JPH04338592A - Thermal transfer dye donating material - Google Patents

Abstract

PURPOSE:To enhance thermal transfer capacity by forming a dye donating layer containing a thermal transfer dye represented by a specific general formula on a support. CONSTITUTION:The thermal transfer dye contained in the thermal transfer dye-donating layer formed on a support is composed of a compound represented by the formula I [wherein Q is an atomic group (excepting quinonemonoimide and naphthoquinonemonoimide structures) necessary for that the compound I has absorption in a visible region and/or a near infrared region, R<1> is a hydrogen atom or a non-metal substituent, R<2> and R<3> are respectively independently selected from a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group and may be mutually bonded to form a ring structure].

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal transfer dye-providing material using a thermally transferable dye.

0002

BACKGROUND OF THE INVENTION At present, thermal transfer methods, electrophotographic methods, ink jet methods, and the like are being actively studied as technologies related to color hard copies. The thermal transfer method has many advantages over other methods because the equipment is easy to maintain and operate, and the equipment and consumables are inexpensive. Thermal transfer methods include a method in which a thermal transfer material in which a heat-melting ink layer is formed on a base film is heated by a thermal head to melt the ink and recorded on a thermal transfer image-receiving material, and a method in which a heat-transferable dye is formed on a base film. There is a method in which a thermal transfer dye-providing material containing a coloring material layer is heated by a thermal head to thermally transfer the dye onto a thermal transfer image-receiving material. By changing the amount, the amount of dye transferred can be changed, which facilitates gradation recording, which is particularly advantageous for high-quality full-color recording. However, there are various restrictions on the heat-transferable dyes used in this method, and there are very few that satisfy all the required performances. Required performances include, for example, having favorable spectral characteristics for color reproduction, being easily transferable to heat, being resistant to light and heat, being resistant to various chemicals, being resistant to loss of sharpness, and having good image quality. It is difficult to retransfer, and it is easy to make a thermal transfer dye-providing material.

Azomethine dyes are excellent as thermal transfer dyes, and are disclosed in Japanese Patent Application Laid-open Nos. 1591-1981 and 1-1
No. 76591, No. 1-176589, No. 1-1765
No. 90 discloses yellow dyes. Also, JP-A-64-48862, JP-A-64-48863, JP-A-64-
63194, JP 2-178088, JP 2-17
No. 5190, 2-208094, 2-265791
No. 2-310087, No. 3-7386, No. 3-
No. 51188, No. 1-176592, etc. disclose pyrazoloazole azomethine dyes and azomethine dyes similar thereto. In addition, imidazole azomethine dyes are disclosed in Japanese Patent Application Laid-Open No. 2-155693, International Patent WO 91/
No. 01890. In addition, dissociated azomethine dyes are disclosed in JP-A-3-92386 and JP-A-3-83688.
No. 3-90387, No. 3-92385, Hei 3-
No. 93862. In addition, infrared absorbing dyes are disclosed in JP-A Nos. 3-81193, 3-81192, and 3-
No. 81194. Other azomethine dyes include JP-A No. 2-84391, JP-A No. 2-67187,
2-172792, 2-172793, 3-
It is disclosed in No. 16792 and No. 3-17163. Further, JP-A-3-93862 discloses an azomethine dye derived from thiazole.

0004

[Problems to be Solved by the Invention] However, conventionally known azomethine dyes do not satisfy all of the performances required as thermal transfer dyes. Therefore, there has been a strong desire to develop a new dye that satisfies the required performance.

[0005]

OBJECTS OF THE INVENTION An object of the present invention is to provide a thermal transfer dye-providing material using a new dye that fully satisfies the performance required as a thermal transfer dye.

[0006]

SUMMARY OF THE INVENTION The objects of the present invention have been achieved by the thermal transfer dye-providing material described below.

[0007]

[Case 2]

In formula (I), Q represents an atomic group necessary for the compound of formula (I) to have absorption in the visible region and/or near infrared region (excluding quinone monoimide and naphthoquinone monoimide). ), R1
each independently represents a hydrogen atom or a nonmetallic substituent, R2 and R3 each independently represent a hydrogen atom,
Represents an alkyl group, an aryl group, or a heterocyclic group. R2
and R3 may be bonded to each other to form a ring structure.

General formula (I) will be described in detail below.

R1 each independently represents a hydrogen atom or a nonmetallic substituent, and among them, a hydrogen atom, an alkyl group, a halogen atom, an allyl group, a heterocyclic group,
and hydroxyl groups are preferred.

Specific examples include hydrogen atoms, alkyl groups (including those with substituents, having 1 to 30 carbon atoms, such as methyl, ethyl, isopropyl, butyl, methoxyethyl, cyclohexyl, phenethyl, dodecyl), halogen atoms (such as , fluorine, chlorine, bromine), aryl groups (including those with substituents; for example, phenyl, p-tolyl,
p-methoxyphenyl, p-chlorophenyl), heterocyclic groups (having 3 to 20 carbon atoms; for example, 2-furyl, 2-thienyl, 2-pyridyl, 3-pyridyl), and hydroxy groups.

R2 and R3 each independently represent a hydrogen atom, an alkyl group (including those having a substituent, and have 1 to 1 carbon atoms)
30, such as methyl, ethyl, isopropyl, butyl,
Cyclopentyl, cyclohexyl, 2-methoxyethyl, 2-chloroethyl, 2-hydroxyethyl, 2-cyanoethyl, cyanomethyl, 2-methylsulfamoylethyl, 2-methylsulfonylaminoethyl, 2-methoxycarbonylethyl, 2-acetoxyethyl, methoxycarbonylmethyl, benzyl, allyl), aryl group (
Including those with substituents. 6 to 30 carbon atoms, such as phenyl, p-tolyl, m-chlorophenyl) or heterocyclic groups (including those with substituents; 4 to 30 carbon atoms,
For example, a group represented by the following chemical formula 3, a group represented by the following chemical formula 4
represents a group represented by

[0013]

[Chemical formula 3]

[0014]

[C4]

[0015] Examples of the ring formed by combining R2 and R3 include a group represented by the following chemical formula 5.

[0016]

[C5]

Among R2 and R3, preferred is an alkyl group having 1 to 30 carbon atoms.

Q is the compound of formula (I) in the visible range and/or
Or it represents an atomic group necessary to have absorption in the near-infrared region. A preferred structure represented by Q is a structure represented by the following formula (II).

[0019]

[C6]

[0020]R4
each independently represents a hydrogen atom or a nonmetallic substituent, among which hydrogen atom, alkyl group, alkoxy group, aryloxy group, halogen atom, acylamino group, alkoxycarbonyl group, cyano group, alkoxycarbonylamino group, aryloxycarbonylamino group, aminocarbonylamino group, sulfonylamino group, carbamoyl group, sulfamoyl group, aryl group,
Alkylthio group, arylthio group, sulfonyl group, acyl group, amino heterocyclic group,

and hydroxyl groups are preferred.

