JPH11263079A - Halftone transfer recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a halftone transfer recording medium for regulating a release force at the time of transferring to transfer an image to a material to be transferred without transfer fault while maintaining a transfer efficiency of a transfer layer formed with the image. SOLUTION: In the halftone transfer recording medium 1A comprising at least a base material film 2, a transfer part 12 releasably provided on the film 2 and having two or more layers each having an acceptive layer 5 to be transferred with an image 6 and using the part 12 after the image 6 is transferred for transferring to a material to be transferred; in the case of transferring the part 12 to the material, a releasing force for releasing the part 12 from the film 2 is 10 to 150 gf/inch. Thus, the part 12 having the two or more layers after forming the image 6 on the layer 5 is released from the film 2 by the force of 10 to 150 gf/inch. At the time of transferring to the material, the transfer of the part 12 is facilitated, and a transfer fault such as a tailing, a cutout or the like can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermediate transfer recording medium which is used to form an image by recording an image on a receiving layer and then transferring the receiving layer to a transfer receiving body. The present invention also relates to an intermediate transfer recording medium in which a peeling force at the time of transfer is adjusted in order to transfer a receiving layer on which an image is recorded to a transfer-receiving body without transfer failure.

[0002]

2. Description of the Related Art An intermediate transfer recording medium has been conventionally used for recording an image on a receiving layer and then transferring the receiving layer to a transfer member to form a print. Since an image is recorded on the receiving layer by a thermal transfer recording method using a thermal transfer sheet provided with a color material layer, a high quality image can be formed depending on the constituent material of the receiving layer. In addition, since the receiving layer can have excellent adhesiveness to the transfer object, or the receiving layer can be transferred to the transfer object with good adhesiveness through the adhesive layer, the color material is transferred. It is preferably used for an object to be transferred which is difficult to form a high quality image and an object to be easily fused to a color material layer during thermal transfer.

FIG. 3 is a schematic sectional view of an example of a typical intermediate transfer recording medium. Intermediate transfer recording medium 1
01 is the base film 102 and at least the receiving layer 10
5, and a transfer unit 112 having the same. An image 106 is formed on the receiving layer 105 by thermal transfer using a thermal transfer sheet provided with a color material layer. The transfer portion 112 where the image 106 is formed on the receiving layer 105 is
The film is peeled off from the base film 102 and transferred onto a transfer-receiving body to form a target image 106 on the transfer-receiving body.

The intermediate transfer recording medium 101 is provided with a protective layer 104 and the like to prevent deterioration of the image 106 after being transferred to the transfer object, and to provide the image 106 and the receiving layer 105 with weather resistance and fingerprint resistance. Has been improved. In addition, a release layer 103 is provided so that the receiving layer 105 and other necessary layers can be easily separated from the base film 102. For example, in the intermediate transfer recording medium 101 as shown in FIG. 3, the receiving layer 105 on which the image 106 is formed is the protective layer 1
04 and the release layer 103 are transferred to the transfer target. At this time, the receiving layer 105 and other necessary layers (hereinafter, referred to as “transfer portions 112”) are peeled off at the interface between the peeling layer 103 and the base film 102, and are transferred to the transfer target.

[0005]

The release layer is provided for easily removing the transfer portion from the substrate film and improving the transfer efficiency to the transfer object. Usually, the release layer is made of polymethacrylate, polyacrylate, or the like. Of acrylic skeleton resin. As the release layer is more easily peeled from the base film, the transfer efficiency is improved. Therefore, it is preferable that the release layer adheres to the base film with a minimum necessary adhesive force. On the other hand, if the adhesive force between the release layer and the base film is too weak, there arises a problem that tailing and burrs occur. For this reason, usually, a polyester resin such as polyethylene terephthalate is contained in the release layer, and an adhesive force is applied so that the release layer is appropriately held on the base film.

[0006] In response to various demands in recent years, the intermediate transfer recording medium includes layers such as a protective layer and an ultraviolet absorbing layer.
It has been provided in multiple layers between the receiving layer and the release layer, and the thickness of the transfer portion transferred to the transfer target has become larger than before.

[0007] Such an increase in the thickness of the transfer portion makes it difficult for the transfer portion to be cut cleanly at the boundary between the portion to be transferred and the portion that does not need to be transferred (so-called foil breakage). The transfer part of the portion is partially involved, and causes a transfer failure such as tailing and burrs. Further, during transportation in the printer, the tailing portion and the burr portion fall off, and adhere to products transported thereafter, causing product defects such as dusting.

