Abstract: A method for generating a screened reproduction of a contone image comprises the steps of screening the contone image to obtain screened data representative for tones of the contone image and suitable for driving exposure of microdots on a radiation sensitive imaging element; exposing the microdots according to the screened data by at least one set or plurality (p) of radiation beams (b), characterized in that at a point in time (t) at least two radiation beams of the set of radiation beams impinge on a particular microdot (m) of a scanline (l). In particular is described a method for making a lithographic printing plate comprising the abovementioned steps.

Abstract: There are described novel photographic processing compositions, film units and processes for use in diffusion transfer photographic systems. More particularly, there is described a method for forming a diffusion transfer image photographic processing of diffusion transfer photographic film units in the presence of hypoxanthine and inosine. Diffusion transfer photographic systems utilizing the novel photographic element or method of the present invention exhibit substantially fewer, if any, crystals on the final image of the finished photograph post-processing.

Abstract: A method for processing a silver halide color photographic material which comprises, after color development of an exposed silver halide color photographic material containing a hydrolyzable type DIR coupler, rapidly processing the developed silver halide color photographic material with a liquid having a bleaching ability and subsequently with a liquid having a bleach-fixing ability, to thereby form a color image.In accordance with the method for processing a silver halide color photographic material, desilveration is completed in a short period of time and color photographic images having excellent color reproducibility and fastness are obtained.

Abstract: A color diffusion transfer photographic light-sensitive material comprising a support, at least one silver halide layer on the support, said emulsion layer being associated with a dye-providing compound, and an image-receiving layer on the same support as above or on another support, wherein said photographic light-sensitive material is able to provide a transferred dye image composed of a diffusible dye or its precursor released or derived from the dye-providing compound as a result of development under a strong alkaline condition in the presence of at least one meso ionic 1,2,4-triazolium-3-thiolate compound. In the present material, fog can be prevented efficiently without causing the problems of a reduction in sensitivity and a decrease in rate of development.

Abstract: Novel compounds which release thio- or selenourea moieties or derivatives thereof upon contact with aqueous alkaline compositions and are therefore useful in photographic applications. The compounds include, in addition to the thio- or selenourea moiety, a uracil blocking moiety and an anion.

Abstract: There is disclosed a diffusion transfer photographic system wherein development of an exposed photosensitive element with an aqueous alkaline processing composition is effected in the presence of a compound represented by the formula ##STR1## wherein X represents the nonmetallic atoms necessary to form a nucleus which completes a 5- or 6-membered heterocyclic moiety on said structure including substituted rings and fused rings; R is H, an alkali metal or a group which is cleavable in a photographic aqueous alkaline processing composition; and R.sub.1 is either a group which has a pKa of from about 7 to about 14 which is ionizable to an anion whereby the silver salt of the mercaptan (resulting from cleavage or ionization of --SR) is rendered more soluble in the pH range within which R.sub.1 is ionized to an anion than it is below that pH range, or a precursor of such a group.

Abstract: There are disclosed novel compounds which are represented by the formula ##STR1## wherein X represents the nonmetallic atoms necessary to form a nucleus which completes a 5- or 6-membered heterocyclic moiety, R is H, an alkali metal or a group which is cleavable in aqueous alkaline medium and Z is H, alkyl having from 1 to 10 carbon atoms, aralkyl such as benzyl or phenethyl, phenyl or substituted phenyl. The compounds are useful in photographic applications.

Abstract: Imidomethyl blocked photographic reagents are useful in photographic elements, film units and processes. The blocked photographic reagents have the structure: ##STR1## wherein: J represents ##STR2## X represents the atoms to complete a 5- or 6-membered ring or ring system; R represents hydrogen, alkyl or 1 to 4 carbon atoms or aryl of 6 to 12 carbon atoms; andPR represents the residue of an organic photographic reagent containing a heteroatom through which it is joined to the imidomethyl blocking group.

Abstract: There are described novel compounds which are represented by the formula ##STR1## wherein R is ##STR2## A is sulfur or selenium; X represents the nonmetallic atoms necessary to form a nucleus which completes a five or six membered heterocyclic moiety; R.sub.1 is H or lower alkyl; R.sub.2 is H or a hydrolyzable group; and R.sub.3 is H, alkyl or a hydrolyzable group. The compounds are useful in photographic applications and provide controlled release of a photographically useful material during processing of photographic elements with an aqueous alkaline processing composition.

Abstract: Photosensitive silver halide emulsions are provided with enhanced stability by the following sequence of steps:(a) providing sufficient stabilizer to the emulsion to stop chemical ripening but insufficient to interfere with spectral sensitization;(b) spectrally sensitizing said emulsion; and(c) adding to said emulsion a water soluble bromide salt, 1-phenyl-5-mercaptotetrazole; and a stabilizer selected from the group consisting of an hydroxy triazaindene, an amino triazaindene, an hydroxy tetrazaindene, an amino tetrazaindene, an hydroxy pentazaindene and an amino pentazaindene.

Abstract: A multicolor diffusion transfer photographic system wherein development of an exposed multilayer photsensitive element is effected in the presence of a ligand which is represented by the formula ##STR1## wherein R is hydrogen, alkyl or hydroxyalkyl, m is an integer of from 3 to 10 and n is 0 or an integer of from 1 to 3 with the proviso that the sum of m and n is not greater than 10.

Abstract: Photographic elements, assemblages and processes for color diffusion transfer photography are described wherein certain azole compounds having at least two nitrogen atoms are employed as development restrainer precursors. Preferred azole compounds include benzotriazoles, triazoles, tetrazoles, indazoles and benzimidazoles. The azole compounds have an alkali-hydrolyzable, N,N-disubstituted carbamoyl group on one of the two nitrogen atoms.

Abstract: A multicolor diffusion transfer photographic system wherein development of an exposed multilayer photosensitive element is effected in the presence of an oligomer which is represented by the formulaR.sub.1 O(CH.sub.2 CH.sub.2 O).sub.m R.sub.2wherein R.sub.1 and R.sub.2 each independently may be --CH.sub.3 or --C.sub.2 H.sub.5 and m is an integer of from 4 to 10.

Abstract: Said material contains a quinone-type compound which corresponds to one of the formulae (A) or (B) and which is capable in reduced state and under alkaline conditions of releasing a photographically useful group e.g. a dye: ##STR1## wherein: each of (Nuox).sup.1 and (Nuox).sup.2 represents an oxidized nucleophilic group,Z represents a bivalent atomic group which is electronegative,Q together with the Z group represents a releasable photographically useful group,each of R.sup.1, R.sup.2 and R.sup.3 is hydrogen, halogen, alkyl, alkoxy, or an acylamino group or R.sup.1 and R.sup.2 in adjacent positions on the ring form a ring fused with the remainder of the molecule, or R.sup.2 and R.sup.3 together are fused with the remainder of the molecule.each of R.sup.4 and R.sup.5 represents hydrogen or a hydrocarbon group.At least one of the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4 or R.sup.5 is a ballasting group X.