A silver halide photographic material is disclosed, comprising a support having provided thereon at least one silver halide emulsion layer, wherein the silver halide emulsion layer contains, in the dispersion medium phase of the emulsion, one or more kinds of inorganic fine particles having a refractive index the total weight of the fine particles contained in the unit volume of the dispersion medium phase is from 1.0 to 95 wt %, the dispersion medium phase containing the fine particles is substantially transparent to the photosensitive peak wavelength light of the emulsion layer, and the photographic material is exposed and processed in the development process comprising at least a developing step and a fixing step.

Silver halide photographic material.

A lithographic printing plate precursor includes an image-recording layer and a protective layer containing a stratiform compound, wherein at least one of the image-recording layer and the protective layer contains a polymer containing as a repeating unit, a structural unit having an ammonium structure.

Lithographic printing plate precursor and lithographic printing method

Anti-reflective coating materials for deep ultraviolet photolithography include one or more organic light-absorbing compounds incorporated into spin-on-glass materials. Suitable absorbing compounds are strongly absorbing over wavelength ranges around wavelengths such as 365 nm, 248 nm, and 193 nm that may be used in photolithography. A method of making absorbing spin-on-glass materials includes combining one or more organic absorbing compounds with alkoxysilane or halosilane reactants during synthesis of the spin-on-glass materials.

Spin-on-glass anti-reflective coatings for photolithography

Light-sensitive sheet material is provided comprising a base sheet bearing a thin coating of a diazo resin over which is provided a photopolymerizable layer Upon exposure of the sheet material to actinic radiation, the image areas of the photopolymerizable layer as well as corresponding areas of diazo resin are insolubilized Preferred sheet material is useful in lithographic printing

Photopolymerizable sheet material with diazo resin layer

A heat-sensitive lithographic printing plate precursor which comprises a substrate having thereon an anodic oxidation layer, with the printing plate precursor comprising a hydrophilic layer containing at least one kind of fine particles selected from the group consisting of heat-fusible hydrophobic thermoplastic fine particles, finely divided polymers having thermally reactive functional groups and microcapsules in which compounds having heat-reactive functional groups are encapsulated, and with the anodic oxidation layer having a surface over which micropores having an average pore size of 6 to 40 nm are uniformly distributed.

Heat-sensitive lithographic printing plate precursor

Lithographic printing plate

A condensation copolymer is disclosed which is capable of being crosslinked by exposure to radiation and which, prior to exposure, is capable of being transported in an aqueous alcoholic alkaline developer. The condensation copolymer has first dicarboxylic acid derived repeating units containing non-aromatic ethylenic unsaturation capable of providing crosslinking sites and second aromatic dicarboxylic acid derived repeating units containing disulfonamido units containing monovalent cations as amido nitrogen atom substituents. The photographic elements formed from the condensation copolymer are particularly useful as lithographic plates.

Lithographic plates having radiation sensitive elements developable with aqueous alcohol

Polyalkylene glycols end-capped with o-quinone diazide groups are a novel class of light-sensitive polymers which range from viscous liquid to waxy materials. The polymers can be used alone or in conjunction with other light-sensitive and nonlightsensitive polymers to prepare light-sensitive coating compositions. Preparation of photoresists and printing plates using polymer compositions of this invention is described.

Light-sensitive quinone diazide polymers and polymer compositions

Nonsilver, light-sensitive photographic elements

Pyrylium and thiapyrylium salts of the formula wherein R1, R2, and R3 are each a C1-15 aliphatic or an aryl group, e.g. alkyl, alkoxy, styryl, phenyl, 4-biphenyl, alkoxy-phenyl or -styryl, halophenyl, azidophenyl, nitrophenyl or aminophenyl or -styryl, X is O or S, and Y is an anion, e.g. perchlorate, fluoborate, sulphate or chloride are used as photosensitizers (see Divisions G2 and H1). They may be prepared (a) by oxidative ring closure of 1,5-diketones or dialdehydes, e.g. using antimony pentachloride, phosphorus oxychloride or acetic anhydride plus perchloric acid; (b) from alpha-beta unsaturated methyl ketones, e.g. by reaction with the mixed anhydride of acetic with perchloric acid; (c) reacting olefines with acid chlorides, e.g. in the presence of aluminium chloride; (d) reacting an aldehyde with 2 equivalents of a methyl ketone in the presence of boron trifluoride etherate; (e) as in (d) but using one equivalent of nitrobenzene and three of the ketone; or (f) reacting benzaldiacetophenone with boron trifluoride etherate. 65 such compounds are exemplified with preparative details or references which are summarized in Tables VIII and IX. The pyrylium may be converted to thiopyrilium salts by reaction with sodium sulphide.

Light-sensitive layers containing pyrylium and thiapyrylium salts

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