JPH10147051A - Printing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove a medium to be printed facilely and simple at the time of separating a roller after printing is done by roll-moving a roller with a printing sheet wrapped therearound on a medium to be printed mounted on a printing table. SOLUTION: A force raising body 50 is connected to a spring plate 55 joined between projections 53 being movable along a pair of parallel rail grooves made on the upper surface plate 40a of a printing table 40, and while the raising body 50 is permitted to be projected from a guide groove situated on the rear surface of a medium 46 to be printed onto the upper surface plate 40a, a projection body 53 is engaged with stepped parts 56 formed at both left and right side plate parts of a support tool 41 mounted on a roller body 42 with a printing sheet 34 adhered thereto, and during printing, the medium 46 to be printed and raising body 50 are moved while being pressed against the upper surface plate 40a by the roller body 42. After the completion of printing operation, as the roller is released, the rear surface of the medium 46 to be printed is raised by the raising body 50 in virtue of resilient forces of the spring plate 55.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a cell having an open cell,
Stamping a printing medium such as a postcard using a printing plate sheet in which an ink exuding portion for a desired image portion and an ink non-exuding portion for a non-image portion are formed on the surface of a porous sheet that can be impregnated with stamp ink. Regarding a printing device for printing,
More specifically, the present invention relates to a structure of a printing apparatus that makes it easy to remove a printed medium from a printing table.

[0002]

2. Description of the Related Art Conventionally, a picture,
In order to print a desired image portion such as a character, for example, in Japanese Utility Model Publication No. Sho 62-22381, a mirror image of a predetermined image portion is engraved on an endless rubber plate or the like, and a roller image is formed on the peripheral surface of the roller body. Affix, rotatably support this roller body on the handle,
An apparatus that rolls and moves a roller body along a surface of a printing medium placed on a table such as a printing table to perform printing is disclosed.

On the other hand, as disclosed in Japanese Patent Application Laid-Open No. 7-251558, a printing plate sheet made of a porous sheet of a foamed resin having open cells and impregnable with a stamp ink, has a stamp on its surface. Since it is extremely easy to form a mirror image of a predetermined character or picture on the surface, taking advantage of this advantage, the present applicant has previously filed the above-described printing sheet in Japanese Patent Application No. 8-125687. Is detachably mounted on the peripheral surface of a roller body, and is rolled and moved along the surface of a printing medium such as a postcard placed on a printing table in a state where the roller body is mounted on a handle (support). Various printing devices have been proposed.

[0004]

However, as described above, when a printing medium having the same flatness and small thickness is placed on the upper surface of the flat printing table and rolled while pressing the roller body, The print medium and the surface (upper surface) of the printing table are in close contact with each other, and it is difficult to peel off the corners of the printed printing medium from the surface of the printing table with the operator's finger. If the surface of a clean printed portion of the medium that has not been dried is rubbed with a finger, there is a problem that printing is defective.

[0005] Therefore, there is a problem that considerable labor and attention are required to print a large number of print-receiving media neatly, such as for printing a New Year's postcard. The present invention has been made in order to solve this problem, and an object of the present invention is to provide a printing apparatus that makes it easy to remove a printed medium to be printed.

[0006]

According to a first aspect of the present invention, there is provided a printing apparatus in which a printing medium is placed on an upper plate of a printing table and a printing plate is mounted on a peripheral surface. In a printing apparatus that rolls and moves the rolled body to the upper surface of the print-receiving medium via a support and performs printing, the printing table includes a push-up body that can move up and down from the back side of the upper surface plate to a moving urging unit. Guide means for moving the roller body in the direction of movement of the roller body, engaging means for engaging and disengaging the guide means with the support, and the printing medium when the pressing force by the roller body is released. And an upward urging means in which the push-up body facing the rear surface of the upper surface protrudes above the upper surface plate.

According to a second aspect of the present invention, in the printing apparatus according to the first aspect, the guide means is long along the moving direction of the roller body and substantially along the back surface of the print-receiving medium. A guide groove for guiding the push-up body, and a protrusion that is movable outside a side edge of the print-receiving medium along a rail groove formed parallel to the guide groove. The means is configured such that the protruding body is detachable from the support.

