JP2000094817A - Stamp unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable ink supplied from an ink pack to be given to the flexible porous resin layer of a stamp material promptly in a stamp unit with a rigid porous resin layer laminated on the flexible porous resin layer. SOLUTION: The rigid porous resin layer is constructed with an upper side layer 71 and intermediate layer 72, and only the upper side layer 71 is formed with penetration holes 74a, 74b. Ink supplied to the upper side layer reaches the intermediate layer 72 soon passing through the penetration holes 74a, 74b, thus shortening the period of time until ink reaches a lower side layer 73 being a flexible porous resin layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stamp unit, and more particularly, to a first porous resin layer containing a light energy absorbing substance, and a second porous resin harder than the first porous resin layer. The present invention relates to a stamp unit in which a stamp material in which layers are stacked is held by a holder.

[0002]

2. Description of the Related Art As one of the stamp units proposed at present, Japanese Patent Application No. 10-525 proposed by the present applicant has been proposed.
No. 74. The stamp unit includes a grip (handle) member, a holder member, and a skirt member. Then, the holder member and the grip member are connected so that the holder member can move up and down within the skirt member, and a stamp material (a stamp surface forming member) is provided on the lower surface of the holder member by thermal bonding. In such a stamp unit, the printing material is such that a lower layer made of a soft porous resin in which a light energy absorbing material such as carbon black is dispersed, and ink is stored and pressure is uniformly applied to the lower layer. It is formed in a two-layer structure including an upper layer made of a hard porous resin.

In order to make a plate of this stamp material, first, characters and images are printed on the transparent film via a thermal head and a transfer ribbon while a roll-shaped transparent film is conveyed in a stamp manufacturing apparatus, to prepare a positive original. Then, the positive document is opposed to the lower layer of the printing material, and the printing material is pressed with a transparent acrylic plate interposed therebetween.
The holder member is set on the stamp manufacturing device. In this state, when the xenon tube emits light, light is irradiated to the lower layer of the printing material through the positive document. As a result, only the lower layer portion irradiated with light corresponding to the transparent portion of the document is melted and solidified by the heat-generating action of the light energy absorbing material, so that the portion is sealed and the ink does not pass through. Become. On the other hand, the lower layer, which is not irradiated with light and is not melted and solidified, remains as it is without being sealed corresponding to the characters and the like of the document. As a result, a stamp is formed in which the seal portion (non-print portion) and the non-seal portion (print portion) of the desired pattern are mixed on the lower surface of the printing material.

In addition, the holder member can receive the ink pack in a storage portion having a bottom surface on which lattice-like irregularities are formed, and is disposed at the lower end of the grip member by pressing the grip member. The ink pack is opened by sandwiching the ink pack between the plate member and the bottom surface of the unevenness. The ink that has flowed out of the opened ink pack is stored in the upper and lower layers of the stamp material, oozes only from the non-seal portion on the lower surface of the lower layer, and does not ooze from the seal portion. When stamp printing characters and the like, the grip unit is pressed downward with the stamp unit arranged at a desired position on the printing paper. As a result, the holder moves downward, the printing material comes into contact with the printing paper, and ink adheres to the printing paper from the non-seal portion of the lower layer of the printing material, thereby printing characters and the like.

[0005]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application No. Hei.
In the stamp unit of 52574, it is desired to increase the number of times a stamp can be printed by one ink supply using an ink pack. In order to perform stamp printing more than a predetermined number of times by one ink supply using the ink pack, increase the ink amount in the ink pack and make the ink storage amount in the printing material correspond to the ink amount in the ink pack. There is a need. This is because if only the amount of ink in the ink pack is increased, ink will accumulate on the printing material, and ink will leak from the printing surface due to the ink pressure. Then, in order to increase the ink storage amount in the printing material, it is necessary to increase the thickness of the upper layer of the printing material which is a hard porous resin layer. However, since the upper layer of the printing material is a hard porous resin layer having a low ink penetration rate, if the thickness of the upper layer of the printing material is increased, the time from when the ink pack is opened until the ink reaches the lower soft porous resin layer. Requires a long time, and a problem arises in that a rapid stamp printing operation cannot be performed.

Therefore, the main object of the present invention is to quickly remove the ink from the ink pack to the soft material of the printing material even when the thickness of the hard porous resin layer of the printing material is increased in order to achieve the predetermined number of stamps. An object of the present invention is to provide a stamp unit which can be applied to a porous resin layer and can perform a stamp printing operation quickly when ink is supplied by an ink pack.

[0007]

According to a first aspect of the present invention, there is provided a stamp unit, comprising: a first porous resin layer containing a light energy absorbing substance; In a stamp unit in which a stamping material having a harder second porous resin layer laminated thereon is held by a holder portion, the first porous resin layer is provided with the first porous resin layer.
The concave portion which does not reach the porous resin layer of the above is provided.

According to the stamp unit of the first aspect, since the concave portion that does not reach the first porous resin layer is provided in the second porous resin layer (hard porous resin layer), the concave portion is provided from the holder portion. The supplied ink quickly reaches the first porous resin layer (soft porous resin layer) through the recess. Therefore, the time required from the opening of the ink pack to the time when stamp printing can be performed can be significantly reduced. Also, since the concave portion has not reached the first porous resin layer,
There is no hindrance to the adhesion between the first porous resin layer and the second porous resin layer.

