JP2897793B2 - Image forming method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming method for transferring and forming an image on an image forming object such as cloth, paper, wood, plastic and the like.

[0002]

2. Description of the Related Art Conventionally, a photosensitive and pressure-sensitive medium in which microcapsules mainly containing a dye precursor, a photocurable resin and a photopolymerization initiator are supported on a surface layer, and a dye precursor which is an inclusion of the microcapsules. The surface of the photosensitive and pressure-sensitive medium is irradiated with light based on image information using a substance that reacts with the substance and develops a color, a so-called developer, which is carried on the surface layer, and is photocured by the irradiation light. By curing the conductive resin, and then superimposing the developer medium on the surface of the photosensitive pressure-sensitive medium and applying pressure, the uncured microcapsules are destroyed, whereby the dye precursor and the developer in the inside are destroyed. A device for forming a color image on a developer carrying surface by reacting with a developer is known, for example, from JP-A-61-173981.

[0003] However, according to the above apparatus, a color image can be formed on the above-described developer medium, but an image cannot be formed on plain paper, cloth, wood, or the like. Also, if you dare to form an image on such paper or cloth, after forming the image on the developer medium,
A method of gluing this to a medium such as paper or cloth is conceivable, but this method is not preferable because the thickness of the medium increases and its weight increases.

Accordingly, the applicant of the present invention has proposed a developer carrying surface of a developer medium on which an image is formed, and a thermoplastic resin carrying surface of a heat-fusible sheet having a thermoplastic resin carried on a sheet substrate. After superimposing and heating / pressing, and after cooling, the support of the developer medium is peeled off, so that only the developer layer (image layer) of the developer medium is transferred to the heat-fusible sheet. Paper, fabric,
A method for forming an image on the image forming body by adhering the heat-fusible sheet having the developer layer transferred thereon to an image forming body such as a plastic film has been developed (Japanese Patent Laid-Open No. 1-206).
No. 092).

In this method, the heat-fusible sheet is
Since it is directly adhered to the image forming body together with the transferred developer layer, the flexibility of the image forming body is impaired by the sheet base of the heat-fusible sheet. For this reason, in order to form an image on an image forming body such as a cloth which requires flexibility or the like, JP-A-2-3390, Japanese Utility Model Application Laid-Open No. 2-1
Nos. 0062 and 2-10063 have been developed.

[0006] This method is to consider the adhesive strength between the sheet base of the heat-fusible sheet, the thermoplastic resin, the color developer layer of the color developer medium and the image-forming body. This is a method in which the sheet substrate of the heat-fusible sheet adhered to the image-forming body together with the layer is peeled off (the same method is used for transferring only the developer layer to the heat-fusible sheet).

[0007]

However, for example, when an image is composed of letters such as alphabets,
When an image is transferred and formed on a fabric by the above method, before bonding the heat-fusible sheet to which the color developer layer has been transferred to the image forming body, cut out the character portion of the heat-fusible sheet. Must be tedious and time consuming. Also, it does not take a long time to cut out a character around a circle or square without cutting it out exactly as it is,
The image-formed body to which such characters are adhered carries a thermoplastic resin and a color developer layer in places other than the characters, so that the appearance is impaired and the commercial value is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and provides an image forming method for forming an image formed matter which does not impair the aesthetic appearance in a short time even if the image is a character or a figure. It is in.

[0009]

Means for Solving the Problems An image forming method of the present invention to achieve this purpose is formed on a support Rutotomo
An image forming layer composed of an image area and a non-image area is overlapped with a thermoplastic resin-carrying surface of a heat-fusible sheet having a thermoplastic resin carried on a sheet substrate, and heated and pressed to be bonded. by peeling off the support after, and transferring the image forming layer on the heat-fusible sheet, screen sheet
A stencil is formed in a region corresponding to only the image portion , and the stencil forming portion of the screen sheet is aligned with the image portion of the image forming layer transferred to the heat-fusible sheet.
And then heat it through the screen sheet
Fusing sheet and heat and pressure are superimposed and an image forming member, then a and the heat-fusible sheet and the screen sheet to be removed from the object imaging member. Further, in the above image forming method, when the heated and pressurized by the heat-fusible sheet and the image-forming member superimposed over the screen sheet, the subscription <br/> and the heat-fusible sheet Nshito The point is to insert an adhesive between the two.

[0010]

According to the image forming method of the present invention having the above procedure,
Only the necessary image portion is beautifully transferred and formed on the image forming body in a short time.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged cross-sectional view of an image-formed product 1 formed by the image forming method according to the present invention. On the cloth 32, an adhesive layer 22b, a color developer layer 2a and a thermoplastic resin 12b are formed.

Hereinafter, the process of forming the image forming product 1 will be described step by step.

First, a procedure for forming an image on the developer medium 2 by the color image forming apparatus M shown in FIG. 4 will be described.