Specific examples include hydrogen atoms, alkyl groups (including those with substituents, having 1 to 30 carbon atoms, such as methyl, ethyl, isopropyl, butyl, methoxyethyl,
cyclohexyl, phenethyl, dodecyl), alkoxy groups (including those with substituents, 1 to 30 carbon atoms, e.g. methoxy, ethoxy, isoproboxy, methoxyethoxy), aryloxy groups (including those with substituents, 6 carbon atoms) ~30, e.g. phenoxy, p-methoxyphenoxy, p-chlorophenoxy, p-methylphenoxy), halogen atoms (e.g. fluorine, chlorine, bromine),
Acylamino group [alkylcarbonylamino group having 1 to 30 carbon atoms (including those with substituents; for example, formylamino, acetylamino, propionylamino, isobutylamino, hexahydrobenzoylamino, pivaloylamino, trifluoroacetylamino, heptafluorobutylamino) Lylamino, chloropropionylamino, cyanoacetylamino, phenoxyacetylamino,
), carbon number 3-3
0 vinylcarbonylamino groups (including those with substituents, e.g., acryloylamino, methacryloylamino, crotonoylamino), arylcarbonylamino groups having 7 to 30 carbon atoms (including those with substituents, e.g., benzoylamino) , p-tolylamino, pentafluorobenzoylamino, o-fluorobenzoylamino, m-methoxybenzoylamino, p-trifluoromethylbenzoylamino, 2,4-dichlorobenzoylamino, p-methoxycarbonylbenzoylamino, 1
-naphthoylamino), heterylcarbonylamino groups having 5 to 30 carbon atoms (including those with substituents; for example, picolinoylamino, nicotinoylamino, pyrrole-2
-carbonylamino, thiophene-2-carbonylamino, furoylamino, piperidine-4-carbonylamino)], cyano group, alkoxycarbonyl group (including those with substituents, carbon number 2-30, e.g. methoxycarbonyl, ethoxycarbonyl) , alkoxycarbonylamino group (including those with substituents) having 2 to 3 carbon atoms
0, such as methoxycarbonylamino, ethoxycarbonylamino, isopropoxycarbonylamino, methoxyethoxycarbonylamino, N-methylmethoxycarbonylamino, t-butoxycarbonylamino, hexyloxycarbonylamino), aryloxycarbonylamino groups (with substituents) Contains 7 to 3 carbon atoms.
0, e.g. phenoxycarbonylamino, ortho-chlorophenoxycarbonylamino), aminocarbonylamino group (including those with substituents, carbon number 1-30,
For example, methylaminocarbonylamino, dimethylaminocarbonylamino, butylaminocarbonylamino),
Sulfonylamino group (C1-C30, methanesulfonylamino, ethanesulfonylamino, N-methylmethanesulfonylamino, phenylsulfonylamino), carbamoyl group [C1-C30 alkylcarbamoyl group (including those with substituents) For example, methylcarbamoyl, dimethylcarbamoyl, butylcarbamoyl, isopropylcarbamoyl, t-butylcarbamoyl, cyclopentylcarbamoyl, cyclohexylcarbamoyl, allylcarbamoyl, methoxyethylcarbamoyl,
chloroethylcarbamoyl, cyanoethylcarbamoyl, ethylcyanoethylcarbamoyl, benzylcarbamoyl, ethoxycarbonylmethylcarbamoyl, furfurylcarbamoyl, tetrahydrofurfurylcarbamoyl, phenoxymethylcarbamoyl), carbon number 7-30
Arylcarbamoyl groups (including those with substituents; for example, phenylcarbamoyl, p-tolylcarbamoyl, m-methoxyphenylcarbamoyl, 4,5-dichlorophenylcarbamoyl, p-cyanophenylcarbamoyl, p-acetylaminophenylcarbamoyl,
p-methoxycarbonylphenylcarbamoyl, m-trifluoromethylphenylcarbamoyl, o-fluorophenylcarbamoyl, 1-naphthylcarbamoyl),
Heterylcarbamoyl group having 4 to 30 carbon atoms (including those with substituents; for example, 2-pyridylcarbamoyl,
3-pyridylcarbamoyl, 4-pyridylcarbamoyl, 2-thiazolylcarbamoyl, 2-benzthiazolylcarbamoyl, 2-benzimidazolylcarbamoyl,
2-(4-methyl)pyridylcarbamoyl, 2-(5-
methyl)1,3,4-thiadiazolylcarbamoyl)]
, sulfamoyl group (carbon 0-30, e.g. methylsulfamoyl, dimethylsulfamoyl, butylsulfamoyl, phenylsulfamoyl), aryl group (including those with substituents, e.g. phenyl, p-tolyl, p-methoxyphenyl, p-chlorophenyl), alkylthio groups (including those with substituents, e.g., methylthio, butylthio), arylthio groups (including those with substituents, e.g., phenylthio, p-tolylthio), sulfonyl groups (e.g. methanesulfonyl, butanesulfonyl, benzenesulfonyl), acyl groups (e.g. acetyl, butyroyl), amino groups (e.g. methylamino, dimethylamino, anilino), heterocyclic groups (3 to 20 carbon atoms, e.g. 2-furyl) , 2-thienyl, 2-pyridyl, 3-pyridyl), and hydroxyl groups. R4
Particularly preferred are acylamino groups (e.g.
acetylamino, benzoylamino, a group represented by the following chemical formula 7), an amino group (including anilino group, such as methylamino, anilino, orthochloroanilino, a group represented by the following chemical formula 8), and an alkyl group ( For example, ethyl, methyl, t-butyl, dodecyl).

[0022]

[C7]

[0023]

[Chemical formula 8]

R5 represents a hydrogen atom or a nonmetallic substituent. Preferably, a hydrogen atom, an alkyl group (having 1 to 12 carbon atoms, such as methyl, ethyl, methoxyethyl, benzyl, 2,4,6-trichlorophenylmethyl, 2-
phenethyl), aryl groups (e.g. phenyl, trichlorophenyl, dichlorophenyl, 4-chlorophenyl,
4-aminophenyl).

Other preferred structures of the structure represented by Q in formula (I) are formulas (III) and (IV).

[0026]

[Chemical formula 9]

[0027]

[Chemical formula 10]

R6 represents a hydrogen atom or a nonmetallic substituent, and specific examples thereof include those mentioned for R4. Among them, preferred are alkyl groups (
methyl, ethyl, t-butyl, dodecyl), aryl groups (e.g. phenyl, o-chlorophenyl, m-
chlorophenyl, 3,5-dichlorophenyl, m-cyanophenyl, m-trifluoromethylphenyl).