In the stamp unit of the present invention, the second porous resin layer is composed of a plurality of layers, and the recess is formed in at least the first of the plurality of layers.
Except for the layer closest to the first porous resin layer, the hole is provided as a hole penetrating at least one layer from the layer farthest from the first porous resin layer.

According to the stamp unit of the present invention, the second porous resin layer is composed of a plurality of layers, and a recess can be formed if at least one layer is provided with a through hole. The operation of forming the concave portion in the conductive resin layer can be simplified. In addition, the second porous resin layer cannot be made too thick in order to prevent excessive “burrs” and “drips” when the second porous resin layer is cut into a predetermined shape. For this reason, there is a limit to the amount of ink stored in one second porous resin layer. Claim 2
According to the above, by forming the second porous resin layer from a plurality of layers, the amount of ink stored in the second porous resin layer can be reduced to a desired amount while preventing excessive “burrs” and “drips” from occurring. It becomes possible to.

Further, in the stamp unit according to the present invention, the concave portion corresponds to a plurality of support members provided apart from each other to support the second porous resin layer provided in the holder portion. It is provided in the position where it does not.

According to the stamp unit of the third aspect, the position of the concave portion does not correspond to the position of the support member, and they are displaced from each other. Therefore, the vicinity of the entrance of the concave portion is not closed by the support member. Therefore, quick ink supply can be realized while supporting the second porous resin layer by the support member.

[0013] In the stamp unit of claim 4,
The holder portion is provided with ink replenishing holes penetrating from the vicinity of the upper end thereof to the vicinity of a portion facing the second porous resin layer in a number corresponding to the size of the holder portion.

According to the stamp unit of the present invention, since the number of ink replenishing holes corresponding to the size of the holder portion is provided in the holder portion, the ink replenishing holes are stored in the first and second porous resin layers. Even if the ink runs out, the user can easily and quickly replenish the ink without using an ink pack.
In addition, it is preferable that the ink replenishing hole is provided in the vicinity of the periphery of the holder in order to facilitate the ink replenishment by the user.

Further, in the stamp unit of the present invention, the recess is provided at a position corresponding to the ink replenishing hole. According to the stamp unit of the fifth aspect, the ink replenished from the ink replenishing hole quickly passes through the concave portion to the first position.
, The ink can be more quickly replenished to the printing material.

Further, in the stamp unit of the present invention, the peripheral portion of the second porous resin layer on the side opposite to the first porous resin layer may be arranged such that the peripheral portion of the first porous resin layer moves outwardly toward the first porous resin layer. Inclined toward the conductive resin layer side.

According to the stamp unit of the present invention, the peripheral portion of the surface of the second porous resin layer opposite to the first porous resin layer is closer to the first porous resin layer toward the outside. The ink supplied to this surface is likely to flow into the inclined peripheral portion. For this reason, the ink that tends to be present in the central portion spreads uniformly not only in the central portion but also in the peripheral portion, and it is possible to suppress the occurrence of printing unevenness such as shading during stamp printing.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic exploded perspective view of a stamp unit according to the present embodiment. FIG. 2 is a side view of the stamp unit in a state where an unopened ink pack is stored in an ink pack storage section. It is sectional drawing. FIG. 3 is a side sectional view of the stamp unit immediately after the ink pack in the ink pack storage unit is opened. As shown in FIGS.
The stamp unit 1 according to the present embodiment includes a skirt member 2 that supports the entire stamp unit 1 during stamp printing.
And a holder member 4, which is slidably arranged in the skirt member 2 in the vertical direction and has a lower end portion on which the stamp material 3 is held by thermal bonding, and is fitted and connected to the holder member 4, and the holder member is used for stamp printing. A grip member 5 for moving the printing material 4 downward to press the printing material 3 against printing paper (not shown), and a cap member 60 for covering and protecting the printing material 3 of the holder member 4 are provided.

The ink pack storage section 22 of the holder member 4 can store an ink pack 6 in which ink is filled in a bag-like pack formed of a film material. The ink pack 6 is filled with an amount of ink substantially equal to the amount of ink that can be stored in the printing material 3. Then, a thick paperboard 37 can be arranged between the ink pack 6 and the bottom surface of the grip member 5. As the above-mentioned film material, polyethylene, polypropylene, polyester, nylon or the like is used alone or in combination of two or more kinds.

Next, the skirt member 2 of the stamp unit 1 will be described with reference to FIGS. 4 is a side view of the skirt member 2, FIG. 5 is an end view of the skirt member 2, and FIG. In these figures, the skirt member 2 has a substantially rectangular insertion hole 10 in plan view, and the insertion hole 10 is provided with an inner wall 11 through which the holder member 4 is slidably inserted. The skirt member 2 includes an upper skirt portion 13 having an outer wall 12 formed integrally with the inner wall 11 outside the inner wall 11.
And a lower skirt portion 15 having an outer wall 14 formed so as to be slightly flared continuously from the outer wall 12.

Both end surfaces (left and right end surfaces) of the upper skirt portion 13
In the position above the inner wall 11, the holder member 4 is
A spring locking portion 17 is formed to lock one end of the torsion spring 16 so as to constantly urge the inside upward. At a position obliquely below the spring locking portion 17, a semilunar positioning projection 18 is formed for externally inserting the coil portion of the torsion spring 16 and positioning the coil portion. Further, the inclined protrusions 3 formed on both end surfaces of the holder member 4 are provided at substantially the center of the inner wall 11.
5 (to be described later) is vertically slidably inserted thereinto.
Are formed. When the holder member 4 moves downward during stamp printing, the vertical groove 19 holds the holder member 4.
To guide the inclined projection 35 in the vertical direction. In addition, between the vertical groove 19 and the positioning projection 18, the torsion spring 16 is restricted from moving in the direction away from the end face so that the engagement between the torsion spring 16 and the lower end of the inclined projection 35 is not released. For this purpose, a spring displacement suppressing member 9 having an opening (not shown) into which the torsion spring 16 is inserted is provided.

