Abstract: The color-intensity of exposed and developed Kodachrome color film in the form of color transparencies or continuous strip such as movie film can be reduced by treating selected areas or all of the emulsion side of said color film with an aqueous solution of a dichromate salt acidified with an inorganic mineral acid or formic acid. Any undesirable alteration in color tone is minimized by including a soluble salt of nickel or cobalt in said aqueous solution. The reduction in color-intensity is a function of time and/or acid concentration.

Abstract: Radiation-sensitive emulsions and photographic elements incorporating these emulsions are disclosed. In the emulsions silver halide host grains of a face centered cubic rock salt type crystal structure are present. Nonisomorphic silver salt of a really limited epitaxial compatibility is located on and substantially confined to selected sites of the host grains.

Abstract: Compounds of the formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 independently of one another are hydrogen, alkyl or alkoxy and R.sub.2 additionally represents a radical of the formula ##STR2## in which R.sub.1 and R.sub.3 have the abovementioned meanings, R.sub.4 is unsubstituted or substituted phenoxy or unsubstituted or substituted amino and R.sub.5 is hydrogen or a radical of the formula ##STR3## in which R.sub.1, R.sub.3 and R.sub.4 have the abovementioned meanings and R.sub.2 ' has the same meanings as R.sub.1 and R.sub.3 are suitable development accelerators in the development of exposed, photographic materials containing silver halide.They accelerate the reduction of the exposed silver salt to silver and increase the speed of photographic material.

Abstract: A silver halide photographic emulsion is described, which has halogen composition comprises at least 60 mole % of silver chloride, 40 mole % or less of silver bromide, and 5 mole % or less of silver bromide. Grain formation is performed in the presence of a silver halide solvent selected from the group consisting of tetrasubstituted thioureas and organic thioethers, and from 10.sup.-8 to 10.sup.-5 mole of a water-soluble iridium compound per mole of silver halide. This photographic emulsion exhibits high sensitivity and provides high contrast even by flash exposure. Thus, it is useful for the production of light-sensitive materials to be used in the production of printing plates in accordance with photographic engraving.

Abstract: A developing solution for a light-sensitive printing plate having an o-quinonediazide-containing light-sensitive layer is disclosed. The developing solution is comprized of an aqueous solution of alkali silicate and a chelating agent. By including the chelating agent within the developing solution it is possible to carry out development utilizing water which contains typical impurities such as insoluble calcium silicate or magnesium silicate for a long period of time which substantially has no formation of insoluble matter within the developing machine. Use of the developing solution substantially eliminate the formation of any deposit within the spraying pipes and nozzles of the developing machine which it is used in connection with.

Abstract: A process for forming a color image is disclosed. The process involves providing a color light-sensitive photographic material and imagewise exposing the material. The latent images within the exposed material are then developed and subjected to intensification processing. Thereafter, the material is subjected to treatment with a dilute buffer solution having a pH adjusted within the range of 2 to 7. The process allows for the elimination of the washing step conventionally used in processing photographic materials. Furthermore, the process provides color images having a reduced amount of staining and a large intensification factor while utilizing color photographic materials containing an extremely small amount of silver.

Abstract: A silver halide emulsion is disclosed which contains silver halide grains formed in the presence of a silver halide solvent. The solvent is a benzimidazole derivative having a hydrogen atom connected to the nitrogen atom at the 1st position thereof. By using this particular solvent a regular silver halide photographic emulsion having high sensitivity causing less fog is obtained. The silver halide solvent is unexpectedly advantageous in that can be almost completely desorbed from the silver halide grains by washing.

Abstract: Small amounts of organic oxidants are as effective in lowering fog in negative silver halide emulsion, when added prior to the end of digestion or chemical sensitization, as when higher amounts are added as after-additions.

Abstract: A silver halide light-sensitive photographic material comprises a support and a Lippmann emulsion layer on the support containing a silver halide and at least one compound of the following formula in a quantity of at least 3.5.times.10.sup.-3 mole per mole of the silver halide of the Lippmann emulsion layer: ##STR1## wherein Z represents an atomic group necessary to form a heterocyclic ring; Y is a hydrogen atom or --S--R.sub.1 group; R and R.sub.1 are each a hydrogen atom, an alkali-metal atom, ammonium or an alkyl group; X and X.sub.1 are each a divalent organic group; m and m.sub.1 are each 0 or 1; and n is an integer of up to 3, provided if n is 0, Y is --S--R.sub.1 group.The silver halide light-sensitive photographic material is developed in a developer containing at least 0.6 mole per liter of sulfurous ions.

Abstract: Developer composition with a negative charge enhancing additive is disclosed.