[0008] The invention described in claim 3 is the first invention.
3. The printing apparatus according to claim 2, wherein the movement urging unit is configured to return the guide unit and the push-up body to the initial position when the support is disengaged from the engagement unit. Is what is being done. According to a fourth aspect of the present invention, in the printing apparatus according to the second or third aspect, the protrusions are paired with the push-up body interposed therebetween, and the pair of protrusions are formed on the back side of the upper surface plate. The push-up body is urged upward via an elastic body that is urged upward by being connected to the push-up body.

According to a fifth aspect of the present invention, in the printing apparatus according to any one of the second to fourth aspects, the supporter includes a pair of roller members that straddle at least an upper part of a peripheral surface of the roller member. A supporting means for supporting a rotation center portion of
The support is formed with an engagement portion that engages and disengages with the pair of protrusions.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described. 1 is a schematic side sectional view of a stamp unit with a movable lid opened, FIG. 2 is a schematic side sectional view of a stamp unit with a movable lid closed, and FIG. 5 is a schematic perspective view of a printing unit as a printing device. It is.

In FIG. 1 and FIG. 2, the stamp unit basically comprises a plate making section 2 on the upper side of the apparatus main body 1 and a printing section 3 on the lower side of the apparatus main body 1. Are configured to be separable. That is, the upper and lower sides of the bottomed case 7 of the printing unit 3 are engaged with and disengaged from the upper edge of the side of the bottomed case 7 of the printing unit 3 by the lock claws 5 with biasing springs 6 provided on the lower sides of the case 4 of the plate making unit 2. The bottomed case 7 can be separated from the case 4 to take out the articles in the bottomed case 7, and can be printed as described later.

First, the structure of the plate making section 2 will be described. A substantially rectangular recess 13 in plan view is formed in the upper part of the case 4 via a stepped portion 12 having four circumferences in plan view, with four side walls 13b and a bottom wall 13a. The bottom wall 13a is provided with a socket hole 14 to which a flash valve 15 as a light irradiation unit can be detachably attached, and a contact member 16 is arranged on the lower surface side of the socket hole 14. A sheet (not shown) having excellent light reflection characteristics, such as aluminum foil, is adhered to the surface of the recess 13. A transparent plate 17 such as a transparent acrylic plate or the like as a plate making unit support for overlappingly supporting a stamp substrate 25 and a light-transmissive original sheet 26 is detachably mounted on the step portion 12. Have been.

An outer lid 8, an intermediate lid 9, and an inner lid 10, which are movable lids, are provided on the upper left and right sides of the case 4 on pivot pins 18, 1 respectively.
It is pivotally attached to open and close freely via 9, 20 respectively.
On the lower surface of the inner lid 10, a stamp substrate 25 made of a porous sheet having open cells and impregnated with stamp ink is provided.
Further, a flat pressing member 27 such as a sponge or rubber for pressing the transparent sheet 17 with an even pressure on the transparent plate 17 with the light transmissive original sheet 26 overlaid thereon is adhered. On the lower surface side when the intermediate lid 9 is disposed on the upper surface of the inner lid 10, a pressing bulging portion 28 for uniformly pressing the upper surface of the inner lid 10 at a plurality of places.
Are integrally formed.

A handle 29 is provided on the outer surface of the outer cover 8, and a hook portion 31 for engaging and disengaging with a hole-shaped engaging portion 30 of the case 4 is provided on a free end side of the outer surface of the outer cover 8. Are mounted so as to urge in the engagement direction via a torsion spring 32. Further, when the outer lid 8 is overlaid on the upper surface of the intermediate lid 9, at least two pressing bulges 33 are formed for pressing the intermediate lid 9 almost uniformly.

The engaging portion 30 is provided with a switch portion (not shown), a new flash valve 15 is mounted in the socket hole portion 14, the transparent plate 17 is fitted into the step portion 12, and the transparent plate 17 is inserted. Transparent original sheet 26 on top
And a stamping substrate 25 thereon, and then the inner lid 1
0, the intermediate cover 9 and the outer cover 8 are sequentially stacked, and when the worker applies a predetermined pressing force to engage the hook portion 31 with the engaging portion 30, the switch portion is turned on, and an electric circuit (not shown) is turned on. The flash valve 15 can be made to flash through.