R7 and R8 represent the same thing as R4 in formula (I), and specific examples thereof include those described in formula (II). R7 and R8 are preferably
A hydrogen atom, an alkyl group (eg, methyl, ethyl), or R7 and R8 are bonded to form an aromatic ring.

Another preferred example of the structure represented by Q is general formula (V).

[0031]

[Chemical formula 11]

R9 and R10 are hydrogen atoms or nonmetallic substituents, and R9 and R10 may be combined to form a ring structure. Among these, R10 is preferably an alkyl group, an amino group (including alkylamino and anilino), an aryl group, or a heterocyclic group. R9 is a heterocyclic group, an aryl group, R1
1-CO- is preferred. R11 represents an alkyl group, an aryl group, an amino group (including alkylamino, cyclic amino, and anilino), or an alkoxy group (including aryloxy group). Among them, R10 is an amino group (for example,
2-chloroanilino, anilino, a group represented by the following chemical formula 12) are particularly preferred.

[0033]

[Chemical formula 12]

R9 is particularly preferably R11-CO-;
11 is an alkyl group (e.g. ethyl, isobutyl, t-
butyl), aryl groups (eg phenyl, orthochlorophenyl, orthomethoxyphenyl), and amino groups (eg anilino) are particularly preferred.

Furthermore, another preferred example of the structure represented by Q is the following general formula (VI).

[0036]

[Chemical formula 13]

In the formula, R12, R13, R14
is R4 of the general formula (I),
It has the same meaning as that represented by, and specific examples include those described in general formula (II).

In the general formula (VI), R
12 is an acylamino group (e.g., acetylamino,
Furoylamino, benzoylamino, pivaloylamino, a group represented by the following chemical formula 14) are most preferred.

[0039]

[Chemical formula 14]

R14 is preferably an acylamino group (eg, pivaloylamino, acetylamino, a group represented by the following chemical formula 15) or an alkyl group (eg, methyl, ethyl).
R13 is preferably a chlorine atom or a hydrogen atom.

[0041]

[Chemical formula 15]

[0042]

Another preferred structure represented by Q is general formula (VII).

[0044]

[Chemical formula 16]

R15 and R16 have the same meaning as R4 in the above general formula (II), and preferred examples and specific examples thereof include those described in the general formula (II). Among them, aryl groups (e.g., 2-acetylaminophenyl, phenyl, groups represented by the following chemical formula 17),
Alkyl groups (e.g. methyl, ethyl), heterocyclic groups (e.g. 2-pyridyl), acyl groups (e.g. acetyl, benzoyl), acylamino groups (1-30 carbon atoms, e.g.
acetylamino, pivaloylamino, benzoylamino) are preferred.

[0046]

[Chemical formula 17]

Other preferred structures represented by Q are the following general formulas (VIII) and (IX).

[0048]

[Chemical formula 18]

[0049]

[Chemical formula 19]

In the formula, R17, R19, and R20 have the same meaning as R4 in the general formula (II), and R18
represents a cyano group. In formula (IX), R17 is preferably an electron-withdrawing group, and preferably a phenyl group, a naphther group, a furan ring, or a chroman ring. In formula (VIII), R1
7 may be an electron-withdrawing group such as a cyano group, a phenyl group, or a heterocyclic group, or an electron-donating group such as an amino group. R19, R
Either one of 20 is preferably a cyano group. R17 and R
20 may form a ring structure.

Another preferred structure represented by Q is the following general formula (X).

[0052]

[C20]

In the formula, R21, R22, and R23 have the same meaning as R4 in the general formula (II), and specific examples thereof include those described in the general formula (II). X represents -N= or -C(R24)=,
R24 has the same meaning as R21. R21, R22, R24
is preferably an electron-withdrawing group.

Among those represented by formula (X), R21 is preferably an electron-withdrawing group such as trifluoromethyl, pentafluoroethyl, pentafluorophenyl or p-chlorophenyl. R22 is an electron-withdrawing group such as a cyano group, an oxycarbonyl group (eg, methoxycarbonyl, phenoxycarbonyl), or an aminocarbonyl group (eg, methylaminocarbonyl, anilinocarbonyl). For X, both -N= and -C(R24)= are preferable. As for R24, the preferable examples of R21 can be mentioned as they are. R23 is
Acylamino groups (e.g. acetylamino, pivaloylamino, benzoylamino, groups represented by the following chemical formula 21), oxycarbonylamino groups (e.g. methoxycarbonylamino, ethoxycarbonylamino, phenoxycarbonylamino), aminocarbonylamino groups (e.g. methyl Preferred are aminocarbonylamino, isobutylaminocarbonylamino, anilinocarbonylamino), alkyl groups (eg, t-butyl, methyl, ethyl), and the like.

[0055]

[C21]

Another preferred structure represented by Q is the following general formula (XI).

[0057]

[C22]

In formula (XI), R25 and R26 each independently represent an electron-withdrawing substituent. R27, R2
8, R29, R30, R31, and R32 are represented by the general formula (
It has the same meaning as that represented by R4 in II).

Among these, it is preferable that at least one of R25 and R26 is a cyano group. R25, R26
When one of them is a cyano group, the other is an oxycarbonyl group (having 2 to 30 carbon atoms, such as methoxycarbonyl, ethoxycarbonyl, isopropoxycarbonyl, phenoxycarbonyl), or an aminocarbonyl group (having 1 carbon number).
-30, for example, methylaminocarbonyl, ethylaminocarbonyl, anilinocarbonyl, dimethylaminocarbonyl), and a cyano group are preferred.

R27 is a hydrogen atom, an aminocarbonyl group (1 to 30 carbon atoms, for example, methylaminocarbonyl, ethylaminocarbonyl, anilinocarbonyl)
, cyano group, halogen atom (e.g. fluorine, chlorine, bromine), alkyl group (1 to 30 carbon atoms, e.g. methyl,
ethyl), oxycarbonyl group (2 to 30 carbon atoms, e.g. methoxycarbonyl, phenoxycarbonyl, isopropoxycarbonyl), hydroxycarbonyl group, alkylcarbonyl group (e.g. acetyl, pivaloyl)
is preferred.

R32 is a hydrogen atom, a sulfonylamino group (having 1 to 30 carbon atoms, such as methanesulfonylamino,
ethanesulfonylamino, p-toluenesulfonylamino), carbonylamino group (1 to 30 carbon atoms, e.g.
formylamino, acetylamino, pivaloylamino,
benzoylamino), oxycarbonylamino group (2 to 30 carbon atoms, e.g. methoxycarbonylamino, ethoxycarbonylamino, isopropoxycarbonylamino, phenoxycarbonylamino), aminocarbonylamino group (2 to 30 carbon atoms, e.g. methylamino carbonylamino, dimethylaminocarbonylamino, anilinocarbonylamino) are preferred. R23, R29,
R30 and R31 are preferably hydrogen atoms.