Accordingly, in order to solve the above-mentioned problems, the present invention provides a method for maintaining the transfer efficiency of a transfer portion on which an image is formed while maintaining the transfer efficiency.
An object of the present invention is to provide an intermediate transfer recording medium in which a force at which a transfer portion is peeled from a base film (hereinafter, referred to as a “peeling force”) is adjusted in order to transfer the image to a transfer target without a transfer failure.

[0009]

The intermediate transfer recording medium according to the present invention comprises at least a base film and a transfer section provided on the base film so as to be releasable. An intermediate transfer recording medium comprising at least two layers having at least a receiving layer and used for transferring the transfer portion after an image is formed to a transfer target, wherein the transfer portion is the transfer target When the transfer portion is peeled off from the substrate film, the peeling force is 1
The above object is achieved by setting the content to 0 to 150 gf / inch.

According to the present invention, the transfer portion after the image is formed on the receiving layer is peeled off from the base film with a peeling force of 10 to 150 gf / inch. Transfer efficiency can be maintained, and transfer can be performed without causing transfer defects such as tailing and chipping.

[0011] The transfer portion has a release layer on the outermost surface on the base film side, and the release layer has an acrylic skeleton resin as a main component, and 100 parts by weight of the acrylic skeleton resin.
It is preferable to contain 3 to 10 parts by weight of a polyester resin.

According to the present invention, the transfer portion is peeled off from the base film with a peeling force of 10 to 150 gf / inch which does not cause transfer failure such as tailing or chipping. Since the transfer mainly occurs between the release layer and the base film, the transfer portion can be transferred to the transfer target without transfer failure.

It is particularly preferable that the transfer portion has a thickness of 3 μm or more. Even if the transfer portion becomes thicker than 3 μm, the transfer portion can be cleanly cut at the boundary between the portion to be transferred and the portion that does not need to be transferred, and transfer can be performed without causing transfer failure or product failure.

Further, it is preferable that a hologram layer is provided in the transfer portion, and that the hologram layer be provided between the receiving layer and the base film.

According to the present invention, a hologram layer often provided when security such as a passport or an identification card, that is, high reliability and security that is difficult to be forged or tampered with, is used as an intermediate transfer recording medium. Since the hologram layer can be provided as a part of the transfer portion, the hologram layer can be transferred to the transfer target requiring security without causing transfer defects such as tailing or chipping, which is particularly preferable.

[0016]

FIG. 1 is a sectional view showing an example of an intermediate transfer recording medium of the present invention. Intermediate transfer recording medium 1A
Is composed of a base film 2 and a transfer section 12 provided on the base film 2 so as to be peelable. Transfer unit 1
2 is composed of two or more layers having at least a receiving layer 5 to which an image is transferred, and a release layer 3 from the base film 2 side;
The protective layer 4, the hologram layer 7, the transparent vapor deposition layer 8, the anchor layer 9, and the receiving layer 5 are laminated in this order. The intermediate transfer recording medium 1 is used to transfer the transfer unit 12 after the image 6 is formed on the transfer target.

When the transfer section 12 is transferred to the transfer object, the peeling force at which the transfer section 12 peels off from the base film 2 is 10
１５０150 gf / inch, preferably 3
It is preferably 0 to 100 gf / inch.

The peeling of the transfer section 12 from the base film 2 usually occurs at the interface between the transfer section 12 and the base film 2, and when the release layer 3 is provided, the release layer 3 Occurs at the interface between the substrate and the base film 2. However, in the case where the release layer 3 is provided, a necessary layer to be transferred, such as the receiving layer 5, may be transferred to the transfer target by causing the release layer 3 to undergo cohesive failure. The peeling force in the present invention refers to one of the force at the time of such peeling, that is, the force generated at the interface between the transfer portion 12 and the base film 2 and the cohesive breaking force of the peeling layer 3. In the following, unless otherwise specified, the description will be made assuming that it occurs at the interface between the transfer unit 12 and the base film 2, that is, at the interface between the release layer 3 and the base film 2. Even in this case, the same action is exhibited.

When the peeling force is less than 10 gf / inch, the transfer portion 12 is easily peeled off from the base film 2, so that the transfer efficiency to the transfer object is good. The transfer portion 12 is hard to cut cleanly (hard to cut foil) at the boundary with the non-existent portion. As a result, a transfer defect such as tailing or burrs is generated with a part of the transfer portion 12 which does not need to be transferred. Further, during transportation in the printer, the tailing portion and the burr portion fall off, and adhere to products transported thereafter, causing defective products such as dust.

