JP2003154793A - Transfer sheet and method for manufacturing transfer sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer sheet which enables an adhesive layer corresponding to the contour of an image layer to be easily formed on the sheet and permits the significant curtailment of its manufacturing cost, even when a large quantity of transfer sheets for the same image are manufactured or small lots of the transfer sheets of different images are manufactured, and a method for manufacturing the transfer sheet. SOLUTION: When a toner image layer laminated on a release face of a release sheet with the release face by an electronic photocopying machine using a toner, is in a half-molten state, a powdery heat-melting adhesive is spread and fixed on the toner image layer. Next, a powdery heat melting adhesive other than the powdery heat-melting adhesive fixed to the surface of the toner image layer is removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer sheet capable of transferring a toner image such as a design, a pattern, a photograph or a character, which is laminated on a release sheet, to an object to be transferred by using an electrophotographic copying machine which uses toner. The present invention relates to a manufacturing method.

[0002]

2. Description of the Related Art As is well known, when an image layer of a transfer sheet is formed by using an electrophotographic copying machine using toner, a plate-making process is carried out more than when an image layer is formed by screen printing, offset printing or gravure printing. There is an advantage that the manufacturing cost can be reduced because there is no need to perform it, and there is an advantage that a specialized printing technique such as color changing and alignment work is not required at the time of printing.

By the way, it is necessary to form an adhesive layer on the image layer of the transfer sheet for adhering the image layer to an object to be transferred at the time of transfer. Conventionally, an adhesive layer corresponding to the image is adhered on the image layer. Various methods for forming the agent layer have been developed.

For example, in Japanese Laid-Open Patent Publication No. 3-173676, a design character of a document prepared in advance is copied onto a release sheet by a copier for an office machine, and an adhesive is applied to the copy surface with a brush, a spatula, or the like. No. 2000-504377, a transfer marking sheet coated with is applied, and in a transfer body for spreading a pattern of a single color or a plurality of colors on a woven fabric by heating and pressurizing, a non-bonding The transfer body has a base sheet having a flexible surface, the non-bonding surface having (a) a monochromatic or multicolor pattern printed on the base sheet using a digitally controlled color printer; and (b) A transparent or white colored elastomer layer of a polymer having a high plasticizing temperature, which is contoured and silk-screen printed on the monochromatic or polychromatic pattern, (c) A heat-activatable thermoplastic polymer adhesive layer conformally silk screen printed onto a transparent or white colored elastomer layer, or onto said elastomer layer while the elastomer layer is still wet. A transfer body carrying particles of a heat-activatable heat-meltable material dispersed on a substrate is disclosed.

[0005]

However, in the former transfer marking sheet, as a method of forming an adhesive layer corresponding to the contour of the copy surface, the adhesive is manually applied to the copy surface with a brush or a spatula. In this method, it is suitable for manufacturing transfer sheets of different images little by little, but when manufacturing a large number of transfer sheets of the same image, a large number of workers are required. In addition, there is a problem that the work takes time and the manufacturing cost becomes high.

In the latter transfer body, as a method of forming an adhesive layer corresponding to the contour of a monochromatic or multicolor pattern, a method of silk screen printing the adhesive layer according to the contour of the pattern is used. Silk screen printing the elastomer layer to the contours of the pattern and then sprinkling granules of the heat-activatable heat fusible material on the elastomer layer while the elastomer layer is wet. However, in any of the above methods,
Since a silk screen printing process is required at least once in the process of forming an adhesive layer corresponding to the contour of a pattern, and plate making is required for the silk screen printing, a large number of transfer sheets of the same image are manufactured. However, it is necessary to perform plate making for each image when a small number of transfer sheets with different images are to be manufactured, which increases the manufacturing cost and is specialized for alignment work during printing. There is a problem that printing technology is required.

