发明授权
US4956263A Silver halide photographic material containing a compound capable of
releasing a dye
失效
含有能够释放染料的化合物的卤化银照相材料
- 专利标题: Silver halide photographic material containing a compound capable of releasing a dye
- 专利标题(中): 含有能够释放染料的化合物的卤化银照相材料
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申请号: US238796申请日: 1988-08-31
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公开(公告)号: US4956263A公开(公告)日: 1990-09-11
- 发明人: Kunio Ishigaki , Kazunobu Katoh , Nobuaki Inoue , Hisashi Okada , Toshinao Ukai , Morio Yagihara , Yoshihiro Takagi , Masakazu Yoneyama
- 申请人: Kunio Ishigaki , Kazunobu Katoh , Nobuaki Inoue , Hisashi Okada , Toshinao Ukai , Morio Yagihara , Yoshihiro Takagi , Masakazu Yoneyama
- 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: JPX62-218648 19870901; JPX62-221283 19870904; JPX62-221285 19870904; JPX62-320701 19871218; JPX63-7856 19880118
- 主分类号: G03C1/06
- IPC分类号: G03C1/06 ; G03C1/83
摘要:
A silver halide photographic material capable of providing very high contrast image and having improved safelight safety is described, which comprises a support having thereon at least one silver halide emulsion layer, and containing in the silver halide emulsion layer or another hydrophilic colloid layer (i) a compound represented by formula (I) ##STR1## wherein PWR represents a group capable of releasing ##STR2## upon being reduced; Time represents a group capable of releasing LA after being released from PWR, t is 0 or 1; and LA represents a group having an absorption maximum in the wavelength region longer than 310 nm, (ii) a hydrazine derivative, and (iii) at least one compound represented by formulae (IX) and (X) ##STR3## wherein R.sup.91, R.sup.92, R.sup.93, and R.sup.94, which may be the same or different, each represents hydrogen, an alkyl group, an aryl group, an amino group, a hydroxyl group, an alkoxy group, an alkylthio group, a carbamoyl group, a halogen atom, a cyano group, a carboxyl group, an alkoxycarbonyl group or a heterocyclic group and R.sup.91 and R.sup.92 or R.sup.92 and R.sup.93 may be linked to form a 5- or 6-membered ring; provided that at least one of R.sup.91 and R.sup.93 represents a hydroxyl group.
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