When the peeling force exceeds 150 gf / inch, the foil cutting property is improved, but the transfer portion 12 is not easily peeled off from the base film 2 and the transfer efficiency of the transfer portion is deteriorated. A transfer failure such as so-called paper peeling or chipping occurs in which the body is torn and peeled off on the side of the intermediate transfer recording medium 1.

For this reason, the peeling force of the transfer section 12 from the base film 2 is limited to 10 to 150 gf / inch. Accordingly, the transfer portion 12 including at least two layers including the receiving layer 5 can be transferred to the transfer target without deteriorating the transfer efficiency and without causing the above-described transfer failure. it can.

The layers other than the receiving layer 5 provided in the transfer section 12, for example, the release layer 3, the protective layer 4, the hologram layer 7, and the anchor layer 9 are not necessarily essential layers. It is provided by being appropriately selected according to the use and usage mode, and is not particularly limited. However, according to various requirements in recent years, any one of the layers is appropriately provided and the transfer unit 12 is configured as a multilayer. I have. In addition, instead of these layers, or in addition to these layers, a layer having a specific action such as an ultraviolet absorbing layer may be appropriately selected and provided.

As described above, when various layers according to the purpose other than the receiving layer 5 are provided as a part of the transfer portion 12,
The thickness of the transfer unit 12 becomes larger than before. for that reason,
Although the problem of the cutting of the foil of the transfer portion 12 which has not been considered in the past is a problem, as in the present invention, the transfer portion 12 is designed in consideration of the change in the thickness of the transfer portion and the transfer efficiency. The peeling force for peeling from the material film 2 is 10 to 150 gf / in.
Since ch is used, it is possible to transfer the foil with good quality.

The transfer section 12 is usually separated from the base film 2 by a release layer 3 provided on the outermost surface of the transfer section 12 on the base film 2 side as shown in FIG.
And between

The release layer 3 is usually formed of an acrylic skeleton resin. Examples of the acrylic skeleton resin include polymethacrylate, polyacrylate, polyacrylonitrile, and sodium polyacrylate.

It is preferable that the release layer 3 contains a polyester resin in order to adjust the release force of the transfer portion 12 from the base film. The polyester resin can adjust the peeling force between the base film 2 and the release layer 3 and also adjust the cohesive breaking force of the release layer 3.

In order to make the peeling force 10 to 150 gf / inch, it is preferable that 100 parts by weight of the acrylic skeleton resin contain 3 to 10 parts by weight of the polyester resin.

As described above, when the polyester resin is contained in the acrylic skeleton resin, the peeling force between the release layer 3 and the base film 2 can be adjusted.
The peeling force at the time of transfer by the transfer unit 12 can be easily adjusted to the above range.

With respect to 100 parts by weight of the acrylic skeleton resin,
When the content of the polyester resin is less than 3 parts by weight, when a layer other than the receiving layer 5 is provided in multiple layers in the transfer portion 12 and the film thickness is increased, the peel force in the above range is 10 gf / in.
Since the size is smaller than ch, transfer failure may occur. On the other hand, if the content of the polyester resin exceeds 10 parts by weight with respect to 100 parts by weight of the acrylic skeleton resin, the adhesive force between the release layer 3 and the base film 2 becomes too large, and the release force in the above-mentioned range is reduced. When the amount exceeds 150 gf / inch, transfer failure such as so-called paper peeling or chipping occurs. For this reason, the polyester resin is limited to the range of 3 to 10 parts by weight based on 100 parts by weight of the acrylic skeleton resin.

According to the present invention, 3 μm
This is particularly effective when the transfer portion 12 having the increased film thickness is transferred without transfer failure. The relationship between the thickness of the transfer portion 12 and the peeling force has the following relationship.

When the thickness of two or more transfer portions 12 including at least the receiving layer is in the range of 3 to 5 μm, the peeling force of the transfer portion is preferably in the range of 10 to 50 gf / inch. The peeling force is such that the transfer portion 12 having the above-mentioned thickness can be neatly cut into foil. In order to have this peeling force, the polyester resin is used in an amount of 3 to 4 parts by weight based on 100 parts by weight of the acrylic skeleton resin. It is preferable to include a part thereof.

