JPH10287031A - Stamp body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stamp body which reduces the amount of ink oozing from an impressed face part thereby obtaining a clear seal. SOLUTION: After an impress face part 33 of a stamp body 201 is bored, the impress face part 33 is pressed to a paper while a holding part 202 of the stamp body 201 is held. When the impress face part 33 is pressed, a part corresponding to a gap part of projections 25a of an upper face of an impregnation body 27 is not compressed, but a part butting to the plurality of projections 25a is pressed by the plurality of projections 25a and therefore the impregnation body 27 is compressed. At the same time the stamp body 201 is lowered. When the stamp body descends, a lower end face of a stopper 206 arranged below a base member 226 butts against the paper, whereby a pressing force for pressing the impress face 33 to the paper is limited. The amount of ink oozing from the impregnation body 27 is comparatively reduced to the amount of ink oozing from the impregnation body compressed by a recessed part of the base member of a conventional stamp body. Excessive oozing of ink from the impregnation body 27 is thus prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stamp body having a stamped surface portion made of heat-sensitive stencil paper, and more particularly to a stamped body capable of reducing the amount of ink oozing from the stamped surface portion to obtain a clear seal. It is about.

[0002]

2. Description of the Related Art Conventionally, as stamps for printing a company name, an address, and other various character strings on paper, various stamps having a rubber stamp portion are 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, it is possible to perforate a desired pattern by irradiating infrared rays or a thermal head, and by transmitting (leaching) ink from the perforated group, heat sensitivity that can be utilized for various printing of character strings, figures, marks, etc. Stencil paper has been put to practical use.

[0003] The applicant of the present application has disclosed in Japanese Patent Laid-Open No. 7-149.
No. 034, invented a stamp body detachably configured in a heating perforation apparatus for forming a perforation in a stamp surface of a stamp body. The stamp body includes a stencil printing plate in which an impregnated body impregnated with ink is housed in a base member and covered with a heat-sensitive stencil sheet. Such a stamp body performs dot-shaped perforation on a stamped surface of a heat-sensitive stencil sheet of a stencil printing plate by a thermal head of a heating perforation apparatus.
At the time of stamping (printing) of the stamp body, the impregnated body is pressed and compressed by a surface (contact surface) of the base member of the stamp body that is in contact with the impregnated body, and ink is supplied to the stamp surface portion and dot is formed. Pattern is imprinted. Therefore, the seal can be performed without applying ink to the stamp surface from outside.

[0004]

However, when the stamp body is pressed against a printing medium such as paper for stamping, the contact surface of the base member of the stamp body with the impregnating body is formed in a flat shape. However, this planar contact surface excessively presses the entire impregnated body. Therefore, there is a problem in that the impregnated body impregnated with the ink is excessively compressed, and excessive bleeding (bleeding) of the ink is caused from the stamp surface of the stamp body. In addition, when a stamp body with excessive ink bleeding is used to print on a printing medium such as paper, the dot-shaped pattern is crushed, and the printing becomes unclear.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a stamp body capable of obtaining a clear seal by reducing the amount of ink oozing out from a stamp face. I have.

[0006]

Means for Solving the Problems In order to achieve this object, a stamp body according to claim 1 is provided with a grip portion, a base member provided on the grip portion, an ink body held by the base member, and an ink. A heat-sensitive stencil sheet which covers the surface of the body in a fixed manner and constitutes a stamped surface portion, and moves relative to the stamped surface portion while pressing the stamped surface portion to form a dot-shaped sheet on the heat-sensitive stencil sheet. A plurality of protrusions are formed on a contact surface of the base member with the ink body, and a plurality of protrusions are formed on the grip portion, and the stamp surface portion is formed on the grip portion. A stopper member for limiting the pressing force for pressing the print medium against the print medium is provided.

According to the stamp body of the first aspect,
When the stamp body is mounted on the heat punching device, the thermal head is pressed by the stamp face of the stamp body, and moves in relation to the stamp face while punching dots in the stamp face. After drilling, remove the stamp body from the heating drilling device,
The stamped portion is pressed against the surface of a printing medium such as a sheet by grasping the gripping portion of the stamp body. When the stamp face is pressed, the plurality of protrusions of the base member press the ink body, and the ink oozes out of the compressed ink body through the perforations of the heat-sensitive stencil sheet constituting the stamp face, and perforates the stamp face. The printed dot pattern is printed on paper. At this time, since the stopper member is provided on the holding portion of the stamp body, the pressing force for pressing the stamp surface against the print medium is limited to a constant value, and the amount of ink oozing out of the ink body is reduced. Further, a portion of the ink body that contacts the plurality of protrusions of the base member is pressed, and a portion that does not contact the plurality of protrusions is not pressed.
Therefore, the amount of ink oozing from the ink body is reduced as compared with the conventional stamp body, and excessive oozing of the ink from the stamp surface is prevented.

According to a second aspect of the present invention, in the stamp body according to the first aspect, the plurality of protrusions are arranged so as to prevent depression of the stamp surface portion due to pressing of the thermal head. According to the stamp body of the second aspect, the stamp body of the first aspect operates in the same manner as the first aspect, and the plurality of protrusions of the base member are arranged so as to prevent the depression of the stamp face. Therefore, in the case where the thermal head moves relative to the stamp surface and makes a dot-shaped perforation in the heat-sensitive stencil sheet of the stamp surface, the stamp surface of the stamp body pressed by the thermal head is not depressed. Therefore, the thermal head can pierce the stamp surface of the stamp body while maintaining a constant pressing force.

According to a third aspect of the present invention, there is provided a stamp body comprising: a grip portion; a base member provided on the grip portion; an ink body held by the base member; A stamp body comprising: a heat-sensitive stencil sheet on which dot-shaped perforations are made; and a plurality of projections formed on a surface of the base member that contacts the ink body.

