JP2002283692A - Apparatus for manufacturing stamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form an image having a sufficiently high resolution on a stamp material. SOLUTION: An apparatus for manufacturing a stamp sandwiches the stamp material 2 between a fixed clamp 14 and a movable clamp 18 and elongates the material 2. Printing data for forming the image enlarged in response to an elongating ratio on the material 2 is given to an ink jet head 16 for printing the stamp material 2 from a controller 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stamp manufacturing apparatus used for performing a process of forming an image on a stamp material as one process of manufacturing a stamp unit.

[0002]

2. Description of the Related Art When manufacturing a stamp unit, an image may be formed on a stamp material. For example, to form an image on a stamping material when a porous resin is used as the stamping material,
A method of selectively irradiating light to a stamp material with a mask having a pattern corresponding to a desired image and partially dissolving the light to provide an area where ink does not exude, and a method of applying ink to a stamp material in a pattern corresponding to a desired image. A method of applying the ink on the stamp material.

[0003]

In recent years, there has been a demand for a stamp unit having a higher resolution of an image formed on a stamp material. However, even if an attempt is made to increase the resolution of the image formed on the printing material, it is difficult to melt the printing material in a narrow line width in the former case, and in the latter case, the print head used for ink application is used. Due to their own manufacturing limits, it has become difficult to achieve the desired resolution in any case.

Accordingly, a main object of the present invention is to provide a stamp manufacturing apparatus which can form an image having a sufficiently high resolution on a printing material.

[0005]

According to a first aspect of the present invention, there is provided a stamp manufacturing apparatus, comprising: a stamping material stretching means for stretching an elastic stamping material in one direction; and a stamping material stretched by the stamping material stretching means. An image forming unit for forming an image on the stamp material; and the image forming unit extending by the stamp material stretching unit so that an image formed on the stamp material is stretched in the one direction. A control unit for controlling the image forming unit based on a stretching rate of the stamp material.

According to the first aspect, by forming an image in a state where the printing material is stretched, an image having a high resolution in the stretched direction when the printing material is returned to its original length is formed on the printing material. Becomes possible.

Further, in the stamp manufacturing apparatus of the present invention, the stamp material expanding means is capable of displacing with respect to the first holder for holding one end of the stamp material and the first holder. It has a second holder for holding the other end of the stamp material facing one end, and a displacement control means for controlling the displacement of the second holder. .

According to the second aspect, it is possible to stretch the printing material in one direction to a predetermined magnification by a simple structure.

Further, the stamp manufacturing apparatus according to claim 3 is characterized in that the image forming means performs optical plate making of the stamp material.

According to the third aspect of the present invention, the surface of the printing material is partially deteriorated by optical plate making to form an image, so that it is possible to easily supply ink to the printing material.

Further, the stamp manufacturing apparatus according to a fourth aspect is characterized in that the image forming means applies the ink to the stamp material.

According to the present invention, it is possible to manufacture a color stamp by performing color printing. In addition, by applying ink to the stamp material in a state where the stamp material is stretched, the stretching is released and the stamp material is restored. The density of the ink applied to the printing material when the size is returned to the original size is improved. Therefore, it is possible to increase the number of times that printing is possible and increase the printing density.

[0013]

DETAILED 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 diagram illustrating the structure of a stamp manufacturing apparatus 1 according to a first embodiment of the present invention. The stamp manufacturing apparatus 1 shown in FIG. 1 is used for forming an image on a stamp material by applying ink to the stamp material in a pattern corresponding to a desired image. In the stamp manufacturing apparatus 1, a wound long stamp material 2 made of a porous resin is used.
The winding unit 2 is arranged in order from the upstream side along the conveying path of the stamp material 2.
A pair of transport rollers 11 for pressing and transporting the stamp material 2 unwound from a, a cutter 12 for cutting the stamp material 2 along the width direction, and sandwiching the vicinity of one end of the stamp material 2 from above and below. A fixing clamp 14 for fixing (print material stretching means: first holder), an inkjet head 16 (image forming means) for applying ink to the printing material 2 in a pattern corresponding to a desired image, and conveyance of the printing material 2 Clamp 18 (a stamping material stretching means: second
And a pair of transport rollers 20 for pressing and transporting the stamp material 2 supplied from the movable clamp 18 side.

