JP2980191B2 - Stamp unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stamp unit having a stamp member formed by covering an ink impregnated body with a heat-sensitive stencil sheet and perforating it in a shape such as a character. The non-uniform distribution of the ink impregnated in the ink body is prevented by configuring the long stamp unit so that it does not stand still in a state of standing upright along the longitudinal direction when not used. And a stamp unit capable of constantly and stably printing characters and the like.

[0002]

2. Description of the Related Art Conventionally, there has been a stamp capable of printing a company name, an address, and various other character strings on a paper surface. This type of stamp is used for stamp printing on a rubber stamp surface. A character string is printed on the surface of the paper with ink applied each time. Such stamps are usually expensive because they are individually manufactured according to the order, and generally have a long period of time from order to acquisition.

On the other hand, conventionally, a pattern such as a desired character string can be pierced by infrared irradiation or a thermal head, and various patterns such as a character string, a figure, and a mark can be printed by transmitting ink from the perforation group. Heat-sensitive stencil paper applicable to stencils has been put to practical use.

Under such circumstances, the applicant of the present application has disclosed in the specification and drawings attached to the application of Japanese Patent Application No. 5-329656 a stamp of a heat-sensitive stencil sheet obtained by covering an ink impregnated body with a heat-sensitive stencil sheet. Used as a member,
We have proposed a stamp unit that can be replaced with a stamp whose stamp face is made of rubber like a conventional stamp.

That is, in the stamp unit described in the specification and drawings of Japanese Patent Application No. 5-329656, a lower surface of an ink-impregnated body is covered with a heat-sensitive stencil sheet for a rectangular holding member having a rectangular parallelepiped shape. A stamp portion having a stamp member having a stamped surface portion is detachably attached, and a long skirt member having a skirt portion surrounding the periphery of the stamp portion is interposed between the grip member and the stamp portion. Configuration. Then, if a pattern such as a desired character string is pierced by a thermal head on the heat-sensitive stencil sheet of the stamp member, the desired character string or the like pattern is printed many times as in a normal rubber stamp. A stamp unit that can be used is obtained.

When the stamp unit constructed as described above is not used, the long side surface of the long grip member and the long side surface of the long skirt member are in contact with the desk surface, ie, the stamp unit. Is placed on a desk in a state where it is laid down, or a state in which the short side surface of the gripping member and the short side surface of the skirt member are in contact with the top surface of the desk, that is, the stamp unit is in a vertical state. And placed on the desk.

[0007]

When the stamp unit is not used, and the stamp unit is placed on a desk surface in a state of being laid down, the width of the stamp member (in the short side direction of the skirt member). Width) is sufficiently smaller than its length (length in the long side direction of the skirt member), and the range in which the ink in the ink impregnated body can move due to its gravity is narrow. However, there is almost no fear that the gravity causes uneven unevenness in the width direction of the stamp member.

[0008] However, when the stamp unit is placed on the desk surface in the vertical state as described above, the length of the stamp member is considerably larger than its width.
Therefore, since the range in which the ink in the ink impregnated body can move by its weight is widened, the ink in the ink impregnated body is moved toward the desk surface direction (downward) via the gravity. I will. From this, when the stamp unit is placed on the desk surface in a state where the stamp unit is vertically set for a long time, the ink in the ink impregnated body moves to the lower side and is biased, and as a result, When a pattern such as a character string is printed by the stamp unit, characters perforated in the upper portion of the ink impregnated body (the upper portion when the stamp unit is placed) are reduced in ink and are flared. , The lower part of the ink impregnated body (the lower part when the stamp unit is placed)
The characters and the like pierced have a problem in that the lines constituting the characters and the like are thickened and the resolution is reduced because the ink is excessively transmitted through the perforated group more than necessary. As a result, a pattern such as a character string to be stamp-printed lacks sharpness as a whole.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems. When a stamp unit is not used, a long stamp unit cannot be stably stood in an upright state along its longitudinal direction. With such a configuration, it is an object of the present invention to provide a stamp unit capable of preventing the ink impregnated in the ink body from being unevenly distributed and constantly and stably printing a character or the like clearly. I do.