Another preferred structure represented by Q is the following general formula (XII).

[0063]

[C23]

In formula (XII), R33 and R34 each independently represent an electron-withdrawing substituent. R35, R3
6, R37, and R38 are R2 of the general formula (XI)
9, R30, R31, R32, R28. Among these, it is preferable that at least one of R33 and R34 is a cyano group. R3
3. When one of R34 is a cyano group, the other is preferably an oxycarbonyl group, an aminocarbonyl group, or a cyano group. Specific examples include those described in R25 and R26.

As R35, R36, R37, and R38, hydrogen atoms, halogen atoms (eg, fluorine, chlorine, bromine), nitro groups, and acylamino groups (having 1 to 30 carbon atoms, eg, acetylamino, pivaloylamino) are preferable. Among them, a hydrogen atom is most preferred.

Other preferred structures represented by Q are the following general formulas (XIII), (XIV) and (XV).

[0067]

[C24]

[0068]

[C25]

[0069]

[C26]

In formulas (XIII), (XIV), and (XV), R39, R40, and R41 represent a hydrogen atom or a nonmetallic substituent, and specific examples thereof include those mentioned for R1. Among them, R39 is an alkyl group (e.g. methyl, ethyl, t-butyl, isopropyl), an aryl group (e.g. phenyl, o-chlorophenyl, m-chlorophenyl, 3,5-dichlorophenyl, m-dicyanophenyl, m-trifluoro phenyl) is preferred. Further, R40 and R41 in formulas (XIII) and (XIV) are alkyl groups (e.g., methyl, ethyl, t-butyl, isopropyl), aryl groups (e.g., phenyl, 2
, 4,6-trimethylphenyl) is preferred. Also, R4
0, R41 in formula (XV) is alkyl (e.g., methyl, ethyl, t-butyl, isopropyl),
Aryl groups (e.g., phenyl, 3,5-dichlorophenyl, m-nitrophenyl), oxycarbonyl groups (e.g., methoxycarbonyl, ethoxycarbonyl, phenoxycarbonyl), aminocarbonyl groups (e.g., methylaminocarbonyl, dimethylaminocarbonyl, anitrophenyl), linocarbonyl), acyl groups (e.g. pivaloyl,
acetyl, benzoyl) are preferred.

The dye of the present invention may have an atomic group in the molecule that has the effect of suppressing fading. As the atomic group having the effect of suppressing fading, all those described in Japanese Patent Application No. 1-27078 can be used.

Specific examples of the dyes of the present invention are shown below, but the present invention is not limited thereto. (Compound example)

[0073]

[C27]

[0074]

[C28]

[0075]

[C29]

[0076]

[C30]

[0077]

[Chemical formula 31]

[0078]

[C32]

[0079]

[Chemical formula 33]

[0080]

[C34]

[0081]

[C35]

[0082]

[C36]

[0083]

[C37]

[0084]

[C38]

[0085]

[C39]

[0086]

[C40]

[0087]

[C41]

[0088]

[C42]

[0089]

[C43]

[0090]

[C44]

[0091]

[C45]

[0092]

[C46]

[0093]

[C47]

[0094]

[C48]

[0095]

[C49]

[0096]

[C50]

[0097]

[C51]

[0098]

[C52]

0099

[C53]

[0100]

[C54]

[0101]

[C55]

[0102]

[C56]

The method for synthesizing the dye of the present invention will be described. The dye of the present invention is synthesized by dehydration condensation of nitrone compound A and coupler compound B.

[0104]

[C57]

Coupler compounds that provide the dyes of the present invention include formulas (II), (III), (IV), (V), (
VI), (VII), (VIII), (IX), (X)
, (XI), (XII), (XIII), (XIV),
Corresponding to (XV), (Cp-1), (Cp-2), (
Cp-3), (Cp-4), (Cp-5), (Cp-6
), (Cp-7), (Cp-8), (Cp-9), (C
p-10), (Cp-11), (Cp-12), (Cp
-13), (Cp-14).

[0106]

[C58]

[0107]

[C59]

[0108]

[C60]

[0109]

[C61]

[0110]

[C62]

[0111]

[C63]

[0112]

[C64]

[0113]

[C65]

[0114]

[C66]

[0115]

[C67]

[0116]

[C68]

[0117]

[C69]

[0118]

[C70]

[0119]

[C71]

The coupler compound may of course be a tautomer.

The dye of the present invention can have various hues such as magenta, purple, blue, and cyan depending on the selection of substituents.

The heat-transferable dye of the present invention is incorporated into a coloring material layer on a support, used as a heat-transfer dye-providing material, and used for image formation by a heat-transfer system. Next, the case where the heat-transferable dye of the present invention is used for image formation by thermal transfer method will be described in detail below. Normally, to construct a full-color image, three color pigments of yellow, magenta, and cyan are required. Three colors can be selected from the dyes of the present invention. Among the heat-transferable dyes of the present invention, one color dye, magenta, yellow, or cyan, can be selected, and the other two colors can be selected from conventionally known dyes. Alternatively, two colors from magenta, yellow, and cyan can be selected from the pigments of the present invention, and the other color can be selected from conventionally known pigments. For the same color, the dye of the present invention and a conventionally known dye may be mixed and used. Furthermore, two or more types of the dyes of the present invention may be used in a mixture of the same color.

[0123] The method of using the thermal transfer dye of the present invention will be described. Thermal transfer dye-providing materials can be used in sheet form or in continuous roll or ribbon form. The yellow, magenta and cyan dyes of the present invention are usually arranged on a support so as to form independent areas. For example, a yellow dye area, a magenta dye area, and a cyan dye area are arranged on one support in a plane-sequential or line-sequential manner. Also,
It is also possible to prepare three types of thermal transfer dye-providing materials in which the yellow dye, magenta dye, and cyan dye described above are provided on separate supports, and then thermally transfer the dyes from these to one thermal transfer image-receiving material in sequence. The dyes of the present invention can be dissolved or dispersed together with a binder resin in a suitable solvent and coated on a support, or can be printed on a support by a printing method such as a gravure method. The thickness of the dye-donating layer containing these dyes is usually about 0.2 to 5 in terms of dry film thickness.
It is preferable to set the thickness to .mu.m, particularly in the range of 0.4 to 2 .mu.m. The pigment coating amount is 0.03 to 1 g/m2, preferably 0.
．． It is 1 to 0.6 g/m2. As the binder resin used with the above dye, any binder resin conventionally known for this purpose can be used, and usually one that has high heat resistance and does not hinder the transfer of the dye when heated is used. selected. For example, polyamide resins, polyester resins, epoxy resins, polyurethane resins, polyacrylic resins (e.g. polymethyl methacrylate, polyacrylamide, polystyrene-2-acrylonitrile), vinyl resins including polyvinylpyrrolidone, Vinyl chloride resin (e.g. vinyl chloride-vinyl acetate copolymer), polycarbonate resin,
Polystyrene, polyphenylene oxide, cellulose-based trees (e.g. methylcellulose, ethylcellulose,
Carboxymethyl cellulose, cellulose acetate hydrogen phthalate, cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, cellulose triacetate), polyvinyl alcohol resins (e.g. partially saponified polyvinyl alcohol such as polyvinyl alcohol, polyvinyl acetal, polyvinyl butyral), petroleum resin, rosin derivative, coumaron
Indene resin, terpene resin, polyolefin resin (eg, polyethylene, polypropylene), etc. are used. In the present invention, such a binder resin is
For example, it is preferably used in a proportion of about 20 to 600 parts by weight per 100 parts by weight of the dye. In the present invention, any conventionally known ink solvent can be used as the ink solvent for dissolving or dispersing the above pigment and binder resin.