According to the third aspect of the present invention, the heat-sensitive stencil sheet at the stamp surface is gripped by the gripping portion of the stamp body in which dot-shaped perforations are formed, and the stencil printing plate is placed on the surface of a printing medium such as paper. , The plurality of protrusions of the base member press the ink body, and the ink oozes out of the compressed ink body through the perforations of the heat-sensitive stencil sheet forming the stamp face, and the dots formed on the stamp face are perforated. Is printed on the paper.
At this time, a portion of the ink body that contacts the plurality of protrusions of the base member is pressed, and a portion that does not contact the plurality of protrusions is not pressed. Therefore, the amount of ink oozing from the ink body is reduced as compared with the conventional stamp body, and excessive oozing of the ink from the stamp surface is prevented.

According to a fourth aspect of the present invention, in the stamp body of the first aspect, the plurality of protrusions are arranged in a staggered manner. According to the stamp body of the fourth aspect, it operates in the same manner as the stamp body of any one of the first to third aspects, and the plurality of projections are arranged in a staggered manner. Therefore, when making a dot-shaped perforation in the stamp surface while moving relative to the stamp surface, the stamp surface of the stamp body pressed by the thermal head is not depressed.
Therefore, the thermal head keeps a certain pressing force,
Perforations can be made in the stamp face of the stamp body.

[0012]

Preferred embodiments of the present invention will be described below with reference to the drawings. The stamp body 1 according to the present embodiment is shown in FIGS. 1 to 11, and FIGS. 12 to 22 show a heating and punching apparatus 50 for mounting and punching the stamp body 1.

First, the stamp body 1 will be described with reference to FIGS. As shown in FIGS.
The stamp body 1 mainly includes a grip portion 2 for grasping by hand, a stamp portion 3 fixedly connected to the grip portion 2, a skirt member 6 for covering the outer peripheral side of the stamp portion 3, and a stamp portion 3. And a protective cap 7 which is detachably attached to the protective cap 7.

The grip portion 2 is formed of a rectangular parallelepiped hollow body made of metal or synthetic resin material and having an open lower end, and a label attaching surface 11 for attaching a label 10 to be described later is formed on a top portion thereof. . Front wall 12 and rear wall 13 of gripper 2
And a pair of engaging claws 1 protruding downward, respectively.
4 are provided. A guide groove 15 is formed below the front wall 12 and the rear wall 13 of the grip portion 2.
A guide hole 18 is formed in the left side wall 17, and a spring support portion 20 is formed in the center of the lower surface of the upper wall 19 inside the grip portion 2.

The stamp unit 3 includes a stamp unit main body 4 and an outer peripheral holding member 5 to which the stamp unit main body 4 is inserted and fixed from below. The upper part of the outer periphery of the stamp body 4 is covered by about 2/3 of the outer periphery of the stamp body 4, and the outer periphery holding member 5 engages with the four engaging claws 14 of the grasping portion 2 to grasp the stamp. It is fixed to the part 2.

The stamp portion main body 4 has a shallow concave portion 2 on the lower surface side.
5 and a plurality of columnar projections 25 formed in the recess 25 thereof
a and a base member 26 made of a synthetic resin,
The impregnated body 27 impregnated with the oil-based ink to be mounted in the recess 25 of No. 6 and the lower surface of the impregnated body 27 and the outer peripheral side of the base member 26 are covered and adhered to the outer peripheral surface of the base member 26 with an adhesive 29. And a heat-sensitive stencil sheet 28. 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 a hollow rectangular parallelepiped,
It is made of a synthetic resin material having excellent oil resistance (for example, vinyl chloride, polypropylene, polyethylene, polyacetal, polyethylene terephthalate, etc.) or a metal material because of contact with the oil-based ink. The lower surface of the base member 26 has a concave portion 2 having a substantially rectangular cross-sectional shape when viewed from below.
5 is recessed (see FIG. 5). Also, this recess 25
A plurality of columnar projections 25a are arranged in a zigzag pattern at substantially equal intervals above the base member 2 (see FIG. 7).
6 are integrally formed. The lower end surfaces of the plurality of projections 25a form the upper wall surface of the concave portion 25 with which the upper surface of the impregnating body 27 contacts (see FIG. 5).

As shown in FIG. 5, an impregnating body 27 to be described later is fitted in the recess 25, the upper surface of which is in contact with the lower surface of the plurality of projections 25a, and the lower surface of which is a heat-sensitive stencil sheet 28 to be described later.
To form a stamped surface portion 33 of the stamp body 1. According to the stamp face portion 33 of the stamp body 1 thus formed, as shown in FIG. 22, a thermal head 90 described later moves in the direction of arrow X while pressing the stamp face portion 33, and Is pierced. At this time, as shown in FIG. 7, the thermal head 90 abuts on the stamp face 33 perpendicularly to the longitudinal direction (the direction of the arrow X) of the stamp face 33 (the depth direction in FIG. 22). When the thermal head 90 moves in this manner, the stamp surface portion 33 that contacts the thermal head 90
Above, and in the longitudinal direction of the stamp face portion 33 (the direction of the arrow X)
In the direction perpendicular to the direction (the depth direction in FIG. 22), any one of a plurality of projections 25a is always present (see FIG. 7).
Therefore, the stamp surface portion 3 pressed by the thermal head 90
3, the heat-sensitive stencil sheet 28 can be perforated with a constant pressing force. Therefore, perforation can be reliably performed on the heat-sensitive stencil sheet 28 of the stamp face portion 33 without causing perforation failure due to poor melting.

When stamping is performed using the stamp body 1 thus punched, the grip portion 2 of the stamp body 1 is gripped and the stamp face portion 33 is pressed against the sheet. When the stamp surface portion 33 is pressed, the portion of the upper surface of the impregnated body 27 corresponding to the gap between the protrusions 25a is not compressed, and only the portion that contacts the plurality of protrusions 25a is pressed by the plurality of protrusions 25a. The impregnated body 27 is compressed. Therefore, the amount of ink oozing out of the impregnating body 27 is reduced as compared with the amount of ink oozing out of the impregnating body compressed by the concave portion of the base member in the conventional stamp body, and the excess ink oozing out of the impregnating body 27 is obtained. Is prevented. Therefore, when stamping is performed using the stamp body 1, a clear stamping result without bleeding can be obtained.

