JP2637963B2 - Print sheet - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a printing sheet.

[Conventional technology and problems]

Conventionally, various copying methods for copying an original using heat have been developed.

 As this type of method, for example, there is the following method.

(A) Printing method using heat-sensitive stencil sheet The printing method relating to (a) is described in, for example,
The original and the heat-sensitive stencil sheet are closely overlapped and superimposed, and the light source is irradiated to generate heat in the image portion drawn on the original, and the heat punches a hole in the heat-sensitive stencil sheet. To manufacture.

Thereafter, ink is applied to the heat-sensitive stencil sheet, and stencil printing is performed on a recording paper placed on a base.

In other words, according to the printing method (a), two steps, a plate making step and a printing step, are required to copy a document, and the workability is poor. In the printing step, wet ink is used. Therefore, there was a problem that it was difficult to handle.

(B) A thermal copying method using a thermal recording paper in which a coloring layer is provided on a base layer made of a transparent or translucent synthetic resin sheet.

This (b) was made in order to improve the printing method of the above (a) and was previously proposed by the applicant of the present invention (for example, Japanese Patent Application No. Copying method and apparatus ").

That is, in the method (b), the original set on the base and the thermal recording paper are irradiated with light in a compressed state to perform thermal copying. The original is mirror-imaged and copied on the thermal recording paper. Therefore, when this image is viewed through a synthetic resin sheet that is a transparent or translucent base layer, the image can be visually recognized as a normal image.

According to the thermal copying method of (b), all the problems of the printing method of (a) are alleviated.

However, the printed sheet is a special sheet in which a light emitting layer is provided on a base layer of a synthetic resin sheet, and there is a problem that it cannot be recorded on so-called plain paper.

Again, there is a strong demand to copy or transfer an original to a sheet of paper or notebook paper of any material, and moreover, a PPC type (cursor type) copying machine (copy machine) that has been used in offices and the like before. It is expected that a copying apparatus which is small in size, has good operability, and does not require maintenance will be developed.

The present inventors have studied various methods for easily copying an original on plain paper in order to respond to this kind of demand.

By the way, the spread of word processors and other devices has made it easy for anyone to create typescripts. In addition, using an image reader or other means, such as a CCD (Charge Coupled Device), to convert figures and tables into digital signals It can be converted and recorded in memory. Accordingly, such charts and pictures can be printed out as originals together with characters.

It takes time to print out such characters and figures with a word processor or the like, and it is easy to make a plurality of copies as a single document and then copy it by some method.

As described above, it is desired to easily and speedily copy an original including characters and figures onto plain paper after preparing the original. However, as a result of various experiments, it has been desired to copy the original onto a metal sheet (for example, aluminum foil). The present inventor has found that a manuscript can be prepared and thermally transferred using a thermal transfer ink sheet.

When plain paper is placed on the thermal transfer ink sheet as an original and infrared rays are given as flash, heat is applied to the bottom of all parts of the original, that is, the places where characters and figures are drawn and the places of blank white paper. It has also been found that the thermal transfer ink sheet has passed through, and the thermal transfer ink sheet is being deteriorated to the original paper and the recording paper under the thermal transfer ink sheet, so that printing is impossible.

[Object of the invention]

The present invention has been made based on the above circumstances and research results, and when performing printing by light irradiation using a printing original plate, the manuscript portion is carelessly transferred to the light emitting side and the side emitting the light beam is inadvertently transferred. It is an object of the present invention to provide a printing sheet that can prevent soiling.

[Gist of the invention]

That is, in order to achieve the above object, the present invention provides a printing original plate that does not transmit light and only the original portion formed on the front surface is heated by the irradiation of the light beam so that the heat is transmitted to the back surface. And a transparent sheet for covering the surface of the printing plate precursor. The gist is that the transparent sheet is releasably adhered to one edge of the printing plate precursor.

[Basic principle of the invention]

As described above, the present invention is characterized in that a metal sheet (made of aluminum foil or the like) is preferably used as a printing original plate.

That is, when a metal sheet of this kind is irradiated with a light beam, for example, an infrared ray as a flash, it does not transmit heat to its rear surface, and does not undergo any deterioration even if the thermal transfer ink sheet is disposed on its lower surface.

However, manuscript parts such as letters and pictures written with a pen such as black on the surface of this metal sheet, type letters and figures written with a word processor etc., and pictures read with an image reader etc. When the thermal transfer ink sheet is placed on the lower surface, only the portion corresponding to the document portion is further disposed on the lower surface of the recording paper. Will be transcribed.

