JPS59224844A - Heat transferred image receiving element - Google Patents

Abstract

PURPOSE:To improve color reproducibility and to obtain high max. density while controlling occurrence of fog by incorporating a specified polymer in an image receiving layer contg. a tone controller in a heat-transferred image receiving element. CONSTITUTION:A homopolymer of vinyl chloride or a copolymer of it and another monomer, including a graft polymer, can be used irrespective of polymn. degree, so long as it contains >=50mol% vinyl chloride monomer units. Said element of such a composition can be applied to both of dye releasing type or dye forming type thermodevelopable photosensitive elements. Since PVC of the principal component of the image receiving layer has proper polarity, the element has excellent aptitude to heat transfer and dyeing of an azomethine or indocyanine dye formed by coupling with the oxidized product of a color developing agent.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an image-receiving element that is placed in a stacked relationship with a heat-developable photosensitive element at least during thermal transfer, the image receiving element being contained in a photographic constituent layer of the photosensitive element. The present invention relates to an image-receiving element to which a thermal transfer dye released or formed by thermal development from a thermal-transferable dye-providing material is thermally transferred, or an image-receiving element for thermal transfer.

Specifically, the present invention relates to an image receiving element for thermal transfer that is capable of obtaining a sufficiently high maximum density while suppressing the occurrence of fogging, and has excellent brown color reproducibility.

[Prior art]

Using conventionally known photosensitive silver halide -1-A
.

The color photographic method used in this paper is superior to other color photographic methods in terms of photosensitivity, gradation, image preservation, etc., and has been most widely put into practical use. However, in this method, wet processing is used for steps such as development, bleaching, fixing, and water washing, which takes time and effort, and there are concerns that the processing chemicals may cause pollution to the human body, or the processing room and There are concerns about contamination of workers by treatment chemicals, and there are many problems with C, Sara, and K, such as the effort and cost of waste liquid treatment.

Therefore, there has been a demand for the development of a method for forming color images that allows dry processing.

Heat-developable black-and-white photosensitive materials, characterized in that the development process is carried out by heat treatment, have been known for a long time.
No. 4921 and No. 43-4924 disclose a photosensitive material comprising an organic acid silver salt, silver halide, and a developer. Furthermore, there are many (known) heat-developable color photosensitive materials to which this heat-developable black-and-white photosensitive material is applied.

For example, U.S. Pat. No. 3,531,286, U.S. Pat.
- No. 1.270, No. 3,764,328, Research Disclosure No. 15108, No. 15127, No. 12044, and Na 16479, etc. are heat-developable photosensitive materials containing photographic couplers and color developing agents. Regarding U.S. Pat. No. 3,180,731, Research Disc. Y-No. 13443 and Na 14347, etc., U.S. Pat. Roger N (L14433, Nα14448,
Same No. 15227, same No. 15776, same No. 181
37 and No. 19419, etc., U.S. Pat. No. 4,124,398,
No. 4,124,387 and No. 4,123,273 each describe a method for thermally bleaching photothermographic materials.

However, with these proposals regarding heat-developable color photosensitive materials, it is difficult or impossible to bleach or fix the simultaneously formed black, white, and silver images, or even if possible, wet processing is required. That is. Therefore, these proposals are not found to be desirable, as it is difficult to obtain clear color images, and complicated post-processing is required.

On the other hand, a heat-developable color photosensitive material for obtaining a color image by transferring a diffusible dye released by heat development was developed in JP-A-57-
No. 179840, No. 57-186744, No. 57-1
No. 98458, No. 57-207250, No. 58-40
No. 551 and Japanese Patent Application No. 58-58543, and also in Japanese Patent Application No. 57-122596 and Japanese Patent Application No. 57-229649 filed by the present inventors.

In these proposals, a dye-providing substance having a diffusible dye in the same molecule releases the diffusible dye through a heat development reaction of an organic silver salt, and transfers it to an image-receiving layer to obtain a color image. In this specification, this is referred to as a "dye-releasing type."

On the other hand, patent application No. 57-229671 by the present inventors
The proposal shown in the specification of No. 58-33364 is as follows:
A colorless or light-colored dye-donor substance reacts with an oxidized product of a color-developing crude drug produced by a heat development reaction of an organic silver salt to form a heat-diffusible dye, which is transferred to an image-receiving layer to obtain a color image. In this specification, this type is referred to as a "pigment-forming type."