Fixed clamp 14 and movable clamp 18
Has a length that allows the stamping material 2 to be uniformly sandwiched over its entire width. The movable clamp 18
It is movable from a position near the fixed clamp 14 to a position near the transport roller 20. In the present embodiment, two sensors 22 and 23 (displacement amount control means) are arranged along the movement path to detect the position of the movable clamp 18. The sensor 22 is a fixed clamp 1
The sensor 23 is arranged at a position (origin position) separated by a predetermined distance from the position 4, and the sensor 23 is arranged at a position near the transport roller 20.

The ink jet head 16 is movable from a position near the fixed clamp 14 to a position near the conveying roller 20 along the conveying direction of the printing material 2. Further, the pair of transport rollers 20 can selectively take a pressure contact position where they are pressed against each other so that the stamp material 2 can be sandwiched, and a separation position where the stamp material 2 is separated from the transport path.

The detection signals of the sensors 22 and 23 are supplied to a controller 25 (control means). Controller 25
Controls the operation of each member 11 to 20 included in the stamp manufacturing apparatus 1 based on detection signals of the sensors 22 and 23 and the like.

Next, the stamp manufacturing apparatus 1 of the present embodiment
Will be further described with reference to FIG. FIG.
3 is a schematic diagram for explaining the operation of the movable clamp 18 in the stamp manufacturing device 1 shown in FIG.

When the ink is applied to the printing material 2 in a pattern corresponding to the desired image, first, the movable clamp 18 moves to a position near the fixed clamp 14 to sandwich one end of the printing material 2 from above and below. At this time, the fixed clamp 14 is in an open state and does not sandwich the stamp material 2. Thereafter, the movable clamp 18 starts moving in a direction approaching the transport roller 20, and the stamp material 2 is unwound from the winding portion 2a accordingly. Then, the movable clamp 18 stops after moving a predetermined distance.

By driving the cutter 12 in this state, the printing material 2 is cut along the width direction. Thereafter, the movable clamp 18 starts to move in the direction approaching the transport roller 20 again. When the movable clamp 18 reaches a position facing the sensor 22, the controller 2 receives the detection signal of the movable clamp 18 from the sensor 22.
5 controls the movable clamp 18 to stop and the fixed clamp 14 to sandwich the printing material 2. At this time, as shown in FIG. 2A, it is assumed that the intervals between the members are adjusted so that the fixed clamp 14 can sandwich the other end of the stamp material 2 from above and below. As is clear from the above description, in the state shown in FIG. 2A, the stamp material 2 is not stretched at all in the transport direction.

Next, the movable clamp 18 starts to move again in the direction approaching the transport roller 20 while the both ends of the stamp material 2 cut to a predetermined length by the cutter 12 are sandwiched by the fixed clamp 14 and the movable clamp 18. . Accordingly, the stamp material 2 is elastically deformed so as to be stretched in the transport direction with the movement of the movable clamp 18.

Then, as shown in FIG. 2 (b), when the movable clamp 18 reaches a position facing the sensor 23, the controller 25 which has received a detection signal of the movable clamp 18 from the sensor 23, controls the movable clamp 18 to operate. Stop. Further, the controller 25 controls the inkjet head 16 to move from a position near the fixed clamp 14 to a position near the movable clamp 18 while discharging the ink 17 onto the printing material 2.

At this time, the printing data given from the controller 25 to the ink jet head 16 is the printing material 2 when the movable clamp 18 is at the position facing the sensor 22.
The movable clamp 18 with respect to the length of the
The controller 25 adjusts the length of the printing material 2 in the transporting direction by the same amount as the magnification of the length of the printing material 2 in the transporting direction (that is, the stretching rate of the printing material 2) when the printing material 2 is at a position facing the printing material 2 Done. This is so that when the printing material 2 is returned to the original length, an image that does not expand or contract in the transport direction is printed on the printing material 2.

When the inkjet head 16 moves to a position near the movable clamp 18 and printing is completed, the movable clamp 18 starts to move in a direction approaching the fixed clamp 14. When the movable clamp 18 reaches a position facing the sensor 22, the movable clamp 1
The controller 25 having received the detection signal of No. 8 releases the pinching of the printing material 2 by the fixed clamp 14. Thereby, the printing material 2 returns to the original length.