Therefore, the present inventor can easily form the adhesive layer corresponding to the contour of the image layer, and when the transfer sheet of the same image is manufactured in a large amount or when the transfer sheets of different images are manufactured little by little. In either case, the technical issue is to provide a method for manufacturing a transfer sheet that can significantly reduce the manufacturing cost, and as a result of repeated research and experiments aimed at its realization, the release surface After a toner image layer is laminated on the release surface of a release sheet having a toner image by an electrophotographic copying machine using a toner, when the toner image layer is in a semi-molten state, powdery heat is applied on the toner image layer. If the powdery heat-melting adhesive other than the powdery heat-melting adhesive fixed on the toner image layer is removed by spraying and fixing the meltable adhesive, the outline of the toner image layer Corresponding to Obtained a finding should Katsumoku that agent layer can be easily formed, is obtained by achieving the technical problems.

[0008]

The above technical problems can be solved by the present invention as follows.

That is, in the transfer sheet according to the present invention, the toner image layer laminated by an electrophotographic copying machine using toner on the release surface of the release sheet having the release surface and the toner image layer are half. The adhesive layer comprises a powdery heat-melting adhesive which is dispersed and fixed on the toner image layer in the molten state.

Further, in the method for producing a transfer sheet according to the present invention, an image layer laminating step of laminating a toner image layer on the release surface of a release sheet having a release surface by an electrophotographic copying machine using toner. And an adhesive agent spraying step of spraying and fixing a powdery heat-meltable adhesive agent on the toner image layer when the toner image layer laminated by the image layer laminating step is in a semi-molten state. Is.

Further, in the method for producing a transfer sheet according to the present invention, an image layer laminating step of laminating a toner image layer on the release surface having a release surface by an electrophotographic copying machine using toner on the release surface. And an adhesive agent spraying step of spraying and fixing a powdery heat-melting adhesive agent on the toner image layer when the toner image layer stacked by the image layer stacking step is in a semi-molten state, and the adhesive agent spraying step. After the step, an adhesive agent removing step of removing the powdery heat-melting adhesive agent other than the powdery heat-melting agent agent fixed on the toner image layer is included.

Further, in the present invention, in any one of the above-mentioned methods for producing a transfer sheet, a step of heating the toner image layer laminated in the adhesive layer dispersing step in the image layer laminating step to a semi-molten state, and the semi-molten step. And a step of spraying and fixing a powdery heat-melting adhesive on the toner image layer in the state.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

Embodiment.

FIG. 1 is a vertical cross-sectional view schematically showing the transfer sheet according to the present embodiment, and FIG. 2 is a vertical cross-sectional explanatory view showing a manufacturing process of the transfer sheet shown in FIG. 2 is a longitudinal cross-sectional explanatory view showing a procedure for transferring the toner image of the transfer sheet shown in FIG. 1 to a transfer target. In these figures, 1 is a release sheet 3 having a release surface 2 and the release sheet 3. A toner image layer 4 laminated using an electrophotographic copying machine using toner (hereinafter simply referred to as “electrophotographic copying machine”) on the release surface 2 of the mold sheet 3, and the toner image layer 4 is semi-melted. The transfer sheet comprises an adhesive layer 6 formed by spraying and fixing a powdery heat-melting adhesive 5 on the toner image layer 4 in the state.

The release sheet 3 comprises a base sheet 7 and a release layer 8 formed by applying a release agent on the base sheet 7 and stacking the release agent.
And the surface of the release layer 8 becomes the release surface 2.

The base sheet 7 may be made of a material having heat resistance that does not deteriorate when the transfer sheet 1 is heated and pressed during transfer, and is made of, for example, paper or a synthetic resin such as polyester. A film may be used.

As the release agent for forming the release layer 8,
A commercially available release agent such as silicone resin or fluororesin may be used.

A polyolefin sheet may be used as the release sheet 3, and in this case, one side of the polyolefin sheet becomes the release surface 2.