However, in both the dye-releasing type and the dye-forming type, fog occurs when trying to obtain a sufficiently high maximum density, and when fog is suppressed, only a low maximum density can be obtained, which is still insufficient for practical use. It is.

On the other hand, when obtaining a color image by the subtractive color method, the three primary colors are yellow+i+, magenta, and cyan. Among these, yellow is a complementary color to blue, and is required to be clear yellow and have a maximum absorption wavelength of 420 to 480 nm. Furthermore, magenta is a complementary color to green, and is required to be a clear reddish-purple color with a maximum absorption wavelength of 520 to 580 nm. Cyan is a complementary color to red, and is a clear blue-green color with a maximum absorption wavelength of 620-72
It is required that the thickness be 0 nm. In order to obtain color images with excellent color reproducibility using the subtractive color method, the maximum absorption wavelength must be moved to the yellow, magenta, and cyan regions (many (
Although attempts have been made to design the structure of dye molecules, this process requires complicated steps, is difficult under conditions, and has problems in terms of yield. Furthermore, when color reproducibility is attempted to be achieved by improving dyestuffs, a problem arises in that it becomes difficult to obtain a high maximum density.

Therefore, a sufficiently high maximum density can be obtained while suppressing the occurrence of fog, and excellent brown color reproducibility can be achieved.Development power of thermal transfer technology 1
desired.

As a result of continuing research on such technical issues, the inventors of the present invention have found that in both the dye-releasing type and the dye-forming type, color images can be obtained by thermal diffusion and transfer and dyeing to the image-receiving layer. It was discovered that the characteristics of the image-receiving element greatly influence the quality of the resulting color image.Also, it is possible to achieve excellent nine-color reproducibility by improving the image-receiving element. I found out something.

However, in the conventional techniques related to dye-releasing or dye-forming heat-developable color photographic materials, most of the methods for suppressing fog and obtaining high-density color images are based on improvements in photosensitive elements containing dye-providing substances. In particular, as far as the present inventors are aware, there are no documents that mention improving color reproducibility by improving image-receiving elements.

That is, for example, in the above-mentioned Japanese Patent Application Laid-Open No. 57-207250, a so-called support-cum-image-receiving element method was proposed, in which the support of a heat-developable color photographic material can receive an image of a dye. By using a support made of a dye-receiving organic polymer material, it is possible to form a clear image in which only the dye penetrates into the support. However, there is no mention of technology for obtaining excellent color reproducibility.The publication also mentions, as an example of a dye-receptive organic polymer material, a material with a glass transition temperature of 40°C. A wide range of heat-resistant organic polymeric substances are listed from ℃ to 250℃, and particularly useful supports include cellulose acetate films such as triacetate and diacetate, heptamethylene diamine and terephthalic acid, and fluorocarbon. Polyamide films made from combinations of propylamine and 7-dipic acid, hexamethylene diamine and diphenic acid, hexamethylene diamine and isophthalic acid, etc., polyesters made from combinations of diethylene glycol and diphenylcarboxylic acid, bis-p-carboxyphenoxybutane and ethylene glycol, etc. film, polyethylene terephthalate film, and polycarbonate film.

However, even with these specific examples listed as particularly useful supports, it is difficult to obtain high-density color images and/or achieve good color reproducibility while suppressing the occurrence of capri. The present inventors learned this as a result of various experiments.

[Purpose of the invention]

Therefore, the purpose of the present invention is to provide a thermal transfer device that can obtain excellent color reproducibility, which will require a solution in practical use, and which can obtain a high maximum density while suppressing the occurrence of fogging. The purpose is to provide an image receiving element.

[Summary of the invention]

In order to achieve the above object, the inventors of the present invention continued their intensive research and found an image-receiving element for thermal transfer having an image-receiving layer containing a tone adjusting agent, characterized in that the image-receiving layer contains a vinyl chloride polymer. It has been found that this objective can be achieved by a thermal transfer image receiving element.

[Structure of the invention]

The present invention will be explained in detail below.