Thereafter, the movable clamp 18 starts moving in the direction approaching the transport roller 20 again. Then, after moving to a position beyond the conveying roller 20, the sheet is nipped by the conveying roller 20 moving from the separation position to the pressure bonding position. Thereby, the printing material 2 is conveyed to the downstream side by the conveying roller 20 and is discharged from a discharge port (not shown).

As described above, according to the stamp manufacturing apparatus 1 of the present embodiment, an image is formed on the stamp material 2 in a state where the stamp material 2 is stretched in the transport direction. Is formed on the printing material 2. Therefore, it is possible to manufacture a stamp having a desired resolution by adjusting the stretching rate of the stamp material 2. Further, in the present embodiment, the stamp material 2 can be stretched to a predetermined magnification by a simple structure in which the pair of clamps 14 and 18 are used and the movement amount is controlled by the sensors 22 and 23. .

Further, according to the present embodiment, the ink material is applied by using the ink
Since an image is formed on a color stamp, it is possible to manufacture a color stamp by performing color printing. In addition, by applying ink to the printing material 2 in a state where the printing material 2 is stretched, the ink application density to the printing material 2 when the stretching is released and the printing material 2 is returned to the original size is reduced to the stretching rate of the printing material 2. Accordingly, by adjusting the stretching rate of the printing material 2, the printing density can be increased as much as necessary, and the number of times printing can be performed can be increased.

In the present embodiment, the stretching rate of the printing material 2 is determined in advance by the arrangement of the members. However, the stretching rate of the printing material 2 is determined from a desired resolution, and the movable clamp 18 is moved to a position corresponding thereto. You may do so. Also, with the inkjet head 16 fixed,
Printing may be performed while moving the fixed clamp 14 and the movable clamp 18 with respect to the inkjet head 16.

The structure of the stamp manufacturing apparatus 1 according to the present embodiment is such that by replacing the related members of the ink jet head 16 with optical plate-making members, the stamp material made of porous resin is irradiated with light and partially melted. It can also be used to perform optical plate making in which an area where ink does not exude is selectively provided. Therefore, a stamp manufacturing apparatus according to the second embodiment of the present invention configured as described above will now be described with reference to FIG. In FIG. 3,
Members common to those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 3, the stamp manufacturing apparatus 30 according to the present embodiment includes an ink jet head 32 for discharging ink onto a transparent original film 36, and a fixed clamp 14 and a movable clamp 18 And a light source 34 for irradiating the stamping material 2 with light via the document film 36. I have. Note that, in the present embodiment, the ink jet head 32 and the light source 34 constitute an image forming unit.

In the present embodiment, a positive original of an image to be formed on the stamp material 2 is printed on the original film 36 in such a manner as to be stretched in the transport direction of the stamp material 2 by the same rate as the enlargement ratio. Therefore, the controller 25 obtains print data corresponding to the enlargement ratio of the printing material 2 and supplies the print data to the inkjet head 32.

As described above, even in the case where optical plate making is performed as in the present embodiment, a desired resolution can be obtained by adjusting the enlargement rate of the stamp material 2 as in the first embodiment. Stamps can be manufactured.

Further, the stamp manufacturing apparatus 3 of the present embodiment
According to 0, the surface of the printing material 2 is partially deteriorated by optical plate making, and an image is formed on the surface of the printing material 2. In other words, even if the ink runs out, the image formed on the printing material 2 does not run out, so that new printing can be performed only by replenishing the printing material 2 with ink. In addition, there is an advantage that the operation of replenishing the ink only needs to perform an easy operation of adding ink from the back side of the printing material 2.

Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a schematic diagram illustrating a main part of the stamp manufacturing apparatus according to the present embodiment.

As shown in FIG. 4, the stamp manufacturing apparatus according to the present embodiment stretches the stamp material 2 by winding the stamp material 2 around a platen roller 42. As shown in FIG. 4A, the leading end of the printing material 2 cut to a predetermined length is between the pair of transport rollers 44 and below the roller clamp 46 and between the platen roller 42 and the roller clamp 45. And fixed between the two.