The light irradiating section may be configured to emit a flash lamp such as a xenon lamp or a strobe lamp instead of the flash bulb 15.
Further, since the electric circuit is wired on the back surface side of the recess 13, the worker does not receive an electric shock. When using the stamp substrate 25 in which an ink-impermeable coating is formed on the surface of the porous sheet in advance, a light-transmissive original sheet 2 such as PPC paper (tracing original paper) is used.
6, a black image portion is drawn with carbon black, black ink, a water-based marker, etc., and the original sheet 26 is placed on the transparent plate 17 with the image portion facing up. The stamp substrate 25 is stacked and placed with the permeable coating facing downward, and the stamp substrate 25 is placed on the inner lid 1.
The flash valve 15 is flashed by being pressed by the intermediate lid 9 and the outer lid 8, and light including infrared rays is irradiated from the transparent plate 17 side.

In this way, the black image portion is heated (heat storage) by the thermal energy of the irradiated light, and the ink impermeable film in a portion in close contact with the image portion is applied to the black image portion. Welded to the image area. So, manuscript sheet 2
When the stamp 6 and the stamp substrate 25 are peeled off, the ink impermeable coating adheres only to the surface portion of the image portion, and is peeled off from the surface of the stamp substrate 25 to have a shape as in the image portion. The ink impermeable coating is perforated, and the portion becomes an ink exuding portion, and the ink transmitting portion is formed according to the mirror image shape of the image portion, and plate making can be performed.

Accordingly, as shown in FIG. 4, one side of the printing plate 34 made as a plate is provided with the ink bleeding portion 24 corresponding to the mirror image of the image portion and the ink non-leakage portion 23 at a position other than the image portion. Is formed. In addition, the stamp substrate 25 of another embodiment has open cells and has a porous material that can be impregnated with the stamp ink, and contains carbon black or a light energy-absorbing substance dispersed therein. The basic material is a foamed resin material such as a polyolefin resin, a polyvinyl chloride resin, or a polyurethane resin, and preferably has flexibility (softness) when formed into a porous sheet. Therefore, open pores are exposed over the entire surface of at least the wide surface 25a of the stamp substrate 25 before plate making (see FIG. 3A).

It is also possible to use a rubber-based material. The thickness of the stamp substrate 25 is about 1 mm to 5 mm. As described above, by containing carbon black or a light energy-sucking substance, when the surface side of this type of stamp substrate 25 is heated, it is melted and the pores exposed on the surface are closed. . In the examples, the weight ratio of the carbon black or the light energy-absorbing substance contained is 1.0 to 1.5% by weight of the carbon black based on the polyurethane foam resin. The content of carbon black is not limited to this, and may be in the range of 0.1% by weight to 15% by weight. If the content of carbon black is more than 15% by weight, the stamp substrate 25 itself becomes black, and it becomes impossible to know the color of the applied stamp ink, and it is also impossible to know whether or not the stamp ink has been applied. If it is less than 0.1% by weight, sufficient heat cannot be obtained, and the stamp substrate 2
5 cannot be melted.

Further, as the light energy attracting substance,
There are silver chloride and silver bromide. At the time of plate making, PPC paper (manuscript paper for tracing) is used as the manuscript sheet 26 in advance.
Draw a light-impermeable image portion 21 on the surface of a light-transmissive paper such as black, white, gold, silver or the like with light-opaque ink, oily marker, paint, paint, or the like. .

On the other hand, the transparent sheet 22 inserted between the original sheet 26 and the wide lower surface of the stamp substrate 25
Is prepared (see FIG. 3B). This transparent sheet 22
Has the property of melting at a temperature higher than the melting point of the stamp substrate 25 (about 120 ° C. for a soft polyurethane-based resin and about 70 ° C. for a soft polyolefin-based resin). As an example, a transparent PET (polyethylene terephthalate) resin film having a high melting point (about 230 ° C.) is preferable, and the thickness of each sheet is 0.025 mm to
It is about 0.2mm.

Light energy that has passed through portions (non-image portions) other than the image portions of the original sheet 26 is transmitted to the transparent sheet 22.
(See FIG. 3C), and the light energy of the carbon black near the surface (light irradiation side surface) corresponding to a portion (non-image portion) other than the image portion on the stamp substrate 25. Absorbs heat, and the surface portion corresponding to a portion (non-image portion) other than the image portion on the stamp substrate 25 is heated and melted, and then solidified, the pores on the surface are closed, and a predetermined thickness is formed. The ink non-bleeding portion 23 is formed (see FIG. 3D).