The toner image layer 4 can be formed by copying an original drawing on which patterns, patterns, photographs, characters, etc. are drawn by using a well-known electrophotographic copying using toner, preferably a color copying machine. it can. A commercially available toner can be used as the toner for the electrophotographic copying machine. Specifically, the toner blue manufactured by Canon Inc. (F42-0515:
Product number), the same red color (F42-0525: product number), the same yellow color (F42-053
5: Part number) and the same black color (F42-0505: Part number) and toner Ricoh Co., Ltd. blue color (63-6210: Part number), the same red color (63-6)
209: product number), the same yellow (63-6208: product number), and the same black (63-6207: product number).

As the powdery heat-melting adhesive 5, an adhesive mainly composed of polyester, urethane or the like may be used. Specifically, the particle size x is 0 μm <x ≦ 80 μm.
(Trade name: manufactured by Daicel Chemical Co., Ltd.), pratamide (trade name: manufactured by Nippon Rilsan Co., Ltd.) having a particle size x of 80 μm ≦ x ≦ 160 μm, or Dunhuls (trade name of product having a particle size x of 0 μm <x ≦ 80 μm) : Nitto Boseki Co., Ltd.) or the like may be used.

Next, a method of manufacturing the transfer sheet will be described with reference to FIG.

First, as shown in FIG. 2A, a release agent is uniformly applied onto the base sheet 7 to laminate a release layer 8 to obtain a release sheet 3, and then the release sheet 3 is obtained. (B), the toner image layer 4 is laminated on the release surface 2 of the release sheet 3 by copying an original drawing such as a design, a pattern, a photograph, and a character by using an electrophotographic copying machine. Solidify and fix (image layer laminating step). Next, as shown in FIG. 2C, the solidified and fixed toner image layer 4 is heated at a temperature near 100 ° C. to be in a semi-molten state, and then, as shown in FIG. The powdery heat-melting adhesive 5 is sprayed and fixed on the melted toner image layer 4 (adhesive spraying step). Subsequently, as shown in FIG. 2E, the powdery heat-melting adhesive 5 other than the powdery heat-melting adhesive 5 fixed on the toner image layer 4 is removed by blowing air, The transfer sheet 1 can be obtained by forming the adhesive layer 6 corresponding to the image on the toner image layer 4 (adhesive removing step).

When removing the powdery heat-melting adhesive 5 other than the powdery heat-melting adhesive 5 fixed on the toner image layer 4, brushing may be used with a brush or the like.

When the solidified and fixed toner image layer 4 is heated to a semi-molten state, if it is excessively heated beyond the melting start temperature of the powdery heat-meltable adhesive to be used,
The powdery heat-melting adhesive 5 sprinkled on the part of the release surface 2 where the toner image layer 4 is not laminated adheres to the release surface 2 to release the powdery heat-melting adhesive 5. In some cases, it cannot be removed from the surface 2 and the adhesive layer 6 corresponding to the contour of the toner image layer 4 cannot be formed.

Therefore, the temperature for heating the solidified and fixed toner image layer 4 is such that the toner image layer 4 is in a semi-molten state and the toner image layer 4 on the release surface 2 is not laminated. Powdered hot melt adhesive 5
It is necessary to select a temperature at which does not weld to the release surface 2,
In consideration of the melting point of the powdery heat-meltable adhesive 5 used, a temperature around 100 ° C. in which a normal commercial toner becomes a semi-molten state may be selected. For example, when a powdery hot-melt adhesive 5 is a diamide having a particle size x of 0 μm <x ≦ 80 μm (trade name: manufactured by Daicel Chemical Co., Ltd.), it should be selected within a range of 100 ° C. to 130 ° C. Is preferred.

According to the present embodiment, the toner image layer 4 is heated to a semi-molten state and then the powdery heat-melting adhesive 5 is sprinkled on the semi-molten toner image layer 4.
Since it is fixed, the sprayed powdery heat-melting adhesive 5 is fixed only on the toner image layer 4 due to the tackiness of the toner image layer 4 in a semi-molten state, and the toner image layer 4 on the release surface 2 is fixed. The powdery heat-melting adhesive 5 sprayed over the non-laminated portion or toner image layer 4 is wiped off from the release sheet 3 only by spraying the powdery heat-melting adhesive 5 on the toner image layer 4. Therefore, the adhesive layer 6 corresponding to the contour of the toner image layer 4 can be easily formed.