When the thickness of the transfer section 12 is in the range of 5 to 10 μm, the peeling force of the transfer section is preferably in the range of 50 to 100 gf / inch. The peeling force is such that the transfer portion 12 having the above thickness is cleanly cut off the foil.
It is preferable to add 4 to 6 parts by weight of the polyester resin to 00 parts by weight.

The transfer section 12 has a thickness of 10 to 20 μm.
, The peeling force of the transfer portion is 100 to 150 gf /
Inch range is preferred. This peel force is
The peeling force is such that the transfer portion 12 having the above-mentioned thickness can be neatly cut out of the foil. In order to have this peeling force, the polyester resin is coated with 6-1 to 100 parts by weight of the acrylic skeleton resin.
It is preferable to contain 0 parts by weight.

By setting the relationship between the thickness of the transfer portion 12 and the peeling force and the composition for imparting a predetermined peeling force in the above-described range, the transfer portion 12 having a thickness of 3 μm or more and composed of multiple layers is formed. Even if the peeling force is too small, there is no tailing, burrs and foil breakage that occur,
Further, peeling or chipping that occurs when the peeling force is large does not occur.

The release layer 3 is prepared by dissolving or dispersing a predetermined amount of an acrylic skeleton resin and a polyester resin with an appropriate solvent to prepare a release layer coating liquid.
It can be formed by applying and drying on the above by a gravure printing method, a screen printing method, a reverse coating method using a gravure plate, or the like. The thickness after drying is usually 0.1 to 10 μm.

The transfer portion 12 having no release layer 3
Even so, by providing the protective layer 4 with releasability, the above-described appropriate peeling force can be provided between the protective layer 4 and the base film 2. In addition, the protective layer 4
The transfer portion 12 having no base film 2
By imparting a releasable property to a layer opposite to the above, the same action as described above can be provided.

FIG. 2 is a sectional view showing another example of the intermediate transfer recording medium of the present invention. This intermediate transfer recording medium 1B
Is composed of a base film 2, a release layer 13 provided on the base film 2, and a transfer section 12 provided on the release layer 13. The transfer unit 12 is composed of two or more layers having at least the receiving layer 5 to which the image 6 is transferred,
The protective layer 4, the hologram layer 7, the transparent vapor-deposited layer 8, the anchor layer 9, and the receiving layer 5 are laminated in this order from the base film 2 side.

The intermediate transfer recording medium 1B differs from the intermediate transfer recording medium 1A shown in FIG. 1 in that instead of providing the release layer 3 on the outermost surface of the transfer section 12 on the side of the base film 2, the base film 2 A release layer 13 is provided on the outermost surface on the transfer section 12 side.

In this case, the transfer portion 1 from the base film 2
2, the protective layer 4 provided on the outermost surface of the transfer section 12 on the base film 2 side and the release layer provided on the outermost surface of the base film 2 on the transfer section 12 side, as shown in FIG. This is performed between layers 13. The peeling at this time also has the same effect as above,
That is, the transfer portion 12 provided on the base film 2 can be peeled from the interface with the release layer 13 with a peeling force of 10 to 150 gf / inch. Therefore, it is possible to perform transfer without transfer failure such as tailing or chipping.

The release layer 13 is usually formed from a binder resin and a release material. As the binder resin, thermoplastic resins such as polymethyl methacrylate, polyethyl methacrylate, acrylic resins such as polybutyl acrylate, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinyl alcohol, polyvinyl butyral, etc. Vinyl resin, ethyl cellulose, nitrocellulose,
Cellulose derivatives such as cellulose acetate, or unsaturated polyester resins, polyester resins, polyurethane resins, amino alkyd resins, etc., which are thermosetting resins can be used. Further, as the releasing material, waxes, silicone wax, silicone resin, melamine resin, fluorine resin, fine powder of talc or silica, surfactant, lubrication of metal soap and the like can be used.

The above-mentioned peeling force can be adjusted by adjusting the content of the release material in the release layer.

The release layer 13 is prepared by dissolving or dispersing the above resin in an appropriate solvent to prepare a release layer coating liquid, and applying the coating liquid on the base film 2 by gravure printing, screen printing, or gravure printing. It can be formed by applying and drying by means such as a reverse coating method using a plate.
The thickness after drying is usually 0.1 to 10 μm.

Next, each layer constituting the intermediate transfer recording medium of the present invention will be described.