On the other hand, when the image area of the original sheet 26 is black including carbon black, the transparent plate 17
The image portion 21 is heated by the light energy irradiated from the direction, and the temperature rises. However, the transparent sheet 22 corresponding to the image portion conducts heat in a horizontal direction or the like within the thickness of the sheet.
In other words, the heat generated on the original sheet 26 side is absorbed and dispersed by the transparent sheet 22, and the surface of the stamp substrate 25 corresponding to the image area is not heated, and the pores conform to the shape of the image area. Becomes the ink exuding portion 24 that is exposed. When the image portion is not black, the light energy is blocked and reflected by the image portion, the surface of the stamp substrate corresponding to the image portion is not heated, and the ink exuding portion 24 where the pores are exposed is not heated. (See FIG. 3D).

Therefore, when the transparent sheet 22 and the original sheet 26 are removed from the wide surface of the stamp substrate 25 after the light irradiation, as shown in FIGS.
The ink bleeding portion 24 remains with the pores in the original sheet 26 in the shape of the mirror image of the image portion being exposed, and the ink non-bleeding portion 23 corresponding to the non-image portion is formed on the wide surface of the stamp substrate 25. Can be made as a printing plate sheet 34 having a printing surface of.

Next, the configuration of the printing unit 3 as a printing apparatus will be described. As shown in FIGS. 5 and 6, the bottomed case 7 of FIG. 1 has a printing table 40 having a rectangular shape in a plan view and a storage unit (not shown) for storing a roller body 42 with a support 41. ) Is provided, and the printing table 40 is detachable or fixed to the bottomed case 7. The printing table 40
When the outer surface of the support 41 is brought into contact with the pair of positioning abutting pieces 44, 44 protruding at positions deviated to one side of the upper surface plate 40 a, the other side of the upper surface plate 40 a of the printing table 40 is provided. A predetermined position on the surface of a printing medium 46 such as a postcard placed with one side edge thereof abutted on a pair of L-shaped restriction pieces 45, 45 in a plan view of the position restricting means 43 which can be moved up and down and arranged at the shift position. The printing start position of the printing plate sheet 34 stuck on the circumferential surface of the roller body 42 is set to be located (see FIGS. 5 and 6). Further, the printing medium 4
The position restricting means 43 connects a lower end of a pair of regulating pieces 45, 45 which can move up and down to a pair of through holes 61, 61 formed in the upper surface plate 40a by a spring plate 62. By fixing an intermediate portion of the spring plate 62 to the lower surface of the upper surface plate 40a with bolts 63 or the like, when an external force acts on each of the restriction pieces 45 from above, the restriction pieces 45 are retracted downward from the upper surface plate 40a. It is configured.

The support member 41 includes a bearing portion as a support means for supporting a support shaft 49 as a pair of rotation centers of the roller member 42 over at least an upper portion of the peripheral surface of the roller member 42. That is, the support member 41 is provided as shown in FIG.
As shown in FIG. 7, an upper plate 47 having a generally semi-cylindrical shape and having a concave curved section in a downwardly curved cross-section, and left and right side plates 48, 48, which substantially cover the upper part of the roller body 42. ,
In the vicinity of the inner surface of the roller 48, a downwardly open (substantially Ω-shaped) bearing portion (not shown) for detachably supporting the support shafts 49, 49 at both ends of the hollow cylindrical roller body 42 is provided. Provided. When the inner peripheral surface of the upper plate portion 47 is formed to have a downwardly arcuate cross section such as a substantially semi-cylindrical shape, the inner peripheral surface is separated from the circumferential surface (outer peripheral surface) of the roller body 42 by an almost equal distance. Preferably, it is formed on the peripheral surface.

The printing table 40 has guide means for moving a push-up body 50 which can be raised and lowered from the back side of the upper surface plate 40a along the rolling movement direction of the roller body 42 against movement urging means; An engaging means for engaging and disengaging the guide means with the support member 41, and when the pressing force by the roller body 42 is released, the push-up body 50 facing the back surface of the printing medium 46 is positioned above the upper surface plate 40a. Upward biasing means protruding from

The guide means is provided so that the push-up body 50 can be slidably moved, is long along the direction of movement of the roller body 42, and extends substantially along the back surface of the print-receiving medium 46. Guide groove 51 formed in the hole
A projecting body 53, which is movable outside a side edge of the printing medium 46 along a pair of longitudinal rail grooves 52, 52 formed in parallel with the guide groove 51.
53.

