Abstract: A one bath type silver dye bleaching and silver bleaching solution which comprises at least a) a compound which forms a salt or a complex with silver, b) at last one acid selected from sulfamic acid, aliphatic and aromatic sulfonic acids, aliphatic and aromatic sulfinic acids, phosphoric acid and sulfuric acid, c) an organic acid having at least one carboxylic group in its molecule and d) a ferric salt (or a complex thereof with the organic acid c), in which case the solution comprises element a), b) and the complex).

Abstract: A process for making changes on photoprint film by placing a red coloring mask over spots on a film to be corrected, and with the mask being impenetrable by short wave length light. Next, photographically projecting the film so that the colored spots are not projected, and then photographically projecting another film, with the corrections thereon, and projecting it on the firstmentioned film, all so that the final film is a corrected film accomplished through the use of placing a red coloring mask to prevent projecting of portions of the film to be corrected.

Abstract: A color photographic process which comprises processing silver halide color photographic materials using a color developer containing a 2-alkyne-1-ol represented by the general formula: ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group, a hydroxyalkyl group, an aminoalkyl group, a carboxyalkyl group, or a formylalkyl group, and R.sub.1 and R.sub.2 may be the same or different.By using the above compound in a color photographic process, the speed of color development can be effectively promoted without increasing fog, and, further, the stability of the color developer is improved.

Abstract: A monitoring technique for use in the regeneration of spent bleach-fix solution containing silver ion and ferrous ion resulting from photograhic processing. Regeneration comprises first treating the spent solution with elemental iron to reduce and chemically replace silver ion, and thereafter dispersing an oxidizing agent throughout the silver-free solution to convert ferrous ion to ferric ion. Exhaustion of the elemental iron in the silver replacement step or insufficient oxidation in the ferrous-ferric conversion step are electrochemically detected by comparison of the half-cell potential of a reference solution drawn from the bleach-fix solution in a region of the regenerative cycle where the solution is substantially insensitive to the exhaustion of the elemental iron and insufficient oxidation. Further provision of a continuously flushing reference solution provides longterm accuracy of the electrochemical monitoring method.

Abstract: Merocyanine dyes comprising 2-(heterocyclylcarbonylmethylene)thiazolines and selenazolines and 2-[di(heterocyclylcarbonyl)methylene]thiazolines and selenazolines are efficient sensitizers for light-sensitive unsaturated materials such as unsaturated vesiculators which release a gas upon exposure to radiation, photocrosslinkable unsaturated polymers, and azides such as photocrosslinkable polymeric azides used in photomechanical resists and lithographic plates.

Abstract: In an image intensification which comprises reacting a photographic element comprising a support having provided thereon at least one silver halide emulsion layer with at least one highly active intensifying agent comprising halogenous acids and peroxides in the presence of a reducing agent, and, if necessary or desired, a color former, a method for forming images which comprises treating the photographic element with an intensifying bath comprising1. at least one nitrogen-containing heterocyclic compound possessing an anti-fogging effect and having no mercapto group;2. bromide ions in an amount of 1 .times. 10.sup.-4 gram ion/liter or more; and3. the highly active intensifying agent in an amount of 0.25 mol/liter or more.

Abstract: Photosensitive silver halide emulsions are prepared by the precipitation of silver halide grains from silver and halide ions generated by electrolysis.

Abstract: A method for producing a heat resistant, light resistant, chemically resistant and abrasion resistant noble metal image comprising forming a silver image on a photographic material which comprises a substrate having thereon at least one silver halide emulsion layer, either directly or on at least one subbing layer on the substrate, by exposing and developing the photographic material, converting the silver image into a noble metal image by contacting the silver image with a compound containing a noble metal having an ionization tendency smaller than the ionization tendency of silver, and then heating the photographic material in an oxygen-containing gas to thermally decompose and substantially remove the organic components on the substrate.

Abstract: Sludge formation is reduced in the fixing and washing station of an automatic processing apparatus for rapid processing exposed photographic elements, by addition to the fixing and/or washing medium of a compound of the formula:R(OCH.sub.2 CH.sub.2).sub.n OHwherein n is at least 12 and R is an aliphatic group of 6 to 24 carbon atoms or an alkylaryl group.

Abstract: A process for stabilizing a color developing solution which comprises adding one or more hydroxamic acid compounds represented by the following formula to the color developing solution: ##STR1## wherein X represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an unsubstituted or substituted aryl group having 6 to 10 carbon atoms, an amino group, an alkylamino group having 1 to 4 carbon atoms or an arylamino group.

Abstract: A film for use in Lippmann photography is formed with a photosensitive emulsion on a transparent base and a separable reflective layer adhering to the emulsion. This separable layer may be a reflective coating carried by a soluble coating, or both soluble and insoluble coatings, or may be a reflective coating of a normally liquid metal which adheres to the emulsion and is readily separated by solvent or reactant.