[0010]

According to a first aspect of the present invention, there is provided a stamp unit comprising: a longitudinal gripping member; and a stamp surface portion formed by covering an ink body impregnated with ink with a heat-sensitive stencil sheet. In a stamp unit having a stamp member provided on a lower surface and detachably attached to a holding member, and a skirt portion surrounding an outer periphery of the stamp member and having a longitudinal skirt member attached to the holding member. A first arc-shaped portion formed at two longitudinally opposed end surfaces of the gripping member and having a predetermined first radius of curvature, and formed at two longitudinally opposed end surfaces of the skirt portion of the skirt member. And a second arc-shaped portion having a second radius of curvature, the center of gravity of the stamp unit being located on the upper surface of the gripping member. Each of the first arc-shaped portions is disposed in a region defined by two centers of the first radius of curvature and two centers of the second arc-shaped portions present on the upper surface of the skirt portion. .

The stamp unit according to claim 2
Is a stamp unit according to claim 1, wherein
The two centers of the second arc-shaped part of the cart part overlap each other.
Is what it is.

Further, the stamp unit according to claim 3.
Is a stamp unit according to claim 1 or 2.
The stamp unit's center of gravity is
On the dividing plane, and divide the dividing plane in the longitudinal direction of the gripping member.
Are arranged on a line segment that is divided into two in the direction orthogonal to
You.

[0013]

The stamp unit according to claim 1 having the above configuration.
When the stamp unit is not used and the stamp unit is placed on a desk surface or the like in a state where the stamp unit is erected along the longitudinal direction of the grip member and the skirt member when the stamp unit is not used, the stamp unit stands upright with respect to the desk surface or the like. Since the stamp unit is rarely placed in a state, the stamp unit is generally placed with its center of gravity slightly deviated leftward or rightward from an upright surface with respect to a desk surface or the like.

At this time, a first arc-shaped portion having a first radius of curvature is formed on two end surfaces facing each other in the longitudinal direction of the gripping member, and the two arc-shaped portions facing each other in the longitudinal direction of the skirt portion of the skirt member. A second arc-shaped portion having a second radius of curvature is formed on the end face, and the center of gravity of the stamp unit is formed by two centers of the first radius of curvature in each first arc-shaped portion present on the upper surface of the gripping member, and a skirt portion. Since it is located in the area defined by the two centers of the second arc-shaped portion present on the upper surface, the downward force acting on the center of gravity of the stamp unit acts to tilt the stamp unit. Become. Thus, when the stamp unit is placed upright on a desk surface or the like, the stamp unit always tilts in one direction by the cooperation of the first and second arc-shaped portions. As a result, the stamp unit has a surface on which the first arc-shaped portion is not formed on the gripping member and a surface on which the second arc-shaped portion is not formed on the skirt member is placed on the lower side. Placed on

In such a state, the width of the stamp member defined between one surface of the skirt member where the second arc-shaped portion is not formed and the other surface is equal to the width of the two second arc-shaped portions of the skirt member. Is sufficiently smaller than the length of the stamp member defined between the end faces where the ink is impregnated, and the range in which the ink in the ink impregnated body can move due to gravity is narrow. There is almost no risk that the stamp member will be unevenly biased in the width direction of the stamp member due to gravity.

As described above, in the stamp unit according to the present invention, in addition to the cooperation of the first and second arc-shaped portions, the stamp unit is mounted on a desk surface or the like in a state where the stamp unit is normally upright. When the stamp unit is placed, the force acting downward based on the center of gravity of the stamp unit is configured to act in the direction of tilting the stamp unit, so that the stamp unit is stably stood still in an upright state along its longitudinal direction Therefore, the ink impregnated in the ink body of the stamp member is prevented from being unevenly distributed in the longitudinal direction of the stamp member, thereby stably printing characters and the like stably at all times. Is possible.