As the base film 2, the same base film as used in the conventional intermediate transfer recording medium can be used as it is, and there is no particular limitation. Specific examples of preferred base film 2 include thin paper such as glassine paper, condenser paper or paraffin paper, or heat-resistant such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyphenylene sulfide, polyether ketone or polyether sulfone. Examples include stretched or unstretched films of plastics such as polyester, polypropylene, polycarbonate, cellulose acetate, polyethylene derivatives, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide, polyimide, polymethylpentene, and ionomer, which have high properties. A composite film in which two or more of these materials are laminated can also be used. The thickness of the base film 2 can be appropriately selected depending on the material so that the strength and heat resistance thereof are appropriate.
Usually, those having a thickness of about 1 to 100 μm are preferably used.

The peeling force between the base film 2 and the transfer portion 12 varies depending on the surface condition. In such a case, the adjustment of the peeling force is usually performed by adjusting the composition and content of the material on the transfer portion 12 side. This is done by adjusting

A back layer can be provided on the surface of the base film 2 opposite to the transfer section 12 side, if necessary, by a conventionally known method. The back layer is used to prevent the base film 2 from being fused with a heating device such as a thermal head when transferring the transfer portion 12 to an object to be transferred using an intermediate transfer recording medium, and to improve slidability. It can be provided by a resin similar to a conventionally used resin.

The receiving layer 5 is provided as a part of the transfer portion 12 constituting the intermediate transfer recording medium so as to be located on the outermost surface on the side opposite to the base film 2 side. An image 6 is transferred onto the receiving layer 5 by a thermal transfer method from a thermal transfer sheet having a color material layer by thermal transfer. Then, the transfer section 1 of the intermediate transfer recording medium 1A, 1B to which the image 6 has been transferred
2 is transferred to a transfer object, and as a result, a print is formed.

For this reason, as a material for forming the receiving layer 5, a conventionally known resin material which easily accepts a coloring material such as a sublimable dye or a hot-melt ink can be used. For example, polyolefin resins such as polypropylene, halogenated resins such as polyvinyl chloride or polyvinylidene chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer or vinyl such as polyacrylate. Resin, polyester resin such as polyethylene terephthalate or polybutylene terephthalate, polystyrene resin, polyamide resin, copolymer resin of olefin such as ethylene or propylene and other vinyl polymer, cellulose resin such as ionomer or cellulose diastase, Polycarbonate and the like can be mentioned, and a vinyl chloride resin, an acryl-styrene resin or a polyester resin is particularly preferable.

In the case where the receiving layer 5 is transferred to an object to be transferred via the adhesive layer, the adhesiveness of the receiving layer 5 itself is not always required. However, when the receiving layer 5 is transferred to the transfer-receiving body without the interposition of the adhesive layer, the receiving layer 5 is formed by using an adhesive resin material such as a vinyl chloride-vinyl acetate copolymer.
Is preferably formed.

The receiving layer 5 is formed by adding one or more materials selected from the above-mentioned materials and various additives as necessary, and dissolving or dispersing in a suitable solvent such as water or an organic solvent. A coating liquid for a layer is prepared, and this is coated with a substrate film 2 by means such as a gravure printing method, a screen printing method or a reverse coating method using a gravure plate.
When the protective layer 4 or the like is provided on the base film 2 or on the base film 2, it can be formed by applying and drying the protective layer 4 or the like. Its thickness is about 1 to 10 μm in a dry state.

The protective layer 4 is provided, if necessary, as a part of the transfer portion 12 and, after being transferred to the transfer object, the receiving layer 5
To maintain the quality of the image 6. As a material for forming the protective layer 4, a conventionally known material for the protective layer can be used, and it is preferable to select a resin composition having desired physical properties, for example, fingerprint resistance, as the surface protective layer. In addition, when scratch resistance, chemical resistance, and stain resistance are particularly required,
An ionizing radiation curable resin can also be used as the resin for the protective layer. Also, a lubricant for improving the scratch resistance of the image-formed product, a surfactant for preventing contamination, a UV absorber for improving weather resistance, and a protective layer material to which an antioxidant and the like are appropriately added are used. The protective layer 4 can also be formed. Further, as described above, when the release layer 3 is not provided, the components of the protective layer are adjusted so that the peeling force of the transfer portion 12 from the base film 2 falls within the above-described range. The adhesion between the substrate film 2 and the substrate film 2 is adjusted.

The protective layer 4 can be formed in the same manner as the release layer 3, and preferably has a thickness of 0.1 to 10 μm.

