JPH0635204B2 - Method for manufacturing transfer sheet - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for producing a transfer sheet, and particularly to easily produce a transfer sheet having a mirror image by using a copying machine usually used for office work. It is about the method.

[Background of the Invention]

Generally, a so-called transfer paper (hereinafter referred to as a transfer sheet) having a mirror image pattern drawn on the surface thereof is used for transferring (transferring) a predetermined pattern to articles such as pottery, glass cups, shirts, etc. Is known).

By the way, such a transfer sheet is highly useful as a decorative member for various articles, and is particularly suitable for use in production of small-lot products, production of individual one-piece products, and the like. If the transfer sheet can be easily manufactured even by a consumer who uses the transfer sheet, the versatility will be dramatically increased.

[Object of the Invention]

The present invention has been made from such a viewpoint, and an object thereof is to provide a method for easily producing a transfer sheet using a generally-used copying machine.

[Outline of Invention]

Thus, the feature of the method of the present invention made to realize the above-mentioned object is that the first image forming method forms the toner image on the first sheet.
And the second step of transferring the toner image from the first sheet to the transfer sheet, wherein the first sheet and the transfer sheet are overlapped with each other with the toner image interposed therebetween, and pressure is applied.
A second step of heating, wherein the transfer sheet on which a toner image is formed is manufactured by peeling the first sheet from the transfer sheet, wherein the first sheet is used as the transfer sheet. A sheet having a lower rigidity and a thickness of 50 μm or less is used.

The first step in the present invention can be carried out by using a known general copying machine using toner as it is, and a copying machine which can be particularly preferably used is, for example, PC10 manufactured by Canon Inc. , 20 etc. can be mentioned.

The first sheet as the toner carrier used in the first step is a relatively thick resin sheet (hereinafter referred to as "resin sheet"), and the base material does not penetrate into the toner and is incompatible with the toner. It is preferable that the sheet of No. 2 is used and that the formed toner image exhibits a weak fixing state to the extent that transfer to the transfer sheet in the second step is not hindered.

For such a resin sheet, a plastic film such as a synthetic paper or a polyester film can be used, depending on the composition of the toner used.

To fix the toner image on the resin sheet in the first step,
Either heat fixing or pressure fixing may be used.

The transfer sheet used in the second step forms the base material (mounting sheet) of the transfer sheet, and is required to have the following properties. That is, when using the transfer paper prepared in the first place, the toner image (that is, the desired pattern) exhibits a releasability that does not prevent the transfer of the toner image onto the transfer target article, and the toner is transferred from the transfer sheet before use. The image should have a fixing power that can prevent peeling and falling off easily. Secondly, in relation to the resin sheet carrying the toner image obtained in the first step, the resin sheet is a sheet having relatively higher rigidity than the transfer sheet, while the transfer sheet is more than the resin sheet. It has the property of being a sheet with relatively low rigidity. That is, the transfer sheet is capable of exhibiting good conformability to the unevenness of the toner image,
If the respective fixing forces between the resin sheet and the transfer sheet are F _A and F _B , the relationship F _A <F _B (preferably F _A << F _B ) is satisfied as a result.

As such a transfer sheet, a polyester film, a polyimide film, a Teflon film or the like is used, although it depends on the composition of the toner to be used, and a transfer sheet having a thickness of usually 50 μm or less is preferably used.

The second step is performed by superposing the resin sheet and the transfer sheet with the toner image in between and pressurizing and heating the resin sheet and the transfer sheet through a nip portion of a pair of contact rotation rollers having heating means such as a heater. . Following this, after the melted toner is cooled, the curvature of the resin sheet is made larger than that of the transfer sheet, and the toner is peeled off from the transfer sheet to manufacture a transfer sheet.

The curvature of the resin sheet can be made larger than that of the transfer sheet by, for example, maintaining the transfer sheet in a tensioned state, and peeling off one end of the resin sheet.

As the toner used in the present invention, those used in a general copying machine can be used, and specifically, so-called black toner, single color toner, full color toner may be used, and toner for two-component development may be used. Any one-component magnetic toner or the like may be used.