The color tone adjusting agent used in the present invention is brought into contact with and mixed (including mutual dispersion) with the dye provided and thermally transferred by the heat-transferable dye-providing substance contained in the heat-developable photosensitive element.
Or, by dissolving the dye, it moves the maximum absorption wavelength of the dye and/or changes the absorption waveform. In the present invention, a dye that moves by 2 nm or more, preferably 5 nm or more, more preferably lonm or more, particularly cyan dye, is moved by 20 nm or more with respect to the thick absorption wavelength of the dye when dyed on a vinyl chloride polymer. (or extremely thick absorption of the dye -9-^^I) Although no shift in wavelength is observed, a change in the absorption waveform may be observed.The shift in the maximum absorption wavelength is toward the short wavelength side. It may be a movement to the long wavelength side or a movement to the long wavelength side, but movement to the long wavelength side is preferable.

Color MPJ adjusting agents preferably used in the present invention include compounds with phenolic hydroxyl groups (for example, phenols, kanafurs, naphthols), higher alcohols, phosphoric acid amides, phosphoric esters, phenolic resins, etc. It will be done. These compounds may be added to the image-receiving layer alone or in combination of two or more.

Specific examples of phosphoric acid amides suitable for use as the color tone adjusting agent of the present invention are as follows.

(p-1) 110- (P-2) (P-3) (P-4) (P-5) (P-6) These compounds are 1annarene def hemi-(A
volume 326,
It is synthesized by the method shown on pages 177-302. Also, Belgian Patent No. 891,205
The phosphoric acid amide compounds shown in this issue are also useful.

The compound having a phenolic hydroxyl group, which is an example of the color tone adjusting agent used in the present invention, refers to phenols, catechols, resorcinols, etc., and for example, US Pat.
, 835,579, 4.124° 396, and British Patent Nos. 1,001,947 and 1,076.054 are useful. A specific example is shown below.

(F-1) (F-2) (F-3) (F-4) (F-5) (F-6) (F-7) (F-s) =12- (F-9) H ( F-1o) a 4H9(n) (F-11) (F-12) (F-13) (F-14) HO (F 15) (P-16) (F-17) (F-18) ( F-1,9) (F-20) The phenolic resins advantageously used in the present invention include phenols (phenol, catechol, ethylphenol, t
-butylphenol, cyclohexylphenol, resorcinol, cresol, xylenol, 1-octylcresol, resorcinol, pyrogallol, t-7milcresol) and aldehydes (formaldehyde, acetaldehyde, acrolein, crotonaldehyde,
It is a resin obtained by condensing furfural, paraformaldehyde, etc.) with an acid or an alkali. When condensed using an acid, a novolak type resin is obtained,
This can be further hardened by adding an excess of formaldehyde, paraformaldehyde, hexamethylenetetramine, etc. When condensation is carried out using an alkali, resol, resitol,
Becomes legit. Phenol resin can also be dissolved in a solvent such as alcohol or drying oil to form a festival.

Furthermore, the phenol resin advantageously used in the present invention is a phenol resin condensed with one or more types of phenols and one or more types of aldehydes, and may be a mixture of two or more different types of phenol resins, or a mixture of two or more different types of phenol resins. It may also be a product obtained by further condensing two or more types of phenol resins.

Regarding phenolic resin, "phenolic resin"
(Nikkan Kogyo Shimbun, Plastic Materials Course), etc.
JP 54-123035, JP 55-105254, JP 55-105380, JP 55-153948,
They are described in Japanese Patent Publication No. 55-161250, Japanese Patent Publication No. 56-20543, etc., and all of these can be used in the present invention.

Next, specific examples of phenolic resins that are effective in the present invention are shown below. However, t, m, and n indicate the polymerization molar ratio.

(Exemplary phenolic resin) (1) OH OH3-0-OH3 OH3 (3) 18-051-11° (5) OH 6H13 (6) 11 17 (9) n 5 m 150 04) OH 0 0H0H OH0H (171 0HOH nki 3 mki 17 (to) QI ”ki 5
250HOH nki 7 in m 20nki 5 in m (a)
m main 15 n ki 3 gradient
20 (c) in m ”:3
-20OHQ) (OH3 (E) OH200011,,rn20 (1) 26- OH0H (7) OH0H CH3n-:10 m::2
0) OH OH3 I4su OH OHOH nki 5 mki 15θ 埠■ OH0H CH2CH2COOH nki 5 m in 25) ni) HOH 28- (a) HOH ring 0f-I 61) HOH working HOH 30- HQ)l (Foundation) H01-1) HQl (ki) 1 0H 31- HOH (to) HOH Ring HOH Ring HOH 32- H0H 16 place 1-I Ql ( Ring HOH 輔HOH HOHHOH The degree of polymerization of these phenolic resins is 2 ~10.000
, preferably 3 to 1. , OOO.

