JPS5835533A - Diazo type copying material - Google Patents

Abstract

PURPOSE:To obtain a large number of copy images at low cost in an easy process, by using a diazo type heat transferring master capable of forming a subimable dye image. CONSTITUTION:A heat transferring layer consists of 10-80wt% diazo compd., such as 4-diazo-1-dimethylaminobenzene; 10-80wt% coupling component, such as resorcinol; 10-60wt% hot melt material, such as lauramide, palmitohydrazide, or polyethyleneglycol monostearate; and further, heat transfer accelerator, binder, pigment, antioxidant, etc., and this layer is formed on a support. An original is overlaid on this heat transferring layer and exposed to light. This is developed to form a sublimable dye image, and this master is heated with a heating drum or the like to transfer the dye image to a transfer sheet of paper, resin film, or the like attached to the master.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel diazo type copying method.
Specifically, the present invention relates to a diazo type copying method in which a large number of copy images are thermally transferred onto a transfer sheet using a diazo type thermal transfer master capable of forming a sublimable dye image by exposure and development.

Conventionally, a copying method is known in which a sublimable dye image is formed on a transfer master by electrophotography or discharge destruction method, and the resulting image is transferred as a master to a transfer sheet to obtain a large number of copied images. ing.

However, this method requires complicated hardware, and the density and resolution of the obtained copy images are low, and these characteristics deteriorate with the number of copies, so it is necessary to transfer many copy images from one master dye image. I couldn't do that.

The present invention solves these shortcomings, and in particular:
This is a copying method that uses a diazo type transfer master capable of forming sublimable dye images as a master material to obtain a large number of high-quality copy images at low cost through a simple process.

That is, in the present invention, a diazo type thermal transfer master, which has a thermal transfer layer containing a diazo compound, a coupling component, and a thermally fusible material provided on a support, is overlapped with an original, exposed, and then developed to create a sublimable dye image. This is a diazo type copying method in which a large number of clear copy images are obtained from the same master dye image by forming the image and thermally transferring the image to a transfer sheet while heating it with a heat generating medium.

To explain the present invention in more detail, as the support used in the diazo type transfer master, any support that is generally used in diazo type copying materials such as paper, Zorasti, Quailm, etc. can be used.

Furthermore, as the diazo compound and the coupling component, any of the conventionally known diazo type copying materials capable of causing a coupling reaction to form a sublimable dye can be used alone or in combination. The following are exemplified.

Diazo compounds: 4-diazo-1-dimethylaminebenzene, 4-diazo-1-diethyl-aminobenzene, 4-diazo-1-dipropylaminobenzene, 4-diazo-1-methylbenzenedylaminobenzene, 4-noacyl -dibennolaminobenzene, °4-diazo-1-ethylhydroxy7ethylaminobenzene, 4-diazo-1-diethylamino-3-methoxybenzene, 4-diazo-1-tume;
Ruamino-2-methylbenzene, 4-diazo-1-benzoylamino-2,5-jethoxybenzene, 4-noacyl-morpholinobenzene, 4-diazo-1-morpholino-2゜5-jethoxybenzene, 4- Diazo-1-
Morpholino-2,5-dibutoxybenzene, 4-noacyl-anilino-benzene, 4-diazo-1-dimethylamino-3-cal? xybenzene, 4-diazo-1-tolylmercapto-2,5-jethoxybenzene, 4-
Diazo-1,4-methoxybaeylamino-2,5
Examples include double salts of chlorides such as -jethoxybenzene with zinc chloride, cadmium chloride, tin chloride, tetrafluoroboric acid, sulfuric acid, or hexafluorophosphoric acid.

