sheet side. 7
The stencil printing plate according to claim 2, wherein the stencil printing plate is composed of two layers including a high layer of 00 kg / m ³ .