JPS5976295A - Photosensitive and heat sensitive type transfer material - Google Patents

Abstract

PURPOSE:To obtain a photosensitive and heat sensitive type transfer material capable of being transferred to an arbitrary image receiving sheet such as plain paper, by providing a photosensitive and heat sensitive layer containing specific substance on a support. CONSTITUTION:A photosensitive and heat sensitive layer containing thermoplastic substance, light-heat convertible substance for converting light to heat and photocrosslinkable photosensitive substance generating crosslinking reaction by light absorption is provided on a support such as a plastic film. According to necessity, various dyes or pigments as colorants, various plasticizers each for imparting proper hardness and flexibility, a binder or the like can be added to the photosensitive and heat sensitive layer. When transfer is performed by using this transfer material, photocrosslinking is generated because the photocrosslinkable photosensitive substance is contained and a transfer image improved in heat resistance is formed on an image receiving sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a light- and heat-sensitive transfer material that can be transferred to any image-receiving notebook such as plain paper.

According to Japanese Patent Publication No. 56-43819, a transfer plate for heat-sensitive recording is known in which a solid ink made of an ionomer resin, an adhesive agent, etc. is applied onto a film.

However, in this case, the ink image transferred onto the image-receiving notebook is heat-meltable and has poor heat resistance, so it has the disadvantage that it will be transferred to other objects if it is overlapped during storage. ing.

The present inventor has completed the present invention as a result of extensive research in order to overcome such drawbacks in the prior art.

That is, according to the present invention, on a support, a thermofusible substance;
The transfer side of the present invention combines a photothermal converting material that converts light into heat and a photocrosslinkable photosensitive material that absorbs light and undergoes a crosslinking reaction. In addition, since it has photosensitivity (photocrosslinkability), a heat-resistant transferred image can be obtained.

When obtaining a transferred image using the transfer and lateral diagonal of the present invention, the following two methods can be adopted.

(1) Transfer recording using a conventional method using a strong A-Lugie line that emits both light (ultraviolet to visible range) and heat (infrared).
By doing so, a photocrosslinking reaction occurs simultaneously with the transfer, and the heat resistance of the transferred image is improved.

(2) As with conventional thermal transfer side diagonal, first, transfer recording is performed using a thermal head or infrared laser, and then the entire surface of the resulting transferred image is irradiated with light to cause a photocrosslinking reaction, resulting in a change in the transferred image. Improves heat resistance.

The transfer material of the present invention has a structure in which a photosensitive and thermosensitive layer containing a thermofusible substance, a photothermal convertible substance, and a photocrosslinkable photosensitive substance is provided on a support. In this case, a commonly used support can be used, and although not particularly limited, plastic films are generally preferred, such as polyethylene, polypropylene, etc. -+5 recarbonate, polystyrene.

, Ip Polyethylene terephthalate, nylon, and other films are used.

The thermofusible substance is one that melts when heated, and usually has a score of 40 to 150C, preferably 50 to 100C.
A range of t: is adopted. As a specific example,
For example, in addition to long-chain aliphatic alcohols, ketones, carpentanic acids, amides, etc., nomurafin, cyclonomirafine, polyethylene, polystyrene, polyamide, polyvinyl chloride, butyral resin, polyvinyl ether, polyethylene oxide, Examples of photothermal converting substances include acrylonitrile, 4-lyacrylic acid ester, coumaron indene resin, petroleum resin, etc. Photothermal converting substances absorb light such as X-rays, ultraviolet rays, visible light, infrared rays, and white light and convert it into heat. Any substance that can be obtained can be used, for example, No1-Zembranok, Cardin Graphite 1-, Phthalo/Anine-based Ganzuki, Iron powder, Graphite powder, Iron oxide powder, Lead oxide, Silver blackide, Examples include chromium oxide, iron sulfide, and chromium sulfide.