Coupling components niresorcin, phloroglucin, 2.5-trimethyl-4-
Morpholinomethylphenol, 3-hydroxycyanoacetanilide, nosolasulfoacetanilide, 1-benzoylamino-8-hydroxynaphthalene-3,6-disulfonamide, 2,2-dihydroxynaphthalene, 2
, 7-dihydroxynaphthalene-3,6-disulfonic acid sodium, 2,3-dihydroxy-6-sulfonic acid sodium, 2,5-dihydroxynaphthalene-6-sulfonic acid 7
-/, 1-hydroxynaphthalene-4-sulfonic acid sodium, 1-amino-3-hydroxynaphthalene-3,6-
Disulfonamide, Naphthol As, Su7thol As
-D, 2-hydroxynaphthalene-3-biguanide,
2-hydroxynaphthoic acid morpholinozolopyramide,
2-hydroxynaphthoic acid ethanolamide, 2-hydroxynaphthoic acid-N-dimethylaminopropylamide hydrochloride, 2,4.2',4'-tetrahydroxynophenyl, 2,4.2',4'-tetrahydroxydiphenyl Examples include sulfoxide.

Heat-melting materials include undecanoic acid, lauric acid, tridecanoic acid, myristic acid, kantadecanoic acid, tsucurmitic acid, margaric acid, stearic acid, nonadecanoic acid,
Arachic acid, behenic acid, lignoceric acid, cerotic acid,
Saturated or unsaturated with 10 or more carbon atoms, such as lindelic acid, lauroleic acid, tuzunic acid, myristoleic acid, seamarinic acid, tetrateroceric acid, oleic acid, elaidic acid, linoleic acid, eleostearic acid, liluic acid, parinaric acid, etc. Fatty acid amides, imides, amides, esters, fatty acid salts,
and fatty acid derivatives such as fatty acid amide-formaldehyde condensates, and these may be used in combination.

A specific example is shown below.

Amides: Lauric acid amide, myristic acid amide, palmitic acid amide, stearic acid amide, arachinic acid amide, behenic acid amide, ethylene bisstearic acid amide, ethylene bis/? Rumitic acid amide.

Hydrazide: Palmitic acid hydrazide, stearic acid hydrazide.

p-oxyanilide: myristic acid-p-oxyanilide, stearic acid-p
-Oxanilide.

β-noethylaminoethyl ester hydrochloride, nilauric acid β-diethylaminoethyl ester hydrochloride, stearic acid β-diethylaminoethyl ester hydrochloride.

Fatty acid salts nistearic acid subsalt, aluminum stearate, magnesium stearate, calcium stearate, potassium oleate.

Fatty acid amide-formaldehyde condensate, nistearic acid amide-formaldehyde condensate, tsucurmitic acid amide formaldehyde, metal condensate, mixed fatty acid amide (stearic acid amide:) and lumitonic acid amide = 7:3) -
Formahide reduced metal.

Furthermore, a polyalkylene oxide or a polyalkylene oxide derivative that is solid at room temperature is used, and the polyalkylene oxide may be a homopolymer, a pro-copolymer, or a graft copolymer. As a specific example,
Examples include polyethylene oxide, polypropylene oxide, polyethylene oxide-polyzolopylene oxide-silicone copolymer, and polyethylene oxide-polypropylene oxide-graft copolymer. In addition, as polyalkylene oxide derivatives, various cartenoic acids,
Alcohol matter is phenol, amine or amide,
Among the addition reactants with alkylene oxide, those which are solid in normal state are selectively used, and specific examples thereof include the following.

I-lyethylene glycol stearate mono- or di-ester, polyzolopylene glycol stearate mono- or di-
ester.

Stearyl polyethylene glycol - mono or di-ether, Stearyl I-propylene glycol - mono or di-ether, t-butylphenyl polyethylene glycol - mono or di-ether
'1t-)-ether.

Addition polymer of trihydric or higher alcohol such as sorbitol, glycerin, penstrite, etc. and ethylene oxide or zolopyrene oxide.

