发明名称 Direct positive image-forming process
摘要 The present invention relates to a process for forming a direct positive color image comprising (a) imagewise exposing a direct positive photosensitive silver halide color photographic material to light to yield an imagewise exposed material, said photographic material having a support and at least one silver halide emulsion layer thereon, said emulsion layer containing a coupler and internal latent image type silver halide crystals whose surfaces have not been fogged prior to said imagewise exposure, and (b) uniformly exposing to light the entire surface of said imagewise exposed photographic material before or during a development step and in the presence of a substance of Formula IV, a compound of formula I and a color-developing agent consisting of aromatic primary amino compounds selected from the group consisting of N-methyl-aminophenol, 4-amino-3-methyl-N-ethyl-N-(-methanesulfonamidoethyl) aniline,4-amino-3-methyl-N-ethyl-N-(-hydroxyethyl) aniline, 4-amino-3-methyl-N, N-diethyl-p-phenylenediamine, and 4-amino-3-methyl-N-ethyl-N- -methoxyethyl-p-phenylenediamine; wherein the oxidized products thereof form a coupling reaction with said couplers to produce dyes, <IMAGE> I wherein R1 is selected from hydrogen, alkyls of 1 to 4 carbon atoms which are substituted or unsubstituted, and aryls which are substituted or unsubstituted; R2-R5 are individually selected from the same group as R1 and hydroxyl; <IMAGE> IV wherein R14 and R15 are individually selected from hydrogen, alkyls having 1 to 4 carbon atoms which may be substituted or unsubstituted, aryl groups which may be substituted or unsubstituted and non-metal atoms necessary for linking R14 and R15 in such a manner as to create a 5 or 6 membered ring, and R16 is selected from hydrogen, alkyls having 1 to 4 carbon atoms which may be substituted or unsubstituted, and aryl groups which may be substituted, and wherein said exposed photographic material is processed in a prebath or a color developer containing 10 mg/1 to 10 g/l of said formula [I] compound.
申请公布号 US4840879(A) 申请公布日期 1989.06.20
申请号 US19880153519 申请日期 1988.01.29
申请人 KONISHIROKU PHOTO INDUSTRY CO., LTD. 发明人 KAMITAKAHARA, ATUSHI;OGI, KEIJI
分类号 G03C1/485;G03C5/50;G03C7/392 主分类号 G03C1/485
代理机构 代理人
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