Example of Invention

Hereinafter, specific examples of the present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional view showing an example of a copying machine which can be used for implementing the present invention. In the figure,
1 is a document table on which a document is placed and reciprocates, 2 is an illumination system for illuminating a document, 3 is an image forming system for image formation, 4 is a photoconductor, 5
Is a corona charger for charging the photoconductor, 6 is a developing device having a powder developer for visualization, 7 is a transfer corona charger for transferring an image onto a transfer sheet, 8 is a cleaner for cleaning the photoconductor, 9 is a fixing roller for fixing a visible image on a transfer sheet, 10 is a tray for receiving the transfer sheet, S is a toner image carrier as a resin sheet (hereinafter referred to as copy sheet), and S ₁ is a copy sheet having a fixed toner image. Is.

Next, an example of a procedure for producing a transfer paper sheet according to the method of the present invention will be described.

First, a document (not shown) is placed on the document table 1 of the above-mentioned copying machine, and a normal copying operation is performed to form a predetermined toner image on the copy sheet S (first step). The copy sheet S used at this time is a sheet having the above-mentioned properties, that is, toner does not enter the sheet,
In addition, a sheet that is incompatible with the toner composition resin is used, and in this embodiment, a 100 μm-thick OHP polyester film was used.

Next, the copy sheet S on which the above-mentioned toner image is formed
_{On the} other hand, in this embodiment, the transfer sheet 15 is made of a flexible polyester film having a high surface smoothness of 12 μm.
And the pair of rollers 11 and 1 shown in FIG.
Pass through the nip part of the pressure and heat fixing device consisting of 2. The fixing device for the second step illustrated in FIG. 2 includes a heating roller 11 having a heating source and a pressure roller 12 that forms a nip portion in a predetermined pressure state between the heating roller 11. An arbitrary pressure is applied between the rollers 11 and 12, and the recording sheet S ₁ and the transfer sheet 15 superposed on the recording sheet S ₁ are nipped and conveyed in an arrow direction at an arbitrary speed. There is. The number of rotations of the rollers 1 and 2 is set to a predetermined value. Further, these holding and conveying rollers are made of a material such as metal or rubber, and the combination may be single or composite, and the number of rollers may be two or three. The heating source may be a roller on the toner image side or a plurality of rollers, and the surface temperature on the roller side in contact with the toner image side is the same as that of the toner image 1.
It is set above the softening point of 4 and the heater 3 is used as the heating source.
Not limited to the above, other means may be used.

As shown in FIG.
The transfer sheet 15 is shown in FIG.
In addition to being in close contact with the toner image 14 as shown in (a), it is in close contact with the copy sheet S ₁ and becomes so-called packed.

That is, the transfer sheet 15 extends in accordance with the shape of the toner image 14, has a curvature, and is in close contact with the toner image 14, and the surface of the toner image 14 is also formed in a smooth state. On the other hand, as shown in FIG. 3 (b), when the transfer sheet 15 'is, for example, a 100 μ polyester film, the toner image
The transfer sheet 15 ′ does not adhere to the shape of 14, and the toner image 14 flows to the periphery 140, and the image is greatly damaged.

Next, the copy sheet S ₁ is peeled off from the toner image surface of the transfer sheet 15 thus obtained (third step). This peeling is performed immediately after the toner image 14 is heated and pressed as shown in FIG. That is, if the composition binder of the toner image 14 is softened, the toner image 14 is irregularly distributed on the toner images 14a and 1a.
4b is transferred. Therefore, it is necessary to remove the toner image 14 after the toner image 14 has cooled and the adhesiveness of the toner has decreased.