Further, while the toner image layer 4 immediately after the toner image layer 5 is laminated on the release surface 2 of the release sheet 3, the toner image layer 4 is maintained in a semi-molten state, the toner image layer 4 is thermally melted in powder form on the toner image layer 4. The transfer sheet 1 can be obtained by spraying the adhesive agent 5 without heating the toner image layer 4 as described above.

Next, the transfer procedure of the transfer sheet will be described with reference to FIG.

First, as shown in FIG. 3A, the surface of the transfer sheet 1 on which the adhesive layer 6 is laminated is brought into close contact with the transfer target 9 such as a cloth or a wooden panel at a position where the toner image is to be transferred. . Next, as shown in FIG. 3B, the transfer sheet 1 is transferred to the transfer target 9 by using a thermocompression bonding machine (not shown).
Is heated and pressed at a predetermined temperature for a predetermined time to melt the powdery heat-melting adhesive 5 and adhere the transfer sheet 1 onto the transfer target 9. At this time, the melted powdery heat-melting adhesive 5 is fixed on the entire surface of the toner image layer 4 without any space. Finally, as shown in FIG. 3C, after the adhesive layer 6 is cooled to solidify the melted heat-melting adhesive, the release sheet 3 is separated from the transfer sheet 1 adhered to the transferred body 9. When peeled off,
The toner image is transferred to the transferred material 9.

[0031]

EXAMPLES Example 1.

First, the base sheet 7 has a thickness of 10 μm.
Release paper (ST / 60 / OKT / T: product number: Lintec Co., Ltd.) is prepared, and a release agent (printing silicone: product name: Toray Co., Ltd.) is applied onto the release paper to obtain a thickness of 10
A release sheet 3 having a release layer 8 of μm laminated was obtained.

Next, a color copying machine (CLC5000: product number: manufactured by Canon Inc.) was used to print toner blue (F42-0515: product number: manufactured by Canon Inc.) and red (F42) on the release surface 2 of the release sheet 3. -0525: Product number: Canon Inc.), same yellow (F42-0535: Product number: Canon Inc.)
And the same black color (F42-0505: product number: manufactured by Canon Inc.) are used to copy the original drawing in which circular patterns colored in blue, red, yellow and black are copied, and the toner image layer 4 having a thickness of 10 μm is copied. Were laminated.

Next, the release sheet 3 having the toner image layer 4 laminated thereon is heated from the surface on which the toner image layer 4 is not laminated at a temperature of 110 ° C. for 3 seconds so that the toner image layer 4 is in a semi-molten state. On the semi-molten toner image layer 4, a powdered hot melt (Daiamide: trade name: manufactured by Daicel Chemical Co., Ltd.) 5 having a particle size x of 0 μm <x ≦ 80 μm is provided.
After spraying and fixing at 0.025 g / cm ² , the powdered hot melt 5 other than the powdered hot melt 5 fixed on the toner image layer 4 is removed by air to form the image on the toner image layer 4. A corresponding adhesive layer 6 having a thickness of 80 μm was formed to obtain a transfer sheet 1.

Subsequently, a pressure bonding machine (FA4500: product number: manufactured by HASHIMA Co., Ltd.) is used with the surface of the transfer sheet 1 on which the adhesive layer 6 is formed being in close contact with the cotton cloth which is the transfer target 9. 12 at a temperature of 160 ° C and a pressure of 500 g / cm ^2.
After releasing the release sheet 3 after heating and pressurizing for 2 seconds, as shown in FIG.
As shown in, the toner image of the circular pattern was beautifully transferred to the cotton cloth.

Example 2.