The lower skirt member 15 is placed on the printing paper at the time of stamp printing and supports the entire stamp unit 1 on the printing paper.
Are provided at the lower end positions of the four corners of the outer wall 14 which constitutes the above. At the center of the four surfaces of the outer wall 14 of the lower skirt member 15, a downward arrow 21 indicating the stamp printing direction is formed.

Next, the holder member 4 will be described with reference to FIGS.
1 will be further described. 7 is a perspective view of the holder member 4, FIG. 8 is a side view of the holder member 4, FIG. 9 is a side sectional view of the holder member 4, FIG. 10 is a plan view, and FIG. 11 is a bottom view. In these figures, the holder member 4 is formed integrally with an upper holder portion 30 and a lower holder portion 31 according to the respective shapes of the upper skirt portion 13 and the lower skirt portion 15 of the skirt member 2. The upper holder portion 30 includes a peripheral wall 3 that forms a substantially rectangular cylindrical body in plan view.
The front wall and the rear wall of the peripheral wall 32 (FIG. 8)
In the upper part, only one of them is shown), three long-hole-shaped concave grooves 33 are formed horizontally aligned. In addition, between the three concave grooves 33, wedge-shaped regulating projections 34 are provided which are inclined downward and outward from the wall surface of the peripheral wall 32. Here, a rib locking groove 54 (described later) of the grip member 5 is fitted into each of the concave grooves 33, whereby the holder member 4 and the grip member 5 are fixedly connected. When the holder member 4 is moved downward during stamp printing, the regulating protrusion 34 contacts the upper edge of the outer wall 12 of the upper skirt portion 13 of the skirt member 2 to regulate the amount of downward movement of the holder member 4. Perform the action.

On both end surfaces (left and right end surfaces in FIG. 8) of the peripheral wall 32 of the upper holder portion 30, there are provided wedge-shaped inclined projections 35 inclined outward and downward from the wall surface of the peripheral wall 32. When the holder member 4 is inserted from below the skirt member 2, the inclined protrusion 35 is slidably inserted up and down in the vertical groove 19 of the upper skirt portion 13. , The other end of the torsion spring 16 is locked. Thereby, the holder member 4 is slidable vertically in the skirt member 2 by the cooperation of the inclined protrusion 35 and the vertical groove 19, and one end of the torsion spring 16 is engaged with the upper skirt portion 13 by the spring engagement. The holder member 4 is constantly biased upward in the skirt member 2 based on the fact that the holder member 4 is locked by the portion 17 and the other end is locked by the lower end of the inclined protrusion 35.

The peripheral wall 3 of the upper holder 30 of the holder member 4
The bottom surface 23 of the ink pack storage portion 22 which is a substantially rectangular parallelepiped region surrounded by 2 is flat, and an ink supply hole 24 communicating with the lower holder portion 31 is provided at the center. A cutting rib 25 for cutting and opening the ink pack 6 is provided in the ink supply hole 24.
It is provided so as to slightly protrude.

On the inner wall surface of the ink pack accommodating portion 22, four long ink supply holes 2 extending from the upper end of the holder member 4 to the bottom surface of a support column 27 (see FIG. 11) described later.
6 are provided. The ink replenishment hole 26 is provided by the user when the storage amount of the ink supplied by the ink pack 6 in the stamp material 3 becomes small.
It is used when preliminary ink supply is performed without using the. At this time, the ink is injected from the ink supply hole 26 with the grip member 5 removed.

Further, as shown in FIG.
A large number of columnar support columns 27 each having a length of several mm are arranged in a lattice shape on the lower holder portion 31. The support column 27 extends from a lower end of the lower holder portion 31 to a position where it is slightly retracted and comes into contact with the stamp material 3 held by the holder member 4, and the bottom surface of the support column 27 is substantially one plane. Is formed. Further, the lower holder portion 31 is formed integrally and continuously from the upper holder portion 30, and has a peripheral wall 38 which is slightly larger outside the peripheral wall 32. The holder member 4 is formed of any one of ABS resin, polyacetal copolymer, polyolefin resin such as polypropylene, polyethylene, and nylon, and PC resin.

When the grip member 5 is depressed, the cutting rib 25 presses the ink pack 6 between itself and the cardboard plate 37,
The ink pack 6 is broken and opened. In order to reliably open the ink pack 6, the cutting rib 25 is used.
Are formed sharply. The ink supply hole 24 guides the ink flowing out of the ink pack 6 opened by the cutting rib 25 downward.
As a result, the ink is impregnated into the printing material 3.