When the stamp surface 33 of the stamp body 1 is turned upward, a part of the oil-based ink impregnated in the impregnating body 27 is displaced along each side surface of the plurality of protrusions 25a.
Leach into the gap. Thereafter, when the stamp surface portion 33 of the stamp body 1 is turned downward, a part of the oil-based ink leached into the gaps between the projections 25a remains in the gaps between the projections 25a due to the surface tension. At this time, the protrusion 2
5a is formed in a columnar shape. For example, when compared with a square columnar shape having the same volume, the surface area of the side surface portion can be minimized. Therefore, the gap between the protrusions 25a is formed along the side surface portion of the protrusion 25a. It is possible to reduce oil-based ink that oozes into the portion. Therefore, the amount of useless oil-based ink remaining in the gaps between the projections 25a can be reduced.

Further, by mounting the impregnating body 27 in the concave portion 25 having the upper wall surface constituted by the plurality of projections 25a, the displacement of the impregnating body 27 can be prevented, and the outflow of ink from the impregnating body 27 can be prevented. be able to.

The impregnated body 27 is made of a resilient foam or non-woven fabric of a synthetic resin material (for example, polyethylene, polypropylene, polyethylene terephthalate, polyurethane, acrylonitrile butadiene rubber, etc.). Are impregnated to saturation. Therefore, when pressure is applied to the impregnating body 27, the ink oozes out.

As shown in FIG. 6, the heat-sensitive stencil paper 28
Is composed of a thermoplastic film 30, a porous support 31, and an adhesive layer 32 for bonding them. The thermoplastic film 30 has a thickness of 1 to 4 μm, preferably 2 μm.
m of a thermoplastic synthetic resin material (for example, polyethylene terephthalate, polypropylene, vinylidene chloride-vinyl chloride copolymer, etc.). Thickness 1
If the thickness is less than μm, the production cost is high, the strength is weak, and the practicability is poor. On the other hand, if the thickness is 4 μm or more, the hole cannot be perforated with a general thermal head having a rated output of about 50 mJ / mm ² because it is too thick. is there. The porous support 31 is mainly 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. It is made of porous thin paper used as a raw material.

As shown in FIG. 8, the stamp section main body 4
It is manufactured by the following procedure. That is, after impregnating body 27 is impregnated with the oil-based ink, impregnating body 27 is attached to recess 25 with base member 26 upside down. A heat-sensitive stencil sheet 28 is placed on the impregnated body 27 so that the porous support 31 is on the impregnated body 27 side. The heat-sensitive stencil sheet 28 is brought into close contact with the surface of the impregnated body 27, and the outer peripheral portion of the heat-sensitive stencil sheet 28 is tightly folded on the outer peripheral surface of the base member 26 and adhered by the adhesive layer 29. The stamp section main body 4 thus manufactured is inserted and fixed in the outer peripheral holding member 5, and the stamp section 3 is manufactured.

A portion of the heat-sensitive stencil sheet 28 which is in close contact with the surface (the lower surface in FIG. 5) of the impregnated body 27 constitutes a stamp face portion 33. As described above, the configuration in which the outer peripheral portion of the heat-sensitive stencil sheet 28 is adhered to the outer peripheral surface of the base member 26 is employed, so that the stamp surface portion 33 can be formed over substantially the entire lower surface of the stamp portion 3. Therefore, positioning during printing is simplified.

In order to adhere the outer peripheral portion of the heat-sensitive stencil sheet 28 to the outer peripheral surface of the base member 26, the heat-sensitive stencil sheet 28
The adhesive layer 29 may be formed in advance on the outer peripheral side portion of. Further, the adhesive layer 29 may be formed on the outer peripheral surface of the base member 26 in advance. Alternatively, the adhesive layer 29 may be applied to both the outer peripheral portion of the heat-sensitive stencil sheet 28 and the outer peripheral surface of the base member 26.
May be formed in advance.

As shown in FIG. 2 to FIG.
Is an outer peripheral wall portion 34 having a rectangular shape in plan view to which the stamp portion main body 4 is adhered in an inner fit, an upper wall portion 35, and a pair of left and right engaging wall portions projecting from the upper wall portion 35 by a predetermined height. 36. The pair of left and right engagement wall portions 36 includes
Four engagement holes 37 corresponding to the four engagement claws 14 are formed. The pair of left and right engagement wall portions 36 are slidably inserted into the pair of left and right rectangular holes 42 of the upper wall portion 41 of the skirt member 6 from below in a vertical direction. The four engagement claws 14 of the grip portion 2 are engaged with the four engagement holes 37 of the engagement wall portion 36 from above, and the upper end of the engagement wall portion 36 is gripped by the grip portion 2.
The outer peripheral holding member 5 is fixed to the grip portion 2 by being brought into contact with the lower end of the gripper 2.

The skirt member 6 is provided at an upper end of the outer peripheral wall portion 40 of a rectangular shape in a plan view in which the outer peripheral wall portion 34 of the outer peripheral holding member 5 is slidably fitted in the up-down direction. An upper wall portion 41 located above the upper wall portion 35 of the outer peripheral holding member 5, a gate-shaped portion 43 that projects upward from the center of the upper wall portion 41 by a predetermined height and is inserted into the grip portion 2, A spring support 4 projecting from the center of the upper end of the gate 43
5. Guide holes 44 are formed in the lower part of the left and right walls of the gate 43 at the front-rear position corresponding to the guide holes 18 of the gripper 2 so as to penetrate both walls.

A compression spring 21 for urging the skirt member 6 downward with respect to the grip part 2 is mounted on the spring support part 20 of the grip part 2 and the spring support part 45 of the skirt member 6. The skirt member 6 is urged downward by the compression spring 21, and moves up and down over a first position shown in FIGS. 3 and 4, a second position shown in FIG. 10, and a third position shown in FIG. It is freely configured. In order to attach and detach the protective cap 7 and to position the stamp face portion 33, 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.

In the first position (FIGS. 3 and 4), the upper wall 41 of the skirt member 6 is
, The lower end of the skirt member 6 protrudes lower than the stamp face portion 33. Also, at the second position (FIG. 10),
The upper wall portion 41 of the skirt member 6 is located between the upper wall portion 35 of the outer peripheral holding member 5 and the lower end of the grip portion 2, and the lower end of the skirt member 6 is located at the same level as the stamp surface portion 33. Further, at the third position (FIG. 9), the upper wall portion 41 of the skirt member 6 abuts on the lower end of the grip portion 2, and the lower end of the skirt member 6 is located above the stamp face portion 33. That is, the third
In the position, the stamp face portion 33 is located below the lower end of the skirt member 6. The first of the skirt members 6
The stroke from the position to the second position is set to about 5 mm.