Further , in the stamp unit according to the second aspect,
In the above, the same operation as the stamp unit according to claim 1 is performed.
A second circle on the upper surface of the skirt.
Since the two centers of the arc overlap each other,
Stamp unit upright along its length
Is no longer stable on the
The ink impregnated in the ink body of the tamping member
To prevent uneven distribution in the longitudinal direction of the
Constantly and stably printing characters etc. more clearly
Becomes possible.

Further, in the stamp unit according to the third aspect,
In the stamp unit according to claim 1 or 2,
In addition to the effect of the stamp unit, the center of gravity of the stamp unit
Is on the dividing surface of the stamp unit and
On the line segment that is divided into two in the direction perpendicular to the longitudinal direction of the holding member
So that the stamp unit moves along its length
It will no longer be stable and standing
Therefore, the ink impregnated in the ink body of the stamp member
Link is unevenly distributed in the longitudinal direction of the stamp member
And stabilize the characters etc. more stably at all times.
This makes it possible to perform print printing.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a stamp unit according to the present invention will be described in detail based on an embodiment embodying the present invention with reference to the drawings. First, the configuration of the stamp unit according to the present embodiment will be described with reference to FIGS.
1 is a perspective view of the stamp unit, FIG. 2 is a plan view of the stamp unit, and FIG. 3 is an exploded perspective view of the stamp unit.

In FIG. 1 and FIG.
Basically, a gripping member 2 to be gripped by hand, a stamp member 3 (see FIG. 3) connected to the gripping member 2, a skirt member 6 covering the outer peripheral side of the stamp member 3, and a stamp member 3 And a protective cap 7 (see FIG. 3) which is detachably attached to the cover.

Next, each component of the stamp unit 1 will be described with reference to FIG. The gripping member 2 is formed of a rectangular parallelepiped hollow body made of a metal or a synthetic resin material and having an open lower end. At the lower end of the gripping member 2, a pair of feet 14 projecting downward is provided on the left and right, and the feet 14 are formed with engagement windows 14a. Inside, a spring support portion 20 is formed at the center of the lower surface of the upper wall.

Longitudinal direction of gripping member 2 (indicated by arrow A)
, The two end faces facing each other have a radius of curvature r
A first arc-shaped portion 50 formed by (described later) is formed. Each of these first arc-shaped portions 50 cooperates with each of the second arc-shaped portions 51 formed on both end surfaces of the skirt member so that the stamp unit 1 allows the first arc-shaped portion 50, When the stamp unit 1 is placed on a desk surface or the like with the two arc-shaped portions 51 downward, the force exerted by the center of gravity G of the stamp unit 1 acts to tilt the stamp unit 1.

The stamp member 3 includes a stamp cartridge 4 and an outer peripheral holding member 5. The stamp cartridge 4 includes a rectangular parallelepiped frame 26 formed of a synthetic resin, an ink impregnated body 27 impregnated with oil-based ink to be mounted in a lower surface side recess of the frame 26, and a lower surface of the ink impregnated body 27. And a heat-sensitive stencil 28 covering the periphery of the frame 26. The ink impregnated body 27 may be bonded to the lower surface side recess of the frame body 26 with an adhesive or the like. Further, the portion of the heat-sensitive stencil sheet 28 that is in close contact with the lower surface of the ink impregnated body 27 constitutes the stamped surface portion 33 (see FIG. 4), and as described above, the heat-sensitive stencil sheet 28 is Is adopted, the stamp face portion 33 can be formed over substantially the entire lower surface of the stamp member 3. As a result, positioning for printing is simplified.