As the support for the thermal transfer dye-providing material, any conventionally known support can be used. Examples include polyethylene terephthalate; polyamide; polycarbonate; glassine paper; condenser paper; cellulose ester; fluorine polymer; polyether; polyacetal; polyolefin; polyimide; polyphenylene sulfide; polypropylene; polysulfone; cellophane. The thickness of the support of the thermal transfer dye-providing material is generally 2 to 3 mm.
It is 0 μm. An undercoat layer may be provided if necessary. Further, a dye diffusion preventing layer made of a hydrophilic polymer may be provided between the support and the dye-donating layer. This further improves the transfer density. As the hydrophilic polymer, the water-soluble polymers described above can be used. A slipping layer may also be provided to prevent the thermal head from sticking to the dye-donating material. This slipping layer is composed of lubricating substances, such as surfactants, solid or liquid lubricants or mixtures thereof, with or without polymeric binders. In order to prevent sticking due to the heat of the thermal head and improve slippage when printing from the back side of the dye-donating material, it is preferable to apply an anti-sticking treatment to the side of the support on which the dye-donating layer is not provided. For example, ■ reaction products of polyvinyl butyral resin and isocyanate, ■ alkali metal salts or alkaline earth metal salts of phosphoric acid esters, and ■
It is preferable to provide a heat-resistant slip layer mainly composed of a filler. Polyvinyl butyral resin has a molecular weight of 60,000 to 20
with a glass transition point of 80 to 110°C,
Further, from the viewpoint of having a large number of reaction sites with isocyanate, it is preferable that the weight percentage of the vinyl butyral portion is 15 to 40%. As the alkali metal salt or alkaline earth metal salt of phosphoric acid ester, Gafac RD720 manufactured by Toho Chemical Co., Ltd. is used, and it has a concentration of 1 to 5 with respect to povinyl butyral resin.
It is good to use about 0% by weight, preferably about 10 to 40% by weight. The heat-resistant slip layer preferably has a heat-resistant lower layer, and is made of a combination of a synthetic resin that can be cured by heating and its curing agent, such as polyvinyl butyral and polyvalent isocyanate, acrylic polyol and polyvalent isocyanate, cellulose acetate and titanium chelating agent, Alternatively, a combination of polyester and an organic titanium compound may be applied by coating.

The dye-donor element may also be provided with a hydrophilic barrier layer to prevent diffusion of the dye towards the support. Hydrophilic dye barrier layers contain hydrophilic materials useful for their intended purpose. Generally excellent results have been obtained using gelatin, poly(acrylamide), poly(isopropylacrylamide), butyl methacrylate grafted gelatin, ethyl methacrylate grafted gelatin, cellulose monoacetate, methylcellulose, poly(vinyl alcohol), poly(ethyleneimine), poly( acrylic acid), a mixture of poly(vinyl alcohol) and poly(vinyl acetate), a mixture of poly(vinyl alcohol) and poly(acrylic acid), or a mixture of cellulose monoacetate and poly(acrylic acid). can get. Particularly preferred are poly(acrylic acid), cellulose monoacetate or poly(vinyl alcohol). The dye-providing material may be provided with a subbing layer. In the present invention, any undercoat layer may be used as long as it has the desired effect, but preferred specific examples include (acrylonitrile-vinylidene chloride-acrylic acid) copolymer (weight ratio 14:80:6), (butyl acrylate) copolymer -2-aminoethyl methacrylate-2-hydroxyethyl methacrylate) copolymer (weight ratio 30:20)
:50), linear/saturated polyesters such as Bostik 7650 (Emhart, Bostik Chemical Group) or chlorinated high density poly(ethylene-trichloroethylene) resins. There is no particular limit to the amount of the undercoat layer applied, but it is usually used in an amount of 0.1 to 2.0 g/m2.

In the present invention, the thermal transfer dye-providing material is superimposed on the thermal transfer image-receiving material, and heat is applied from either side, preferably from the back side of the thermal transfer dye-providing material, in accordance with the image information using a heating means such as a thermal head. By applying energy, the dye in the dye-donating layer can be transferred to the thermal transfer image-receiving material according to the magnitude of the heating energy, and a color image with excellent clarity and resolution and gradation can be obtained. Further, an anti-fading agent can also be transferred in the same manner. Heating means are not limited to thermal heads, but also laser light (
For example, known devices such as a semiconductor laser), an infrared flash, and a thermal pen can be used. In the present invention, the thermal transfer dye-providing material can be combined with a thermal transfer image-receiving material to print images using various thermal printing printers, facsimiles, magnetic recording systems, optical recording systems, etc., to print images on televisions, CRTs, etc. It can be used to create prints from the screen. For details of the thermal transfer recording method, reference can be made to the description in JP-A-60-34895.