Abstract: Oxazolinone-2 derivatives having a releasable mercapto group in their 5-position are provided as development-inhibitor-releasing thioether compounds for use in color photographic material having a high reactivity on chromogenic development of color photographic material, and are very easy to prepare.

Abstract: A photographic material suited for forming color radiographs, which material comprises on both sides of a film support at least one silver halide emulsion layer incorporating at least one color coupler that is capable of forming with an oxidized p-phenylenediamine type color developing agent a dye, said color coupler(s) being present in an amount sufficient to allow by exposure and color development with a p-phenylene diamine type developing agent to obtain a spectral density in the material of at least 2.0 with respect to visual filter light, the aggregate amount of silver halide in said material being equivalent to an amount of silver nitrate in the range of 5 g to 1.3 g of silver nitrate per sq.m, the silver halide grain size distribution being such that at least 50% by weight of the silver halide at both sides of the support has a mean grain size smaller than 0.55 .mu.m.

Abstract: A light-sensitive silver halide photographic material containing a new development inhibitor releasing compound. The said compound has no hydrogen atom at the carbon atom which is adjacent to the carbonyl group and capable of coupling to an oxidation product of a color developing agent on the development.

Abstract: Process for preparation of transparencies from a solid phase dispersion of photoconductive particles in an insulating binder matrix. In this process, a dispersion is initially formed from an insulating polymer resin and an organoselenium compound capable of undergoing selective decomposition in response to an appropriate stimulus, whereby elemental selenium is extruded from said organoselenium compound and deposited within the polymeric resin. As a result of this deposition of elemental selenium within the insulating layer, the layer is rendered photoresponsive and can be used in conventional electrophotographic processes. Subsequent to the development and fusion of a developer image on this imaging member, the extrusion/deposition reaction can be reversed and the selenium deposit erased thus leaving a toner image fused to a substantially transparent polymeric film.

Abstract: A novel photographic imaging element which comprises a support, at least one photosensitive silver halide layer, and at least one layer of colorant (e.g., colloidal silver), bleachable with an oxidizing bleach in accordance with images formed in the silver halide layer. Images are formed with such elements by imagewise exposure of the photosensitive silver halide layer and conventional development of the image therein followed by imagewise bleaching the colorant layer with an oxidizing bleach to reduce the optical density in areas of the colorant layer to form an image thereon corresponding to the developed image in the silver halide layer. The combined images in the photosensitive silver halide layer and the imagewise bleached colorant layer form a composite, high quality image having high density and efficiency in the use of silver, providing a substantial reduction in silver halide coating weight over conventional, all-silver halide elements.

Abstract: A color photographic material comprising a support having photographic layers thereon, with at least one of the photographic layers containing a non-diffusible colored coupler which releases, on coupling reaction with the oxidation product of a primary aromatic amino developing agent at development, a diffusible dye capable of being removed from the photographic layer, the non-diffusible colored coupler being represented by general formula (I):a--o--so.sub.2 --r--b (i)wherein R represents an alkylene group having 1 to 10 carbon atoms; A represents an image forming coupler residue containing a phenol nucleus or a naphthol nucleus, and wherein the --O--SO.sub.2 --R--B group is bonded to the coupling position of the coupler residue and the group can be released upon oxidative coupling with an aromatic primary amine developing agent to form a dye; and B represents a residue containing a chromophore.

Abstract: An aqueous photographic processing solution useful as a photographic developer bath and as a replenisher therefor, consisting essentially of, per liter:______________________________________ A 1-phenyl-3-pyrazolidone photographic developer 0.8 to 1.8g Hydroquinone or a derivative thereof 15 to 35g Bromide ion 0 to 4g Organic anti-foggant and film speed restrainer 7 to 26 mmol Alkaline material and buffer to provide a pH at 25.degree. C of 10.0 + 0.8 - 0.5.

Abstract: Photoconductive composition comprising an insulating polymeric matrix and a compound of the formula ##STR1## wherein R is --H or --CN;R', r", r'" and R.sup.iv are independently selected from an aliphatic hydrocarbon radical having from about 1-10 carbon atoms; phenyl; or substituted phenyl wherein said substituents are capable of releasing electrons to relatively electron deficient centers within the compound; amino; diarylamino; dialkylamino or alkoxy; n can range from 0 up to the potential number of positions of substitution on the aromatic ring system.These compositions have good spectral response in the visible region of the electromagnetic spectrum and are suitable for use in electrostatographic imaging members and methods.

Abstract: A hardening fiber composition for use in the processing of photographic silver halide elements is described which contains a 1-hydroxy-alkylidene diphosphonic acid the alkylidene group of which contains from 2 to 5 C-atoms.