摘要:
A color photographic light-sensitive material is described, comprising at least one of a dye-providing 2-acylaminophenol derivative represented by the formula A-L-D, wherein A is a reducing group, L is a bonding group, and D is an image forming dye or dye precursor group.
摘要:
A heat-developable light-sensitive material is described which is capable of providing images of high density and low fog in a short period of time, and which is excellent in stability. The heat-developable light-sensitive material comprises a support and formed thereon a heat developable light-sensitive layer, wherein said light-sensitive material contains at least one compound selected from the group consisting of compounds represented by formulae (I), (II), (III) and (IV) as a base precursor ##STR1## wherein symbols represent the same groups as defined in claim 1.
摘要:
A heat developable photosensitive material comprising a support having thereon at least one light-sensitive layer comprising light-sensitive silver halide and a binder, wherein at least one layer contains a base precursor represented by the following general formula (I): ##STR1## wherein at least one of X, Y and Z, which may be the same or different, represents an electron-attractive substituent selected from the group (a) consisting of a halogen atom, a nitro group, an alkysulfinyl group, an arylsulfinyl group, an acyl group, a sulfamoyl group, a sulfamoyl group substituted with an aryl group, a substituted aryl group, an alkyl group or a substituted alkyl group, a carbamoyl group, a substituted carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an aryloxysulfonyl groups ##STR2## a nitroso group, ##STR3## wherein B is defined as in general formula (I), and R, R.sup.1 and R.sup.2 each represents a hydrogen atom, an alkyl group or an aryl group, and the alkyl or aryl moiety of these groups may be further substituted;the remainder of X, Y and Z being selected from the group (b) consisting of a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, an aralkyl group, a silyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group and a hydroxy group, wherein the alkyl and aryl moieties may be further substituted with a substituent other than a perhaloalkyl group containing up to 3 carbon atoms,provided that at least one of X, Y and Z represents a group other than a halogen or a nitro group, and any two of X, Y and Z may combine to form a ring;B represents a mono-acidic or di-acidic base having a pKa value of at least 7 and containing not more than 12 carbon atoms; andn and m each represents 1 or 2, provided that the net charge of the compound is zero.
摘要:
A process for formation of a base, which comprises reacting an acetylide compound with a salt. The acetylide compound has the following formula:(R--C.tbd.C--).sub.n Mwherein R is a monovalent group selected from the group consisting of an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group and a heterocyclic group, each of which may have one or more substituent groups; M is an n-valent transition metal atom; and n is 1, 2 or 3. The salt is composed of an anion having an affinity for the transition metal (M) (the affinity of the anion for the transition metal is more than that of the acetylide anion (R--C.tbd.C.crclbar.)), and a cation derived from one selected from the group consisting of an alkali metal, an alkaline earth metal, ammonia and an organic base. A light-sensitive material containing the acetylide compound and the salt is also disclosed.
摘要:
A heat developable light-sensitive material comprising a support having thereon at least one light-sensitive layer wherein at least one layer comprises a compound represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, a heterocyclic group each of which may be substituted or unsubstituted; a carboxy group or a salt thereof; R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, an aralkyl group, a heterocyclic group, a sulfamoyl group, a carbamoyl group, an acyl group, an alkoxy group, an aryloxy group, an amino group, an acylamino group, an alkoxycarbonyl group, an aryloxycarbonyl group, an acyloxy group each of which may be substituted or unsubstituted; a phosphoryl group, a phosphinyl group, a thio group, a sulfinyl group or a sulfonylamino group, each of which is substituted with a substituted or unsubstituted alkyl group or aryl group; a cyano group, a hydroxy group, a carboxy group or a salt thereof; X.sub.0 represents a group capable of accelerating decarboxylation; B.sub.0 represents an organic base; and n.sub.0 represents 1 when B.sub.0 represents a monoacidic base or 2 when B.sub.0 represents a diacidic base.The heat developable light-sensitive material containing a base precursor represented by the general formula (I) has excellent stability during preservation and provides a color image having a high color density and low fog in a short development time.
摘要:
A heat developable light-sensitive material containing a compound represented by the general formula (I):[Ar.sub.n (R).sub.3-n CCO.sub.2 H].sub.l .multidot.B.sub.m (I)wherein ar represents an aryl group or a heterocyclic group; R represents a substituent other than an aryl group and a heterocyclic group; Ar and R may be bonded in a part thereof to form a ring; B represents a mono- or diacidic base which has a pKa of 7 or more and contains 12 or less carbon atoms; n represents an integer from 1 to 3; l and m each represents an integer of 1 or 2 and maintain a relationship in that a number of positive charge and a number of negative charge are equal; when n represents 1 or 2, two R's or Ar's may be the same or different, when n represents 3, three Ar's may be the same or different; and the substituent represented by Ar or R may be further substituted with a substituent. The compound represented by the general formula (I) is a base precursor which is stable at normal temperature but rapidly decomposes to release a base by heating and therefore the heat developable light-sensitive material containing the base precursor has excellent preservability and provides images having good image quality, i.e., low fog density and high image density upon a short period of developing time.
摘要:
A heat developable color photographic light-sensitive material comprising a support having thereon at least one layer containing a compound represented by the formula:R--C.tbd.C--M.sub.1/kwherein R represents an unsubstituted or substituted group selected from an alkyl group, cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group and a heterocyclic group; M represents a hydrogen atom or a transition metal atom; and k is an integer of 1 to 3. This heat-developable color photographic light-sensitive material provides a high maximum density and a low fog by heat developing at a relatively low temperature and for a short time.
摘要:
A heat-developable light-sensitive material is described, which contains fine particles of a substantially water-insoluble base precursor incorporated in a binder. This light-sensitive material is superior in stability with the passage of time and the changes on the photographic characteristics such as maximum density, minimum density and sensitivity are less during the storage thereof.
摘要:
A heat developable light-sensitive material containing a novel base precursor (I), which is stable during storage and rapidly decomposes to release a basic component upon heating higher than a certain temperature, has excellent storability and provides an image having a good image quality, i.e., a low fog density and a high image density within a short period of developing time.
摘要:
A heat developable photographic material comprising a support having thereon at least a photosensitive silver halide, a binder, and at least on of base precursors represented by following formula (I) or (II): ##STR1## wherein R represents an alkyl group, an alkylene group, an aryl group, an arylene group, a monovalent or divalent heterocyclic group, each of which may be unsubstituted or substituted; B represents a mono- or di-acidic, nitrogen-containing, sulfur-free base having a pKa of not lower than about 7 and containing 12 carbon atoms or less; x is an integer of 1 when R represents a monovalent group or an integer of 2 when R represents a divalent group, y is the same as x when B represents the mono-acidic base or an integer of 1 when B represents the di-acidic base; and z is an integer of 2 when R represents a monovalent group and B represents the di-acidic base or otherwise an integer of 1; R' represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group or a heterocyclic group, each of which may be substituted or unsubstituted; X represents a substituent; p represents an integer of 0 to 4; and m' represents the valence number of M whereby stability with the passge of time prior to heat development is improved.