The protective cap 7 is provided for detachably covering the lower end side of the stamp body 4 to protect the stamp face 33. The outer peripheral wall 48 of the protective cap 7 is formed in the same shape as the outer peripheral wall 34 of the outer peripheral holding member 5 in a plan view. The protective cap 7 is supported by being fitted inside the outer peripheral wall portion 40 of the skirt member 6.

As shown in FIGS. 3 and 4, when the protective cap 7 is mounted, a small gap is left between the protective cap 7 and the stamp face portion 33. The protective cap 7 is supported by a frictional force between the outer peripheral surface of the outer peripheral wall 48 and the inner peripheral surface of the outer peripheral wall 40 of the skirt member 6.
Therefore, even if the grip portion 2 is pushed downward with the protective cap 7 attached, such a 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.
No ink adheres to the protective cap 7.

As shown in FIG. 11, for example, the stamp face 33 has a pattern of a character string of a mirror character “□ × △ ○ Kogyo Co., Ltd.” and a triple rectangular frame surrounding the outside. Many perforations (dot pattern perforations) are made by a thermal head of a thermal printer. As a result, FIG.
Since a stamp body capable of printing a character string “□ × △ ○ Kogyo Co., Ltd.” which is a mirror image of the pattern 1 and a triple rectangular frame is formed, a stamp having a normal rubber stamping portion is provided. Similarly, the pattern can be printed, for example, about 1000 times. It is needless to say that a hole can be formed by infrared irradiation in addition to the hole formed by the thermal head.

The heat-sensitive stencil sheet 28 constituting the stamp face portion 33
When the stamp body 1 is to be pierced, the stamp body 1 is set in the mounting portion 71 for piercing of the heating piercing device 50 described later, and the guide bar 83 of the device is inserted through the guide holes 18, 44 and 44. The piercing is performed while holding the skirt member 6 in the third position. When not in use, the protective cap 7 is attached, and the skirt member 6 is held at the first position as shown in FIGS. On the other hand, when printing, the protective cap 7 is removed, the skirt member 6 is held at the first position,
By positioning the skirt member 6 at a position to be printed on the front surface of the sheet, the stamped surface portion 33 of the stamp portion 3 is positioned, and then, as shown in FIG. 10, the grip portion 2 is pressed downward to perform printing.

Next, the heating punch 50 will be described. As shown in FIG. 12 to FIG.
Is mainly composed of a main body frame 51, a keyboard 52 and a liquid crystal display 5 provided at a front portion of the main body frame 51.
3, a heating hole 54 provided at the rear of the main body frame 51, a control unit 55 provided in the main body frame 51, and the like.

The keyboard 52 includes a character / symbol key 56 including a plurality of character keys and a plurality of symbol keys which also serve as kana keys, alphabet keys, and various function keys (cursor movement key 57, execution key 58, line feed key 59, A confirm / end key 60, a cancel key 61, a delete key 62, 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 are provided. The liquid crystal display 53 is configured to be able to display a plurality of lines of character strings corresponding to a pattern to be printed on the stamp body 1.

Referring to FIG. 14 to FIG.
4 will be described. A sub-frame 70, a perforated mounting portion 71 for removably mounting the stamp body 1, and a dove-shaped portion on the stamp face 33 of the stamp body 1 mounted on the perforated mounting portion 71 are formed on the heated perforated portion 54. And a heating perforation mechanism 72 for performing perforation.

First, the mounting portion 71 for drilling will be described with reference to FIGS. The right side wall 73 of the sub-frame 70 is formed with an opening 74 having substantially the same shape as the side surface shape of the lower half of the stamp body 1 in which the width of the stamp portion 3 in the front-rear direction is the largest. A sector gear 76 is fixedly provided on an opening / closing door 75 that opens and closes the opening 74.
Thereby, it is pivotally attached to the right side wall 73. A pair of front and rear parallel guide members 7
8 and 79 are provided at the lower ends of these guide members 78 and 79.
Are formed opposite to each other.

A pair of left and right rollers 81 are provided on the front side guide member 78 via a long hole so as to be movable in the front-rear direction by a small distance, and these rollers 81 are urged rearward by a spring 82. Have been. The guide bar 83 fixed to the guide member 78 on the near side is disposed at an intermediate position between the guide members 78 and 79. FIG.
As shown in FIG. 21, a taper surface 84 inclined downward to the right is formed on the upper surface of the right end of the guide bar 83, and the left end of the guide bar 83 regulates the left limit position of the stamp body 1. A locking portion 85 is formed.

The stamp body 1 is inserted from the opening 74, and a pair of front and rear guide portions 80 is engaged with a pair of front and rear guide grooves 15 of the gripping portion 2 of the stamp body 1, so that the stamp body 1 is made up of one pair. Is supported by the guide portion 80. Stamp body 1
The position of the stamp body 1 is accurately set by being urged backward by a spring 82 via a pair of rollers 81, the stamp body 1 abuts the locking portion 85, and the right roller 81 is The stamp body 1 is engaged with the engagement recess 16 of the stamp body 1.
The left and right positions are set accurately. When mounting the stamp body 1 on the mounting portion 71 for perforation,
The guide bar 83 is provided with the guide holes 18, 44,
It is inserted through 44. Thereby, the skirt member 6
Is held in a state of being raised to the third position shown in FIG.

Next, the heating perforation mechanism 72 will be described with reference to FIGS. Below the perforation mounting portion 71, the right side wall 73 and the left side wall 86 of the sub-frame 70 are provided.
A guide rod 88 extending in the left-right direction for guiding the carriage 87 and a cam body 91 for guiding the carriage 87 and switching the position of the thermal head 90 mounted on the carriage 87 are operated in the left-right direction. An extended head switching rod 89 is mounted on the cam body 91.
Is mounted on the head switching rod 89 so as to be non-rotatable and slidable in the axial direction.