In the Vlip of the present invention, the amount of the color tone adjusting agent added is not limited, but in the case of a phosphoric acid amide compound or a phenol compound, the weight ratio is 0.1% to vinyl chloride polymer.
The weight ratio is 100%, preferably 0.5% to 50%, and in the case of phenolic resins, the weight ratio is 0.1% to 200%, preferably 0.5% to 150%.

The support used in the present invention is preferably a material whose expansion/contraction rate when heated at 150° C. for 30 seconds is within ±5%. The test method for the expansion/contraction rate of the support is as follows.

An electric iron type heat book with a smooth bottom (square shape) measuring 15C3'n in both length and width and weighing 1 kg was placed at 150.
℃, and heated at 25℃ by placing the heat pull for 30 seconds on a square support (test piece) of 10 m in length and width placed on a flat table. (referred to as "constant heating"). The constant heated support is left at a temperature of 25° C. for 10 minutes, and the support according to the present invention has length and width both within ±5% of the initial length and width of 10 cm. This is a preferably used support. In other words, if the support, which had a length and width of 1oan, is heat-shrinked in the measurement after being heated to the above-mentioned constant level and left to stand, the heat shrinkage rate is within 5%, that is, 9.5 in both the length and width. Cm or more, and on the other hand,
In the case of hot stretching, the support preferably has a hot stretching ratio of 5% or less, that is, 10.5 crrI or less in both length and width.

Specific examples of supports preferably used in the present invention include:
For example, paper, photographic baryta paper, i-poly paper, capacitor paper, polycarbonate film, polyether sulfone film, polyimide film, cellulose ester film, acetyl cellulose film, polyvinyl 7
Setal film, ++4 polyethylene terephthalate film (preferably polyethylene terephthalate film with crystallinity of 40% or more) can be mentioned. As a specific example of the support used in the present invention, in addition to having a thermal expansion/contraction ratio within the above-mentioned range, the support has flexibility so that it can be used in a wide range of thermal transfer devices. This is preferable because it can also be suitably used in thermal transfer devices. However, 1-1 The use of the image receiving element of the present invention is not limited to use in such a specific thermal transfer device, so in addition to the above specific examples, glass, metal, or ceramic may be used as a support, This does not preclude the use of heat-resistant organic polymeric substances or inorganic substances that are thick and have no or poor flexibility.

Furthermore, the image-receiving element of the present invention can be formed by using the image-receiving layer of the present invention as a support by employing techniques such as making the image-receiving layer itself thick or using a polymer blend or the like to bring the thermal expansion/contraction rate of the image-receiving layer within the above range. Can be used for both purposes. In other words, it is possible to use a support-cum-image-receiving element system.

Note that there is no particular limitation on the thickness of the support used in the present invention, but for example, the thickness of the support is 40% so that it can be suitably used in a thermal transfer device of a reversal path conveyance/heating type.
When using a film such as the above polyethylene terephthalate film, 5 μm to 500 μm 1 preferably 15
It is μm to 300 μm.