Ethylene oxide or propylene oxide adducts to oleylamine or stearylamine, ethylene oxide adducts of aniline. 1
tIJJ amino compound or polyethyleneimine, an adduct of other polyamines and ethylene oxide or propylene oxide. Adducts of ethylene oxide or propylene oxide to lauric acid amide, stearic acid amide or oleic acid amide.

In addition, adducts of amide resins, lactams, etc. with ethylene oxide or zolopyrene oxide. These polyalkylene oxides or polyalkylene oxide derivatives can be used alone or in combination of two or more.

In addition to the above ingredients, in order to increase thermal transfer efficiency, sublimable solid organic compounds such as naphthalene or its derivatives; turpentines such as camphor, menthol, and caffeine; and halogenated benzenes such as p-dichlorobenzene are used as thermal transfer accelerators. Further, for the purpose of bonding the thermal transfer layer onto the support, the cal can be used as oxymethyl cellulose,
Hydroxyethyl cellulose, polyvinyl alcohol,
In addition to water-soluble resins such as vinyl pyrrolide, thermoplastic resin binders such as vinyl acetate resin, vinyl chloride resin, vinylidene chloride resin, styrene resin, acrylic resin, and cellulose resin, pigments used in ordinary diazo type copying materials, Acid stabilizer additives may also be used.

The binding rate of each of the above components in the thermal transfer layer is as follows: Diazo compound: 10-80wtqb Coupling component: 10-80wt Cured heat-fusible material
10~60wt thermal transfer accelerator
0-20 wt% binder 5-30
Preferably, the amount of wtqb pigment is 0 to 50 wt, and the thiic acid stabilizer is 5 to 30 wt%, and the number of copies can be controlled by changing the amount of the thermal transfer layer made of these.

To form an image on the above diazo type thermal transfer master,
A stone that forms a sublimable dye image by placing an original on the thermal transfer layer of the master, exposing and developing it using a general diazo copying machine.

Development may be carried out either dry or wet. The master on which the sublimable dye image has been formed in this way is heated by contacting with an appropriate heating medium, and the dye image is transferred to the paper.
Heat transfer onto a transfer sheet such as synthetic paper, resin film cloth, etc.

For example, when using a heat drum as the heating medium,
What is necessary is to wrap the master around the drum and heat it. Further, the transfer sheet may be a processed sheet provided with an adhesive layer, a matte layer, an antistatic layer, etc. on the surface.

Examples of the present invention will be shown below.

Example 2.7-Sihydroxyna 7-talene 20 Citric acid 10 Stearic acid
p-oxyanilide 10 Silica (Cyrod 24
4 Fuji Davison, Ni,) 3/1 Hydroxymethylcellulose 10/1 Water
170 After dispersing the above composition in a sol mill for 5 hours, it was applied and dried on a polyester film provided with an adhesive layer, and the amount of adhesion when dried was 10
? /m2 of the thermal transfer layer was formed to create a diazo type thermal transfer master of the present invention.

The original was placed on the thermal transfer layer of the diazo thermal transfer master obtained in this way, and then
00 (manufactured by Ricoh) to form a mirror image, and then transfer the image-formed letter master to a heat via'.
It was wrapped around the outer surface of a heat drum in which a halogen lamp was installed, heated to 70 to 90°C, and while rotating the heat drum, images were thermally transferred onto high-quality paper to obtain 20 continuous copies of images. As a result, the first transferred sawtooth image was a blue image with a reflection density of 1.20, while the 20th copy image had a reflection density lower by only 0.05. There was also very little deterioration in copy quality.

Large patent application Sutomi Co., Ltd. First generation Hayato Patent attorney Hidetake Komatsu

Claims (1)

[Claims] A diazo-type thermal transfer master, which has a thermal transfer layer containing a diazo compound, a coupling component, and a heat-fusible material on a support, is layered with the original, exposed to light, and then developed to form a sublimable dye image. A diazo type copying method characterized in that the image is thermally transferred onto a transfer sheet while being heated with a heating medium.