Direct positive image forming method

作者: Morio Fuji Photo Film Co. Ltd. Yagihara , Noriyuki Fuji Photo Film Co. Ltd. Inoue

DOI:

关键词: ChemistryHydrogen atomDivalentAcyl groupAlkoxy groupMedicinal chemistryArylAlkylSulfonylStereochemistryGroup (periodic table)

摘要: A direct positive image forming method compris­ ing development processing an imagewise exposed positive photographic light-sensitive material which comprises a support having thereon at least one layer containing internal latent type silver halide grains not been previously fogged after fogging treatment or while treatment, wherein the fogging treatment is conducted in presence of compound represented by following general formula (I): wherein A₁ and A₂ both represent hydrogen atom of represents other represents sulfonyl group acyl group; G₁ carbonyl group, sulfoxy group, or iminomethylene L₁ divalent linkage X₁ -O- (wherein R₄ atom, alkyl group aryl group); Y₁ and R₂ each aliphatic aromatic heterocyclic OR₅ -NR₅R₆ (wherein R₅ heterocyclic R₆ an group); R₃ alkoxy aralkyl aryloxy amino group. In accordance with present invention images high maximum image density low minimum being stable even when preserved under temperature high humidity conditions.

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