The pair of protrusions 53, 53
On the lower surface of Oa, connection is made via a rigid strip-shaped connection piece 54 so that the width corresponding to the dimension between the pair of rail grooves 52, 52 does not change (see FIGS. 5 and 10). The pair of protrusions 53, 53 and the push-up body 50 are connected to each other on the lower surface of the upper surface plate 40a by a belt-like spring plate 55 which is an elastic body as an upward urging means (FIGS. 5 to 5). 10). In that case, the spring plate 55
The connecting portion between the two ends of the spring plate 55 and the pair of protrusions 53, 53 is configured to be slightly movable in the longitudinal direction of the spring plate 55.

Therefore, with this configuration, the roller body 4
2 is released, the spring plate 55 is restored to its original position, and the push-up body 50 facing the back surface of the print-receiving medium 46 projects above the upper surface plate 40a to push up the print-receiving medium 46. The back surface of the print-receiving medium 46 is
0a (see FIGS. 8 and 9).

The engaging means includes a pair of the projecting members 53,
Numeral 53 denotes a structure that can be disengaged from the support tool 41. That is, the left and right sides 48, 4 of the support 41
8 has a stepped portion 5 facing downward after the movement as an engagement portion.
6, 56 are formed. When the outer surface of the support 41 on which the roller body 42 to which the printing plate sheet 34 is adhered is brought into contact with the pair of positioning contact pieces 44, 44,
When the protrusions 53, 53 and the stepped portions 56, 56 are engaged with each other (see FIG. 6) and the roller body 42 is rolled and moved in the direction of arrow A in FIG. 6 along the upper surface plate 40a in this state. The push-up body 50 moves forward along the guide groove 51 together with the two projecting bodies 53, 53 moving along the rail grooves 52, 52.

Further, a moving urging means for urging the push-up body 50 in the initial position direction when the supporter 41 with the roller body 42 is moved in the direction of arrow A is disposed on the back side of the upper plate 40a. I have. That is, one end is locked to the connecting portion 57 near the pair of positioning contact pieces 44, 44,
A pair of tension springs 5 whose other ends are locked to the connecting piece 54 or the like.
The movement urging means consisting of the supporting members 41 and 58 is disengaged when the supporting member 41 is disengaged from the engaging member.
The guide means and the push-up body 50 are configured to return to the initial position (the state shown in FIGS. 5 and 6) when the is lifted and separated from the upper surface plate 40a.

The support 41 can be reliably moved to one side of the upper surface plate 40a of the printing table 40 in a state where the axis of the roller body 42 is orthogonal to the longitudinal direction of the guide groove 51. As described above, the long guide piece 60 that slides and guides the outer surface of the one side plate portion 48 of the support member 41 is provided to project upward. Next, the operation of the above configuration will be described. At the start of the printing operation, the printing mediums 46 such as postcards are placed one by one on the upper plate 40a of the printing table 40, and the printing medium 4
6 is positioned by bringing one end edge thereof into contact with the inner surfaces of the pair of regulating pieces 45, 45 (see the two-dot chain line in FIG. 5). Next, as shown in FIG.
When the outer surface of the upper plate portion 47 is brought into contact with and the lower end of the roller body 42 is pressed onto the print medium 46 and set at the printing start position, the stepped portions 56 and the protrusions 53 engage. When the support 41 is moved in the direction of arrow A in FIG. 6 in this state,
The roller body 42 rolls, and the surface of the printing sheet 34 on the peripheral surface of the roller body 42 is pressed against the surface of the print-receiving medium 46, and as described above, the ink oozes from the ink bleeding part 24 and the image area You can print as follows.