The hologram layer 7 is provided on the transfer section 1 if necessary.
2, which covers the receiving layer 5 after being transferred to the object to be transferred, so that a print with a hologram pattern can be obtained. The print provided with the hologram pattern has a decorative effect and is preferably used when security is required such as a credit card or a passport because it is difficult to forge by copying or the like. The material for forming the hologram layer 7 can be a conventionally known material, and is not particularly limited. Also, it can be formed by a method similar to the conventional method.

The transparent vapor deposition layer 8 is usually provided on the side of the receiving layer 5 in contact with the hologram layer 7. This transparent evaporation layer 8
Has a different refractive index from the other layers, and thus has the effect of raising the pattern of the hologram in the formed print. The material for forming the transparent vapor-deposited layer 8 may be a conventionally known material, for example, a metal oxide such as ZnS, TiO ₂ , SiO ₂ , Cr ₂ O ₃ , or a sulfide, and is not particularly limited. In addition, it can be formed by a method similar to a conventional method such as a vacuum evaporation method and a sputtering method.

The anchor layer 9 is, for example, as shown in FIG.
It is provided for bonding the hologram layer 7 provided with the transparent vapor deposition layer 8 on the surface thereof to the receiving layer 5. As a material for forming the anchor layer 9, a conventionally known material can be used and is not particularly limited. Also, it can be formed by a method similar to the conventional method.

The ultraviolet absorbing layer may be provided on the transfer portion 12 if necessary.
May be provided at an appropriate position between the receiving layer 5 and the base film 2. This ultraviolet absorbing layer covers the receiving layer 5 after the transfer, and prevents deterioration of the image 6 of the print from the ultraviolet light in natural light. As a material for forming the ultraviolet absorbing layer, a conventionally known material can be used,
There is no particular limitation. Also, it can be formed by a method similar to the conventional method.

Further, in order to transfer the transfer portion 12 of the intermediate transfer recording medium 1A, 1B to a designated position of the transfer receiving body, or to the receiving layer 5 of the transfer portion 12, an image 6 is formed by using a thermal transfer sheet. To transfer without misalignment or color misalignment,
It is preferable to provide a detection mark for positioning on the intermediate transfer recording medium.

The detection mark may have any shape as long as it can be optically recognized. For example, a conventionally known detection mark such as a printed mark having a round shape, a square shape, or a line shape, or a through hole may be provided. The detection mark by printing can be provided on a part or a plurality of locations on one surface of the base film 2 of the intermediate transfer recording media 1A, 1B by a conventionally known printing method or the like. When the detection mark is provided by printing, a conventionally used material can be used as the ink to be used, and there is no particular limitation.

Next, the transfer object will be described. The transfer section 12 of the above-described intermediate transfer recording medium 1A, 1B is transferred onto the transfer object, and as a result, a print is obtained. The transfer object to which the intermediate transfer recording media 1A and 1B of the present invention is applied is not particularly limited. For example, natural fiber paper, coated paper, tracing paper, plastic film that is not deformed by heat during transfer, glass, metal, Any material such as ceramics, wood, and cloth may be used.

Regarding the shape and use of the transfer object, stock certificates,
Securities, certificates, passbooks, boarding tickets, car horse tickets, stamps, stamps, appreciation tickets, admission tickets, vouchers such as tickets, cash cards, credit cards, prepaid cards, members' cards, greeting cards, postcards, business cards, driver's licenses , IC cards, cards such as optical cards, cartons, cases such as containers, bags, forms, envelopes, tags, OHP sheets, slide films, bookmarks, calendars, posters, brochures, menus, passports, POP supplies, Coasters, displays, nameplates, keyboards, cosmetics, watches, lighters and other accessories, stationery, report paper and other stationery, building materials, panels, emblems, keys, cloth, clothing, footwear, radios, televisions, calculators, OA equipment, etc. Equipment, various sample books, albums, and computer graphs The output of the box, medical image output, etc., do not ask type.

Particularly, when a full-color face photograph or other necessary items are transferred to a passport that requires a high-resolution and high-quality image, the intermediate force of the present invention in which the peeling force of the transfer unit 12 is adjusted. The use of the transfer recording media 1A and 1B is preferably used because a printed matter which does not cause transfer failure, has excellent image quality, and does not suffer from missing or peeling of the image can be obtained.

[0062]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The intermediate transfer recording medium of the present invention will be specifically described below.

