发明授权
- 专利标题: Direct positive photographic material
- 专利标题(中): 直接摄影摄影材料
-
申请号: US640447申请日: 1991-01-11
-
公开(公告)号: US5185241A公开(公告)日: 1993-02-09
- 发明人: Noriyuki Inoue
- 申请人: Noriyuki Inoue
- 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: JPX2-4914 19900112
- 主分类号: G03C1/08
- IPC分类号: G03C1/08 ; G03C1/07 ; G03C1/485
摘要:
Disclosed is a direct positive photographic material comprising a support having thereon at least one photographic emulsion layer containing previously non-fogged internal latent image-type silver halide grains, wherein the photographic emulsion layer contains at least one compound of formulae (I), (II) and (III) preferably along with at least one compound of formulae (IV), (V) and (VI), and that the internal latent image-type silver halide grains are silver bromide, silver chloride, silver iodobromide, silver chlorobromide or silver chloroiodobromide grains and contain at least one metal of manganese, copper, zinc, cadmium, rhenium, lead, bismuth, indium, thallium, zirconium, lanthanum, chromium, mercury and metals of Group VIII of the Periodic Table.M.sub.2 SO.sub.3 (I)MHSO.sub.3 (II)M.sub.2 S.sub.2 O.sub.5 (III)wherein M represents a hydrogen atom or a cation.R--SO.sub.2 S--M.sup.1 (IV)R--SO.sub.2 S--R.sup.1 (V)R--SO.sub.2 S--L.sub.m --S.O.sub.2 S--R.sup.2 (VI)wherein R, R.sup.1 and R.sup.2 which may be the same or different, each represents an aliphatic, aromatic or heterocyclic group, M.sup.1 represents a cation, L represents a divalent linking group, and m is 0 or 1. The material provides a hard direct positive image having a lowered minimum image density without lowering the maximum image density and it has a high time-dependent storage stability.
公开/授权文献
- US5942788A Solid state image sensing device 公开/授权日:1999-08-24
信息查询