The photocrosslinkable photosensitive substance may be any substance that absorbs light and undergoes a crosslinking reaction, such as diazonium salts, and compounds, polymers with an azide group in the molecule, and 7-namoyl groups in the molecule. Has; 1? It is known that Rimmer et al. Diazonium salts include paraformaldehyde condensates of p-diazonophenylamine, p-
-quinone di-r2F, p-iminoquinone diazide, etc. Azide compounds include I]-phenylenebisazide, p-azibenzophenone, 4,4'-dianodossozophenone, 4,4'-noacydiphenylmethane, 4
, 4'-noacytostilbene, 4,4'-diazidochalcone, 2,6-di(4'-azidobenzal)cyclohexanone, 2,6-di(4'-azidobenzal)-4
-Methylcyclohexanone, ■-azidopyrene, 4,4
'-Diazidostilbene-2,2'-sodium disulfonate, 1.5-27diIS naphthalene-3,7-disulfonic acid sodium, etc.These azide compounds include those that are soluble in organic solvents. and water-soluble ones, and organic solvent-soluble ones usually include natural rubber, synthetic rubber,
It is used by mixing with cyclized rubber, Nojirak resin, etc., while water-soluble ones are usually polyvinyl alcohol, polyvinylpyrrolidoso, diacetone acrylamide, methyl cellulose, vinyl alcohol-preic acid copolymer, vinyl alcohol acrylamide. It is used in combination with copolymers, water-soluble polyvinyl butyral, etc. Examples of polymers having an azide group in the molecule include polyazidovinyl benzoate and boriavinyl dophthalate. Examples include IP IJ vinyl benzal acetal. It has a cisonamoyl group in its molecule. I solimer is polyvinyl cinnamate;
cinnamylidene monoacid ester derivatives of polyvinyl alcohol, such as polyvinyl cinnamylidene acetate,
Examples include polyvinyl sonamate cinnamylidene acetate, polyvinyl sonamate cinnamylidene acetate, polyvinyl sonamate cinnamylidene acetate, and polyvinyl acetate cinnamylidene acetate. In addition to the above, as the photocrosslinkable photosensitive substance, a mixed system of a monomer, oligomer or polymer having an ethylenically unsaturated bond and a photopolymerization initiator can be used. Specific examples of monomers, oligomers or polymers of this type include acrylic acid, methacrylic acid, methyl methacrylate, 2-ethyl quinolac IJ v -1-1
Examples include 2-hydroquine ethyl methacrylate, ethylene glycol acrylate, intererythritol triacrylate, trimethylolpro-ξ-trinotacrylate, oligomers thereof, or polymers thereof. Usual photopolymerization initiators include benzoin, benzoin methyl ether, benzophenone,
Michler's ketone, thioxanthone, anthraquinone sulfonate, and the like.

The ratio of the thermofusible substance, the photothermal convertible substance, and the photocrosslinkable photosensitive substance in the photothermosensitive layer is 1:O1 to
: o, about t~10 is appropriate. In addition to the above-mentioned components, the photosensitive and thermosensitive layer may contain various dyes or pigments as coloring agents, various plasticizers, binders, etc. to impart appropriate hardness and flexibility, as required.

In order to make the light- and heat-sensitive transfer material of the present invention, for example, a thermofusible substance, a photothermal conversion substance, a photocrosslinkable photosensitive substance, and if necessary, a dye, a binder, a plasticizer, etc. are mixed, stirred, and ultrasonicated. After uniform dispersion by dispersion or the like, the resulting dispersion is coated and dried to a dry thickness of 1 to 50 μm, preferably 1 to 15 μm, to form a product.