The photosensitive pressure-sensitive medium 3 has a surface layer on which microcapsules containing a dye precursor and a photosensitive substance are carried. The photosensitive pressure-sensitive medium 3 is mounted in a roll shape with the microcapsule carrying surface facing outward by a supply roll below the main body of the apparatus M, and is fed toward a take-up roll in the right direction in the figure. An exposure table 8 is disposed below the photosensitive pressure-sensitive medium 3 between the supply roll and the take-up roll. Above the exposure table 8, a light source 5 for irradiating the surface of the document table 4 is provided.

The document 4 is located between the exposure table 8 and the light source 5.
A lens 6 for forming an image of the reflected light from the surface on the surface of the photosensitive and pressure-sensitive medium 3 is provided. The light source 5, the lens 6, and the exposure table 8 constitute a unit for performing a predetermined exposure process on the photosensitive pressure-sensitive medium 3. A developer medium 2 having a developer layer 2a carried on a support 2b is accommodated above the winding roll in the apparatus. Between the exposure table 8 and the take-up roll, a pressure roller 7 for superposing the exposed pressure-sensitive medium 3 and the developer medium 2 and performing pressure development is arranged. .

In the color image forming apparatus M configured as described above, the irradiation light from the light source 5 reflected by the original 4 is condensed by the lens 6 onto the photosensitive and pressure-sensitive medium 3.
Then, light is imaged on the surface of the photosensitive pressure-sensitive medium 3 and is exposed on the exposure table 8. Next, a transport system (not shown)
The capsule-carrying surface of the photosensitive pressure-sensitive medium 3 and the developer-carrying surface of the developer medium 2 are superimposed on each other, and both are pressed through the pressure roller 7 to break the uncured microcapsules. The dye precursor that has flowed out reacts with the developer. Then, a color image is formed on the developer layer (image layer) 2 a of the developer medium 2.

In this embodiment, as shown in FIG. 2, the developer medium 2 has a structure capable of being separated into a support 2b and a developer layer 2a. For the support 2b, a material having relatively good releasability, such as glassine paper, coated paper, polyester film, polyethylene film, and polypropylene film, is selected. Further, the developer (layer) 2a has p-
A fine particle such as a phenolic compound such as phenyl-phenol, or an aromatic carboxylic acid compound such as salicylic acid, gallic acid, or propyltannic acid is appropriately mixed with a thermoplastic binder to such an extent that coloring is not hindered.

Next, the process of transferring and forming an image from the heat-fusible sheet 12 and the developer medium 2 on which an image has already been formed by the heat-fusible sheet will be described.

As shown in FIG. 3A, the heat-fusible sheet 1
2 is a transparent thermoplastic resin 12b on a sheet substrate 12a.
Is carried, and the adhesive force between the sheet base material 12a and the thermoplastic resin 12b is the same as the developer medium 2 shown in FIG.
Is adjusted so as to be stronger than the adhesive force between the support 2b and the developer layer 2a, but has a structure in which the interface peels off.

The sheet base 12a of the heat-fusible sheet 12 of the present embodiment may be any type of plastic film or paper as long as it is not deformed by a hot-press roll described later. it can. Further, the thermoplastic resin 12
b: ethylene-vinyl acetate copolymer, polyolefin polymer, rosin ester, vinyl alcohol-vinyl acetate copolymer, vinyl alkyl ether-maleic anhydride copolymer, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer Vinyl resin such as coalescence, polyethyl acrylate,
Acrylic resins such as polybutyl methacrylate and polymethyl cyanoacrylate, styrene resins, polyamide resins, waxes and the like can be used alone or as a mixture.

In the present embodiment, a glass base paper in which a silicon-based release agent is applied to the sheet base 12a of the heat-fusible sheet 12 is used, and the water resistance of the thermoplastic resin 12b is taken into consideration.
A mixture of 8 parts of styrene / acrylic copolymer and 12 parts of ethylene / vinyl acetate copolymer (softening point of about 100
° C), the thermoplastic resin 12b is converted into the sheet base material 12a.
It was applied on top using a hot melt applicator. Then, one end portion of the heat-fusible sheet 12 is bent as shown in FIG. 3A and bonded with the thermoplastic resin 12b inside, so that the portion A in FIG. 3A is heated. However, no adhesion occurs. This is a portion to be held by hand when the support 2b of the developer medium 2 is peeled off later.

The surface of the developer layer 2a of the developer medium 2 on which an image is formed and the thermoplastic resin 12b of the heat-fusible sheet 12 are superimposed on each other and a hot-press roller heated to about 140 ° C. (Not shown) to apply heat and pressure to fuse the developer medium 2 and the heat-fusible sheet 12. After cooling to room temperature, the support 2b of the developer medium 2 is peeled off, and only the developer layer 2a is transferred to the thermoplastic resin 12b side of the heat-fusible sheet 12. (Refer to FIG. 3B) In this embodiment, as the color developer medium 2, a material having a structure that can be separated into the support 2b and the color developer layer 2a was used, and the interface was peeled off. If the peeling device for image transfer described in Japanese Utility Model Application Laid-Open No. 2-2166 is used even from a developer medium which cannot be separated by the above method, the support is peeled off by applying various physical properties of the developer layer and a mechanical relationship. be able to.

