Silver halide photographic photosensitive material

Details Silver halide photographic photosensitive material Silver halide photographic photosensitive material

2003-05-22

2004-02-03

Schilling, Richard L. (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

C430S523000, C430S528000, C430S539000, C430S634000

Reexamination Certificate

active

06686139

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a silver halide photographic photosensitive material (hereinafter, sometimes simply referred to as a “photosensitive material”) and coating property thereof, and in particular, it relates to a photosensitive material that is excellent in high-speed coating suitability and has a coated surface in good condition.
2. Description of the Related Art
Large amounts of various kinds of surfactants have been added in photosensitive materials, and it is an important problem from the standpoint of environmental protection that the total addition amount of the surfactants is reduced. However, the surfactants achieve various functions, and the reduction of the addition amounts thereof brings about such problems caused by increase of surface tension that formation of uniform coated films is failed due to runout of a coating liquid upon high-speed coating, the property of the coated surface is deteriorated, and the dispersion stability of various kinds of additives is deteriorated thereby causing formation of insoluble matters by aggregation of the additives, which results in deterioration in the photograph quality. The high-speed coating suitability deeply relates to the surface tension, and in general, the coating suitability is improved when the surface tension is 35 dyne/cm or less. The surface tension relates to the addition amount of the surfactant, and a large amount thereof is necessarily added for the high-speed coating. As a result, various problems are involved that deterioration of the surface property of the coated film due to formation of aggregated matters, and elution and accumulation of the surfactant in the processing liquid upon development processing causing formation of insoluble matters in the liquid.
SUMMARY OF THE INVENTION
The invention has been made to solve the problems associated with the conventional techniques and to attain the following objects. A first object of the invention is to provide a silver halide photographic photosensitive material, in which the surface tension is effectively reduced by addition of a small amount of a surfactant to obtain solubility and coating property that are sufficiently suitable for production and photographic quality.
Namely, the present invention provides a silver halide photographic photosensitive material comprising a support, a photosensitive silver halide emulsion layer formed on at least one surface of the support, and a surface protective layer formed on the surface of the support, wherein the silver halide photographic photosensitive material contains at least one compound represented by the following general formula (1) and at least one compound represented by the following general formula (2).
wherein in the general formula (1), R represents an alkyl group substituted with an atom or an atomic group other than fluorine, or an unsubstituted alkyl group; R
af
represents a perfluoroalkylene group; W represents a hydrogen atom or a fluorine atom; L
a
represents an unsubstituted or substituted alkylene group, a substituted or unsubstituted alkyleneoxy group or a divalent group combining these group; one of A and B represents a hydrogen atom, and the other thereof represents —L
b
—SO
3
M; M represents a cation or a hydrogen atom; and L
b
represents a single bond or a substituted or unsubstituted alkylene group.
In the general formula (2), R
31
represents an alkyl group having from 6 to 25 carbon atoms or an alkenyl group having from 6 to 25 carbon atoms; R
32
may be the same or different with each other and each represents a hydrogen atom, an alkyl group having from 1 to 14 carbon atoms, an alkenyl group having from 1 to 14 carbon atoms, an aralkyl group having from 7 to 20 carbon atoms or an aryl group having from 6 to 18 carbon atoms; l
1
represents an integer of from 1 to 10; m
1
represents an integer of from 0 to 30; n
1
represents an integer of from 0 to 4; e represents an integer of 0 or 1; Z
31
represents OSO
3
M or SO
3
M; and M represents a cation.
In one aspect, the present invention provides the silver halide photographic photosensitive material, wherein the compound represented by the general formula (1) is a compound represented by the following general formula (3).
In the general formula (3), R
1
represents a substituted or unsubstituted alkyl group having a total carbon number of from 6 to 15, provided that R
1
does not represents an alkyl group substituted with a fluorine atom; R
f
represents a perfluoroalkyl group having from 1 to 6 carbon atoms; one of X
1
and X
2
represents a hydrogen atom, and the other thereof represents —L
b
—SO
3
M; M represents a cation or a hydrogen atom; L
b
represents a single bond or a substituted or unsubstituted alkylene group; and n represents an integer of from 1 to 8.
In another aspect, the present invention provides the silver halide photographic photosensitive material, wherein R
f
in the general formula (3) is a perfluoroalkyl group having from 2 to 4 carbon atoms.
Further, the present invention provides a silver halide photographic photosensitive material comprising a support, a photosensitive silver halide emulsion layer formed on at least one surface of the support, and a surface protective layer formed on the surface of the support, wherein the silver halide photographic photosensitive material contains at least one compound represented by the following general formula (A) and at least one compound represented by the following general formula (2).
In the general formula (A), R
1
and R
2
each independently represent a fluoroalkyl group having from 2 to 6 carbon atoms and from 1 to 11 fluorine atoms; R
3
and R
4
each independently represents a hydrogen atom or an alkyl group; one of A and B represents a hydrogen atom, and the other represents —L
b
—SO
3
M; M represents a hydrogen atom or a cation; and L
b
represents a single bond or a substituted or unsubstituted alkylene group.
In the general formula (2), R
31
represents an alkyl group having from 6 to 25 carbon atoms or an alkenyl group having from 6 to 25 carbon atoms; R
32
may be the same or different and each represents a hydrogen atom, an alkyl group having from 1 to 14 carbon atoms, an alkenyl group having from 1 to 14 carbon atoms, an aralkyl group having from 7 to 20 carbon atoms or an aryl group having from 6 to 18 carbon atoms; 1
1
represents an integer of from 1 to 10; m
1
represents an integer of from 0 to 30; n
1
represents an integer of from 0 to 4; e represents an integer of 0 or 1; Z
31
represents OSO
3
M or SO
3
M; and M represents a cation.
In another aspect, the present invention provides the silver halide photographic photosensitive material, wherein at least one of a front surface and a back surface has a surface electric resistance of from 10
10
&OHgr; to 10
15
&OHgr;.
Further, in another aspect, the present invention provides the silver halide photographic photosensitive material, wherein at least one of the surface protective layer and a hydrophilic colloid layer, that is other than the surface protective layer, contains at least one nonionic surfactant represented by the following general formula (4):
R′—(A—(B)
n
—R)
m
  General Formula (4)
In the general formula (4), m represents an integer of 1 or 2; n represents an integer of from 1 to 60; R represents a hydrogen atom or a linear or branched alkyl group having from 1 to 4 carbon atoms; R′ represents a substituted or unsubstituted alkyl group having from 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having from 1 to 30 carbon atoms, or a substituted or unsubstituted aryl group having from 1 to 30 carbon atoms; A represents —O—, —S—, —COO—, —N(R
1
)—, —CO—N(R
1
)— or —SO
2
—N(R
1
)—; R
1
represents a hydrogen atom or a substituted or unsubstituted alkyl group; and B represents an oxyalkylene group.
DETAILED DESCRIPTION OF THE INVENTION
The invention will be described in detail below.
The silver halide photographic material of the invention contains a support having on at least one s

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