As described above, when the lower surface of the roller body 42 presses the printing medium 46, the printing medium 46
The push-up body 50 on the back surface (lower surface) sinks against the elastic force of the spring plate 55, and the upper surface of the head 50a of the push-up body 50 is located on the same plane as the upper surface plate 40a while the guide groove 51 is located.
Go along. Then, as shown in FIG. 7, after the support member 41 and the roller body 42 have moved to the other side of the print medium 46 and the support member 41 is separated from the upper surface plate 40 a, the push-up body 50 is caused by the elastic force of the spring plate 55. Projecting upwards,
Since the upper surface of the head 50a lifts the print medium 46 thereon, the print medium 46 separates from the upper surface plate 40a. In addition, the pair of protrusions 53, 53 and the push-up body 5
The reference numeral 0 denotes the elastic force of the tension spring 58, which returns to the initial position, so that the push-up body 50, which retreats in the protruding state, generates the lifting / pulling-out action over substantially the entire length of the print-receiving medium 46. Therefore, even if the print medium 46 is in close contact with the upper plate 40a, it can be extremely easily separated.

It is to be noted that the head 50a of the push-up body 50 is formed to have a larger diameter than the base, and the upper surface side of the guide groove 51 is connected to the head 5a.
If the head 50a is formed to have a large diameter so that the head 50a does not protrude from the upper surface of the upper plate 40a during the printing operation, the head 50a does not push up the back surface of the printing medium 46, and the printing is performed. The pushing force is not uneven, and the pushing-up body 50 does not come off from the guide groove 51 even if the pushing-up body 50 vibrates up and down due to the elastic force of the spring plate 55 when returning to the initial position.

Further, as shown in FIG.
Sliding pins 65 and 66 made of a material having a small coefficient of friction protruding from the side surfaces of the upper surface plate 40a and smoothly move along the rail grooves 52 without vertically moving the upper and lower surfaces of the upper surface plate 40a. By doing so, when the push-up body 50 sinks down, it is possible to eliminate the adverse effect that the two projecting bodies 53 tilt or sink due to the elastic deformation of the spring plate 55.

[0037]

As described above, the printing apparatus according to the first aspect of the present invention includes a roller body having a printing medium placed on an upper plate of a printing table and a printing plate mounted on a peripheral surface. In a printing apparatus that rolls and moves to the upper surface of the print-receiving medium via a support and prints, the printing table has a push-up body that can be raised and lowered from the back side of the upper surface plate against a moving urging means. Guide means for moving the roller body in the moving direction, engaging means for engaging and disengaging the guide means with the support, and facing the back surface of the printing medium when the pressing force by the roller body is released. Upward pushing means for projecting the push-up body above the upper plate.

According to this structure, when the lower end of the roller body is pressed against the printing medium placed on the upper plate by the support, the push-up body is pressed down against the urging force of the upward urging means. In this state, since the support and the guide unit are engaged with each other, when the support is moved, the guide unit is moved, and the push-up body can also move along the back surface of the printing medium. Therefore, the pushing body does not adversely affect the printing medium during the printing operation. Further, when the printing operation is completed and the support is separated from the upper surface plate, the push-up body returns to the initial position by the elasticity of the moving urging unit while pushing up the printing medium by the elasticity of the upward urging unit. This has a remarkable effect that the print medium that is in close contact with the print medium can be extremely easily separated.

Further, the invention described in claim 2 is the same as that in claim 1
In the printing apparatus described in the above, the guide means is long along the moving direction of the roller body, and a guide groove for guiding a push-up body so as to substantially along the back surface of the print-receiving medium; and a side of the print-receiving medium. A projection that is movable along a rail groove formed in parallel with the guide groove outside the edge, wherein the engagement means is configured such that the projection can be disengaged from the support. Is what is being done.

By configuring the guide means in this manner, the push-up body and the protruding body can move smoothly in parallel along the guide groove and the rail groove. Since the support and the protruding body can be disengaged from each other via the engaging means, there is an effect that the support and the protruding body during the movement are not inadvertently separated from each other. According to a third aspect of the present invention, in the printing apparatus according to the first or second aspect, the movement urging unit is configured to perform the operation when the support is disengaged from the engagement unit. The guide means and the push-up body are configured to return to the initial position.

Accordingly, if the engagement between the holder and the projection is released at the end of the printing operation, the elasticity of the upward urging means causes
Since the push-up body returns to the initial position by the elasticity of the moving urging means while pushing up the printing medium, it is extremely easy to separate the printing medium, and during printing of a New Year's postcard, etc., remove many printing media. This has the effect of eliminating the need for labor and attention required for the work.