Then, the platen roller 42 is moved to the position shown in FIG.
By rotating in the direction indicated by the middle arrow (counterclockwise direction), the printing material 2 is wound around the platen roller 42. At this time, the printing material 2 is wound while the back tension is applied by the transport roller 44 (that is, the outer peripheral speed of the platen roller 42 is set to be higher than that of the transport roller 44), and the magnitude of the back tension is controlled to thereby increase the stretching rate of the printing material 2. Can be controlled.

Thereafter, when the rear end of the printing material 2 is detected by a sensor (not shown), the roller clamp 46 is rotated in a direction approaching the platen roller 42 as shown in FIG. The rear end of the printing material 2 is sandwiched between the platen roller 42.

Then, in a state where the both ends of the printing material 2 are sandwiched, the ink 49 is discharged from the ink jet head 48 onto the printing material 2 while rotating the platen roller 42 to print the printing material 2. At this time, the inkjet head 4
The print data given to 8 is changed by the controller 25 in accordance with the enlargement ratio of the stamp material 2. Conversely, printing may be performed while the platen roller 42 is fixed and the inkjet head 48 is rotated around the platen roller 42.

As described above, according to the stamp manufacturing apparatus of the present embodiment, an image is formed on the stamp material 2 in a state where the stamp material 2 is stretched in the circumferential direction of the platen roller 42.
An image in which the resolution in the circumferential direction of the platen roller 42 is increased in accordance with the stretching rate of the printing material 2 is formed on the printing material 2.
Therefore, it is possible to manufacture a stamp having a desired resolution by adjusting the stretching rate of the stamp material 2.

The preferred embodiment of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and various design changes can be made within the scope of the appended claims. It is. For example, in the above-described embodiment, an image is formed on a stamping material made of a porous resin by optical plate making or ink-jet printing, but the stamping material to which the stamp manufacturing apparatus of the present invention can be applied is a porous resin. However, the present invention is not limited to the above-described one, and any material having elasticity within a predetermined range can be applied. Further, the technique used for image formation is not limited to optical plate making or ink jet printing, and an image may be formed on a printing material using other image forming techniques.

[0041]

As described above, according to the first aspect, by forming an image in a state where the printing material is stretched, the resolution in the stretched direction when the length of the printing material returns to the original is improved. A high image can be formed on the printing material.

According to the second aspect, the stamp material can be stretched in one direction to a predetermined magnification by a simple structure.

According to the third aspect, an image is formed by partially altering the surface of the printing material by optical plate making, so that ink can be easily supplied to the printing material.

According to the fourth aspect, it is possible to manufacture a color stamp by performing color printing. Further, by applying ink to the stamp material in a state where the stamp material is stretched, the stretching is released and the stamp material is restored to its original state. The density of the ink applied to the printing material when the size is returned to the original size is improved. Therefore, it is possible to increase the number of times that printing is possible and increase the printing density.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a structure of a stamp manufacturing apparatus according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram for explaining an operation of a movable clamp in the stamp manufacturing apparatus shown in FIG.

FIG. 3 is a schematic diagram illustrating a structure of a stamp manufacturing apparatus according to a second embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating a main part of a stamp manufacturing apparatus according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stamp manufacturing apparatus 2 Printing material 11 Conveyance roller 12 Cutter 14 Fixed clamp 16 Inkjet head 18 Movable clamp 20 Conveyance roller 22 Sensor 23 Sensor 25 Controller

Claims (4)

[Claims] 1. A printing material stretching means for stretching an elastic printing material in one direction, an image forming device for forming an image on the printing material stretched by the printing material stretching device, and the image forming device comprising: Control means for controlling the image forming means based on a stretch ratio of the printing material by the printing material stretching means, so that an image formed on the printing material stretched by the stretching means is stretched in the one direction. A stamp manufacturing apparatus, comprising: 2. A printing apparatus comprising: a first holding member for holding one end of the stamp material; and a second holding member which is displaceable with respect to the first holding member, and wherein the first and second stamp members face the one end portion. 2. The stamp manufacturing apparatus according to claim 1, further comprising: a second holder that holds an end portion; and a displacement control unit that controls a displacement of the second holder. 3. . 3. The stamp manufacturing apparatus according to claim 1, wherein the image forming unit performs optical plate making of the stamp material. 4. The image forming apparatus according to claim 1, wherein the image forming unit applies ink to the printing material.
3. The stamp manufacturing apparatus according to claim 1.