Example 1 First, a transparent polyethylene terephthalate having a thickness of 12 μm was used as a base film 2, and the following coating solution for a release layer was applied and dried on the surface of the base film 2. 1.5 μm-thick release layer 3 on top
Was formed.

A coating liquid for a release layer; acrylic resin 100 parts by weight polyester resin 5 parts by weight methyl ethyl ketone 100 parts by weight toluene 100 parts by weight

Then, a coating liquid for a hologram layer shown below was applied on the release layer 3 and dried to a thickness of 2.0 μm.
m of the hologram layer 7 was formed.

A hologram layer coating solution; acrylic resin 40 parts by weight melamine resin 10 parts by weight cyclohexane 50 parts by weight methyl ethyl ketone 50 parts by weight

Further, on the hologram layer 7, titanium oxide having a thickness of 500.degree. Is formed as a transparent vapor-deposited layer 8 by vacuum vapor deposition, and a coating liquid for a receiving layer shown below is formed on the transparent vapor-deposited layer 8. Is applied and dried to a thickness of 2.0 μm
Was formed, and the intermediate transfer recording medium of Example 1 was produced. Therefore, the transfer portion 12 of the obtained intermediate transfer recording medium 1A is a laminate of the release layer 3, the hologram layer 7, the transparent vapor-deposited layer 8, and the receiving layer 5, and has a thickness of 5.55 μm.
m.

Coating solution for receiving layer; vinyl chloride-vinyl acetate copolymer 40 parts by weight Acrylic silicone 1.5 parts by weight Methyl ethyl ketone 50 parts by weight Toluene 50 parts by weight

Example 2 The same procedure as in Example 1 was repeated except that the coating solution for the release layer was changed to the one having the following composition, and the thickness was 1.5 μm.
Was formed.

Coating liquid for release layer; Acrylic resin 100 parts by weight Polyester resin 7.5 parts by weight Methyl ethyl ketone 100 parts by weight Toluene 100 parts by weight

Then, on the obtained peeling layer 3, Example 1
The intermediate transfer recording medium of Example 2 was manufactured by forming a hologram layer 7 of 3.0 μm, a titanium oxide vapor-deposited film 8 as a transparent vapor-deposited layer 8 at 500 ° and a receptor layer 5 of 6.0 μm in this order. The thickness of the transfer portion 12 was 10.55 μm.

(Comparative Example 1) The same procedure as in Example 1 was repeated except that the coating solution for the release layer was changed to the one having the following composition, and the thickness was 1.5 μm.
Was formed.

Coating liquid for release layer; acrylic resin 100 parts by weight polyester resin 2.5 parts by weight methyl ethyl ketone 100 parts by weight toluene 100 parts by weight

Next, on the obtained peeling layer 3, Example 1
The hologram layer 7, the titanium oxide vapor-deposited film as the transparent vapor-deposited layer 8, and the receiving layer 5 were sequentially formed in the same thickness as in Example 1 to produce an intermediate transfer recording medium of Comparative Example 1. The thickness of the transfer section 12 was 5.55 μm.

Comparative Example 2 The same procedure as in Example 2 was repeated, except that the coating solution for the release layer was replaced with the one having the following composition, and had a thickness of 1.5 μm.
Was formed.

Coating liquid for release layer; acrylic resin 100 parts by weight polyester resin 5 parts by weight methyl ethyl ketone 100 parts by weight toluene 100 parts by weight

Next, on the obtained peeling layer 3, Example 2
The hologram layer 7, the titanium oxide vapor-deposited film as the transparent vapor-deposited layer 8, and the receiving layer 5 were sequentially formed in the same thickness as in Example 2 to produce an intermediate transfer recording medium of Comparative Example 2. The thickness of the transfer portion 12 was 10.55 μm.

Comparative Example 3 The same procedure as in Example 1 was repeated except that the coating solution for the release layer was changed to the one having the following composition and the thickness was 1.5 μm.
Was formed.

Coating liquid for release layer; 100 parts by weight of acrylic resin 20 parts by weight of polyester resin 100 parts by weight of methyl ethyl ketone 100 parts by weight of toluene

Next, on the obtained peeling layer 3, Example 1
The hologram layer 7, the titanium oxide vapor-deposited film as the transparent vapor-deposited layer 8, and the receiving layer 5 were sequentially formed in the same thickness as in Example 1 to produce an intermediate transfer recording medium of Comparative Example 3. The thickness of the transfer section 12 was 5.55 μm.

