摘要:
A liquid toner developer composition suitable for use in developing electrostatic charge patterns, characterized in that the developer contains a metal alkyl sulphonate ionic surfactant in which the metal ion is a bivalent metal ion selected from the group consisting of zinc(II), lead(II), cadmium(II) and copper(II) and the sulphonate group thereof is present directly on an alkyl chain containing at least 6 carbon atoms in a straight chain, which sulphonate has a positive charging effect on the toner, and the sizes of the toner particles and the amount in which said sulphonate is present are selected such that the toner can develop a charge pattern having a charge level corresponding to 50 V for a capacitance of 1.5.times.10.sup.-11 F.cm.sup.-2 up to an optical density of at least 0.8.
摘要:
Fluorine-containing surfactants according to formula (Rf--X).sub.n --A--L--Z wherein Rf is a short-chain fluorine-containing group derived from hexafluoropropylene or trifluorochloroethylene, X is --O--, --S--, or --SO.sub.2 --, n is at least 2, the Rf groups being same or different, L is a monovalent bond or a bivalent bridging group such as --COO--alkylene, --CONR.sup.1 --alkylene, or --SO.sub.2 NR.sup.1 --alkylene, wherein R.sup.1 is hydrogen or C.sub.1 -C.sub.5 alkyl, and Z represents a hydrophilic polyoxyethylene group or a hydrophilic group such as ##STR1## wherein M is hydrogen, an alkali metal, ammonium, or organic ammonium, and R.sup.3 is alkyl; A is an aliphatic, aromatic, or aliphatic-aromatic group. These surfactants can be used in hydrophilic colloid layers, which may form part of light-sensitive silver halide materials.
摘要:
Film-forming cellulose ester compositions containing at least one solvent and at least one phosphate as stripping aid, said phosphate being a mono- or di-C.sub.12 -C.sub.20 alkyl phosphate, the non-esterified hydroxyl group(s) of which is (are) in the free acid form. The invention also relates to a method of manufacturing cellulose ester film, comprising adding to cellulose ester, at least one solvent and at least one above defined phosphate, casting the resulting film-forming cellulose ester composition on a smooth casting surface, and stripping said cellulose ester composition in the form of a film.
摘要:
Photographic elements containing image-wise developable silver halide are developed in the presence of an oxathioether development activator according to the formula:R.sup.1 --A--(OCH.sub.2 CH.sub.2).sub.n --S--A'--(X--A").sub.m --Y--R.sup.2wherein:R.sup.1 is H, alkyl, hydroxyalkyl, or R.sup.2 --Y--(A"--X).sub.m --A'--S--,A, A', and A" is alkylene, with the proviso that A is a monovalent bond when R.sup.1 is hydrogen or alkyl or hydroxyalkyl,X is --OCO--, --SO.sub.2 --, --CONH--, or Y,Y is ligand or complexing function of the type of --S-- and --N(Q)-- (Q=H or alkyl),R.sup.2 is alkyl, which may be substituted by OH, or when Y is --N(Q)--, R.sup.2 together with Q may represent the atoms needed to complete a nitrogen-containing saturated ring,n is at least 2, and m is 0 or 1.The development activators can be used in black-and-white development or in color development. They can be incorporated in the photographic material or in the developing solution.In reversal processing they can also accomplish the task of the second exposure or of the fogging agent to render the silver halide remaining after the first development developable.
摘要:
The processing of exposed photographic silver halide color materials is described while using a bleach or bleach-fixing bath containing better bleach-accelerating compounds. The bleach-accelerating compounds are polyoxyethylene compounds comprising at least 20 mol % of recurring oxyethylene units, which carry a thioether group in a sidechain.
摘要:
A proteinaceous material such as gelatin is hardened by treatment with an aqueous solution of a partial hydrolysis product of cyanuric chloride that has been buffered with a water-soluble borate, e.g. sodium metaborate, potassium metaborate or ammonium metaborate.The proteinaceous material can be a proteinaceous coating such as a photographic silver halide emulsion layer, a backing layer, a protective layer, a filter layer or any other photographic auxiliary layer.
摘要:
A method for the preparation of a planographic printing plate wherein a sheet material, which comprises an exterior hydrophilic colloid layer having concentrated on its surface a silver image formed by the silver complex diffusion transfer process with NiS or mixed crystal NiS.Ag.sub.2 S development nuclei in which the molar ratio of NiS to Ag.sub.2 S is not smaller than 1:1, is treated with a liquid for hydrophobizing the silver image for planographic printing, such liquid containing in dissolved state a heterocyclic compound corresponding to one of the following tautomeric structures (A) and (B) or (C) and (D): ##STR1## wherein: R.sup.1 represents hydrogen, amino or acylamino,R.sup.2 represents an alkyl group, andR.sup.3 represents an alkyl group, or an alkanamido-arylene group.
摘要:
A proteinaceous material such as gelatin is hardened by treatment with an aqueous solution of a partial hydrolysis product of cyanuric chloride that has been buffered with a water-soluble borate, e.g. sodium metaborate, potassium metaborate or ammonium metaborate.The proteinaceous material can be a proteinaceous coating such as a photographic silver halide emulsion layer, a backing layer, a protective layer, a filter layer or any other photographic auxiliary layer.
摘要:
Proteinaceous material such as gelatin is hardened by treatment with an aqueous solution of the partial hydrolysis product of a 2,4-dichloro-6-alkoxy-S-triazine with a water-soluble tertiary phosphate and/or a water-soluble borate, wherein the 2,4-dichloro-6-alkoxy-s-triazine corresponds to the formula: ##STR1## wherein R is a lower alkyl or alkoxyalkyl group. The proteinaceous material can be a proteinaceous coating such as a photographic silver halide emulsion layer, a backing layer, a protective layer, a filter layer, or any other photographic auxiliary layer.