To perform transfer recording using the photo- and heat-sensitive transfer material of the present invention, an image-receiving notebook, such as paper, other notebook, film, etc., is brought into close contact with the photo- and heat-sensitive layer of the transfer material, and the image is transferred from the front or back surface of the notebook. All you have to do is irradiate it with strong energy rays. In this case, image-like light irradiation can be achieved by irradiating light through a negative film or by scanning exposure according to the image. Light sources for strong energy rays include mercury lamps, fluorescent lamps, arc lamps, xenon lamps,
halogen lamp, tungsten lamp, infrared lamp,
There are various types of flat lamps, lasers, etc., but flash lamps and lasers have a light emission time of approximately 1/l O0 seconds or less and provide sufficient energy.

When transferring using the transfer material of the present invention as described in NIJ, the light-sensitive and heat-sensitive layer provided on the support absorbs the light possessed by the photothermal converting substance contained therein and converts it into heat. It is heated and melted by the action of converting it into , and the melt is transferred onto the image-receiving notebook. In the case of the present invention, the melt contains a photocrosslinkable photosensitive substance;
Photocrosslinking (photocuring) occurs, and the transferred image on the image-receiving notebook has improved heat resistance.

Next, the present invention will be explained in more detail with reference to Examples.

Example l Car + IF bracket 20 parts water
A mixture consisting of 10 parts is ultrasonically dispersed, and 2
It was coated on a polyethylene terephthalate film with a thickness of 5 μm so that the weight after drying was about 5 g/m 2 and dried to provide a photosensitive and heat sensitive layer.

Next, plain paper was brought into close contact with the light and heat sensitive layer of the light and heat sensitive transfer material obtained in this way, and scanning exposure was carried out according to the image with UV argon laser light of output IW from the support (film) side of the light and heat sensitive transfer material. When the post-photosensitive heat-sensitive transfer material was removed, a clear black transferred image was recorded on the plain paper.

Example 2 Plain paper was brought into close contact with the photosensitive and heat-sensitive layer of the photo- and heat-sensitive transfer material of Example 1, and a lithium film having an I/G image was superimposed on the support side of the photo- and heat-sensitive transfer material, and from this lith-film side After Canon flash exposure (1/1000 seconds), the light and heat sensitive transfer material was removed, and a clear black positive transfer image was recorded on the plain paper.

It was confirmed that the transferred image obtained in Example 1.2 did not transfer to other objects and maintained a clear image even during storage.

Example 3 Carbon black 1 part Cellulose acetate butyrate o, s
A mixture of 40 parts of methylcellulose was dispersed for 1 hour in a Zeel mill, and
It was coated onto a thick polyethylene terephthalate film so that the weight after drying was about 4 g/m2, and dried to form a photosensitive and heat sensitive layer.

Next, a transferred image was created on plain paper using the light- and heat-sensitive transfer material thus obtained in the same manner as in Example 1, and a clear image was obtained with no image transfer during storage.

Example 4 The dispersion of Example 3 was coated on 80 μ thick synthetic paper (YUPO F P-80 manufactured by Tamago Yuka Synthetic Paper Co., Ltd.) so that the weight after drying was approximately 4 g/m.
2 and dried to provide a photosensitive and heat sensitive layer.

Next, a 75μ thick polyethylene terephthalate film (Q-76 easily adhesive film manufactured by Toshi Co., Ltd.) was adhered to the photosensitive and thermosensitive layer of the photosensitive and thermosensitive transfer material thus obtained.
IWU from this polyethylene terephthalate film side
After scanning exposure according to the image with V argon laser light,
When the light and heat sensitive transfer material was removed, a film with a clear black image was obtained.

Furthermore, when this film was used as a manuscript and copied onto diazo photosensitive paper using a diazo copying machine (Tacopy 5M 1500 stock manufactured by Ricoh), a clear copy was obtained without the transferred image sticking to the glass cylinder of the light source of the copying machine. .

Patent applicant Ricoh Co., Ltd. Agent Patent Attorney Toshiaki Ikeura

Claims (1)

[Claims] (1) On a support, a thermofusible substance, a photothermal converting substance that converts light into heat, and a crosslinking substance that absorbs light and undergoes a crosslinking reaction.