Outside the longitudinal wall of the peripheral wall 38 constituting the lower holder portion 31, an inclined groove 43 is formed in a wedge shape inward at a substantially central position thereof, and is formed on both sides of the inclined groove 43. Has one or two detection grooves 44 formed therein. Here, the inclined groove 43 is provided by the present applicant in Japanese Patent Application No.
This groove is used to set the holder member 4 at a predetermined plate making position in the stamp manufacturing apparatus when forming a stamp from the stamp material 3 using the stamp manufacturing apparatus disclosed in the specification and drawings of Japanese Patent No. 249983. At this time, the inclined groove 43
Since both sides are formed on the inclined surface, even when the positional relationship between the positioning mechanism and the holder member 4 in the stamp manufacturing apparatus is slightly displaced, the holder is formed based on the cam action between the positioning member of the positioning mechanism and the inclined surface. Member 4 is
The positioning member is moved so as to contact the center position of the inclined groove 43. Thereby, the holder member 4
It is set at a predetermined plate making position of the stamp manufacturing apparatus. Further, the number and the position of the detection grooves 44 are changed according to the size of the holder member 4, and the size of the holder member 4 is specified by cooperation with a groove sensor provided in a positioning mechanism of the stamp manufacturing apparatus. Used to The positions of the inclined groove 43 and the detection groove 44 on one wall surface of the peripheral wall 38 are different from those of the inclined groove 43 on the other wall surface.
It is set so as to be rotationally symmetric with the formation position of the detection groove 44. This is because when the holder member 4 is set at a predetermined plate making position by the positioning mechanism of the stamp manufacturing apparatus, plate making of the stamp material 3 can be performed even when the front wall and the rear wall are set upside down.

As shown in FIG. 8, a pair of locking projections 45 are formed at lower positions on the longitudinal wall of the peripheral wall 38. The locking projection 45 is locked in a locking groove 62 of a cap member 60 described later, and is used for attaching the cap member 60 to a lower end of the lower holder portion 31.
Thus, the seal surface of the seal material 3 held at the lower end of the peripheral wall 38 is protected by the cap member 60.

Next, the grip member 5 will be described with reference to FIGS.
This will be described with further reference to FIG. 12 is a side view of the grip member 5, FIG. 13 is a bottom view of the grip member 5, and FIG.
2 is a cross-sectional view of the grip member 5 in the width direction.

In these figures, on the upper surface of the grip member 5, there is formed a label sticking section 50 for sticking a label or the like indicating the stamp content formed on the stamp material 3 as described above. Further, inside the grip member 5, from the lower surface of the upper wall, as shown in FIGS.
2 is formed with an insertion portion 51 to be inserted therein. The insertion portion 51 has a function of pressing the ink pack 6 disposed in the holder member 4 via the cardboard 37.

Further, the insertion portion 51 is shown in FIG.
As shown in FIG. 3, it has a basically rectangular shape, and four concave portions 52 are formed at positions opposing each other on both sides. The concave portion 52 is used when the insertion portion 51 of the grip member 5 is inserted into the peripheral wall 32 of the holder member 4.
It is provided at a position corresponding to the ink replenishing hole 26 formed along the peripheral wall 32. It should be noted that the two pairs of the concave portions 52 are formed so that the wall portion of the ink replenishing hole 26 can be inserted no matter what state the insertion portion 51 of the grip member 5 is inserted into the peripheral wall 32. This is so as not to cause any trouble. A plurality of (twelve in FIG. 13) ribs 53 are formed in the inner wall surface of the grip member 5 in the vertical direction, and a rib locking groove 54 is provided near the lower end of each rib 53. It is formed integrally. The rib locking groove 54 is fitted into each of the concave grooves 33 formed on the upper portion of the outer surface of the peripheral wall 32, and thereby the holder member 4 and the grip member 5 are integrally connected. .

Next, a cap member 60 attached to the lower end of the lower holder 31 of the holder member 4 will be described with reference to FIG.
5 and FIG. FIG. 15 is a side view of the cap member 60, and FIG. 16 is a side sectional view of the cap member 60. In each of the figures, the cap member 60 has a box shape with an open top, and is provided at substantially the center of both sides of the outer wall when the cap member 60 is attached to the holder member 4, as shown in FIG. In addition, a grip portion 61 that is gripped by a finger when being removed is formed. Also,
A pair of locking grooves 62 for locking a pair of locking projections 45 formed on the peripheral wall 38 is provided on both inner wall surfaces of the cap member 60. Each locking groove 6 of the cap member 60
The cap member 60 is attached to the peripheral wall 38 by being locked by the locking projections 45 of the peripheral wall 38, thereby protecting the stamped surface of the stamp material 3 held at the lower end of the peripheral wall 38 via the cap member 60. Is what is done.

Further, as shown in FIG.
Has four recesses 28 corresponding to the planar shape of the ink pack storage section 22 of the holder member 4 and is formed to have a size slightly larger than the inner dimension of the ink pack storage section 22. As shown in FIG.
In a state where the ink pack 6 is disposed inside the grip member 5,
When the holder member 4 is moved downward by the
By the action of 7, the pressing force from the grip member 5 is applied substantially uniformly to the ink pack 6. Thus, the flat bottom surface 23 of the ink pack storage unit 22 and the thick paperboard 3
7, the ink pack 6 is sandwiched between the
Thereby, the ink pack 6 is cut and opened. The ink pack 6 is crushed between the two planes, so that the ink in the ink pack 6 flows downward from the ink supply holes 24 and is supplied to the stamp material 3. As described above, by sandwiching the ink pack 6 between the two flat surfaces, namely, the bottom surface 23 of the ink pack storage section 22 and the thick paperboard 37, the ink inside the ink pack 6 is allowed to flow out without leaving any waste, and the ink on the printing material 3 is produced without waste. Can be supplied.