The carriage 87 is supported by a guide rod 88 and a head switching rod 89 so as to be movable in the left-right direction. At a front end of the carriage 87, a rack 92 having a predetermined length is formed over its entire length. I have. Carriage 8
7, a cam abutting plate 93 and a head heat radiating plate 94 are mounted to be vertically swingable by a support shaft 95 oriented in the front-rear direction. A thermal head 90 is fixed to the head heat radiating plate 94, and the head heat radiating plate 94 is elastically urged upward with respect to the cam contact plate 93 by a spring 97 provided on a pin 96 fixed thereto. ing.

The cam body 91 is formed in an elliptical shape and is in 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 to the sideways posture,
The thermal head 90 is released downward together with the head radiator plate 94. When the cam body 91 is in the upright posture, the thermal head 90 swings upward via the cam contact plate 93 and the spring 97 and is switched to the perforation position.

At the right end of the head switching rod 89, a gear 98 meshing with the sector gear 76 is provided outside the right side wall 73 of the sub-frame 70. Therefore,
When the opening / closing door 75 is opened, the gear 98 rotates with the rotation of the sector gear 76, the head switching rod 89 rotates, and the cam body 91 assumes the horizontal posture. When the door 75 is closed, the sector gear 76 and the gear 98 rotate in the opposite directions,
The head switching rod 89 rotates in the reverse direction so that the cam body 91 is switched to the vertical position.

On the front wall 99 of the sub-frame 70, a stepping motor 100 for driving a carriage 87, a driving gear 101 meshed with a rack 92, and a rotation of an output gear 102 fixed to an output shaft of the stepping motor 100 are driven. A reduction gear mechanism 107 for transmitting to the gear 101 is 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 similar to the thermal head of a thermal printer. As shown in FIG. 24, the thermal head 90 has, for example, 96 heating elements 103 arranged in a line in the front-rear direction. Is provided.

Next, a control system including a control unit 110 for controlling the driving of the heating perforation mechanism 72 and the liquid crystal display 53 will be described. As shown in FIG. 23, the control unit 110 includes a keyboard 52 and a thermal head 90.
And a carriage feed motor (stepping motor) 10
0, a liquid crystal display 53, and two proximity switches 104,
105 is connected.

In the case of the present embodiment, the stamp body 1 is shown in FIG.
20 and a narrow type shown by a solid line and a wide type shown by a chain line in FIG.
As shown in FIGS. 14, 16 and 20, the plate pieces 10 fixed to the lower surface of the guide member 79 on the rear side.
6, the proximity switches 104 and 105 detect the wide stamp body 1, and the proximity switch 104 detects the narrow stamp body 1.

As shown in FIG.
CPU 111, ROM 112, RAM 113
A CG-ROM 114 for punching, a CG-ROM 115 for display on the display 53, an input interface 116 connected to the keyboard 52 and the proximity switches 104 and 105, and an output interface 117.
Are connected to each other by a bus 118. Further, the control unit 110 has a head drive circuit 11 connected to the output interface 117, respectively.
9, a motor drive circuit 120 and a display drive circuit 121 are provided.

The ROM 112 is provided with a program memory 122 for storing a control program for controlling the entire operation of the heating and punching apparatus 50, and a dictionary memory 123 for kana / kanji conversion and the like. The RAM 113 is provided with an input buffer 124 for storing input data, a punching buffer 125 for storing punching data, a shift register 126, and various other counters and registers. In the CG-ROM 114 for punching, dot pattern data of many characters to be punched are stored in association with the code data. In the CG-ROM 115 for display, the dot patterns for display of many characters to be punched are displayed. Pattern data is stored in association with code data.

Next, the head drive circuit 119 will be described. As shown in FIG. 24, one electrode of each heating element 103 is connected to a + 12V power supply terminal 127, and the other electrode is connected to a driver 128. The input terminal of each driver 128 has an inverter 1 whose input side is connected to a strobe input terminal 130 for drilling.
29 output terminals and each output terminal of the data latch circuit 132 whose input side is connected to the latch signal input terminal 131 are connected to each other. Further, each input terminal of the data latch circuit 132 has a shift register 1 in which input terminals are connected to a clock input terminal 133 and a data input terminal 134.
35 output terminals are connected to each other.

In the head driving circuit 119, when the data for punching is stored in synchronization with the clock signal in the shift register 135, and then the latch signal is supplied to the data latch circuit 132, the data is stored in the shift register 135. The data is output to the corresponding data latch circuit 132 and stored. At the same time, the data is applied to each driver 128. In this state, when a perforation pulse signal of logic “0” is applied to the input terminal of the inverter 129 from the perforation strobe input terminal 130,
A signal of logic “1” is output from the output terminal of the inverter 129 and applied to one input terminal of each driver 128. Therefore, when the data of the data latch circuit 132 is logic “1”, the output side of the driver 128 becomes logic “0”, and the driving current is supplied from the power supply terminal 127 to the corresponding heating element 103. The heating element 1
The pulse width of the drilling pulse signal input to the drilling strobe input terminal 130 is set so that the surface temperature of 03 becomes a temperature suitable for thermal drilling.

Next, with reference to the flowcharts of FIGS. 25 and 26, a description will be given of a punching process for punching a character string pattern on the stamp face portion 33 of the stamp body 1 using the heating punching device 50. The punching process includes a process executed by the control unit 110 and an operation executed by an operator. In the figure, the symbol Si (i =
1, 2, 3,...) Indicate each step.

The process is started when the main switch 67 is turned on, and first, detection signals from the proximity switches 104 and 105 are read (S1). It is determined whether or not the stamp body 1 is present, that is, whether or not the stamp body 1 is mounted on the mounting portion 71 for perforation (S2). When the stamp body 1 is mounted (S2: Yes), that is, when the power is turned on while the stamp body 1 is mounted on the mounting portion 71 for drilling, a liquid crystal display (hereinafter, referred to as LCD) 53 is provided.
Is displayed (S3), and the process returns to S1. Until the stamp body 1 is removed by the operator, the above S
The processing of 1 to S3 is repeatedly executed.