The outer peripheral holding member 5 has a rectangular peripheral wall 34 in a plan view on which the stamp cartridge 4 is mounted in an inner fitting manner.
It is constituted by an upper wall portion 35 provided with locking claws 36 corresponding to the four engagement windows 14 a provided on the foot 14 of the gripping member 2. Each of the locking claws 36 is formed with a triangular projection on the outside, and the lower slope of the projection is inclined upward, and passes through the inside of the skirt member 6 to pass through the 4 of the gripping member 2.
It is fixed by engaging the two engagement windows 14a. Further, protrusions 52 are formed on two end surfaces of the peripheral wall portion 34 of the outer peripheral holding member 5 that face each other in the longitudinal direction (the direction indicated by the arrow A) (see FIG. 4). Each protrusion 5
Reference numeral 2 is used to fit the slit 53 formed in the protective cap 7 when the protective cap 7 covers and protects the lower surface of the stamp cartridge 4 as described later. FIG. 4 is a side view of the stamp member 3.

The skirt member 6 includes an outer peripheral wall portion 40 having a rectangular shape in plan view in which the outer peripheral wall portion 34 of the outer peripheral holding member 5 is slidably fitted in a vertical direction, and an upper end of the outer peripheral wall portion 40 of the outer peripheral holding member 5. An upper wall portion 41 located above the upper wall portion 35,
A gate-shaped portion 43 projecting upward from the center of the upper wall portion 41 by a predetermined height and inserted into the gripping member 2;
And a spring support 45 protruding from the center of the upper end of the spring. The upper wall portion 41 of the skirt member 6 has a gate-shaped portion 4
A pair of left and right rectangular holes 42 sandwiching 3 are formed. The rectangular hole 42 has a triangular protrusion 46
The foot 14 of the gripping member 2 is slidably inserted vertically from above, and the projection 46 is fitted into the engagement window 14 a of the foot 14. A compression spring 21 that urges the holding member 2 upward between the spring support portion 45 of the holding member 2 and the spring support portion 45 of the skirt member 6 is mounted.

Further, in the longitudinal direction of the skirt member 6 (in the direction indicated by the arrow A), two end faces facing each other have a second radius of curvature R (described later).
An arc-shaped portion 51 is formed. As described above, each of the second arc-shaped portions 51 cooperates with the first arc-shaped portion 50 so that the stamp unit 1 can lower the desk with the first arc-shaped portion 50 and the second arc-shaped portion 51 downward. When the stamp unit 1 is placed on an upper surface or the like, the force exerted by the center of gravity G of the stamp unit 1 works to tilt the stamp unit 1. The lower end of the central part of the four surfaces of the outer peripheral wall 40 of the skirt member 6 is partially notched for the attachment / detachment of the protective cap 7 and the positioning of printing.

The protective cap 7 is for detachably covering and protecting the lower surface side (the seal surface 33 side) of the stamp cartridge 4, and its outer peripheral wall portion 48 is formed on the outer peripheral wall portion 34 of the outer peripheral holding member 5. And are formed in the same shape in plan view,
The protective cap 7 is provided on the outer peripheral wall 40 of the skirt member 6.
It is supported by being fitted inside. When the protective cap 7 is mounted, its upper end abuts on the lower end of the outer peripheral wall portion 34, and a small gap is left between the protective cap 7 and the stamp surface portion 33. The protective cap 7 is in contact with the outer peripheral surface of the outer peripheral wall portion 48. The skirt member 6 is supported by frictional force between the skirt member 6 and the inner peripheral surface of the outer peripheral wall portion 40. Therefore, even if the gripping member 2 is pushed downward while the protective cap 7 is mounted, the gap is maintained by the contact between the upper end of the protective cap 7 and the lower end of the outer peripheral wall 34. Ink does not adhere to 7.

The longitudinal direction of the protective cap 7 (arrow A)
(In the direction indicated by), slits 53 are formed in the two end faces facing each other to fit the projections 52 formed on the outer peripheral holding member 5.