FIG. 5 shows a state in which the edges of the thin transfer sheet 15 are tensioned to the arrows V ₁ and V ₂ , respectively, and the copy sheet S ₁ is peeled off with a curvature in the direction of the arrow V ₃ . That is, when the copy sheet S ₁ is peeled off, the toner image surface on the transfer sheet 15 and the copy sheet S 1
That the curvature of the copy sheet S ₁ in ₁ of the separation point is set to be larger than the film sheet base is important for Kaiho a good transfer of the toner image. FIG. 6 specifically shows the effect of the magnitude of the curvature. When the copy sheet S ₁ is peeled from the toner image 14 on the transfer sheet 15, the peeling point between the toner image 14 and the copy sheet S ₁ is separated.
The angle P ₁ of (P) is larger than the angle Q ₁ at the peeling point (Q) between the transfer sheet 15 and the toner image 14, so that the peeling stress applied at the peeling point is larger at the point P, and the toner image 14
It will be appreciated that the toner is transferred from the copy sheet S ₁ and the toner image transfer layer is obtained as a mirror image on the transfer sheet 15.

Further, as shown in FIG. 7, a transfer sheet 15 having a thickness of 50 μm or less is integrated with one side of a mount 16 made of paper or film with an adhesive portion 17, and a copy sheet S ₁ is sandwiched between the transfer sheet 15 and the roll 11 as shown in FIG. may be between rolls 12 so as to sandwiching conveyor, thus it is not only convenient handling if the mount 16 as in FIG. 9 folded on the back side of the transfer sheet 15, and holding the arrow V ₄ copies It can be conveniently used for peeling the sheet S ₁ to the arrow V ₃ .

As an example of transfer using the transfer sheet prepared as described above, as shown in FIG. 10, the toner image transfer of the main transfer sheet is performed on the surface of the cover sheet 19 of the note 18, which is the transfer target material. By superposing the layers 14 and applying heat and pressure using a heating press plate to transfer the toner image 14, the thin transfer sheet 15 is peeled off in the direction of the arrow.
On the cover sheet 19, a toner image of a glossy and clear normal image having a high density can be transferred.

As an article to be transferred, an article having unevenness such as cloth, paper or glass, which usually has high toner adhesion, is suitable.

〔The invention's effect〕

As described above, according to the method of the present invention, it has been difficult to make the conventional small-scale production, or to make it easily by the user, by fully utilizing the function of the copying machine which is generally widely used. The transfer sheet can be manufactured relatively easily, and since the transfer sheet has a rigidity relatively low with respect to the first sheet and is 50 μm or less, toner on the first sheet is used. Stretching in good conformity with the uneven shape of the image, not only having a curvature and adhering, but also without causing the toner image to flow to the periphery and significantly impair the image,
It has an effect that the surface is formed in a smooth state, and since the existing copying machine is used, the manufacturing cost can be reduced, and the usefulness thereof is extremely great.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of the configuration outline of a copying machine used for image formation, FIG. 2 is a view for explaining the second step of heating and pressurizing, and FIGS. 3 (a) and 3 (b) are heating, It is a figure showing the state after pressurization, (a) explains the example of the present invention, and (b) explains a comparative example, respectively. FIG. 4 is a diagram showing a peeled state at the time of heating in a comparative example, FIGS. 5 and 6 are diagrams for explaining the peeled state, and FIGS. 7, 8 and 9 are second diagrams of the method of the present invention. FIG. 10 is a diagram for explaining another example of the process, and FIG. 10 is a diagram for explaining the usage state of the transfer paper obtained by the method of the present invention. S, S ₁ : Copy sheet, 11: Heating roller 12: Pressure roller, 13: Heating source 14: Toner image, 15, 15 ': Transfer sheet 16: Mount

Claims (1)

[Claims] 1. A first sheet for forming a toner image on a first sheet.
And the second step of transferring the toner image from the first sheet to the transfer sheet, wherein the first sheet and the transfer sheet are overlapped with each other with the toner image interposed therebetween, and pressure is applied.
A second step of heating, and a method for producing a transfer sheet on which a toner image is formed by peeling the first sheet from the transfer sheet, wherein the transfer sheet is the first sheet. A method for manufacturing a transfer sheet, which has a lower rigidity and a thickness of 50 μm or less.