The thermal transfer image-receiving material used in combination with the thermal transfer dye-providing material of the present invention is one in which an image-receiving layer for receiving the dye transferred from the dye-providing material is provided on a support. This image-receiving layer accepts the heat-transferable dye that migrates from the thermal transfer dye-providing material during printing, and contains a single substance capable of receiving the heat-transferable dye that has the function of dyeing the heat-transferable dye. It is preferable to have a film with a thickness of about 0.5 to 50 μm containing the binder material or other binder substances. Typical examples of polymers that can accept heat-transferable dyes include the following resins. (b) Those having an ester bond Dicarboxylic acid components such as terephthalic acid, isophthalic acid, and succinic acid (these dicarboxylic acid components may be substituted with sulfo groups, carboxyl groups, etc.), ethylene glycol, diethylene glycol, Polyester resin obtained by condensation of propylene glycol, neopentyl glycol, bisphenol A, etc.: Polyacrylic acid ester resin or polymethacrylic acid ester resin such as polymethyl methacrylate, polybutyl methacrylate, polymethyl acrylate, polybutyl acrylate: Polycarbonate resin: Polyvinyl acetate resin: Styrene acrylate resin: Vinyltoluene acrylate resin, etc. Specifically, JP-A No. 59-101395, JP-A No. 63-7971, JP-A No. 6
No. 3-7972, No. 63-7973, No. 60-294
Examples include those described in No. 862. In addition, commercially available products include Toyobo's Byron 290 and Byron 20.
0, Byron 280, Byron 300, Byron 103
, Byron GK-140, Byron GK-130, Kao ATR-2009, ATR-2010, etc. can be used. (b) Things with urethane bonds, such as polyurethane trees. (c) Polyamide resins having amide bonds, etc. (d) Things with urea bonds, such as urea resins. (e) Things with sulfone bonds, such as polysulfone resins. (f) Others having highly polar bonds, such as polycaprolactone resin, styrene-maleic anhydride resin, polyacrylonitrile resin, etc. In addition to the synthetic resins mentioned above, mixtures or copolymers thereof can also be used.

The thermal transfer image-receiving material, particularly the image-receiving layer, may contain a high-boiling organic solvent or a thermal solvent as a substance capable of receiving heat-transferable dyes or as a dye-diffusing agent. Specific examples of high boiling point organic solvents and thermal solvents include JP-A-62-174754 and JP-A-62-245253.
No. 61-209444, No. 61-200538, No. 62-8145, No. 62-9348, No. 62-
Examples include compounds described in No. 30247 and No. 62-136646. The image-receiving layer of the thermal transfer image-receiving material of the present invention may have a structure in which a substance capable of receiving a heat-transferable dye is dispersed and carried in a water-soluble binder. As the water-soluble binder used in this case, various known water-soluble polymers can be used, but a water-soluble polymer having a group capable of crosslinking with a hardening agent is preferred. The image receiving layer may be composed of two or more layers. In that case, a synthetic resin with a low glass transition point is used for the layer closer to the support, or a high-boiling point organic solvent or a hot solvent is used to improve dyeing properties, and the outermost layer is made of a synthetic resin with a low glass transition point. Avoid surface stickiness by using synthetic resins with higher points, or by minimizing or not using high boiling point organic solvents or hot solvents.
It is desirable to have a structure that prevents failures such as adhesion with other substances, retransfer to other substances after transfer, and blocking with the thermal transfer dye-providing material. The total thickness of the image receiving layer is 0.5
A range of 50 μm, particularly 3 to 30 μm is preferred. In the case of a two-layer structure, the outermost layer has a thickness of 0.1 to 2 μm, especially 0.2 to 1 μm.
It is preferable to set it in the range of m.

The thermal transfer image-receiving material of the present invention may have an intermediate layer between the support and the image-receiving layer. The intermediate layer is a cushion layer, a porous layer, a dye diffusion prevention layer, or a layer having two or more of these functions, depending on the constituent material.
In some cases, it also serves as an adhesive. The dye diffusion-preventing layer plays a role, in particular, in preventing the heat-transferable dye from diffusing into the support. The binder constituting this diffusion prevention layer may be water-soluble or organic solvent-soluble, but a water-soluble binder is preferred, and examples thereof include the water-soluble binders mentioned above as the binder for the image-receiving layer, particularly gelatin. The porous layer is a layer that prevents the heat applied during thermal transfer from diffusing from the image-receiving layer to the support and effectively utilizes the applied heat. The image receiving layer, cushion layer, porous layer, diffusion prevention layer, adhesive layer, etc. that constitute the thermal transfer image receiving material of the present invention include silica, clay, talc, diatomaceous earth, calcium carbonate, calcium sulfate, barium sulfate, aluminum silicate, Fine powders of synthetic zeolite, zinc oxide, litovone, titanium oxide, alumina, etc. may also be included. The support used in the thermal transfer image-receiving material of the present invention can withstand the transfer temperature and satisfies the requirements in terms of smoothness, whiteness, slipperiness, friction, antistatic property, denting after transfer, etc. You can use anything. For example, synthetic paper (polyolefin-based, polystyrene-based, etc.), high-quality paper, art paper,
Coated paper, cast coated paper, wallpaper, backing paper, synthetic resin or emulsion impregnated paper, synthetic rubber latex impregnated paper, synthetic resin internalized paper, paperboard, cellulose fiber paper, polyolefin coated paper (especially paper coated on both sides with polyethylene) Paper supports such as, various plastic films or sheets such as polyolefin, polyvinyl chloride, polyethylene terephthalate, polystyrene, methacrylate, polycarbonate, etc., and films or sheets treated to give white reflective properties to this plastic, and any combination of the above. A laminate according to the above can also be used.

[0130] A fluorescent brightener may be used in the thermal transfer image-receiving material. An example is K. Vevnkatarama
Volume n “The Chemistry of Sy”
``Nthetic Dyes'' Volume 5 Chapter 8, Japanese Patent Publication No. 6
Examples include compounds described in No. 1-143752. More specifically, stilbene compounds, coumarin compounds, biphenyl compounds, benzoxazolyl compounds, naphthalimide compounds, pyrazoline compounds, carbostyril compounds, 2,5-dibenzoxazolethiophene compounds, etc. Can be mentioned. Optical brighteners can be used in combination with antifade agents. In the present invention, in order to improve the releasability of the thermal transfer dye-providing material and the thermal transfer image-receiving material, among the layers constituting the dye-providing material and/or the image-receiving material, particularly preferably the outermost layer is the surface where both materials come into contact. It is preferable that a mold release agent be included in the mold release agent. Examples of mold release agents include solid or waxy substances such as polyethylene wax, amide wax, and Teflon powder; surfactants such as fluorine-based and phosphate esters; and conventionally known oils such as paraffin-based, silicone-based, and fluorine-based oils. Any mold release agent can be used, but
Particularly preferred is silicone oil. As the silicone oil, in addition to unmodified silicone oil, modified silicone oils such as carboxy-modified, amino-modified, and epoxy-modified silicone oils can be used. Examples include various modified silicone oils described on pages 6 to 18B of the "Modified Silicone Oil" technical data published by Shin-Etsu Silicone Co., Ltd. When used in an organic solvent-based binder, amino-modified silicone oil having a group that can react with the crosslinking agent of this binder (for example, a group that can react with isocyanate) is also emulsified and dispersed in a water-soluble binder. For example, carboxy-modified silicone oil (for example, manufactured by Shin-Etsu Silicone Co., Ltd.: trade name X-22-3710) is effective.