Abstract: Silver halide emulsions of limited iodide content, processes for the preparation of these emulsions, photographic elements incorporating these emulsions, and processes for the use of the photographic elements are disclosed. In the emulsions silver halide grains predominantly bounded by {111} crystal faces and containing insufficient iodide to direct silver salt epitaxy to selected surface sites of the grains are present. Silver salt is epitaxially located on and substantially confined to selected surface sites of the silver halide grains, this being accomplished by the use of an adsorbed site director.

Abstract: There is disclosed a silver halide light-sensitive color photographic material which comprises a support and coated thereon a light-sensitive layer containing a compound which, upon reaction with an oxidized color developing agent, is capable of releasing a diffusible development inhibitor and a negative type light-sensitive silver halide emulsion containing light-sensitive silver halide crystals essentially consisting of mono-dispersed silver halide crystals of which size distribution satisfies the following relation:S/r.ltoreq.0.15whereinS=.sqroot..SIGMA.(r-r.sub.i).sup.2 n.sub.i.sup.2 /.SIGMA.n.sub.i andr=.SIGMA.n.sub.i r.sub.i /.SIGMA.n.sub.i in which r.sub.i represents the crystal size of individual silver halide crystals and n.sub.i represents the number of crystals.The light-sensitive color photographic material of the present invention provides an image of remarkably improved sharpness.

Abstract: High speed, high quality positive or negative photographic elements comprising, in order, (1) a support, (2) a nonphotosensitive layer on said support containing a chemically bleachable, high strength tinctorial colorant, and (3) at least one photosensitive silver halide emulsion layer, characterized by the interposing of a timing layer between layers (2) and (3), and the addition of a hardener to layer (2).

Abstract: Color photothermographic articles are prepared by having the various color-forming layers separated by organic solvent soluble barrier layers insoluble in the organic solvent used to coat at least one of the adjacent color-forming layers.

Abstract: A photosensitive resin composition which comprises (1) an ethylenically unsaturated compound which can be addition polymerized to form a high molecular compound, said addition polymerizaton being initiated by a free radical and of chain-propagation, (2) a 2-polycyclic aryl-4,5-diphenylimidazolyl dimer wherein the polycyclic aryl group comprises at least two benzene rings condensed each other and (3) at least one compound selected from the group consisting of dimedone, indolacetic acid, N-naphthylglycine, S-lower alkylthioglycollic acid, 4,4'-bis[di(lower)alkylamino]benzyl, p-di(lower)alkylaminobenzoic ester, leucocrystalviolet, indoxylic acid, rhodanine, 7-di(lower)alkylaminocumarine and diarylthiourea and their derivatives, the molar ratio of the component (2) and the component (3) being from 2:1 to 1:5.

Abstract: A silver halide emulsion is disclosed comprised of thin tabular silver iodide grains of a face centered cubic crystal structure. These tabular grains have a high average aspect ratio and account for at least 50 percent of the total projected area of the silver halide grains present in the emulsion. The emulsions are useful in blue recording as well as other layers of photographic elements.

Abstract: A silver halide color photographic material is disclosed. The material has improved developing characteristics which are obtained by containing both a substantially light-insensitive silver halide and at least one specific 3-pyrazolidone compound. The substantially light-insensitive silver halide includes a halogen composition consisting of 0 to 100 percent of bromide, 0 to 2 percent of iodine and the residual percent of chlorine, a mean grain size of 0.01 to 0.3.mu., and a coverage of 5 to 500 mg/m.sup.2. The 3-pyrazolidone compound has the following general formula (I): ##STR1## wherein X represents a hydrogen atom or an acetyl group; R represents an aryl group; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen atom, an alkyl group or an aryl group, and they may be the same as or different from one another. The material can be developed at an increased speed and is not accompanied by undesirable photographic effects such as fogging.

Abstract: Amine compounds or metal-ammine complexes incorporated into developer-incorporated wash-off films stabilize against premature gelatin hardening on aging. Preferred additives are two gelatin amino acids, lysine and arginine.

Abstract: A silver halide photographic material for a photomechanical process which has an excellent reduction processing aptitude is disclosed. The material is comprised of a support having a light-sensitive silver halide emulsion layer thereon and a light-insensitive layer disposed outside the silver halide emulsion layer. The light-insensitive layer contains a hydrophilic colloidal binder coated in such an amount per unit area as to be 1.0 or more times that of a hydrophilic colloidal binder contained in the silver halide emulsion layer.

Abstract: Fast acting and ecologically advantageous compositions for the bleaching of photographically developed silver are comprised of a peroxy compound, a buffering agent, and an aminopolyacetic or thiopolyacetic acid which contains at least three carboxyl groups.