Whether the stamp body 1 is not mounted on the mounting portion 71 for drilling when the power is turned on (S2: No), or
When the power was turned on, the stamp body 1 was mounted on the mounting portion 71 for perforation (S2: Yes). Thereafter, when the opening and closing door 75 was opened and the stamp body 1 was removed by the operator (S2: No), the process of S4 was started. Move on to processing. In this process, the data in the RAM 112 of the heating and punching device 50 is cleared, and the carriage feed motor 100 is driven to perform initialization such as moving the carriage 87 to the initial position at the right end of the guide lot 88. At this time, "under preparation" is displayed on the LCD 53 (S4). After the initial setting, the keyboard 52 is operated by the operator, and the input setting of the contents of the stamp surface is performed (S5). In this input setting, designation of a stamp face size, format input including setting of a character size and a character arrangement, and input of punching character string data to the input buffer 124 are performed.

When the input setting of the contents of the seal is completed (S5),
A message "Please attach a stamp body" is displayed on the LCD 53 (S6). Thereafter, the process stands by until the operator turns on the perforation switch 66 (S7: No). During this time, the operator operates the door 75
Is opened, the stamp body 1 is mounted, and the opening / closing door is closed. That is, the stamp body 1 is mounted on the mounting portion 71 for punching.

By opening the door 75, the sector gear 76 is rotated clockwise in FIG.
Along with the rotation of 6, the head switching rod 89 rotates in the counterclockwise direction in the figure via the gear 98 meshing with the sector gear 76. Then, the cam body 91 mounted on the head switching rod 89 is turned to the horizontal position, and the thermal head 90 is released downward together with the head radiating plate 94.

The operator inserts the stamp body 1 through the opening 74 while engaging the guide groove 15 of the grip portion 2 of the stamp body 1 with the guide portion 80. Since the thermal head 90 is released downward, the thermal head 90 does not hinder the mounting of the stamp body 1 during insertion. Further, with the insertion, the guide bar 83 is inserted through the guide holes 18, 44, 44 of the stamp body 1. Thereby, the gate-shaped portion 4 is formed along the tapered surface 84 of the guide bar 83.
3 rises, and with the rise of the portal portion 43, as shown in FIG. 21, the lower end of the skirt member 6 rises so as to be located higher than the stamp face portion 33, and as shown in FIG. State is maintained.

The operator contacts the stamp body 1 with the locking portion 85 of the guide bar 83, and the right roller 81 provided on the guide member 78 engages with the engaging concave portion 16 of the gripping portion 2 of the stamp body 1. Insert up to. When the stamp body 1 is inserted until it abuts and engages, the stamp body 1 is placed at a predetermined position in the mounting portion 71 for boring shown in FIG.

After the stamp body 1 is mounted, the operator turns the door 75 counterclockwise in FIG. 20 to perform the closing operation.
With this closing operation, the sector gear 76 is rotated counterclockwise in FIG. 20, and with the rotation of the sector gear 76, the head switching rod 89 is rotated clockwise in FIG. Then, the cam body 91 attached to the head switching rod 89
22 is set in the upright posture, and the thermal head 90 swings upward via the cam contact plate 93 and the spring 97.
Is arranged at a perforation position for pressing the right end of the stamp surface portion 33 of the stamp body 1 shown by a solid line.

The operator operates the stamp body 1 as described above.
, The punch switch 66 is turned on (S
7: Yes). When the perforation switch 66 is turned on,
The detection signals of the proximity switches 104 and 105 are read (S8), and it is determined whether or not the stamp body 1 is present, that is, whether or not the stamp body 1 is mounted on the mounting portion 71 for perforation (S9). If the stamp body 1 is not mounted (S9: No), that is, if the operator operates the perforation switch 66 without mounting the stamp body 1, L
The message "Please attach the stamp body" is displayed on the CD 53 (S10), and then the process shifts to S7 to wait for the ON operation of the perforation switch 66 again.

On the other hand, when the stamp body 1 is mounted (S9: Yes), it is determined whether or not the stamp face size set in the processing of S5 matches the size of the stamp body 1 (S11). ). The size of the stamp body 1 refers to the width size of the stamp body 1 determined based on detection signals from the proximity switches 104 and 105.

When the size of the stamp body 1 does not match the set stamp size (S11: No), the LCD 5
Display "Please replace the stamp body" in 3 (S
12), the process proceeds to S7. Then, the currently mounted stamp body 1 is removed, and the stamp body 1 having a size matching the set stamp size is mounted.
The processing of S7 to S12 is repeatedly executed.

On the other hand, when the size of the mounted stamp body 1 matches the set stamp size (S1).
1: Yes), a punching process is performed on the stamp surface portion 33 of the stamp body 1. During the punching process, "drilling" is displayed on LCD 53 (S13). In the punching process, first, dot pattern data for punching is created based on the format and character string data for punching input to the input buffer 124 and stored in the punching buffer 125. The carriage feed motor 100 is driven based on the dot pattern data stored in the perforation buffer 125, and the carriage 8
7 moves from the position shown by the solid line in FIG. 22 to the position shown by the two-dot chain line, and the thermal head 90 is driven,
A perforation is formed in the stamp surface 33 based on the dot pattern data for perforation. At the end of the perforation, the carriage 87 is driven to move to a position where the thermal head 90 is displaced to the left from the printing surface 33, so that the thermal head 90 does not continue to press the printing surface 33 and does not cause ink leakage.

When the drilling is completed (S14: Yes), L
A message "End punching process" and "Remove the stamp body" are displayed on the CD 53 (S15), and the process proceeds to S1. Looking at this display, the operator opens the opening / closing door 75 and removes the stamp body 1. At this time, since the carriage 87 has moved to the position shown by the two-dot chain line in FIG. 22, the carriage 87 and the thermal head 90 do not prevent the removal of the stamp body 1.

As described above, since the heat-sensitive stencil sheet 28 forming the stamp face portion 33 is provided with a large number of perforations of a desired pattern in the stamp body 1, the protective cap 7 of the stamp body 1 is removed. Later, via the skirt member 6,
After positioning the stamp face 33 on the surface of the sheet,
Is pressed downward, the stamp surface portion 33 is pressed against the surface of the sheet. Thereby, the ink in the impregnating body 27 exudes from the many perforations, and a perforation pattern is printed (printed) on the surface of the paper.