(Experiments and Experimental Results) The intermediate transfer recording media obtained in Examples 1 and 2 and Comparative Examples 1 to 3 are shown in FIG.
As shown in (a), a strip-shaped test piece 41 is cut out so as to have a width of 1 inch, and on the receiving layer 5 of the test piece 41,
A test piece 42 made of a hard vinyl chloride sheet having the same size as the test piece 41 was bonded by heating and bonding to form a test piece 40 for a peeling force test.

The measurement of the peeling force (gf / inch) is shown in FIG.
As shown in (b), the test piece 41 and the test piece 42 were peeled off, and the test was performed by detecting the force generated between the base film 2 and the transfer section 12 by a load cell. Table 1 shows the obtained results.

Next, the receiving layer 5 of the intermediate transfer recording medium is
The image 6 is formed by a thermal transfer method using a thermal transfer sheet, and the transfer portion after the image is formed is thermally transferred onto a natural fiber paper as a transfer target, and the presence or absence of tailing, chipping, and paper waste at the time of transfer are determined. Observation was made, and the case where none of these occurred was evaluated as “○”, and the case where any of these occurred was evaluated as “×”. Here, the term “tailing” means that the transfer is performed with a part of the transfer portion 12 that does not need to be transferred because the peeling force is small. Means that the transfer portion 12 cannot be transferred and remains on the base film 2. Paper waste means that the peeling force and the adhesive force between the transfer target and the transfer portion 12 are large, and It refers to a state in which it can be peeled off from the transfer recording medium side.
Table 1 shows the obtained results.

[0084]

[Table 1]

In Examples 1 and 2, a suitable peeling force could be obtained in relation to the thickness of the transfer portion.
The transferability was excellent, and tailing, chipping, and paper scorching did not occur.

In Comparative Example 1, since the amount of polyester was small and the peeling force was small, tailing occurred during transfer.

In Comparative Example 2, since the transfer portion was thick,
Even with the obtained peeling force, the foil was hardly cut and tailing occurred.

In Comparative Example 3, since the amount of polyester was large and the peeling force was large, chipping and paper scuffing occurred.

[0089]

As described above, according to the intermediate transfer recording medium of the present invention, a transfer portion composed of two or more layers having at least a receiving layer on which an image is formed is transferred to a transfer object. At this time, since the peeling force at which the transfer portion is peeled off from the base film is set to 10 to 150 gf / inch, even if the transfer portion has a multilayer structure, tailing and burrs that occur when the peeling force is too small do not occur. Also, paper peeling or chipping that occurs when the peeling force is large does not occur.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of an intermediate transfer recording medium of the present invention.

FIG. 2 is a schematic sectional view showing another example of the intermediate transfer recording medium of the present invention.

FIG. 3 is a schematic sectional view of a configuration of a typical intermediate transfer recording medium.

FIG. 4 is a schematic view showing a peeling force test using the intermediate transfer recording medium of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1A, 1B Intermediate transfer recording medium 2 Base film 3 Release layer 4 Protective layer 5 Reception layer 6 Image 7 Hologram layer 8 Transparent vapor deposition layer 9 Anchor layer 12 Transfer part 13 Release layer 101 Intermediate transfer recording medium 102 Base film 103 Peel Layer 104 Protective layer 105 Receiving layer 112 Transfer part

Claims (4)

[Claims] Claims: 1. An image forming apparatus comprising: at least a base film; and a transfer portion provided on the base film so as to be releasable, wherein the transfer portion is composed of two or more layers having at least a receiving layer to which an image is transferred. In the intermediate transfer recording medium used for transferring the transfer portion after an image is formed to a transfer target, the transfer portion is transferred to the base when the transfer portion is transferred to the transfer target. Peeling force from the material film is 10 to 1
An intermediate transfer recording medium characterized by having a weight of 50 gf / inch. 2. The transfer section has a release layer on the outermost surface on the side of the base film, the release layer being mainly composed of an acrylic skeleton resin, and a polyester resin based on 100 parts by weight of the acrylic skeleton resin. 3. The intermediate transfer recording medium according to claim 1, wherein the intermediate transfer recording medium contains 3 to 10 parts by weight. 3. The intermediate transfer recording medium according to claim 2, wherein the transfer portion has a thickness of 3 μm or more. 4. The hologram layer is provided in the transfer section, and the hologram layer is located between the receiving layer and the base film. The intermediate transfer recording medium according to the above.