When the thick paper board 37 having the above-mentioned size is arranged above the ink pack 6, the thick paper board 3
Since the side edges of 7 can be easily deformed, the thick paperboard 37 can be easily arranged inside the holder member 4 and the thick paperboard 37 can be fixed at an arbitrary position inside the holder member 4. Becomes Based on this, it is possible to perform transportation or the like in a state where the ink pack 6 is arranged inside the holder member 4. Further, since the cardboard 37 has an ink absorbing ability, as described later, when the grip member 5 is moved downward to open the ink pack 6 in the holder member 4, It is possible to prevent the ink from leaking to the outside of the stamp unit 1 by absorbing the ink flowing upward.

Next, the stamp unit 1 of the present embodiment
FIGS. 18 and 19 show the stamp material 3 used in FIG.
This will be described with further reference to FIG. As shown in these figures, the stamp material 3 has an upper layer 71 made of a hard porous resin having a thickness of 3 mm, for example, polyvinyl formal having a porosity of about 90%, and a thickness 2 m made of the same material as the upper layer 71.
and a lower layer 73 made of a soft porous resin which is a urethane-based resin having a porosity of about 65% in which a light energy absorbing material such as carbon black is dispersed. It is formed in a layer structure. The intermediate layer 72 and the lower layer 73 are fixed to each other with an adhesive applied in a lattice-like manner, but the upper layer 71 and the intermediate layer 72 are in a free state in which they are not artificially bonded.

The use of the three-layer structure of the stamp material 3 has the following advantages. That is, as described above, it is desired to increase the number of times a stamp can be printed by one ink supply using the ink pack 6, and for that purpose, it is necessary to increase the thickness of the hard porous resin layer of the stamp material. . However, when the thickness of the hard porous resin layer is increased, excessive "burr" is generated when cutting into a predetermined shape.
And who. If such “burrs” or “shades” are excessive, problems such as the inability to obtain a resin layer having a desired shape and the necessity of post-processing after cutting are caused. Therefore, in the present embodiment, the “burr” is obtained by securing the entire thickness of the hard porous resin layer while suppressing the thickness per layer by using a plurality of hard porous resin layers.
In addition to avoiding the problem of "wandering", more ink than desired is stored in the hard porous resin layer.

The upper layer 71 is provided with a plurality of through holes 74a and 74b each having a circular cross section having a diameter of 1 to 2 mm (a total of 14 through holes in this embodiment). That is, when the upper layer 71 and the intermediate layer 72 are considered as one hard porous resin layer, the hard porous resin layer has a concave portion that does not reach the lower layer 73. These through-holes 74a and 74b are located at positions where they do not correspond to the support pillars 27 shown in FIG. 11 when the stamp material 3 is held by the holder member 4, and the distance between adjacent through-holes is too large. Or they are evenly provided so as not to be too small. In addition, the through hole 74b is
1 is provided at a position corresponding to the ink supply hole 26 shown in FIG.

As described above, in the stamp unit 1 of the present embodiment, since the through-holes 74a and 74b are provided in the upper layer 71 of the three-layered stamp material 3, the stamp unit 1 is supplied from the ink supply hole 24 and The ink spread on the layer 71 reaches the intermediate layer 72 immediately through the through holes 74a and 74b. Then, the ink that has reached the intermediate layer 72 is
It slowly penetrates the inside and reaches the lower layer 73. Therefore, even when the stamp material 3 has a three-layer structure and the total thickness of the hard porous resin layer is large as in the present embodiment, the ink reaches the lower layer 73 which is a soft porous resin layer. The time up to this is almost the same as the case where the hard porous resin layer has a two-layer structure and the total thickness of the hard porous resin layer is relatively small. Therefore, according to the stamp unit 1 of the present embodiment, the amount of ink stored in the stamp material 3 is increased so that, for example, 5,000 to 10,000 times of stamp printing can be performed, and the lower layer 73 is moved from the time of opening the ink pack to the lower layer 73. The time required until the ink reaches (i.e., when stamp printing is possible) can be greatly reduced.

In order to form the hard porous resin layer from the upper layer 71 and the intermediate layer 72 and provide the through holes 74a and 74b only in the upper layer 71 as in the present embodiment, There are also advantages such as: That is, if the recess provided in the hard porous resin layer is a through hole reaching the lower layer 73, the intermediate layer 72 and the lower layer 73 are formed at the through hole.
Are not adhered to, and these adhesions are inhibited.
Therefore, the concave portion provided in the hard porous resin layer is
It is necessary not to reach 3. Therefore, FIG.
As shown in (b), if the hard porous resin layer 64 is composed of only one layer, a recess 66 having a depth halfway through the thickness of the hard porous resin layer 64 must be formed. And the production becomes complicated. Since the hard porous resin layer is composed of two layers as in the present embodiment, through holes 74a and 74b are provided in the upper layer 71 and the upper layer 71 and the intermediate layer 72 are overlapped to form the hard porous resin layer. It is possible to easily form a concave portion in the resin layer.

Further, the stamp unit 1 of the present embodiment
Then, the supporting columns 2 of the through holes 74a and 74b and the holder member 4
7 do not correspond to each other and are provided at positions shifted from each other, so that the vicinity of the entrances of the through holes 74a and 74b is not closed by the support pillar 27. Therefore, the ink from the ink supply hole 24 can enter the through holes 74a and 74b without being disturbed by the support pillar 27, so that the ink can be supplied while the upper layer 71 is supported by the support pillar 27. Can be.