The image-receiving layer of the image-receiving element of the present invention comprises a vinyl chloride polymer. Melting the vinyl chloride polymer used in the present invention, vinyl chloride is irradiated with light or alpha rays, or in the presence of a free radical polymerization catalyst such as peroxide, by suspension polymerization method, bulk type 4 method, emulsion polymerization method, It is a polymer obtained by homogeneous solution polymerization method, precipitation solution polymerization method, etc. The polymer of the present invention may be polyvinyl chloride, which is a homopolymer of vinyl chloride, or if it contains 50 moles (X or more) of vinyl chloride, other monomers such as vinyl acetate, vinyl propionate,
Alkyl esters of unsaturated fatty acids such as vinyl palmate and vinyl tallow, acrylic acid, methacrylic acid, methyl acrylate, ethyl methacrylate, butyl acrylate, 2-hydroxyethyl methacrylate, 2-acrylic acid - Acrylic acid or methacrylic acid and its alkyl esters such as ethylhexyl, maleic acid,
Diethyl maleate, dibutyl maleate, dioctyl maleate f, (any maleic acid and its alkyl esters, alkyl vinyl ethers such as methyl vinyl ether, 2-ethylhexyl vinyl ether, lauryl vinyl ether, palmityl vinyl ether, stearyl vinyl ether, etc.) Polymers such as vinylidene chloride, ethylene, nolopyrene, acrylyl-lyl, methacrylonitrile, styrene, polypropylene styrene, itaconic acid and its alkyl esters, crotonic acid and its alkyl esters, dichloroethylene, trifluoroethylene, etc. Copolymers (including graft copolymers may also be used) with p-genated olefins, cycloolefins such as cyclopentene, adipic acid esters, vinyl benzoate, benzoyl vinyl ether, etc. The polymerization degree of the vinyl chloride polymer is Although it is standardized in the range of 275 to 2,460 in TIS K6721, in the present invention, both homopolymers and copolymers can be used regardless of the degree of polymerization.

The image-receiving layer of the present invention may contain various additives (for example, a plasticizer is preferably added to impart plasticity. As a plasticizer, phthalate esters (for example, dimethyl phthalate, dibutyl phthalate, dioctyl phthalate, didecyl phthalate, etc.), adipate esters (
dioctyl adipate, methyl lauryl adipate, di-2-ethylhexyl adipate, ethyl lauryl adipate, etc.), other oleic acid esters, succinic acid esters, maleic acid esters, sepatic acid esters, citric acid esters, epoxy Stearic acid esters, further include phosphoric acid esters such as triphenyl phosphate and tricresyl phosphate, and glycol esters such as ethyl phthalyl ethyl glycolate and butylphthalyl butyl glycolate. In the thermal transfer image-receiving element of the present invention, the addition of a plasticizer not only imparts plasticity but also contributes to improving dye transfer efficiency and light resistance of transferred images. The amount of plasticizer added varies depending on the type of plasticizer, but it is usually 0% by weight relative to the vinyl chloride polymer.
．． 1% to 50%, preferably 0.5% to 45%.

A stabilizer is preferably added to the image-receiving layer of the present invention in order to prevent decomposition and modification of the vinyl chloride polymer due to dehydrochlorination. Stabilizers include metal soaps (e.g. stearates of lead, zinc, barium, calcium, etc.), organic tin compounds (e.g. dibutyltin diisooctyl maleate, dibutyltin dilaurate, dibutyltin nonylthioglycolate, digtyltin). lauryl mercaptide, dioctyltin maleate, etc.).

Mixing, so-called polymer blends, may also be carried out. Reinforcing agents that increase physical strength include chlorinated polyethylene, ethylene-vinyl acetate copolymer, polybutadiene, neoprene, inbutylene polymer, isoprene polymer, methyl methacrylate-1-butadiene styrene copolymer, acrylic nitrile-butadiene.・Styrene polymer, acrylonitrile φ butadiene polymer, styrene butadiene copolymer, etc. 1
be. In order to improve heat resistance, polymers containing α-methylstyrene, vinylcarbazole, and acenaphthylene are effective. It is small and has excellent dimensional stability. Furthermore, a polymer having excellent dye retention properties such as polyvinylpyrrolidone, polyvinyl butyral, and saturated polyester may be added to the image-receiving layer of the present invention.

These other polymers are used in up to 50% by volume of the image receiving layer.

A lubricant (slip agent) may be added to the image-receiving layer of the present invention in order to increase manufacturing and processing efficiency and improve quality, and to peel off the image-receiving layer and the photosensitive element or photosensitive layer after transfer. It is valid. Examples of lubricants include hydrocarbons such as liquid paraffin and low-molecular polyethylene, aliphatic alcohols such as stearyl alcohol and cetyl alcohol, aliphatic ketones such as stearone and palmitone, and fatty acids such as stearic acid, valmitic acid, and lauric acid. ,
Fatty acid amides such as stearic acid amide, oleic acid amide, and methylenestearobisamide, waxes such as cetyl valmitate, polyalcohol esters such as diethylene glycol monooleate, and chlorinated naphthalene, chlorinated diphenyl, fluororesin, These include silicone oil, silicone resin, and finely divided silicic anhydride.

