Abstract: A silver salt diffusion transfer photographic material is described, having a silver halide emulsion layer comprising silver halide grains wherein at least 80 percent of the total number of said silver halide grains are accounted for by coarse silver halide grains larger than about 0.8 .mu.m in diameter and fine silver halide grains of from about 0.1 .mu.m to about 0.4 .mu.m in diameter, and said fine silver halide grains constitute from 0.1 to 5 percent of the total weight of silver halide grains and from 10 to 90 percent of the total number of silver halide grains.

Abstract: A silver salt diffusion transfer photographic material is described, having a silver halide emulsion layer comprising silver halide grains wherein at least 80 percent of the total number of said silver halide grains are accounted for by coarse silver halide grains larger than about 0.6 .mu.m in diameter and fine silver halide grains smaller than about 0.4 .mu.m in diameter, and said fine silver halide grains constitute at least 10 percent of the total number of silver halide grains.

Abstract: This invention provides a high sensitivity photosensitive element used for a silver salt diffusion transfer process and capable of producing an image having fine graininess and good quality. The photosensitive element comprises a photosensitive emulsion layer containing silver halide grains having small grain size (S layer) and another photosensitive emulsion layer containing silver halide grains having large grain size (L layer), the S layer being positioned toward the exposure side of the L layer, and the amount of silver halide contained in the S layer, the amount thereof contained in the L layer and the total amount thereof being 60-5 wt %, 40-95 wt %, and no less than 80 wt %, respectively, relative to the total amount of silver halide contained in the photosensitive element.

Abstract: A process for forming a polymeric image in a silver halide sensor type polymerizable light-sensitive material having a silver halide photographic emulsion layer is disclosed. The process is comprised of reducing a development nucleus-containing silver halide using at least one phenol compound and at least one hydrazine compound in the presence of at least one non-gaseous ethylenically unsaturated compound capable of undergoing addition polymerization to selectively polymerize the non-gaseous ethylenically unsaturated compound in an area where the development nucleus-containing silver halide is present. The phenol compound is represented by the following general formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.2 ', R.sub.3 and R.sub.3 ' are defined within the disclosure. The hydrazine compound is represented by the following general formula (II): ##STR2## wherein R.sub.4, R.sub.5 and R.sub.6 are defined within the disclosure.

Abstract: A silver halide photographic emulsion is disclosed. The emulsion includes a silver halide emulsion which has dispersed therein at least three types of sensitizing dyes. The emulsion includes at least one dye represented by the formula (I), at least one dye represented by the formula (II) and at least one dye represented by the formula (III). Each of the structural formulae and their substituents are defined within the specification. The resulting silver halide photographic emulsion shows a small decrease in the inherent sensitivity of the silver halide due to the sensitizing dye used.

Abstract: A silver halide sensor type polymerizable light-sensitive material is disclosed. The material is comprised of a support having a silver halide photographic emulsion layer and a polymerizing layer adjacent to the emulsion layer. The polymerizing layer contains a nongaseous ethylenically unsaturated compound capable of undergoing addition polymerization upon reduction of the silver halide with a reducing compound. The material is capable of producing printing plates having good inking property and good printing durability. The material maintains the sensitivity and high resolving power of a silver halide photographic light-sensitive material.

Abstract: In a process for forming an image by diffusion transfer, this process for forming an image comprises performing the diffusion transfer by using a hydroxylamine represented by the formula: ##STR1## as a developing agent, and using a cyclic imide as a silver halide solvent in the presence of a 1-aryl-3-pyrazolidinone compound represented by the formula: ##STR2##

Abstract: A memory stores values representing distances from a predetermined reference position to positions corresponding to a plurality of selectable reduction/magnification factors. Upon the selection of a desired reduction/magnification factor, the current and desired positional values, both referenced to the predetermined reference position, are compared to obtain a signal representing the distance and direction which the optical system must be moved.