Further, the stamp unit 1 of the present embodiment
Is provided with an ink replenishing hole 26 penetrating from the vicinity of the upper end thereof to the vicinity of a location facing the upper layer 71. Although the number of the ink supply holes 26 is four in the present embodiment, it is preferable that the number be changed according to the size of the holder member 4. For example, as shown in FIG. 20A, when the holder member 76 is small, the number of the ink supply holes 77 may be one. Further, as shown in FIG. 20B, when the holder member 78 is smaller than the holder member 4 of the present embodiment, only two ink replenishing holes 79 are required. Further, as shown in FIG. 20C, when the holder member 80 is larger than the holder member 4 of the present embodiment, it is preferable that the number of the ink supply holes 79 is six. In this way, if the ink replenishing holes are provided in a number corresponding to the size of the holder member, even if the ink stored in the stamp material 3 runs out, the user can easily and quickly supply the ink. You will be able to replenish. In the present embodiment and the examples of FIGS. 20 (a), (b), and (c), the ink replenishing holes 77, 79 are provided in the holder portions 76, 78, 80 for facilitating ink replenishment by the user. It is provided near the periphery.

Further, the stamp unit 1 of the present embodiment
The through hole 74b is provided at a position corresponding to the ink supply hole 26. Therefore, the ink replenished from the ink replenishing hole 26 reaches the intermediate layer 72 immediately through the through hole 74b, and further slowly penetrates into the intermediate layer 72 to reach the lower layer 73. Therefore, even if the hard porous resin layer has a three-layer structure, ink can be replenished more quickly.

Further, the stamp unit 1 of the present embodiment
Then, as shown in FIG. 21, the upper layer 71 of the stamp material 3 is arranged such that the "who" generated by cutting the hard porous resin layer as described above is on the upper side. That is, the peripheral portion 7 of the surface of the stamp material 3 opposite to the lower layer 73 of the upper layer 71.
1a is inclined toward the lower layer 73 as going outward. With this configuration, the ink supply holes 2
The ink supplied to the support pillars 27 of the upper layer 71 through 4 easily flows into the inclined peripheral edge portion 71a. Therefore, the ink which tends to be present in the central portion is distributed not only to the central portion of the upper layer 71 but also to the peripheral portion 71a, and it is possible to suppress the occurrence of uneven printing such as shading at the time of stamp printing. .

The shape of the recess provided in the hard porous resin layer may not be circular in cross section as in the above-described embodiment. For example, a slit-shaped recess 85 as shown in FIG. 22 may be provided in the hard porous resin layer 84. The hard porous resin layer 84 may be composed of two layers, upper and lower, or may be composed of only one layer. In FIG. 22, the slit-shaped recess 85 is provided at a position that does not correspond to the support column 27 of the holder member 4, and a position corresponding to the ink replenishing hole 26 is formed so that ink can pass easily. The large diameter portion 86 is provided.

To manufacture the stamp unit 1 of the present embodiment, first, the holder member 4 is set at a predetermined plate making position of a stamp manufacturing apparatus (not shown). At this time, the holder member 4 is set at a predetermined plate making position of the stamp manufacturing apparatus based on the cam action between the inclined surface of the inclined groove 43 formed in the lower holder portion 31 and the positioning member of the positioning mechanism. Further, the size of the holder member 4 is specified by cooperation of each detection groove 44 and a groove sensor provided in the positioning mechanism.

Then, characters and images are printed on the transparent film via the thermal head and the transfer ribbon while the roll-shaped transparent film is conveyed in the stamp manufacturing apparatus, thereby forming a positive original. Further, the holder member 4 is set with a transparent acrylic plate interposed therebetween so that the positive document and the lower layer of the printing material 3 face each other. In this state, when the xenon tube emits light, the light is applied to the lower layer 73 of the printing material 3 through the positive document. As a result, only a part of the lower layer 73 irradiated with light corresponding to the transparent portion of the document is melted by the heat-generating action of the light absorbing material, then solidified and sealed. On the other hand, the lower layer 73 of the portion of the stamp material 3 that has not been melted and solidified remains as it corresponds to the characters of the document. As a result, a stamp in which a seal portion and a non-seal portion are mixed is formed on the lower surface of the stamp material 3.

After the plate making of the stamp material 3 is completed, the upper skirt 13
The coil portion of the torsion spring 16 is positioned on the positioning projection 18 in advance on both end surfaces of the torsion spring 16.
The holder member 4 is inserted from below into the insertion hole 10 of the skirt member 12 having one end locked by the spring locking portion 17. At this time, the inclined protrusions 35 formed on both end surfaces of the peripheral wall 32 of the upper holder portion 30 in the holder member 4
The other end of the torsion spring 16 is slid upward in the vertical groove 19 of the skirt member 2 and the other end of the torsion spring 16 is moved to the lower end of each of the inclination protrusions 35 at the time when the inclined protrusion 35 has passed over the other end of the torsion spring 16 according to its wedge shape. Locked. In this state, the holder member 4
Are urged upward by the biasing force of the torsion spring 16 in the skirt member 2 and can slide the holder member 4 downward against the biasing force of the torsion spring 16.