The image-receiving layer of the present invention preferably contains an antistatic agent. Usual anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants are used.

In addition to the above, antioxidants, ultraviolet absorbers, dyes, pigments, etc. can also be added to the image receiving element for thermal transfer of the present invention.

The method of manufacturing the image receiving element of the present invention is arbitrary. For example, it can be prepared by coating or laminating an image-receiving layer containing a tone adjusting agent and a vinyl chloride polymer onto a suitable support. In addition, a coating liquid constituting a backing layer having a thermal expansion/contraction rate within ±5% may be coated on the vinyl chloride polymer film or sheet containing a color tone adjusting agent constituting the image-receiving layer of the present invention, or by vapor deposition. You may also adopt a method such as However, in view of cost, the coating method and the laminating method are advantageous, and the vinyl chloride polymer containing the color tone adjusting agent constituting the image-receiving layer of the present invention or the coating liquid containing the polymer as a main component is coated on the support. For coating, a solution using tetrahydrofuran, methyl ethyl ketone, toluene, xylene, chloroform, dioxane, acetone, etc. is used as a solvent, a vinyl chloride polymer is prepared by emulsion polymerization, and preferably an aqueous dispersion is used. There is. Generally used methods can be used to coat the substrate, such as dip method, immersion method, roller method, river 11 roll method, air knife method, doctor grade method, spray method, extrusion method, Examples include the bead method, stretch-two method, and curtain method.

On the other hand, in order to laminate a vinyl chloride polymer containing a color tone adjusting agent or a film or sheet containing the polymer as a main component onto the support, the previously formed film or sheet is laminated with the support and heat-sealed. A laminating method is used, such as a high-frequency welding method, an ultrasonic welding method, or a high-frequency welding method. The amount of the image-receiving layer containing the color tone adjusting agent and the vinyl chloride polymer to be coated or laminated on the support is 11/i to 500 t/m'', preferably 5 t/m' to 300 y1rrr.

In the thermal transfer image-receiving element of the present invention, in order to view a reflected image, a white pigment may be added to the support, or a white reflective layer may be provided on or in place of the support. Examples of white pigments include titanium white, magnesium carbonate, zinc oxide, barium sulfate, silica, talc, clay, and calcium carbonate. Further, in order to provide a light-shielding effect to the photosensitive layer, a black pigment may be added to the support, or a light-shielding layer may be provided on the support or in place of the support. Examples of black pigments include carbon black, manganese dioxide, and graphite.

As described above, the image-receiving element of the present invention may have one or more photographic constituent layers other than the image-receiving layer of the present invention.

The relationship between the image receiving element of the present invention and the photosensitive element layer used in combination with the image receiving element may be in any conventionally known form (e.g., (1) thermal development (2) The image-receiving element of the present invention is placed in a stacked relationship during thermal transfer after thermal development with respect to the photographic constituent layers of the photosensitive element. and (3) the image-receiving element of the present invention is integrally provided on the photographic constituent layer of the photosensitive element, and imagewise exposure and thermal development are performed through the image-receiving element. The image-receiving element of the present invention may be of a type in which the image-receiving element of the present invention is subjected to a peeling force t after thermal transfer, and the image-receiving element of the present invention is not peeled off after thermal transfer. It can be any format.

In the present invention, thermal transfer means that the dye is sublimated, vaporized, evaporated, melted, or dissolved by a solvent by heat, and is diffused and transferred.

The image-receiving element for thermal transfer of the present invention can be applied to either the dye-releasing type or dye-forming type heat-developable photosensitive element. Therefore, it shows excellent suitability for thermal transfer and dyeing of azomethine dyes or indoaniline dyes formed by coupling with oxidized products of color developing agents.

Preferred examples of such dyes include the aforementioned Japanese Patent Application Nos. 57-229671 and 58-33363 filed by the present inventors,
It is shown in the specification of No. 58-33364.

