发明授权
- 专利标题: Method for forming a high contrast negative image
- 专利标题(中): 形成高对比度负像的方法
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申请号: US268126申请日: 1988-11-07
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公开(公告)号: US4965169A公开(公告)日: 1990-10-23
- 发明人: Mitsunori Hirano , Masato Hirano , Morio Yagihara , Hisashi Okada
- 申请人: Mitsunori Hirano , Masato Hirano , Morio Yagihara , Hisashi Okada
- 申请人地址: JPX Kanagawa
- 专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人地址: JPX Kanagawa
- 优先权: JPX62-280466 19871106
- 主分类号: G03C1/33
- IPC分类号: G03C1/33 ; G03C1/06 ; G03C5/305
摘要:
A method for forming a high contrast negative image comprising the steps of:(a) imagewise exposing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, said emulsion layer or other hydrophilic colloid layer containing at least one hydrazine derivative; and(b) developing said exposed silver halide photographic material in an developer solution containing:(1) a dihydroxybenzene developing agent;(2) at least one auxiliary developing agent selected from a 1-phenyl-3-pyrazolidone auxiliary developing agent and a p-aminophenol auxiliary developing agent;(3) at least 0.3 mol per liter of a sulfite; and(4) at least one compound represented by formula (I): ##STR1## wherein Y represents a group capable of adsorbing to silver halide; A represents a divalent linking group; B represents an amino group, an ammonium group or a nitrogen containing heterocyclic group; m is 1, 2 or 3; and n is 0 or 1; to form a high contrast negative image.