After assembling the holder member 4 and the skirt member 2 as described above, the ink pack 6 is stored in the ink pack storage section 22 and the thick paperboard 3 is placed on the ink pack 6.
After the 7 is arranged, the insertion portion 51 of the grip member 5 is inserted into the peripheral wall 32 of the holder member 4 (the state shown in FIG. 2).
As described above, when the grip member 5 is further pressed while the insertion portion 51 is inserted into the peripheral wall 32, the ink pack 6 in the holder member 4 is pinched between the cardboard 37 and the cutting rib 25. To go. At this time, the pressing force applied to the ink pack 6 is substantially uniformly applied to the ink pack 6 based on the action of the cardboard 37. Accordingly, the ink pack 6 is broken and opened at a position where the ink pack 6 comes into contact with the cutting rib 25, whereby the ink pack 6 is opened at a substantially central position corresponding to the formation position of the cutting rib 25, and the ink pack 6 flows out of the ink pack 6 The ink can be dispersed substantially uniformly around the cutting rib 25. Also, the cardboard 37
Has the ink absorbing ability, so as described above, when the grip member 5 is moved downward to open the ink pack 6 in the holder member 4, the ink flows out of the ink pack 6 to the upper side thereof. It is possible to prevent the ink from leaking out of the stamp unit 1 by absorbing the ink.

When the ink pack 6 is opened via the cutting rib 25, the ink flows out at once, but the space formed between the peripheral wall 32 and the cutting rib 25 is It is a storage portion for the ink flowing out of the ink container 6, so that even when the ink flows out at once when the ink pack 6 is opened, it is possible to prevent the ink from leaking out of the holder member 4 to the outside.

The ink that has flowed out of the ink pack 6 is guided downward from the ink supply hole 24 formed around the cutting rib 25 and temporarily accumulates on the stamp material 3 (the state shown in FIG. 3). The stamp material 3 is quickly impregnated by the action of the through holes 74a and 74b. At this time, the ink supply holes 24
Are formed around the cutting rib 25 and are provided below the ink supply holes 24 with support columns 27 spaced apart from each other, so that the ink from the ink pack 6 can be evenly distributed over the entirety of the stamp material 3. Can be impregnated.

When the ink pack 6 is opened by moving the grip member 5 downward as described above, the rib locking groove 54 formed at the lower end of each of the ribs 53 of the grip member 5 becomes a holder member. The holder member 4 and the grip member 5 are integrally connected to each other by fitting into the respective concave portions 33 formed in the peripheral wall 32 of the holder 4. Therefore, when the stamp material 3 is impregnated with the ink as described above and then stamp printing of characters or the like is performed according to the stamp formed on the stamp material 3, the grip member 5 and the holder member 4 move integrally. Stamp printing can be performed more.

When the amount of ink impregnated in the stamp material 3 becomes small and it becomes impossible to perform stamp printing at an appropriate density, the grip member 5 is removed from the holder member 4 to remove the thick paperboard 37 and the ink. The stamp printing is restarted by removing the bag-shaped pack of the ink pack 6 from the holder member 4 and arranging a new ink pack 6 filled with ink in the holder 4 and performing the same operation as described above. Can be. Further, without removing the ink pack 6 and the thick paperboard 37, the ink replenishing holes 26 formed in one inner wall surface of the peripheral wall 32 of the holder member 4 can be formed.
It is also possible to replenish the ink from and restart stamp printing.

As described above, in the stamp unit 1 according to the present embodiment, when supplying ink to the stamp material 3, the grip member 5 is pressed downward with the ink pack 6 disposed inside the holder member 4. By doing so, the ink pack 6 in the holder member 4 is pressed between the thick paperboard 37 and the cutting rib 25 and is opened. Thus, the ink in the ink pack 6 flows downward from the ink supply hole 24 and is supplied to the stamp material 3. in this way,
The ink can be easily supplied to the stamp material 3 with one touch.

In addition, it is necessary to supply ink to the printing material 3 due to the fact that the amount of ink impregnated in the printing material 3 is reduced by repeating the stamp printing of the text and the like and the density of the printing characters and the like is reduced. In such a case, stamp printing can be restarted by replenishing ink by a simple operation of simply replacing a bag-shaped pack that has run out of ink with a new ink pack 6.

Further, since the cutting rib 25 which comes into contact with the ink pack 6 and the ink supply hole 24 for supplying the ink to the printing material 3 are formed, the ink pack 6 can be easily and quickly opened by the cutting rib 25. In addition, the ink flowing out of the ink pack 6 can be rapidly impregnated into the stamp material 3 through the ink supply holes 24.

The ink flowing out of the ink pack 6 is supplied to an ink supply hole 24 formed around the cutting rib 25.
The ink supply hole 24 is formed around the cutting rib 25 and is provided below the ink supply hole 24 with support columns 27 spaced apart from each other. Therefore, the ink from the ink pack 6 is uniformly dispersed over the entire bottom of the holder member 4, whereby the ink can be uniformly impregnated over the entire printing material 3.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the scope of the present invention. It is. For example, a structure having only one hard porous resin layer or three or more hard porous resin layers as described with reference to FIG. 19B is also one embodiment of the present invention. In addition, the shape and arrangement of the concave portions of the hard porous resin layer can be appropriately changed.

[0061]

As described above, according to the stamp unit of the first aspect, the concave portion that has not reached the first porous resin layer is provided in the second porous resin layer (hard porous resin layer). Therefore, the ink supplied from the holder portion quickly reaches the first porous resin layer (soft porous resin layer) through the concave portion. Therefore, the time required from the opening of the ink pack to the time when stamp printing can be performed can be significantly reduced. Further, since the recess does not reach the first porous resin layer, the adhesion between the first porous resin layer and the second porous resin layer is not hindered.