For the thermal transfer image-receiving element of the present invention, thermal transfer is performed when the photothermographic element is thermally developed or when it is reheated after thermal development. For heating the thermal transfer chamber, all methods applicable to ordinary heat-developable photographic materials can be used. For example, contact with a heated block or plate, contact with a heated plate or drum, passage through a high temperature atmosphere, use of high frequency heating, and furthermore, It is also possible to provide a conductive layer in the image receiving element for thermal transfer of the present invention and utilize Joule heat generated by electricity or a strong magnetic field. There are no particular restrictions on the heating pattern, including methods of preheating (breheating) and then reheating; Although discontinuous heating is also possible, a simple pattern is preferable.The heating temperature during transfer is usually 80°C to 200°C, preferably 80°C to 160°C.
The heating time is usually 1 second to 1 minute, preferably 1 second to 1 minute.
The range is 40 seconds.

For thermal transfer using the image receiving element for thermal transfer of the present invention, it is also possible to use a commercially available thermal developing machine. For example, °°
Image forming model 4634 (Sony Tektronix), 1 developer module 277” (3
Company M), 6 Video Hard Copy Units) NWZ-301
” (Japan Radio Co., Ltd.), etc.

It can also be used as an image receiving element. In other words, the patent application in 1982
-217063, 57-217796, 57-
No. 217797, No. 57-229651 and JP-A-51
-15446, 54-68253, 57-16
It can be used as an image receiving element for thermal transfer used in a thermal transfer recording medium or a thermal transfer recording method described in No. 0691 and the like. That is, for example, when an ink sheet for thermal transfer and the image-receiving element of the present invention are superimposed, the dye transferred onto the image-receiving element of the present invention is transferred to the image-receiving element in response to thermal information from a thermal head, a laser, a xenon lamp, etc. It exhibits a desirable color tone when brought into contact with, mixed with, or dissolved in the color tone adjusting agent of the present invention contained therein. The general art regarding heat sensitive elements is well known and the image receiving element of the present invention may be used in combination with any of these types of heat sensitive elements.

〔Example〕

The invention will now be illustrated by examples.

Example-1 I, 46r on a 100 μm thick transparent polyethylene terephthalate film with gelatin subbing of 2t/,j
/A water-soluble polyvinyl butyral (degree of polymerization 650, average molecular weight 33,000, degree of butyralization 9 mo1%, degree of acetylation 12 mo1%) and Eslec W-201
(manufactured by Mikki Kagaku) is provided, and each of the following pigments 8 are dispersed in the layer by alumina ball mill dispersion.
．． OX 10-''mol/r11' was contained.

A transparent polyethylene terephthalate film with a thickness of 100 μm is superimposed thereon as an image-receiving layer, and polyvinyl chloride (n=1,100. Wako Tsumugi Yakuhin) is placed on a transparent polyethylene terephthalate film with a thickness of 100 μm.
A mixed solution of 140% 10% tetrahydrofuran solution and 35mQ 10% methanol solution of the phenol resin style (6) was coated to a wet film thickness of 120 μm, dried and layered, respectively. The maximum absorption wavelength (λmaxEA) of each azomethine dye in an ethyl acetate solution, and the maximum absorption wavelength when thermally transfer dyed onto polyethylene terephthalate film. (λmaxPET), and the thickest absorption wavelength (λmax PVO) when the polyvinyl chloride containing phenol resin of the present invention is thermally transfer dyed to a thermal transfer image receiving element coated on a polyethylene terephthalate film (λmax PVO) is shown in the table below.
Shown in 1.

(Dye) -1 H2O2-N-C2H5 -1 H3 -2 -3 -4 Margin table below-1 (Unit: nm) The density at each maximum absorption wavelength when thermally transferred to polyethylene terephthalate film is approximately 02 to 07. In the case of the thermal transfer image-receiving element of the present invention, approximately 1
, 0 to 1.5, not only can a high-density image be obtained, but also the color tone can be shifted to a preferable region.

Example-2 When the same operation was carried out using the phosphoric acid amide compound (p-1) s and 2r instead of 35 mQ of 10% methanol solution of the phenolic resin Naθbori in Example-1, the maximum of the dye The absorption wavelength is 432 nm for Y-1 and M-1
was 542 nm, and O-1 was 630 nm.

