Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Reexamination Certificate
1998-06-03
2002-01-08
Schilling, Richard L. (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Diffusion transfer process, element, or identified image...
C430S216000, C430S218000, C430S351000, C430S380000, C430S443000, C430S959000
Reexamination Certificate
active
06337170
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a color diffusion transfer image forming material.
2. Description of the Related Art
It is well known to form an image by heat developing a silver halide photography light-sensitive material. Such process is described, for example, in “Base for Photographic Technology (ed. By Non-Silver Salt Photography (1982), Corona Corp.)”, pp. 242 to 255, U.S. Pat. No. 4,500,626 and the like. The method where a silver halide is used for a light-sensitive material has been widely effected since the material is excellent in photographic properties such as sensitivity and gradation as compared with methods such as an electrophotography method, diazo photography method and the like. There are a lot of methods suggested in which a color image is formed by heat development using a silver halide light-sensitive material. One of the methods may be a coloring developing method in which a dye image is formed by coupling reaction of an oxidation product of a developing agent with a coupler. Regarding the developing agent and coupler used in the color developing method, there have been suggested combination of p-phenylenediamines reducing agents with phenol or an active methylene coupler (see, U.S. Pat. No. 3,531,256), a p-aminophenol-based reducing agent (see, U.S. Pat. No. 3,761,270), combination of a sulfonamidephenol-based reducing agent with a tetra-equivalent coupler (see, U.S. Pat. No. 4,021,240), and the like.
However, the above-described method has defects such as undesired coloring of a undeveloped part due to an undeveloped silver halide remaining after the treatment through printing out or lapse of time, color clouding due to simultaneous existence of reduced silver and color image in an exposed part. Thus, in order to solve these defects, a dye transfer method in which a diffusible dye is formed by heat developing and transferred to a dye-fixing layer has been suggested.
Such a diffusion transfer type photosensitive material is generally classified into two types: 1) a dye-fixing layer which can receive a dye is supported on the same support as for a light-sensitive material and 2) a dye-fixing layer is supported on a different support from that for a light-sensitive material.
When used as a heat developing color light-sensitive material, it is desirable that a dye-fixing material supported on a different support from that for a light-sensitive material is used, in order to obtain a dye image with high color purity. In such a case, a dye is diffused and transferred, simultaneously with formation of a diffusible dye or after the formation of a diffusible dye by color development.
In a method where a diffusible dye is released or formed in image form by heat development and the diffusible dye is transferred to a fixing element, various kinds of dye donative compounds and silver halides can be used to obtain both a negative dye image and a positive dye image. The more details are described in U.S. Pat. Nos. 4,500,625, 4,483,914, 4,503,137 and 4,559,290, Japanese Patent Application Laid-Open (JP-A) Nos. 58-149,046, 60-133,449, 59-218,443 and 61-238,056, European Patent Application Laid-Open (EP-A) No. 220,746A2, Open Technical Publication No. 87-6199, EP-A No. 210660A2, and the like. However, these methods have a problem that sensitivity of a light-sensitive material is lowered since a color-developed dye is previously fixed to the dye donative substance. Therefore, it is preferable to realize a method in which a colorless coupler is first reacted with a developing agent and a subjected dye is diffused.
Regarding a process for forming an image according to the above-described coupling method, Japanese Patent Application Publication (JP-B) No. 63-36,487, JP-A Nos. 5-224,381 and 6-83,005, and the like disclose a color developing agent precursor which releases p-phenylenediamine and a light-sensitive material which contains a coupler. JP-A No. 59-111,148 discloses combination of a ureidoaniline-based reducing agent with an active methylene type coupler. JP-A No. 58-149,047 discloses a light-sensitive material using a coupler which has a polymer chain in a leaving group and which releases diffusible dye through color development.
However, color developing agents or precursors thereof used in these documents have problems that color image concentration after transfer is insufficient. In addition, increases in photo image fastness and stain during storage are remarkable. Therefore, there are needs to provide a technique which suffices fastness and transfer concentration simultaneously.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a color diffusion transfer image forming material with excellent color image concentration and image fastness.
Further, the object of the present invention is to provide a color diffusion transfer image forming material with excellent color image concentration and image fastness, which can suffice fastness and transfer concentration simultaneously.
The inventors have found that the object of the present invention can be solved by the following methods i) to iv).
i) A color diffusion transfer image forming material comprising a light-sensitive material and a dye-fixing material,
wherein the light-sensitive material comprises a first support having thereon a light-sensitive silver halide, a binder, a first compound represented by general formula (I) described below, and a second compound that forms or releases a diffusible dye by reacting with the oxidation product of the first compound,
wherein the dye-fixing material comprises at least a dye-fixing layer,
wherein the dye-fixing layer or an adjacent layer contains at least one of a third compound represented by general formula (II), (III), (IV), (V) or (VI) described below, and
wherein the dye-fixing material is coated on the first support or on a separate support, and the light-sensitive material and the dye-fixing material are located so that the diffusible dye is transferred from the light-sensitive material to the dye-fixing material when the light-sensitive material is developed after exposure:
In the formula (I), each of R
1
to R
4
represents independently a hydrogen atom or substituent. A represents a hydroxyl group or substituted amino group. X represents a group selected from the group consisting of —NHCO—, —NHSO—, —NHSO
2
—, and —NHPO<. Y represents a divalent connecting group. z represents a nucleophilic group which can attack X, when oxidized. R
1
and R
2
may be linked to each other to form a ring. R
3
and R
4
may be linked to each other to form a ring.
In the formula (II), R
1
represents a hydrogen atom, an alkyl group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, an alkoxycarbamoyl group or a trialkylsilyl group.
A represents a group of non-metal atoms necessary to form a 5-membered or 6-membered ring with —C═C—O—. Each of R
2
, R
3
and R
4
represents independently a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, an aryl group, an aryloxy group, an aralkyl group, an aralkyloxy group, an alkenyl group, an alkenoxy group, an acylamino group, a halogen atom, an alkylthio group, a diacylamino group, an arylthio group, an alkoxycarbonyl group, an acyloxy group, an acyl group or a sulfonamide group.
In the formula (III), R
1
represents a hydrogen atom, an alkyl group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, an alkoxycarbamoyl group or a trialkylsilyl group.
R
5
represents an alkyl group, an alkoxy group, an alkoxycarbonyl group, an arylthio group, an arylsulfinyl group, an arylsulfonyl group, an aralkyl group, a halogen atom, an aryl group or an acyl group.
R
6
represents a hydrogen atom, an alkyl group, an alkoxy group (provided that R
1
O— and R
6
never represent the same substituent), an aralkyloxy group, an alkylthio group, an aralkylthio group, an acylamino group, an acyl group, an alkylamino group, an arylamino group or a heterocyclic amino group. R
7
represents a hydrogen atom, a halogen atom
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