Next, although not necessary depending on the composition of the developer layer and the image-forming member, in the present embodiment, the developer layer of the heat-fusible sheet 12 to which the developer layer 2a has been transferred is used. 2a
Form an adhesive layer on the side. This consists of the developer layer 2a and the fabric 3
2 is formed in order to more firmly bond them to each other. The adhesive layer is not limited as long as it can bond the color developer layer 2a and the image forming body, such as heat sensitivity, pressure sensitivity, and photosensitivity. The heat-sensitive adhesive is good in simplifying the apparatus used for the heat-sealing, and the hot-press roller used when the above-described developer medium 2 and the heat-fusible sheet 12 are fused is used. Since it is possible, a heat-sensitive adhesive is more preferable. In this embodiment, as shown in FIG. 5, the heat-sensitive adhesive 22b is used.
Adhesive sheet 22 in which is carried on sheet base material 22a
It was used. The sheet base material 22a is made of kraft paper coated with a silicone release agent, and is made of a heat-sensitive adhesive 22b.
As a polyolefin-based thermoplastic resin (softening point of about 95
° C).

The heat-sensitive adhesive 22b of the adhesive sheet 22
And the developer layer 2a transferred to the heat-fusible sheet 12 are superimposed, passed through a hot-press roller (not shown) heated to about 140 ° C., and heated and pressurized. Sheet 12
And the adhesive sheet 22 are fused. After cooling to room temperature, the sheet substrate 22a is peeled off, and the heat-sensitive adhesive 22b is carried on the heat-fusible sheet 12 (FIG. 3).
(C)).

On the other hand, a screen sheet 42 having a heat-sensitive resin layer 42b supported on a mesh 42a of nylon, polyester or the like as shown in an enlarged sectional view in FIG. 6 is generally commercially available, and has a heat-sensitive temperature of 210 to 280. ° C. According to the information of the document 4 on the screen sheet 42, a thermosensitive resin is melted to make a plate. Plate making may be performed using a scanner, a computer, and a thermal printer, but the simplest method is to use a copier or a fax copying function using thermal paper. Accordingly, only the image portion has a hole between the meshes on the screen sheet 42.

The developer layer 2a and the heat-sensitive adhesive 22b
Heat-sensitive adhesive 22 of heat-fusible sheet 12 carrying
The side b and the screen sheet 42 are placed on a hot press table so that the screen sheet 42 faces the fabric 32 with the position of the image aligned. And the pressing condition is 170 ° C,
Pressing was performed at 200 g / cm 2 for 40 seconds. Immediately thereafter, the heat-fusible sheet 12 and the screen sheet 42
Separated from By doing so, the heat-sensitive adhesive 22b, the color developer layer 2a, and the thermoplastic resin 12b pass through the gap between the meshes of the screen sheet 42 and adhere to the fabric 32 only where holes are opened between the meshes of the screen sheet 42. I do.

As described above, the image-formed product 1 formed by the image forming method of the present invention is completed.

[0028]

As is clear from the above description,
ADVANTAGE OF THE INVENTION According to this invention, even if an image is a character, a figure, etc., the image formed matter which does not impair an aesthetic appearance is formed in a short time, and the image formed matter produced by this invention has high commercial value and has an industrially remarkable effect.

[Brief description of the drawings]

FIG. 1 is a perspective view of a formed image formed by an image forming method of the present invention.

FIG. 2 is a perspective view of a developer medium.

FIG. 3 is a perspective view of a heat-sealed sheet.

FIG. 4 is a schematic sectional view of a color image forming apparatus for forming an image on a developer medium.

FIG. 5 is a perspective view of an adhesive sheet.

FIG. 6 is an enlarged sectional view of a screen sheet.

[Explanation of symbols]

 2a Image layer which is a developer layer in this embodiment 2b Support 12 Heat-fusible sheet 12a Sheet base 12b Thermoplastic resin 22b Adhesive layer which is a heat-sensitive adhesive in this embodiment 32 In this embodiment Is an image forming object which is a cloth 42 screen sheet

Claims (2)

(57) [Claims] And 1. A is formed on a support Rutotomoni image section
After the image forming layer composed of the non-image portion and the thermoplastic resin-carrying surface of the heat-fusible sheet in which the thermoplastic resin is carried on the sheet base material are superimposed and bonded by heating and pressing, the support is performed. by peeling off the body, the image on the heat-fusible sheet
The image forming layer is transferred, and a hole is formed in an area of the screen sheet corresponding to only the image area.
Forming a plate, and transferring the image transferred to the heat-fusible sheet.
Stencil formation of the screen sheet on the image area of the image forming layer
After the portions are aligned, the heat-fusible sheet and the image forming body are superimposed and heated and pressed via the screen sheet, and then, the heat-fusible sheet and
An image forming method, comprising: removing the screen sheet from the image forming body. And 2. A heat-fusible sheet and the image-forming member when the heating and pressing are superposed through a screen sheet, the adhesive between the heat-fusible sheet and the screen sheet The image forming method according to claim 1, wherein the image is inserted.