Abstract: A silver halide photographic light-sensitive material containing at least one compound represented by the general formula (I): ##STR1## is disclosed. The compound of the invention has good stability over time. The material has improved developability and makes it possible to carry out simple and rapid processing. The material has good resistance with respect to fogging, stains and desensitization.

Abstract: A silver halide photographic light-sensitive material is described containing a compound comprising at least one unsaturated group and at least one betaine group in at least one layer thereof.The photographic light-sensitive material has a high sensitivity without being accompanied by an undesirable increase in the formation of fog.

Abstract: A lith-type silver halide photographic material having high sensitivity and providing good dot quality images comprising a support having coated thereon a silver halide emulsion containing a sensitizing dye of dimethine merocyanine type represented by formula (I) and a sensitizing dye represented by formula (II): ##STR1## wherein R.sub.1 represents a sulfoalkyl group, a carboxyalkyl group, a sulfoaralkyl group, or a carboxyaralkyl group; the alkyl moiety of each alkyl group contains up to 4 carbon atoms; R.sub.2 represents a substituted or unsubstituted alkyl group or an aryl group; R.sub.3 represents --(CH.sub.2).sub.n.sbsb.1 CONH(CH.sub.2).sub.m.sbsb.1 OH or --(CH.sub.2).sub.n.sbsb.2 O(CH.sub.2).sub.m.sbsb.2 OH (wherein m.sub.1, m.sub.2, n.sub.1, and n.sub.2 each is 1 to 7; m.sub.1 +n.sub.1 and m.sub.2 +n.sub.

Abstract: A silver halide photographic emulsion which comprises at least one compound represented by the formula (I): ##STR1## where Z represents an atomic group necessary to complete an oxazole nucleus, a benzoxazole nucleus or a naphthoxazole nucleus, R.sub.1 represents a substituted or unsubstituted alkyl group, R.sub.2 represents an alkoxycarbonylalkyl group, a hydroxyalkyl group, a hydroxyalkoxyalkyl group, a carbamoylalkyl group, a hydroxyphenyl group or a hydroxyalkylphenyl group, and R.sub.3 and R.sub.4 which may be the same or different each represents a hydrogen atom, an alkyl group, an alkoxy group, a chlorine atom or a carboxyl group, and a lithographic silver halide material containing the same.

Abstract: A lithographic photosensitive material, suitable for exposure with light from a neon-helium laser, comprising a support having thereon a silver halide emulsion layer containing at least one sensitizing dye represented by the following general formula (I): ##STR1## wherein Z and Z.sub.1, which may be the same or different, each represents the non-metal atoms necessary for completing a 5-membered or 6-membered nitrogen-containing heterocyclic nucleus; R and R.sub.1, which may be the same or different, each represents an alkyl group or an aryl group; Q and Q.sub.1 together represent the non-metal atoms necessary for completing a 4-thiazolidinone, 5-thiazolidinone, or 4-imidazolidinone nucleus; L, L.sub.1 and L.sub.2 each represents a methine group; n.sub.1 and n.sub.

Abstract: An image forming method comprising development processing a silver halide photographic material in the presence of at least one block copolymer represented by the following general formula (I):y[(ch.sub.2 ch.sub.2 ch.sub.2 ch.sub.2 o).sub.m --(CH.sub.2 CH.sub.2 O).sub.n --R].sub.x (I)and/or the general formula (II):ho(ch.sub.2 ch.sub.2 o).sub.a (CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 O).sub.b (CH.sub.2 CH.sub.2 O).sub.c H (II)wherein Y represents an organic residue of x valence; R represents a hydrogen atom or an alkyl group containing 1 to 18 carbon atoms; m is an integer of from 5 to 50; n is an integer of from 10 to 100; b is an integer of from 8 to 50; a + e ranges from 5 to 100; and the polyoxyethylene moieties therein comprise about 10 to about 70% by weight of the total weight of the compound; and x represents an integer of from 1 to 3.