In other words, the printing original plate and the thermal transfer ink sheet exhibit different physical (or chemical) changes due to the irradiation of infrared rays when the original is drawn and when the plain printing is performed. Printing is easy and speedy.

Further, the principle of the present invention will be described in detail with reference to FIG.

In FIG. 1 (A), reference symbol A is a printing original plate made of metal foil such as aluminum, and reference symbol a indicates a document portion. Then, the thermal transfer ink sheet B is placed on the lower surface of the printing original plate A. The upper portion of the thermal transfer ink sheet B is the support B-1 and the lower portion is the ink layer B-2. Then, an appropriate recording paper C is placed on the lower surface of the thermal transfer ink sheet B.

The above is the first step of the present thermal transfer printing method. Then, under the condition that the printing original plate A, the thermal transfer ink sheet B, and the recording paper C are at least pressed against each other, the light source, preferably the infrared light source is irradiated as a flash (first light).
The arrow in the figure (A) indicates infrared light. ).

As a result, as shown in FIG. 1 (B), the heat is transmitted to the back side at the document portion a, and the heat-sensitive transfer ink sheet B
Is heated to transfer the ink layer B-2 to the recording paper C.

This heat flow is indicated by the dashed arrow in FIG. 1 (B). The heat applied to the plain area other than the original section a is partially absorbed by the printing original plate A, but is dissipated, and most of the other heat is applied to the printing original plate A in FIG. ) Will be reflected as indicated by the solid arrow. Thus, the second step of the present thermal transfer printing method is completed.

As a result, printing is completed as shown in FIG. That is, FIG. 1 (C) shows that the printing original plate A, the thermal transfer ink sheet B, the recording paper C
Are separated from each other, and the original portion a of the recording paper C is
Is formed in a portion corresponding to. That is, the recording portion c is formed by transferring the ink from the ink layer B-2 of the thermal transfer ink sheet B. In the figure, “b” is a defective portion formed by running out of ink.

In this manner, if at least the printing original plate A, the thermal transfer ink sheet B, and the recording paper C are superimposed and irradiated with light rays such as infrared rays as flash light, printing can be completed in an instant, which is extremely simple. It is preferable because it can be performed speedily and does not smear hands or clothing.

Further, as the heat-sensitive transfer ink sheet B, those having various ink layers such as red and blue in addition to those having a black ink layer have been put into practical use. When used in combination, multicolor printing can be performed very easily, and printing can be performed clearly, and a good printed matter can be obtained.

〔Example〕

Next, an embodiment of the present invention for actually performing printing using the above-described basic principle of the present invention will be specifically described.

FIG. 2 shows a state where address printing is performed using a postcard as recording paper C, and a light source device 1 for irradiating a light beam such as an infrared ray has a transparent sheet D and an address recorded in advance. The printing plate A, the thermal transfer ink sheet B, and the recording paper C are set on the recording paper C. When the apparatus main body 5 is pressed from above, a flash is applied to the printing plate A and the thermal transfer ink sheet B to perform thermal transfer printing. Do.

On the other hand, the transparent sheet D is to cover the surface of the printing original plate in order to prevent the glass plate 12 described below from being stained and to protect the printing original plate A. That is, FIG. 3 shows that the transparent sheet D and the printing original plate A are detachably adhered at one end edges thereof at the adhesive portions d so that they can be handled integrally.

That is, when a predetermined character or the like is written on the printing original plate A by a word processor or handwriting, it is used in a state where the transparent sheet D is turned up as shown by a dashed line in FIG.

Thereafter, when the original portion a is formed and the actual printing process is started, the transparent sheet D is disposed so as to cover the printing original plate A, and the original portion a is placed in a normal image as shown in FIG. It is placed so that it can be seen.

Next, the internal structure of the light source device 1 will be described with reference to FIG.

That is, as shown in FIG. 4, a portable device main body 5 of the light source device 1 includes a housing-shaped outer housing 6 having an opening at one end, and a vertically movable housing housed and arranged inside the outer housing 6. The light source accommodating case 8 is integrally attached to the opening of the inner case 7. In this light source housing case 8, a lamp 9 (for example, a xenon lamp) that emits a flash for a predetermined time is disposed via a lamp mounting plate 8a. Protrusions 10 are formed on both sides of the light source housing case 8 to facilitate gripping.
On the inner wall, a reflecting plate 11 made of aluminum foil or the like is provided to increase the efficiency of light irradiation from the lamp 9 to the printing original plate A. On the lower surface of the light source housing case 8, a transparent glass plate 12 forming a light transmitting portion is stretched. This glass plate 12
Transmits the light from the lamp 9, and transmits the transparent sheet D, the printing plate A, and the thermal transfer ink sheet B to the recording paper C.
Acts as a holding plate for close contact.

