Fuji Photo Film Company, Limited

Naomi Saeki

Nobuaki Inoue

Yuji Mihara

Morio Yagihara

Shigeru Ohno

Hiroyuki Mifune

Keiichi Adachi

Eiichi Okutsu

Kunio Ishigaki

Toshinao Ukai

Toshiro Takahashi

Yoshiharu Fuseya

Masahiro Okada

Yoshitaka Akimura

Shingo Nishiyama

Yutaka Oka

Shigenori Moriuchi

Taiji Hashimura

A silver halide photographic material comprising a support having thereon at least one light-sensitive layer comprising a silver halide emulsion sensitized by an infrared sensitization dye, wherein the silver halide in the silver halide emulsion contains at least 90 mol % of silver chloride and is constituted by monodisperse grains having a coefficient of variation of not more than 20%; and an image formation method using the above-described silver halide photographic photosensitive material, comprising the steps of imagewise exposing the photographic material and developing the said material in a developing solution containing at least 0.15 mol/l of sulfurous acid ions and a compound having a silver halide-adsorption accelerating group.

Silver halide photographic material and method of forming images using

A silver halide photographic material for reversal processing is disclosed, which comprises a support having provided thereon at least one hydrophilic colloidal layer, the hydrophilic colloidal layer being a light-sensitive silver halide emulsion layer, silver halide grains of the silver halide emulsion being of a core/shell structure comprising a core portion substantially composed of silver bromide and said shell portion substantially composed of silver bromoiodide.

Silver halide photographic material for reversal processing

A silver halide photographic material is described, comprising a support having formed thereon at least one silver halide emulsion layer and at least one light-insensitive hydrophilic colloid layer, wherein at least one of layers consisting of said at least one silver halide emulsion layer and said at least one light-insensitive hydrophilic colloid layer contains a hydrazine derivative, and wherein at least one of said at least one light-insensitive hydrophilic colloid layer that is formed on the uppermost silver halide emulsion layer contains a dye.

Silver halide photographic element containing anhydazine compound and

A direct positive silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer comprising a prefogged direct-positive silver halide emulsion, preferably one having a chloride content of at least 70 mol%, said emulsion layer or a hydrophilic colloid layer adjacent to said emulsion layer containing at least one compound represented by the following general formula (I) and, optionally, a specified organic desensitizer, ##STR1## wherein Z.sub.1 represents a group of nonmetallic atoms necessary to complete a nitrogen-containing hetero ring; T represents an alkyl group, a cycloalkyl group, an alkenyl group, a halogen atom, a cyano group, a trifluoromethyl group, an alkoxy group, an aryloxy group, a hydroxy group, an alkoxycarbonyl group, a carboxyl group, a carbamoyl group, a sulfamoyl group, an aryl group, an acylamino group, a sulfonamido group, a sulfo group, or a benzo-condensed ring, each of which is or is not substituted; q represents 1, 2, or 3; and r represents 0, 1 or 2.

Direct positive silver halide photographic material

A lithographic photosensitive material which comprises a support having thereon at least one silver halide emulsion layer and that, contains as a lithographic development accelerating agent a compound represented by the following general formula (I) in its silver halide emulsion layer or another hydrophilic colloidal layer: ##STR1## wherein R.sub.1 to R.sub.5 may be the same or different, and they each represent hydrogen, a halogen atom, an alkyl group, an alkoxy group, an aryl group, ##STR2## (wherein R.sub.6 and R.sub.7 each represents hydrogen or an alkyl group, or they may combine with each other to form a 5- or 6-membered nitrogen containing saturated hetero ring), --NH--CO--R.sub.8 or --NHSO.sub.2 --R.sub.9 (wherein R.sub.8 and R.sub.9 each represents an alkyl group, an aryl group or an aralkyl group), or R.sub.3 and R.sub.4, or R.sub.4 and R.sub.5 may combine with each other to form a benzene ring and that, it is necessary to said compound that at least one of substituents R.sub.1, R.sub.3 and R.sub.5 represents --NHSO.sub.2 --R.sub.9, or the benzene ring formed by combining R.sub.3 and R.sub.4, or by combining R.sub.4 with R.sub.5 is substituted with at least one --NHSO.sub.2 --R.sub.9 group.

Lithographic photosensitive material

A silver halide photographic light-sensitive material and a developing process used in connection with that material are disclosed. The material is comprised of a support having thereon a silver halide emulsion layer containing a silver halide emulsion in which at least 80 mole % of the whole silver halide is composed of silver chloride, the mean grain size thereof is less than 0.4 .mu.m, and which contains more than 1.times.10.sup.-6 mole of a water-soluble rhodium salt per mole of silver at an optional period before finishing the first ripening in the production step for the silver halide emulsion. The material also contains 1.times.10.sup.-5 to 1.times.10.sup.-2 mole of polyalkylene oxide having a molecular weight of at least 600 or a derivative thereof per mole of silver. The process involves imagewise exposing the material and processing it in a developer containing 0.05 to 0.5 mole/liter of a dihydroxybenzene series developing agent, 0 to 0.05 g/liter of an auxiliary developing agent, at least 0.25 mole/liter of a free sulfite ion, at least 20 mg/liter of 5- or 6-nitroindazole, and an alkali of an amount sufficient for keeping the pH of the developer higher than 10.5. The material and processing are capable of providing good letter image quality in a short developing time.

Silver halide photographic materials and process of developing them

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Kanagawa, Japan

Naomi Saeki