According to the stamp unit of the second aspect, the second porous resin layer is composed of a plurality of layers, and if at least one layer is provided with a through hole, a recess can be formed. Can be simplified in forming the concave portions in the porous resin layer. In addition, the second porous resin layer causes excessive “burrs” when it is cut into a predetermined shape.
The thickness cannot be made too large in order to prevent the occurrence of "nobody" or "drowsiness". Therefore, the amount of ink stored in one second porous resin layer is limited. According to claim 2, by forming the second porous resin layer from a plurality of layers, the amount of ink stored in the second porous resin layer while preventing excessive “burrs” and “drips” from occurring. In a desired amount.

According to the stamp unit of the third aspect, the position of the concave portion does not correspond to the position of the support member, and they are displaced from each other. Therefore, the vicinity of the entrance of the concave portion may be closed by the support member. Absent. Therefore, quick ink supply can be realized while supporting the second porous resin layer by the support member.

Further, according to the stamp unit of the present invention, since the number of ink supply holes corresponding to the size of the holder portion is provided in the holder portion, the ink replenishment holes are stored in the first and second porous resin layers. Even when the used ink runs out, the user can easily and quickly replenish the ink without using an ink pack.

Further, according to the stamp unit of the present invention, the concave portion is provided at a position corresponding to the ink replenishing hole, and the ink replenished from the ink replenishing hole quickly passes through the concave portion to the first porous member. Reaches the conductive resin layer,
The ink can be replenished to the printing material more quickly.

Further, according to the stamp unit of the present invention, the peripheral portion of the second porous resin layer on the side opposite to the first porous resin layer moves outwardly toward the first porous resin layer. Since the ink is inclined toward the layer, the ink supplied to the surface easily flows into the inclined peripheral portion. For this reason, the ink that tends to be present in the central portion spreads uniformly not only in the central portion but also in the peripheral portion, and it is possible to suppress the occurrence of printing unevenness such as shading during stamp printing.

[Brief description of the drawings]

FIG. 1 is an overall exploded perspective view of a stamp unit according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the stamp unit in FIG. 1 when an ink pack is not opened.

FIG. 3 is a side sectional view of the stamp unit of FIG. 1 immediately after opening an ink pack.

FIG. 4 is a side view of the skirt member shown in FIG. 1;

FIG. 5 is an end view of the skirt member shown in FIG. 1;

FIG. 6 is a side sectional view of the skirt member shown in FIG. 1;

FIG. 7 is a perspective view of the holder member shown in FIG. 1;

FIG. 8 is a side view of the holder member shown in FIG.

FIG. 9 is a side sectional view of the holder member shown in FIG. 1;

FIG. 10 is a plan view of the holder member shown in FIG. 1;

FIG. 11 is a bottom view of the holder member shown in FIG. 1;

FIG. 12 is a side view of the grip member shown in FIG. 1;

FIG. 13 is a bottom view of the grip member shown in FIG. 1;

FIG. 14 is a sectional view of the grip member shown in FIG. 1;

FIG. 15 is a side view of the cap member shown in FIG. 1;

FIG. 16 is a side sectional view of the cap member shown in FIG. 1;

FIG. 17 is a plan view of the cardboard shown in FIG. 1;

FIG. 18 is an exploded perspective view of the stamp shown in FIG. 1;

19A is a sectional view of the stamp material of FIG. 18, and FIG. 19B is a modified example thereof.

FIG. 20 is a view showing another example of the holder member shown in FIG. 1;

FIG. 21 is an enlarged cross-sectional view illustrating a state in which a stamp material is held by a holder member.

FIG. 22 is a plan view showing a hard porous resin layer of a stamp according to another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 stamp unit 2 skirt member 3 stamping material 4 holder member 5 grip member 6 ink pack 22 ink pack storage section 24 ink supply hole 26 ink refill hole 27 support column 37 thick paperboard 71 upper layer 72 middle layer 73 lower layer 74a, 74b penetrating Hole

Claims (6)

[Claims] A first material containing a light energy absorbing material.
And a stamp unit in which a stamping material in which a second porous resin layer harder than the first porous resin layer and a second porous resin layer are laminated is held by a holder unit. A stamp unit, wherein a concave portion that does not reach the first porous resin layer is provided in the resin layer. 2. The method according to claim 1, wherein the second porous resin layer is formed of a plurality of layers, and the recess is formed of the first porous resin layer except at least a layer closest to the first porous resin layer. The stamp unit according to claim 1, wherein the hole is provided as a hole penetrating at least one layer from a layer farthest from the porous resin layer. 3. The device according to claim 1, wherein the concave portion is provided at a position that does not correspond to a plurality of support members that are spaced apart from each other to support the second porous resin layer provided on the holder portion. The stamp unit according to claim 1, wherein: 4. An ink replenishing hole penetrating from the vicinity of the upper end to the vicinity of a location facing the second porous resin layer in a number corresponding to the size of the holder. The stamp unit according to any one of claims 1 to 3, wherein: 5. The stamp unit according to claim 4, wherein the recess is provided at a position corresponding to the ink replenishing hole. 6. A peripheral portion of a surface of the second porous resin layer opposite to the first porous resin layer is inclined toward the first porous resin layer as going outward. The stamp unit according to any one of claims 1 to 5, wherein