In order to print desired characters and the like on paper by the stamp unit 1 described above, a desired stencil sheet 28 forming the stamped surface portion 33 is previously formed on a heat-sensitive stencil sheet 28 by a thermal head of a thermal printer (not shown). Characters and the like are formed by many perforations. Next, at the time of printing, the protective cap 7 is removed, and the skirt member 6 is set at a position on the surface of the paper to be printed. At this time, the stamp unit 1 is moved while looking at the printing position and the end of the stamp surface portion 33 through the notch at the lower end of the skirt member 6, and the stamp surface portion 33 is accurately positioned at a desired printing position. When the gripping member 2 is pressed from above after the stamp surface portion 33 to be printed is positioned as described above, the foot 1
4 presses the upper wall portion 35 of the outer peripheral holding member 5 downward. As a result, the stamp member 3 lowers its position, and conversely, the spring 21 contracts and the skirt member 6 rises to the desired position set. Printed. That is, after the stamp surface portion 33 is positioned at a desired position on the surface of the paper via the skirt member 6, the grip member 2 is grasped and the grip member 2 is pushed downward, so that the stamp surface portion 33 is placed on the surface of the paper. When pressed, the ink impregnated body 27 is crushed between the frame 26 and the sheet, and the ink in the ink impregnated body 27 exudes from the large number of perforations, so that the perforated pattern is printed on the surface of the sheet. . Then, when the pressing force on the gripping member 2 is reduced after printing, the stamp member 3 is raised and returned as the gripping member 2 is urged upward by the compression spring 21.
By such a returning operation, the peeling of the sheet from the stamp face portion 33 is promoted, and the thin sheet is printed finely.

By the way, when the stamp unit 1 is not used, the stamp unit 1 is generally placed on a desk surface or the like in a state of being laid horizontally or vertically. Here, the state in which the stamp unit 1 is laid down means that the surface on the long side where the first arc-shaped portions 50 are not formed in the gripping member 2 and the second arc-shaped portions 51 in the skirt member 6. Is a state in which the stamp unit 1 is placed on a desk surface or the like with the surface of the outer peripheral wall portion 40 on the long side where the stamp unit 1 is not formed facing down, and the stamp unit 1 is in a vertical state.
First arc-shaped portion 50 of gripping member 2 and skirt member 6
Is placed on a desk surface or the like with the second arc-shaped portion 51 facing downward.

Here, when the stamp unit 1 is placed on a desk surface or the like with the stamp unit 1 lying on its side, the width of the stamp cartridge 4 of the stamp member 3 (in the direction orthogonal to the direction of arrow A indicating the longitudinal direction). Is sufficiently smaller than its length (the length in the direction parallel to the direction of arrow A), and the range in which the ink in the ink impregnated body 27 can be moved by its gravity is narrow. Is hardly unevenly biased in the width direction of the ink impregnated body 27 due to the gravity. On the other hand, when the stamp unit 1 is placed on a desk surface or the like in a vertical state, the length of the stamp cartridge 4 is much larger than its width, so that the ink in the ink impregnated body 27 Since the movable range is widened by gravity, the ink in the ink impregnated body 27 is moved in the direction (downward) such as the surface of the desk by the gravity. Accordingly, when the stamp unit 1 is placed on a desk surface or the like in a state where the stamp unit 1 is vertically set for a long time,
The ink in the ink impregnated body 27 moves downward and is biased, and as a result, the stamp unit 1
, A pattern such as a character string to be stamp-printed cannot be printed with good overall sharpness.

Therefore, in the stamp unit 1 according to the present embodiment, the first arc portion 50 of the gripping member 2 and the second arc portion 51 of the skirt member 6 cooperate, and the stamp unit 1 By arranging the position of the center of gravity G in a specific area, even when the stamp unit 1 is placed on a desk surface or the like in a vertical state, the stamp unit 1 is easily tilted to a horizontal state. It is composed.

FIG. 5 shows how the stamp unit 1 is tilted to a horizontal state when the stamp unit 1 is placed on a desk surface or the like in a vertical state.
And FIG. Here, FIG.
Is divided into two in the direction of the arrow A (longitudinal direction), and schematically illustrates the relationship between the area defined by the center of the radius of curvature of each of the first arc-shaped member 50 and the second arc-shaped member 51 and the center of gravity G of the stamp unit 1. FIG. 6 is a diagram schematically showing a stamp unit 1.
It is explanatory drawing which shows the state which tilts typically.