On the other hand, a power supply unit 14 used for driving the lamp 9 to be turned on is accommodated in the apparatus main body 5.
The power supply unit 14 is configured by a charger or the like that can be charged by a dry battery or a commercial power supply. Also, the device body 5
At a predetermined position, specifically, at an upper position of the inner casing 7,
When the device main body 5 is gripped and the device main body 5 is pressed with a pressing force of a predetermined value or more, a pressure-sensitive switch mechanism 15 is provided which is turned on to drive the lamp 9 to be turned on by the power supply current from the power supply unit 14. ing. The pressure-sensitive switch mechanism 15 includes one spring piece 15a of a pair of spring pieces 15a and 15b formed by forming a substantially U-shaped cut portion 7a in the upper wall portion of the inner casing 7, and A pressure-sensitive switch 15c attached to the inner wall of the inner casing 7 and a pair of contact springs 15d and 15e constituting the pressure-sensitive switch 15c are provided on the inner wall of the outer casing 6 for on / off operation. And a pressing portion 15f.
The pressing portion 15f is vertically movably inserted into a guide hole 7b formed in the center of the upper wall of the inner wall 7, and the distal end of the pressing portion 15f prevents the outer housing 6 from being detached from the inner housing 7. 7c is fitted.

Next, using the light source device 1 having the above configuration, the printing original plate A
The copying process when the characters etc. are taken on the recording paper C
This will be described with reference to the drawings.

First, the recording paper C and the thermal transfer ink sheet B are placed on a base, and the printing original plate A is set thereon so that the original section a faces up, and the transparent sheet D is overlaid thereon. In addition, as shown in the figure, the ink layer B-2 of the thermal transfer ink sheet B is made to contact the surface of the recording paper C.

Thereafter, the apparatus main body 5 is gripped, and the transparent sheet D, the printing original plate A, the thermal transfer ink sheet B, and the recording paper C on the base are pressed against each other by pressing the glass plate 12. More than a predetermined force,
When the apparatus main body 5 is pressed, the outer casing 6 moves downward while being guided by the side wall surface of the inner casing 7 against the elastic force of the pair of spring pieces 15a and 15b formed on the upper wall of the inner casing 7. Then, as the outer casing 6 moves downward, as shown in FIG. 5, a pair of contact springs 15 is formed on a pressing portion 15f formed on the upper wall of the outer casing 6.
Of the d and 15e, since the tip of the contact spring 15e in the upper position is moved downward, the contact spring 15e and the contact 1 in the lower position are moved.
5d will make electrical contact. As a result, the pressure-sensitive switch mechanism 15 is turned on, and a trigger signal is applied to the lighting circuit, whereby a driving voltage suitable for flash lighting is applied to the lamp 9. As a result, the lamp 9 automatically flashes, passes through the light glass plate 12 and the transparent sheet D, and irradiates the printing original plate A. Due to this irradiation, only the original portion a generates heat to a temperature sufficiently higher than the other portions, and the thermal energy causes the original portion a of the printing original plate A to follow the above-described operation principle.
Is copied onto the recording paper C by thermal transfer of the thermal transfer ink sheet B.

As described above, according to the present embodiment, since the light source, the power supply unit, and the pressure-sensitive switch mechanism are provided in the portable light source device 1,
With a simple operation of pressing the apparatus main body, the pressure-sensitive switch mechanism is turned on, and based on this on-operation, a power supply current can be supplied from the power supply unit to the light source, so that thermal transfer printing can be performed easily and quickly. become.

