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    • 24. 发明授权
    • Direct positive photographic materials and a method of forming direct
positive images
    • 直接的正性照相材料和形成直接正像的方法
    • US4948712A
    • 1990-08-14
    • US184552
    • 1988-06-07
    • Noriyuki InoueTatsuo HekiHidetoshi KobayashiNaoyasu DeguchiShigeo Hirano
    • Noriyuki InoueTatsuo HekiHidetoshi KobayashiNaoyasu DeguchiShigeo Hirano
    • G03C7/30
    • G03C7/3022G03C2200/20G03C7/3029Y10S430/156
    • The invention provides (1) direct positive photographic photosensitive materials in which at least one type of FR compound which releases fogging agent or development accelerator or a precursor thereof in accordance with the amount of silver developed when the silver halide is being developed is included in a direct positive photographic material comprising at least one layer of non-pre-fogged internal latent image type silver halide emulsion on a support, and (2) a method of forming direct positive images of which the distinguishing features are that in a method for the formation of direct positive images in which a direct positive photographic photosensitive material comprising at least one layer of non-pre-fogged internal latent image forming silver halide emulsion on a support is processed, after image exposure, in a surface developer, at least one type of FR compound which releases fogging agent or development accelerator or precursors thereof is included in the said photographic mateiral, and that the said photosensitive material is subjected to a fogging process and to a development process during and/or after the said fogging process.It is possible by means of this invention to obtain direct positive photographic materials which have excellent stability with respect to the passage of time and especially good stability with respect to the passage of time under conditions of high temperature and high humidity.Moreover, it is possible to obtain direct positive photographic materials and a method of forming direct positive images which have a high maximum image density and a high resolving power.Moreover, it is possible to obtain direct positive photographic materials and a method of forming direct positive images with which direct positive images which have a satisfactorily high color density can be obtained, even on processing in highly stable developers of low pH.
    • 25. 发明授权
    • Silver halide photographic material containing a compound having an
oxidation-reduction moiety and timing group
    • 卤化银照相材料含有具有氧化还原部分和时间基团的化合物
    • US4791049A
    • 1988-12-13
    • US41570
    • 1987-04-23
    • Tetsuro KojimaShigeo HiranoHideo Usui
    • Tetsuro KojimaShigeo HiranoHideo Usui
    • G03C7/26G03C7/305G03C7/392G03C1/08G03C1/46G03C7/32
    • G03C7/30552Y10S430/156Y10S430/158Y10S430/16Y10S430/161
    • A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide photographic material contains at least one compound represented by the following general formula (I):A--Time).sub.t X (I)wherein A represents an oxidation reduction moiety comprising an atomic group which does not enable --Time).sub.t X to be released until the oxidation reduction moiety is oxidized during photographic development processing; Time represents a timing group which is connected to A through a sulfur atom, a nitrogen atom or an oxygen atom; t represents an integer of 0 or 1; and X represents a group represented by the following general formula (II): ##STR1## wherein R represents a straight chain or branched chain alkylene group, a straight chain or branched chain alkenylene group, a straight chain or branched chain aralkylene group or an arylene group; Z represents a polar substituent; Y represents ##STR2## R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 each represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkenyl group or a substituted or unsubstituted aralkyl group; and n represents an integer of 0 or 1. The silver halide photographic material exhibits a large interimage effect without deterioration of other photographic properties and thus provides photographic images excellent in sharpness and graininess.
    • 一种卤化银照相材料,包括其上具有至少一个卤化银乳剂层的载体,其中所述卤化银照相材料含有至少一种由以下通式(I)表示的化合物:A-Time)tX(I)其中A表示 包含原子团的氧化还原部分,其不能使-Time)tX释放直到氧化还原部分在照相显影处理过程中被氧化; 时间表示通过硫原子,氮原子或氧原子与A连接的时基; t表示0或1的整数; X表示由下列通式(II)表示的基团:其中R表示直链或支链亚烷基,直链或支链亚烯基,直链或支链亚芳基 或亚芳基; Z表示极性取代基; Y表示R 1,R 2,R 3,R 4,R 5,R 6,R 7和R 8各自表示氢原子,取代或未取代的烷基,取代或未取代的芳基,取代或未取代的烯基 基团或取代或未取代的芳烷基; 并且n表示0或1的整数。卤化银照相材料表现出大的图像效果,而不会降低其它照相性能,因此提供了清晰度和颗粒度优异的照相图像。
    • 29. 发明授权
    • Process for processing silver halide photographic material
    • 卤化银照相材料的处理方法
    • US4738918A
    • 1988-04-19
    • US907335
    • 1986-09-15
    • Shoji IshiguroHiroyuki MifuneShigeo HiranoNobuyuki Iwasaki
    • Shoji IshiguroHiroyuki MifuneShigeo HiranoNobuyuki Iwasaki
    • G03C7/30G03C1/10G03C5/29G03C5/305G03C7/392G03C5/24
    • G03C5/305G03C1/10G03C7/3924
    • A process for processing silver halide photographic material is disclosed, which comprises development-processing a silver halide photographic material in the presence of a compound represented by formula (I) or a salt thereof with an inorganic or organic acid: ##STR1## wherein Z represents an atomic group of carbon atoms, nitrogen atoms, or a combination thereof forming a 5-, 6-, or 7-membered unsaturated heterocyclic ring, said unsaturated heterocyclic ring being optionally fused with a monocyclic or bicyclic aryl group;R.sup.0 represents ##STR2## R.sup.1 represents an alkyl group, a substituted alkyl group, an aryl group, or a substituted aryl group;R.sup.2 and R.sup.3 each represents a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group, an alkoxy group, a substituted alkoxy group, an amino group, or a substituted amino group;R.sup.4 represents a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group or a substituted aryl group; andR.sup.5 represents an acyl group, a sulfinyl group, a sulfonyl group, or a carbamoyl group, or represents a group selected from the groups represented by R.sup.1, R.sup.2, R.sup.3 and R.sup.4.
    • 公开了一种用于处理卤化银照相材料的方法,其包括在由式(I)表示的化合物或其盐与无机或有机酸存在下显影处理卤化银照相材料:(I) 其中Z表示碳原子的原子团,氮原子或其组合形成5-,6-或7-元不饱和杂环,所述不饱和杂环任选地与单环或双环芳基稠合; R 0表示R 1表示烷基,取代的烷基,芳基或取代的芳基; R2和R3各自表示氢原子,烷基,取代的烷基,芳基,取代的芳基,烷氧基,取代的烷氧基,氨基或取代的氨基; R4表示氢原子,烷基,取代的烷基,芳基或取代的芳基; 并且R 5表示酰基,亚磺酰基,磺酰基或氨基甲酰基,或表示选自由R 1,R 2,R 3和R 4表示的基团的基团。