First, the position where the center of gravity G of the stamp unit 1 is arranged in the stamp unit 1 will be described with reference to FIG. In FIG. 5, each of the first arc-shaped portions 50 on both end faces in the direction of arrow A (longitudinal direction) of the gripping member 2
Each of the circles is formed with a radius of curvature r, and the center C1 of each circle drawn by the radius of curvature r exists on the upper surface of the gripping member 2 and on the division plane P when the gripping member 2 is divided into two in the longitudinal direction. I do. The second arc-shaped portions 51 on both end surfaces of the skirt member 6 in the direction of arrow A (longitudinal direction)
Both are formed with a radius of curvature R, and the radius of curvature R
(In this case, the centers C2 of the two circles drawn with the radius of curvature R in each second arc-shaped portion 51 overlap each other) on the upper wall portion 41 of the skirt member 6. And exists on the division plane P.

The center of gravity G of the stamp unit 1 is
It is arranged in an area Q (shown by oblique lines in FIG. 5) defined by the centers C1 and C2. In FIG. 5, the center of gravity G is disposed on the division plane P and on a line segment L that divides the division plane P into two in a direction orthogonal to the direction of the arrow A. May be arranged at any position as long as the position is. Further, in the example shown in FIG. 5, the centers C2 of the two circles drawn with the radius of curvature R specifying each of the second arc-shaped portions 51 are arranged so as to overlap each other. The center C2 may be arranged at a position separated from each other as shown in FIG.
In this case, the center of gravity G is located in the inverted trapezoidal region Q defined by the centers C1 and C2.

Next, when the stamp unit 1 is placed on a desk surface or the like with the stamp unit 1 in the vertical position, the stamp unit 1
Will be described with reference to FIG. When the stamp unit 1 is placed on a desk surface or the like in a vertical state, it is usually in an upright state (vertical state).
In FIG. 6, the stamp unit 1 is placed slightly inclined with respect to the placing surface, because the stamp unit 1 is rarely placed on the placing surface. It is shown assuming the case of being placed in the. FIG.
In the figure, D indicates a mounting surface on which the stamp unit 1 is mounted, and E indicates a surface passing through two points where the stamp unit 1 contacts on the mounting surface D and perpendicular to the mounting surface D.

In FIG. 6, the stamp unit 1 is mounted on the mounting surface D in a slightly inclined state. At this time, the stamp unit 1 is positioned at a point on the first arc-shaped portion 50 of the gripping member 2. J and the point K on the second arc-shaped portion 51 of the skirt member 6 are in contact with the mounting surface D. Where the vertical plane E
Is a plane passing through the points J and K and perpendicular to the mounting surface D.

In this state, the center of gravity G of the stamp unit 1 existing in the area Q is at a distance m with respect to the vertical plane E.
It is located one space to the right. In such a case, the downward force acting on the center of gravity G acts to tilt the stamp unit 1 further rightward. Thus, the stamp unit 1 is tilted rightward in FIG. 6 and placed on the placement surface D in a horizontal state.

On the other hand, when the center of gravity G of the stamp unit 1 is located at a position outside the region Q (in FIG. 6, below the holding member 2 and within the skirt member 6) (shown by the center of gravity g), the center of gravity g Exists at a position leftward from the vertical plane E by a distance m2. In such a case, the downward force acting on the center of gravity g acts to return the stamp unit 1 to the left. As a result, the stamp unit 1 is less likely to be tilted, and in some cases, the stamp unit 1 may be held upright.

As described above, when the center of gravity of the stamp unit 1 exists at a position deviated from the area Q (the center of gravity g),
Since the downward force acting on the center of gravity g acts in a direction to prevent the tilting of the stamp unit 1, the stamp unit 1
It can be understood that the center of gravity must be present in the region Q (center of gravity G) in order to automatically incline when is placed in the normal vertical state.