A transfer sheet 1 was obtained in the same manner as in Example 1 except that the temperature for heating the release sheet 3 on which the toner image layer 4 was laminated was changed to 100 ° C., and the same as in Example 1. Then, the toner image was transferred to the transfer target 9.

Also in this example, the toner image of the circular pattern was beautifully transferred onto the cotton cloth which is the transfer target 9.

Example 3.

A transfer sheet 1 was obtained in the same manner as in Example 1 except that the temperature for heating the release sheet 3 having the toner image layer 4 laminated thereon was changed to 130 ° C., and further the same as in Example 1. Then, the toner image was transferred to the transfer target 9.

Also in this example, the toner image of the circular pattern was beautifully transferred to the cotton cloth which is the transfer target 9.

[0042]

According to the present invention, the toner image layer is laminated by the electrophotographic copying machine, and the adhesive layer is sprayed with the powdery heat-melting adhesive when the toner image layer is in a semi-molten state.
Since the transfer sheet can be obtained by removing and fixing the powdery heat-melting adhesive other than the powdery heat-melting adhesive that has been fixed to the toner image layer, it is of course not necessary to perform the plate making process. Since a screen printing process, an offset printing process or a gravure printing process is not required in the process of forming the transfer sheet, it is possible to significantly reduce the manufacturing cost, and a specialized printing technique such as alignment work is performed. Does not even need.

Further, according to the present invention, since the adhesive layer corresponding to each image can be formed by a simple means of spraying the powdery heat-melting adhesive, a large number of transfer sheets of the same image can be formed. The manufacturing cost can be reduced not only when manufacturing, but also when manufacturing transfer sheets of different images little by little.

Furthermore, since it is possible to connect to a computer by using a color copying machine, it is possible to easily edit the colors and designs of patterns, patterns, photographs, characters, etc. of the original drawing to be copied. The edited pattern can be used as it is as a toner image.

Therefore, it can be said that the industrial applicability of the present invention is very high.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view schematically showing a transfer sheet according to an embodiment.

FIG. 2 is an explanatory longitudinal sectional view showing a manufacturing process of the transfer sheet shown in FIG.

FIG. 3 is an explanatory longitudinal sectional view showing a procedure for transferring the toner image on the transfer sheet shown in FIG. 1 to a transfer target.

FIG. 4 is a perspective view showing a pattern transferred to a cloth as a transfer target.

[Explanation of symbols]

1 transfer sheet 2 Release surface 3 Release sheet 4 Toner image layer 5 Powdery hot-melt adhesive 6 Adhesive layer 7 base sheet 8 Release layer 9 Transferee

Claims (4)

[Claims] 1. A toner image layer laminated by an electrophotographic copying machine using a toner on the release surface of a release sheet having a release surface and the toner image layer when the toner image layer is in a semi-molten state. Disperse the powdery heat-melting adhesive on the image layer.
A transfer sheet comprising a fixed adhesive layer. 2. An image layer laminating step of laminating a toner image layer on the releasing surface of a releasing sheet having a releasing surface by an electrophotographic copying machine using toner, and an image layer laminating step. A method for producing a transfer sheet, comprising a step of spraying an adhesive to spray and fix a powdery heat-melting adhesive onto the toner image layer when the toner image layer is in a semi-molten state. 3. An image layer laminating step of laminating a toner image layer on the releasing surface of a releasing sheet having a releasing surface by an electrophotographic copying machine using toner, and an image layer laminating step. When the toner image layer is in a semi-molten state, an adhesive spraying step of spraying and fixing the powdery heat-melting adhesive on the toner image layer, and fixing on the toner image layer after the adhesive spraying step. An adhesive removing step of removing a powdery heat-melting adhesive other than the powdery heat-melting adhesive. 4. A step of heating the toner image layer laminated by the image layer laminating step until it is in a semi-molten state in the adhesive dispersion step, and a powdery thermal fusion on the toner image layer in the semi-molten state. 4. The method for producing a transfer sheet according to claim 2, further comprising a step of spraying and fixing a conductive adhesive.