The vertically movable skirt member 6 surrounding the outer peripheral side of the stamp portion 3 is configured to be vertically movable over the first position, the second position, and the third position. In the state held in the third position, the stamp surface portion 33
A desired dot-shaped pattern can be perforated.
In addition, since the skirt member 6 is elastically biased toward the first position by the spring 21, the skirt member 6 returns to the first position after the perforation of the dot pattern. Therefore, at the time of printing, the skirt member 6 is held at the first position.
When the grip portion 2 is pressed after positioning the stamp surface portion 33, the spring 21 contracts and the skirt member 6 rises to the second position, so that printing can be performed accurately at a desired position. After the printing, when the pressing force on the grip portion 2 is released, the return operation of the skirt member 6 to the first position promotes the separation of the sheet from the stamp surface portion 33. For this reason, printing can be performed neatly on thin paper.

However, when printing is performed in a narrow frame on the surface of the sheet, printing can be performed with the skirt member 6 held at the second or third position by hand. When the skirt member 6 is not in use, the biasing force of the spring 21 causes
Is held at the first position, and the entire skirt member 6 supports the stamp unit 1. Therefore, the stamp unit 33 can be prevented from contacting the mounting position, and the stamp unit 33 can be protected.

A heat-sensitive stencil sheet 28 that covers the surface of the impregnated body 27 in the stamp portion 3 is provided. The outer periphery of the heat-sensitive stencil sheet 28 extending toward the outer peripheral side of the base member 26 inside the skirt member 6. Since the outer peripheral holding member 5 surrounding the portion is provided, the heat-sensitive stencil paper 2 extending to the outer peripheral side of the base member 26 is provided.
8 can be prevented from being damaged by the skirt member 6, and the ink can be prevented from flowing out of the impregnating body 27 to the outside. Since the detachable protective cap 7 that covers the stamp face portion 33 of the stamp section 3 is provided, the protective cap 7 can prevent damage to the stamp face portion 33 and adhesion of dust when not in use.
It is possible to prevent printing at a position where printing should not be performed due to an erroneous operation.

With respect to the heating and punching device 50, when the stamp body 1 is mounted on the mounting portion 71 for punching, the stamp body 1
Is supported by a pair of front and rear guide portions engaged with the pair of front and rear guide grooves 15, and is pressed backward by a pair of rollers 81 to accurately set the position of the stamp body 1 in the front and rear direction. The stamp body 1 is locked by the locking portions 85 and locked by the ends of the pair of front and rear guide grooves 15, so that the position in the left-right direction is accurately set. In addition, since one roller 81 is engaged with the engaging recess 16 of the stamp body 1, the position of the stamp body 1 does not shift during punching.

The opening / closing door 75 and the cam body 91 are interlocked via the sector gear 76 and gear 98 and the head switching rod 89, and the stamp body 1 is mounted on the mounting portion 71 for perforation until the opening / closing door 75 is closed. The thermal head 90 is configured to release downward. Therefore, stamp body 1
At the time of mounting, the thermal head 90 does not damage the stamp face portion 33. After the perforation is completed, the carriage 8 is moved until the thermal head 90 retreats leftward from the stamp surface portion 33.
7 is moved by the thermal head 90 so that
Can be prevented from leaking out of the ink from the stamp surface portion 33 without continuing to press. On the other hand, when removing the stamp body 1 after the perforation, the opening and closing door 75 opens the thermal head 90.
Is released downward, so that the stamp face portion 33 is not damaged even when the stamp body 1 is taken out.

When the stamp body 1 is mounted on the mounting portion 71 for piercing, the skirt member 6 is switched to the third highest position by the guide bar 83, so that the skirt member 6 hinders the piercing at the time of piercing the stamp face portion 33. Never be.

Since the width size of the stamp body 1 is detected by the proximity switches 104 and 105, the size of the stamp body 1 is not mistaken and a character string that does not conform to the size of the stamp face portion 33 is not pierced. . Further, the stamp body 1 is provided with a guide member 78 in the mounting portion 71 for punching.
Since the gripping portion 2 has the same configuration, both the narrow stamp body 1 and the wide stamp body 1 can be mounted on the mounting portion 71 for drilling. Therefore, it is excellent in versatility.

Next, a second embodiment will be described with reference to FIG. The second embodiment is a modification of the stamp body 1 of the first embodiment. Hereinafter, the same portions as those of the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.
Only different parts will be described. FIG. 27 shows a stamp body 201.
FIG. As shown in FIG.
1 includes a grip portion 202, a base member 226 formed integrally with the grip portion 202, and a stopper 206 provided at an edge portion on the lower surface of the base member 226.
The grip portion 202 is fixed to the vicinity of substantially the center of the base member 226, is formed of a metal material or a synthetic resin material, and is formed in a substantially columnar shape. This grip 202
The upper end portion is formed thicker than the lower end portion, so that the stamp user can easily grip the grip portion 202.

The base member 226 fixed to the lower end of the grip portion 202 is formed in a rectangular parallelepiped shape, and is excellent in oil resistance because of contact with the oil-based ink similarly to the base member 26 of the first embodiment. It is made of a synthetic resin material or a metal material. A concave portion 25 and a plurality of protrusions 25a are formed on the lower surface of the base member 226, and the stopper 206
Are arranged. The stopper 206 is provided at an edge portion of the lower surface of the base member 26, and is fixed to the base member 226 by contacting the inner wall of the recess 25. This stopper 20
6 protrudes below the base member 226, and the stamp body 2
The stamp surface portion 33 of 01 is formed so as to protrude below the lower end surface of the stopper 206 by about 0.5 mm to about 1 mm.

According to the stamp body 201, the stamp face portion 3
After perforating the heat-sensitive stencil sheet 28 constituting 3, the grip section 202 of the stamp body 201 is gripped and the stamp face section 33 is pressed against the sheet. When the stamp surface portion 33 is pressed, the portion of the upper surface of the impregnated body 27 corresponding to the gap between the protrusions 25a is not compressed, and the portion that contacts the plurality of protrusions 25a is pressed by the plurality of protrusions 25a and impregnated. The stamp body 201 descends while the body 27 is compressed. When the stamp body 1 descends, the lower end surface of the stopper 206 disposed below the base member 226 comes into contact with the sheet, and the impregnated body 27 cannot be further compressed. That is, the pressing force for pressing the stamped surface 33 of the stamp body 201 against the paper is limited, and the amount of ink that seeps out of the impregnating body 27 is the amount of ink that seeps out of the impregnating body compressed by the concave portion of the base member in the conventional stamp body. The amount is reduced in comparison with the amount, so that excessive ink seeping out from the impregnating body 27 is prevented. Therefore, when stamping is performed using the stamp body 201, a clear stamping result without bleeding can be obtained.