According to a fourth aspect of the present invention, in the printing apparatus according to the second or third aspect, the protruding members are formed as a pair with the push-up member interposed therebetween, and are formed on the back side of the upper surface plate. The push-up body is urged upward through an elastic body which is connected to the pair of protrusions and urges upward. With this configuration, when the pair of protrusions are simultaneously moved by the support tool, the push-up body and the protrusion can move smoothly in parallel along the guide groove and the rail groove. And since the elastic body as an upward urging means for pushing up the push-up body is connected to the pair of protrusions, there is no need to support the elastic body with a separate member,
This has the effect of simplifying the structure.

According to a fifth aspect of the present invention, in the printing apparatus according to any one of the second to fourth aspects, the supporter includes a pair of roller members extending over at least an upper part of a peripheral surface of the roller member. A supporting means for supporting a rotation center portion of
The support is formed with an engagement portion that engages and disengages with the pair of protrusions. Since the pair of protrusions are simultaneously moved in parallel via the engaging portions on the left and right sides of the support, the push-up body and the protrusions can move smoothly in parallel along the guide groove and the rail groove. As a result, during the printing operation, since the roller body mounted on the support rolls and moves relative to the printing medium in parallel with the guide groove and the rail groove, the printing position with respect to the printing medium may be inclined or shifted. Not
In particular, for multicolor printing, when a printing plate sheet for ink of a different color is replaced and mounted on the roller body, the printing start position on the printing target medium does not shift, so that the image portion and the position of its color are shifted. There is no print defect such as displacement or excessive overlap, and an effect is obtained that a clear print result can be obtained. Further, the rotation of the roller body becomes lighter, and the effect that the printing work can be made lighter is achieved.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view of a stamp unit with a movable lid opened.

FIG. 2 is a schematic side sectional view showing the stamp unit with a movable lid closed.

3A is a perspective view of a stamp substrate, FIG. 3B is a cross-sectional view of a state in which a document sheet, a transparent sheet, and a stamp substrate are superposed, and FIG. 3C is a cross-sectional view of a light irradiation state;
(D) is a sectional view of a state where the stamp substrate is separated from the transparent sheet.

FIG. 4 is a perspective view of a printing plate sheet.

FIG. 5 is a perspective view of a printing table, a roller body, and a support.

FIG. 6 is a side sectional view at a printing start position.

FIG. 7 is a side sectional view at a printing end position.

FIG. 8 is a side sectional view showing a state in which a printing medium is pushed up.

9 is a cross-sectional view taken along line IX-IX in FIG.

10 is an enlarged sectional view of a main part of FIG. 9;

[Explanation of symbols]

 Reference Signs List 3 printing section 34 printing plate 40 printing table 41 support 42 roller body 44 contact piece 45 regulating piece 46 print medium 47 upper plate section 48 side plate section 49 support shaft 50 push-up body 51 guide groove 52 rail groove 53 protrusion 54 Connecting piece 55 Spring plate 56 Stepped part 58 Tension spring

Claims (5)

[Claims] 1. A printing method in which a medium to be printed is placed on an upper plate of a printing table, and a roller body having a printing plate mounted on its peripheral surface is rolled and moved to the upper surface of the medium to be printed via a support member to perform printing. In the apparatus, the printing table has guide means for moving a push-up body that can be raised and lowered from the back side of the upper surface plate along a moving direction of the roller body against moving urging means; An engaging means for engaging and disengaging the support, and an upward biasing means for projecting the push-up body facing the back surface of the print-receiving medium upward above the top plate when the pressing force by the roller body is released. A printing device, characterized in that: 2. The printing device according to claim 1, wherein the guide means is long in the direction of movement of the roller body and guides the push-up body substantially along the back surface of the print medium, and a side edge of the print medium. A projection that is movable further along a rail groove formed in parallel with the guide groove, the engagement unit is configured to be capable of engaging and disengaging the projection with respect to the support. The printing apparatus according to claim 1, wherein: 3. The moving urging means is configured to return the guide means and the push-up body to an initial position when the support is disengaged from the engaging means. The printing apparatus according to claim 1 or 2, wherein 4. A pair of said protruding bodies sandwiching said push-up body, and said push-up body is directed upward through an elastic body which is connected to said pair of protruding bodies and urges upward on the back side of said top plate. The printing device according to claim 2, wherein the printing device is energized. 5. The support device includes support means for supporting a pair of rotation center portions of the roller body over at least an upper portion of a peripheral surface of the roller body. 3. A detachable engaging portion is formed.
The printing device according to claim 4.