Example-3 Phosphoric acid amide compound (P-1) in Example-25.
Instead of 2, the phenol compound (F-15) 4
．． When the same operation was performed using 8f, the thickest absorption wavelength of the dye was 430 nm for Y-1.

M-1 was 544 nm, and 0-1 was 643 nm.

Example-4 4-sulfobenzotriazole fA 7.45 S'
24 mQ of 8% aqueous solution of iCx Slec W-201, 71.3 f of Osei 7 gelatin, 10 mQ of water, and 25 mA of methanol were added and dispersed in an alumina ball mill to obtain a silver salt dispersion.

25ml of this silver salt dispersion! to 0.211F of phthalic acid, 70.16f of phthalate, 0.4Or of the following compound X-1,
The following developing agent Dev-1 was mixed with 0.42f, 1.3-dimethylurea 1.81 and water-soluble polyvinyl alcohol (
105, manufactured by Kuraray) 8% aqueous solution 5mQ, water 10ml,
Furthermore, 36+1 g of silver iodide emulsion with an average grain size of 0.0.4 μm was added, and the mixture was coated onto photographic baryta paper using a wire bar to a wet film thickness of 55 μm, thereby forming a photosensitive layer. I got it.

The dried sample of the photothermographic element was exposed to 30.0000 MS through a step wedge.

On the other hand, the thermal transfer image receiving element of the present invention has a thickness of 100 μm.
Polyvinyl chloride (
A mixture of 1.40 mQ of a 10% tetrahydrofuran solution (Altron, Mitsubishi Monsando) and 3 smQ of a 10% methanol solution of the aforementioned phenol 1M fat No. 2) was coated to a wet film thickness of 120 μm.

The exposed sample and the image receiving element for thermal transfer were placed one on top of the other, pressed and heated with an iron having a surface temperature of 1.60° C. for 30 seconds, and then quickly peeled off.

A step wedge negative image with a maximum transmission density of 173, a minimum transmission density of 0.08, and a maximum absorption wavelength of 667 nm was obtained on the surface of the image receiving element for thermal transfer.

(X-1) H I N [(C!001(016H33 (Dev -1)) The thermal shrinkage rate of the image receiving element for thermal transfer at this time was 1.4%.
Met.

Example-5 A photosensitive element sample was prepared in the same manner as in Example-4, but
Thick sheet coated with acrylic 57-acid ester polymer latex instead of photographic baryta paper]
O08m transparent polyimide film (KAPTON
.

(manufactured by DuPont) was used as a support.

On the other hand, as an image receiving element for thermal transfer, a transparent polyethylene terephthalate film having a thickness of 508 m, a crystallinity of 53.8%, and a density of 1.397 was used as Example-4! : The same mixed solution was applied to form an image-receiving layer, and then a white reflective layer having the following composition was provided thereon.

<White reflective layer> (unit 1/rtl'
) The heat-developable photoreceptor and the image-receiving element for thermal transfer are superimposed and fixed, and from the polyimide film support side, there is no step difference.
．． 30, OOOOMS through 15 step wedges
The film was exposed to light for 30 seconds and heated for 30 seconds using an iron with a surface temperature of 160°C.

The maximum reflection density on the polyethylene terephthalate film side is 1. , 58 A negative image of a step wedge with a minimum reflection density of 0.05 and a maximum absorption wavelength of 667 nm was obtained.

Note that the thermal shrinkage rate of the image receiving element for thermal transfer at this time was 1 (X or less).

Comparative Example 1 An experiment similar to Example 4 was conducted, except that polyethylene, polypropylene, cellulose acetate, ethyl cellulose, or nylon was used instead of polyvinyl chloride for the image receiving layer of the image receiving element. As a result, in the case of [N-group], homogeneous mixing with phenols could not be achieved. On the other hand, in the case of group (8), each phenol could be mixed, but the concentration was not high enough.

Patent applicant: Konishiroku Photo Industry Co., Ltd., agent patent attorney
Nobuaki Sakaguchi (and 1 other person) 59-

Claims (1)

[Claims] 1. An image-receiving element for thermal transfer having an image-receiving layer containing a tone adjusting agent, characterized in that the image-receiving layer contains a vinyl chloride polymer.