Although the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the gist of the present invention. Can easily be inferred.

For example, in this embodiment, the mounting portion 71 for drilling is used.
Is configured such that the stamp body 1 is detachably mounted from the right side, but the stamp body 1 may be configured to be detachably mounted from above. Further, the heating perforation mechanism 72 holds the carriage 8 while holding the stamp body 1 at a predetermined position.
Although the thermal head 90 is configured to be pierced while moving through the nozzle 7, the thermal head 90 may be fixedly provided and the stamp body 1 may be configured to be pierced while moving. Further, a solenoid actuator may be provided instead of the cam body 91, and the position of the thermal head 90 may be switched by the actuator. Instead of the rack 92, the driving gear 101, and the reduction gear mechanism 107, the carriage 87 may be driven to move in the left-right direction via a wire and a pulley. Instead of the impregnating body 27, an ink body composed of a high-viscosity ink mass may be used, and the ink body may be mounted in the concave portion 25, and may be raised in the same shape as the impregnating body 27.

[0079]

According to the stamp body according to the first or third aspect, in the case where the stamp face is stamped with a thermal head using a stamp body having a perforated dot shape, the stamp face of the stamp body is pressed against a print medium. The pressing force for performing the pressing operation is limited to a constant value by a stopper member provided on the grip portion. Further, a portion of the ink body of the stamp body where the plurality of protrusions are not in contact does not receive compression by the plurality of protrusions and is not compressed. Therefore, since the amount of ink that seeps out of the ink body of the stamp body is reduced, there is an effect that excessive seepage of ink in the conventional stamp body can be prevented. Therefore, when the stamp is stamped using the stamp body after the punching, a clear stamping result can be obtained.

According to the stamp body of the second or fourth aspect, in addition to the effect of the stamp body of the first or third aspect, the plurality of protrusions of the base member prevent the stamp face from being depressed at the time of perforation. be able to. Therefore, when making a dot-shaped perforation on the heat-sensitive stencil sheet of the stamp surface portion while relatively moving with respect to the stamp surface portion, the thermal head perforates the stamp surface portion of the stamp body while maintaining a constant pressing force. In addition, there is an effect that it is possible to reliably perform perforation on the stamp surface portion without causing poor perforation. Therefore, when the stamp is stamped using the stamp body after the punching, a clear stamping result can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a stamp body 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 the stamp portion main body.

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

FIG. 7 is a bottom view of the stamp body in which the thermal head is in contact with the stamp surface.

FIG. 8 is a perspective view illustrating a method for manufacturing a stamp portion main body.

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

FIG. 10 is a longitudinal sectional front view of the stamp body when the skirt member is at the second position.

FIG. 11 is a diagram showing an example of a pattern for perforating a stamp surface of a stamp body.

FIG. 12 is a perspective view of a heat punching device of the stamp device.

FIG. 13 is a perspective view of a heating punch and a stamp body.

FIG. 14 is a plan view of the heating perforation apparatus.

FIG. 15 is a partially cutaway front view of the heating perforation apparatus.

FIG. 16 is a partially cut-away longitudinal side view of the heating perforation apparatus.

FIG. 17 is a perspective view of a heating perforation portion of the heating perforation device.

FIG. 18 is a perspective view of a main part of a heating perforation section of the heating perforation apparatus.

FIG. 19 is an exploded perspective view of a heating perforation mechanism.

FIG. 20 is a side view of a main part of a heating perforation section of the heating perforation apparatus.

FIG. 21 is a longitudinal sectional front view of a stamp body and a heated perforated portion being mounted on the perforated mounting portion.

FIG. 22 is a longitudinal sectional front view of the stamp body and the heated perforated portion after being mounted on the perforated mounting portion.

FIG. 23 is a block diagram of a control system of the stamp device.

FIG. 24 is an electric circuit diagram of a head drive circuit.

FIG. 25 is a part of a flowchart of a punching process performed by the heating punching apparatus.

FIG. 26 is the remaining part of the flowchart of the punching process performed by the heating punching apparatus.

FIG. 27 is a sectional view of a stamp body according to a second embodiment.

[Explanation of symbols]

 1,201 stamp body 2,202 gripping section 3,203 stamp section 4 stamp section main body 5 outer periphery holding member 25 concave section 25a projection 26,226 base member 27 impregnated body (ink body) 28 heat-sensitive stencil sheet 33 stamped face section 50 heating perforation Device 90 Thermal head 206 Stopper (stopper member)

Claims (4)

[Claims] 1. An image forming apparatus comprising: a grip portion; a base member provided on the grip portion; an ink body held by the base member; and a heat-sensitive stencil sheet which covers the surface of the ink body and forms a stamped surface portion. And a stamp body detachably mounted on a heating perforation apparatus having a thermal head for pressing the stamp surface portion and perforating the heat-sensitive stencil stencil paper in a dot-like manner while moving relative to the stamp surface portion. In the base member, a plurality of protrusions are formed on a contact surface of the base member with the ink body, and a stopper member for limiting a pressing force for pressing the stamp surface portion against a print medium is provided on the grip portion. A stamp body characterized by being provided. 2. The stamp body according to claim 1, wherein the plurality of protrusions are arranged so as to prevent a depression of the stamp surface portion due to pressing of the thermal head. 3. A gripping portion, a base member provided on the gripping portion, an ink body held by the base member, and a stamped surface portion which covers the surface of the ink body in a fixed manner to form a dot-shaped perforation. And a heat-sensitive stencil sheet having a plurality of protrusions formed on a surface of the base member that abuts on the ink body. 4. The stamp body according to claim 1, wherein the plurality of protrusions are arranged in a staggered manner.