As described in detail above, in the stamp unit 1 according to the present embodiment, the center C1, C1 of the circle drawn by the radius of curvature r of each first arc-shaped portion 50 on the division plane P of the gripping member 2 Since the center of gravity G of the stamp unit 1 is configured to be present in an area Q defined by the center C2 of the circle drawn by the radius of curvature R of the second arc-shaped portion 51, the stamp unit 1 is placed in a normal vertical state. When placed on the desk top, etc., the force acting downward by the center of gravity G is
It will work in the direction to tilt the stamp unit 1,
This prevents the stamp unit 1 from standing still in an upright state along the longitudinal direction.

Accordingly, the ink impregnated body 2 of the stamp member 3
It is possible to reliably prevent the ink from being unevenly distributed in the length direction of the impregnating body 27 in the inside 7, and to stably print a character string or the like stably through the stamp unit 1 at all times. Things.

It should be noted that the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the spirit of the present invention.

[0044]

As described above, the star according to claim 1 is provided.
According to the pump unit, when the stamp unit is not used, the ink impregnated in the ink body is prevented from being stably stood still in an upright state along the longitudinal direction when the stamp unit is not used. It is possible to provide a stamp unit which can prevent characters from being evenly distributed and constantly and stably print characters and the like clearly.

The star according to claim 2 or 3 is provided.
According to the stamp unit, the stamp unit according to claim 1 is provided.
In addition to the effects that the stamp unit has, the stamp unit
It can be stably stood still upright along the
Since it disappeared, it was impregnated in the ink body of the stamp member
Ink is unevenly distributed in the longitudinal direction of the stamp member
Can be prevented, and characters etc. can be more clearly
Can be tamped.

[Brief description of the drawings]

FIG. 1 is a perspective view of a stamp unit.

FIG. 2 is a plan view of a stamp unit.

FIG. 3 is an exploded perspective view of the stamp unit.

FIG. 4 is a side view of the stamp member.

FIG. 5 schematically shows the relationship between the area defined by the center of the radius of curvature of each of the first arc-shaped member and the second arc-shaped member and the center of gravity of the stamp unit in a state where the gripping member is divided into two in the direction of arrow A. FIG.

FIG. 6 is an explanatory diagram schematically showing a state in which the stamp unit is tilted.

FIG. 7 schematically illustrates another relationship between the area defined by the center of the radius of curvature of each of the first and second arc-shaped members and the center of gravity of the stamp unit in a state where the gripping member is divided into two in the direction of arrow A. FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 stamp unit 2 gripping member 3 stamp member 4 stamp cartridge 5 outer peripheral holding member 6 skirt member 27 ink impregnated body 28 heat-sensitive stencil sheet 50 first circular arc portion 51 second circular arc portion C1, C2 center G, g center of gravity P division Surface Q area r, R Curvature radius

Claims (3)

(57) [Claims] 1. A stamp member having a longitudinal gripping member, a stamped surface portion on which an ink body impregnated with ink covered with a heat-sensitive stencil sheet is provided on a lower surface, and which is detachably attached to the gripping member. A stamp unit having a skirt portion surrounding the outer periphery of the member and having a longitudinal skirt member attached to the gripping member, wherein the stamp unit is formed on two end faces of the gripping member that face each other in the longitudinal direction and has a predetermined shape. A stamp unit, comprising: a first arc-shaped portion having one radius of curvature; and a second arc-shaped portion formed on two end faces of the skirt member in the longitudinal direction of the skirt portion and having a second radius of curvature. The center of gravity is located between the two centers of the first radius of curvature in each of the first arc-shaped portions present on the upper surface of the gripping member and the upper surface of the skirt portion. The stamp unit, wherein the stamp unit is arranged in an area defined by two centers of the existing second arc-shaped portions. 2. In the second arc-shaped portion of the skirt portion
Claims characterized in that the two centers overlap each other
Item 2. The stamp unit according to Item 1. 3. The stamp unit according to claim 1, wherein
On the dividing surface of the tamping unit and gripping the dividing surface
Arrange on a line segment that divides into two in the direction perpendicular to the longitudinal direction of the member.
3. The device according to claim 1, wherein
Stamp unit.