Further, according to the present embodiment, the transparent sheet D is releasably bonded to one end edge of the printing original plate A having the document portion a formed on the surface via the bonding portion d to form a printing sheet. ing. Accordingly, when a predetermined character or the like is written on the surface of the printing original A by a word processor or handwriting, the printing original A
The transparent sheet D is bent from the adhesive portion d formed on one edge of the printing plate A, and the transparent sheet D is positioned on the back side of the printing original plate A. On the other hand, characters formed on the surface of the printing original plate A When the original portion a is transferred to the recording paper C via the thermal transfer ink sheet B, the transparent sheet a is turned up, and the entire surface of the printing original plate A is immediately covered with the transparent sheet a. At the time of transfer, it is possible to prevent the original portion a from being transferred to the glass plate 12 and soiling the glass surface. Therefore, the manuscript section a is quickly and reliably
Not only can the image be transferred onto the recording paper C via the thermal transfer ink sheet B, but also the printing original A and the transparent sheet D are integrally bonded via the bonding portion d.
Very convenient for handling and storage management.

The thermal transfer sheet B may be formed into a roll, and a new sheet surface may be taken out automatically or in a manual pull-out operation when printing is performed one after another. By doing so, it becomes suitable for continuous printing.

[Modification of printing original plate]

Next, modified examples of the printing original plate that can be used in the present thermal transfer printing method will be described.

That is, in the example described above, the metal foil itself is used as the printing original plate, but various examples shown in FIG. 6 can be realized.

That is, FIG. 6A shows that the printing original plate A is a metal sheet A-
1 and a coating layer A-2 provided thereon. The coating layer A-2 facilitates formation of a document portion a such as a character. This coating layer A-
2 is formed by applying a predetermined coating liquid or the like.

The example shown in FIG. 1B shows a printing original plate A formed by using a film sheet A-3 such as a resin film as a support and attaching or coating a metal foil or the like on the lower surface thereof to provide a metal sheet A-1. It is. The film sheet A-3 in FIG. 6 (B) is preferably a transparent material or a translucent material. Then, an original portion a is formed on the surface of the film sheet A-3.

FIG. 6 (C) is an example of another printing original plate, which has a laminated structure opposite to that of FIG. 6 (B), wherein the film sheet A-3 serves as a support, and a metal sheet is provided on the upper surface thereof. Sheet A-
1 is provided. Then, an original portion a is formed on the surface of the metal sheet A-1. The film sheet A-3 in FIG. 6 (C) may be made of a transparent material or an opaque material.

Further, FIG. 6 (D) shows another example, in which a metal sheet A-1 is sandwiched between a film sheet A-3 and another film sheet A-3 'in a San-Germanic manner to form a printing original plate A. It is formed.

The uppermost film sheet A in FIG. 6 (D).
-3 may be a coating layer. Then, a document portion a is formed at a predetermined position of the uppermost film sheet A-3.

In any of FIGS. 6 (A) to 6 (D),
A light beam is emitted from a light source to heat the original section a, and the heat is transmitted to the lowermost layer via the respective layers. Thereafter, the corresponding portion of the thermal transfer ink sheet disposed on the lower surface is transferred to recording paper. Perform thermal transfer.

As described above, the printing original plate can take various forms. The point is that a metal material or a material similar thereto is provided inside the printing original plate, and the surface is changed depending on the material. It is sufficient that only the formed original portion is heated by the irradiation of the light beam and the heat is transmitted to the back surface.

 In addition, various configurations of the light source device and the printing original plate can be adopted.

〔The invention's effect〕

The present invention, as described in detail above, when performing printing by light irradiation using a printing original plate, beforehand to prevent the original portion from inadvertently transferring to the light emitting side and soiling the light emitting side. Can be prevented. In addition, since the printing plate and the transparent sheet are integrally bonded to each other via one edge of the printing plate, it is extremely convenient in handling and storage management.

[Brief description of the drawings]

The drawings show the present invention. FIG. 1 is a diagram showing the basic principle of the present invention, FIG. 2 is a diagram showing an example in which the present invention is applied to address printing, etc., and FIG. 4 and 5 are views showing a specific example of performing thermal transfer printing using a light source device, and FIG. 6 is a view showing various configurations of a printing original plate. A: printing original plate, A-1: metal sheet, A-2: coating layer, A-3, A-3 ': film sheet,
B: thermal transfer ink sheet, C: recording paper, D: transparent sheet, a: original part, b: defective part, c: recording part, d: adhesive part, 1: light source device, 9 ... lamp, 15
…… Pressure-sensitive switch mechanism.

Claims (2)

(57) [Claims] 1. A printing original plate in which only a document portion formed on the front surface which does not transmit a light beam and is heated by irradiation of the light beam so that the heat is transmitted to a back surface, and a front surface of the printing original plate. A transparent sheet releasably adhered to one edge of the printing original plate for coating. 2. The printing sheet according to claim 1, wherein said printing original plate is made of a metal sheet.