The layers constituting the thermal transfer dye-providing material and the thermal transfer image-receiving material used in the present invention may be hardened with a hardening agent. When curing organic solvent-based polymers, JP-A-61-199997 and JP-A-58-21539 are used.
Hardeners described in No. 8 etc. can be used. For polyester resins, it is particularly preferable to use isocyanate-based hardeners. For curing water-soluble polymers, see U.S. Pat. No. 4,678,739, column 41;
No. 55, No. 62-245261, No. 61-18942
The hardening agents described in No. 1, etc. are suitable for use. More specifically, aldehyde hardeners (such as formaldehyde), aziridine hardeners, epoxy hardeners, and vinylsulfone hardeners (N,N'-ethylene-bis(vinylsulfonylacetamide)). ethane, etc.), N-methylol hardeners (dimethylol urea, etc.), and polymer hardeners (compounds described in JP-A-62-234157, etc.).

[0132] An anti-fading agent may be used in the thermal transfer dye-providing material and the thermal transfer image-receiving material. Antifading agents include, for example, antioxidants, ultraviolet absorbers, or certain metal complexes. Examples of antioxidants include chroman compounds, coumaran compounds, phenol compounds, phenol compounds (for example, hindered phenols), hydroquinone derivatives, hindered amine derivatives, and spiroindane compounds. Also, JP-A-61-159644
Compounds described in the above are also effective. As a UV absorber,
Benzotriazole compounds (U.S. Pat. No. 3,533,
794, etc.), 4-thiazolidone compounds (U.S. Patent No. 3,352,681, etc.), benzophenone compounds (Japanese Patent Application Laid-open No. 56-2784, etc.), and others.
-48535, 62-136641, 61-8
There are compounds described in No. 8256 and the like. Also, JP-A-62
The ultraviolet absorbing polymer described in Japanese Patent No. 260152 is also effective. As a metal complex, US Pat. No. 4,241,15
No. 5, No. 4,245,018, columns 3 to 36, No. 4 of the same
, No. 254, No. 195, columns 3 to 8, JP-A-62-1747
No. 41, No. 61-88256, pages (27) to (29),
There are compounds described in Japanese Patent Application No. 62-234103, Japanese Patent Application No. 62-311096, Japanese Patent Application No. 62-230596, etc. An example of a useful anti-fading agent is JP-A-62-215
No. 272, pages (125) to (137). An anti-fading agent for preventing fading of the dye transferred to the image-receiving material may be included in the image-receiving material in advance, or it may be supplied to the image-receiving material from the outside by a method such as transfer from a dye-donating material. It's okay. The above antioxidants, ultraviolet absorbers, and metal complexes may be used in combination.

Various surfactants can be used in the constituent layers of the thermal transfer dye-providing material and the thermal transfer image-receiving material for the purposes of coating aids, improving releasability, improving slipperiness, preventing electrification, promoting development, and the like. For example, saponins (steroids), alkylene oxide derivatives (e.g. polyethylene glycol, polyethylene glycol alkyl ethers, polyethylene glycol alkyl aryl ethers, polyethylene glycol esters, polyethylene glycol sorbitan esters, polyalkylene glycol alkyl amines or amides, silicones nonionic surfactants such as polyethylene oxide adducts), glycidol derivatives (e.g. alkenylsuccinic acid polyglycerides, alkylphenol polyglycerides), fatty acid esters of polyhydric alcohols, alkyl esters of sugars: alkyl carboxylates, Alkyl sulfonates, alkylnaphthalene sulfonates, alkyl sulfates, alkyl phosphates, N-acyl-N-alkyl taurines, sulfosuccinates, sulfoalkyl polyethylene alkylphenyl ethers, polyoxyethylene alkyl phosphorus Anionic surfactants containing acidic groups such as carboxy groups, sulfo groups, phospho groups, sulfate ester groups, phosphate ester groups such as acid esters: amino acids, aminoalkyl sulfonic acids, aminoalkyl sulfates or phosphate esters, Double-sided surfactants such as alkyl betaines and amine oxides: Alkyl amine salts, aliphatic or aromatic quaternary ammonium salts, polycyclic quaternary ammonium salts such as pyridinium and imidazolium, and aliphatic or aromatic quaternary ammonium salts; Cationic surfactants such as phosphonime or sulfonium salts containing cationic surfactants can be used. Specific examples of these are described in JP-A-62-173463 and JP-A-62-183457. In addition, when dispersing substances that can accept heat-transferable dyes, mold release agents, anti-fading agents, ultraviolet absorbers, optical brighteners, and other hydrophobic compounds in a water-soluble binder, the interface is used as a dispersion aid. Preferably, an activator is used. For this purpose, in addition to the above-mentioned surfactants, surfactants described on pages 37-38 of JP-A-59-157636 are particularly preferably used.

[0134] The constituent layers of the thermal transfer dye-providing material and the thermal transfer image-receiving material may contain an organic fluoro compound for the purpose of improving slipperiness, preventing electrification, improving releasability, and the like. Representative examples of organic fluoro compounds include JP-B No. 57-9053, columns 8 to 17, JP-A No. 61-20944, JP-A No. 62-13.
Examples thereof include fluorine-based surfactants described in No. 5826, etc., and hydrophobic fluorine-containing compounds such as oily fluorine-based compounds such as fluorine oil, or solid fluorine compound resins such as tetrafluoroethylene resin. A matting agent can be used in the thermal transfer dye-providing material and the thermal transfer image-receiving material. As matting agents, in addition to the compounds described in JP-A-61-88256 (page 29) such as silicon dioxide, polyolefin or polymethacrylate, benzoguanamine resin beads, polycarbonate resin beads, AS resin beads, etc. No. 62-1100
There is a compound described in No. 65.

[0135]

EXAMPLES The following Examples and Comparative Examples show the production of a thermal transfer dye-providing material and a thermal transfer image-receiving material, printing using both materials, and testing of a thermal transfer image-receiving material.

Example 1 (Preparation of thermal transfer dye-providing material (1-1)) A 6 μm thick polyethylene terephthalate film (manufactured by Teijin) whose back surface was treated with heat-resistant slipping was used as a support. A thermal transfer dye-providing layer coating composition having the following composition was coated on the surface by wire bar coating so that the dry thickness was 1.5 μm to prepare a thermal transfer dye-providing material (1-1). Coating composition for thermal transfer dye-donating layer Dye 1

10 mmol Polyvinyl butyral resin (Denka Butyral 5000- manufactured by Denki Kagaku Co., Ltd.)
A)

3g
toluene

40ml methyl ethyl ketone

40ml Polyisocyanate (Takenate D110 manufactured by Takeda Pharmaceutical Co., Ltd.
N) 0.2ml Next, the thermal transfer dye-providing material of the present invention and the comparative thermal transfer dye-providing material (1-
2) to (1-14) were created respectively.

(Preparation of thermal transfer image-receiving material A) Synthetic paper with a thickness of 150 μm (manufactured by Oji Yuka Co., Ltd., YUPO-FPG) was used as a base material.
-150), and coated the surface with a coating composition for an image-receiving layer having the following composition with a wire bar to a dry thickness of 8.
A thermal transfer image-receiving material was formed by coating in a thickness of .mu.m. Drying was performed for 30 minutes in an oven at a temperature of 100° C. after temporary drying with a hair dryer. Image-receiving layer coating composition A Polyester resin (Toyobo Co., Ltd. Vylon-280
) 22g polyisocyanate (Kp-90: Dainippon Ink Chemical Co., Ltd.)
4g Amino-modified silicone oil (Shin-Etsu Silicone Kp-857) 0.5g
Methyl ethyl ketone

85ml toluene

85ml cyclohexanone
15ml

[0138] The thermal transfer dye-providing materials (1-1) to (1-14) obtained as above and the thermal transfer image-receiving material were
The thermal transfer dye-donor layer and the image-receiving layer are superimposed so that they are in contact with each other, and a thermal head is used from the support side of the thermal transfer donor layer, the output of the thermal head is 0.25 W/dot, the pulse width is 0.15 to 15 m Sec, and the dot density is Printing was carried out under the condition of 6 dots/mm, and when the image-receiving layer of the image-receiving material was dyed with a magenta dye in the form of an image, a clear image recording with no transfer unevenness was obtained. Next, each recorded thermal transfer material obtained as described above was irradiated with a 17,000 lux fluorescent lamp for 7 days to examine the stability of the color image. Status A reflection density was measured before and after irradiation, and the stability was evaluated based on the ratio. The results are shown in Table 1.

[0139]

[Table 1]

[0140] In the above table, the maximum value of reflection density is 1.5.
Those above are marked as ○, those of 1.0 or more and less than 1.5 are marked as △, and 1
．． Less than 0 was marked as x. In addition, for light fastness, the dye residual rate is 9.
0% or more is ◎, 80% or more and less than 90% is ○, 60% or more and less than 80% is △, 60
Less than % was marked as x.

Dye a was used as a comparative example.

[0142]

[C72]

From the above, it can be seen that the novel dye of the present invention has excellent transferability and high light fastness.

Example 2 Thermal transfer dye-providing material (2-1 ), (2-2
) and (2-3) were created. When printing was carried out using the same image-receiving material as in Example 1, a clear image recording without transfer unevenness was obtained as shown in Table 3. It also had excellent light fastness. Evaluation was performed in the same manner as in Example-1.

[0145]

[Table 2]

Examples of combinations of other thermal transfer image-receiving materials and the above thermal transfer dye-providing material of the present invention are shown below. Example-3 (Preparation of thermal transfer image-receiving material) Support with a thickness of 150 μm
Synthetic paper (YUPO-FPG-150 manufactured by Oji Yuka Co., Ltd.) was coated with image-receiving layer coating composition C having the following composition on the surface by wire bar coating so that the dry thickness was 10 μm, and thermal transfer image reception was performed. The material was prepared. After drying with a dryer, dry in an oven at a temperature of 100℃ for 30 minutes.
I went for a minute.

Image-receiving layer coating composition C Polyester resin No. 1*

2.0g Amino-modified silicone oil (KF
-857: Shin-Etsu Silicone) 0.5g Epoxy modified silicone oil (KF-100T: Shin-Etsu Silicone)

0.5g
Methyl ethyl ketone

85ml toluene

85ml cyclohexanone

30ml *Polyester resin No. 1

[0148]

[C73]

When printing was carried out in combination with the thermal transfer dye-providing materials of Examples 1 and 2, clear image recording was obtained. Moreover, the light fastness was also excellent.

Example 4 (Preparation of thermal transfer image-receiving material) Resin-coated paper was prepared by laminating polyethylene to a thickness of 15 μm and 25 μm on both sides of a 200 μm paper, and an image receiving material with the following composition was applied to the laminated surface of 15 μm thick. The layer coating composition was applied by wire bar coating to a dry thickness of 10 μm and dried to produce a thermal transfer image-receiving material. Coating composition for image-receiving layer Polyester resin No. 1

25g Amino modified silicone oil (KF-8
57: Shin-Etsu Silicone) 0.8g Polyisocyanate (Kp-90: Dainippon Ink)
4g methyl ethyl ketone

100ml toluene

100
When printing was carried out in the same manner as in ml Example 1, a clear and high-density image record was obtained. Moreover, the light fastness was also excellent.

Example 5 (Preparation of thermal transfer image-receiving material) An organic solvent solution of a dye-receiving polymer having the composition (B') was emulsified and dispersed in an aqueous gelatin solution having the composition (A') below using a homogenizer to obtain a dye-receiving material. A gelatin dispersion of the material was prepared. (A') Gelatin aqueous solution Gelatin

2.3g Sodium dodecylbenzenesulfonate (5% aqueous solution) 20ml
water

80ml (B') Dye-receptive polymer solution Polyester resin (manufactured by Toyobo: Vylon 300)
7.0g Carboxy-modified silicone oil (manufactured by Shin-Etsu Silicone: X-
22-3710)
0.7g
Methyl ethyl ketone
2
0ml toluene

10ml triphenyl phosphate
1.5g of the thus prepared dispersion was added with a fluorosurfactant (a) C3F7SO2N (
A solution of 0.5 g of C3F7) CH2COOK dissolved in 10 ml of a mixed solvent of water/methanol (1:1) was added to prepare a coating composition for an image-receiving layer. This coating composition was applied to a 150 μm thick synthetic paper (Oji Yuka Co., Ltd.: YUPO-SGG-150) with a corona discharge on the surface to a wet film thickness of 75 μm using a wire bar coating method, and dried to obtain a thermal transfer image. I got the material. Images were recorded in the same manner as in Example 1 using the thermal transfer dye-providing materials and thermal transfer image-receiving materials obtained in Examples 1 and 2. The images obtained had high density, clarity, and high fastness.

[0152]

As described above, when transferring to an image receiving material using the thermal transfer dye-providing material of the present invention, a clear color image with excellent fastness can be obtained.

Claims (1)

[Claims] Claim 1: A thermal transfer dye-providing material comprising a dye-providing layer containing a heat-transferable dye on a support, wherein the dye-providing layer contains a heat-transferable dye represented by the following general formula (I): A thermal transfer dye-providing material characterized by: General formula (
I) [Chemical formula 1] In formula (I), Q represents an atomic group necessary for the compound of formula (I) to have absorption in the visible region and/or near infrared region (
(excluding quinone monoimide and naphthoquinone monoimide structures), R1 represents a hydrogen atom or a nonmetallic substituent, and R2 and R3 each independently represent a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group. R2 and R3 may be bonded to each other to form a ring structure.