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1. 发明授权

US5073479A Chemical sensitization of photographic silver halide emulsions 失效
标题翻译：摄影银盐乳化液的化学敏化
公开(公告)号：US5073479A
公开(公告)日：1991-12-17
申请号：US597851
申请日：1990-10-15
申请人： Jean F. Reber
发明人： Jean F. Reber
IPC分类号： G03C1/09 , G03C1/10 , G03C1/34
CPC分类号： G03C1/10 , G03C1/09 , G03C1/34
摘要： There is described a process for the production of a silver halide emulsion wherein the chemical sensitization is carried out in the presence of N-methyl formamide.

2. 发明授权

US4311786A Novel sensitizers and their use in direct-positive photographic materials 失效
标题翻译：新型敏化剂及其在直接摄影材料中的应用
公开(公告)号：US4311786A
公开(公告)日：1982-01-19
申请号：US167551
申请日：1980-07-11
申请人： Rolf Steiger , Jean F. Reber
发明人： Rolf Steiger , Jean F. Reber
IPC分类号： C09B23/00 , C09B23/12 , G03C1/18 , G03C1/485 , G03C5/24 , G03C1/36
CPC分类号： C09B23/12 , G03C1/18 , G03C1/4853
摘要： Direct-positive photographic material which has at least one layer which contains a silver halide emulsion surface-fogged by chemical means or by exposure and, as a sensitizer, a trinuclear tetramethinecyanine dye in which all or some of the methine hydrogen atoms have been replaced by fluorine, chlorine, bromine or iodine atoms. The novel trinuclear tetramethinecyanine dyes impart an excellent blue-sensitivity to the photographic materials. Furthermore, high maximum densities and very low minimum densities are achieved.
摘要翻译：具有至少一层的直接正性照相材料，其中含有通过化学方法或暴露表面雾化的卤化银乳剂，以及作为敏化剂的三核四甲基氰染料，其中全部或部分次甲基氢原子已被氟，氯，溴或碘原子。新型三核四氰基染料对照相材料具有优异的蓝色感光性。此外，实现了高的最大密度和非常低的最小密度。

3. 发明授权

US4484992A Process for the production of hydrogen by means of heterogeneous photoredox catalysis 失效
标题翻译：通过异源光催化氧化生产氢气的方法
公开(公告)号：US4484992A
公开(公告)日：1984-11-27
申请号：US342615
申请日：1982-01-25
申请人： Niklaus Buhler , Jean F. Reber , Kurt Meier , Milos Rusek
发明人： Niklaus Buhler , Jean F. Reber , Kurt Meier , Milos Rusek
IPC分类号： B01J19/12 , B01J23/00 , B01J27/00 , B01J27/02 , B01J27/04 , B01J27/057 , B01J35/02 , C01B3/04 , C07B61/00
CPC分类号： C01B3/042 , B01J27/02 , B01J27/04 , B01J27/0573 , Y02E60/364
摘要： A process is described for the selective production of hydrogen by means of heterogeneous photoredox catalysis, in which mixtures of water and alkali metal sulfites or sulfides, alkaline earth metal sulfites or sulfides or ammonium sulfites or sulfides are reacted under the action of light in a suspension of a cadmium sulfide, cadmium sulfoselenide or titanium dioxide/semiconductor powder which is at least partially coated with Cu, Cr, Ni, Co or a noble metal or mixtures thereof. The catalysts which can be employed in this process (coated semiconductor powders) are in some cases novel.
摘要翻译：描述了通过异源光氧化物催化选择性生产氢的方法，其中水和碱金属亚硫酸盐或硫化物，碱土金属亚硫酸盐或硫化物或亚硫酸铵或硫化物的混合物在光的作用下在悬浮液中反应至少部分涂覆有Cu，Cr，Ni，Co或贵金属的硫化镉，硫化镉或二氧化钛/半导体粉末或其混合物。在这种方法中可以使用的催化剂（涂覆的半导体粉末）在某些情况下是新颖的。

4. 发明授权

US4376817A Direct-positive photographic material 失效
标题翻译：直接摄影材料
公开(公告)号：US4376817A
公开(公告)日：1983-03-15
申请号：US287323
申请日：1981-07-27
申请人： Rolf Steiger , Jean F. Reber
发明人： Rolf Steiger , Jean F. Reber
IPC分类号： G03C1/485 , G03C1/10
CPC分类号： G03C1/4853
摘要： Direct-positive photographic material having at least one layer which contains a silver halide emulsion surface-fogged by chemical means or by exposure and a tri-nuclear cyanine dye, which has the formula ##EQU1## in which A.sub.1 is .dbd.CH-- or .dbd.CH--CH.dbd.CH--, Z.sub.1 is a monocyclic or polycyclic heterocyclic radical which is linked by a double bond to the adjacent methine group, Z.sup..sym. is a positively charged radical which is mesomeric to Z.sub.1 and is linked by a single bond to the adjacent methine group, Z.sub.2 --is a nitrogen-heterocyclic radical which has its single positive charge on the nitrogen atom and Z.sub.3 .dbd. is a radical which has no charge on the nitrogen atom and is mesomeric to Z.sub.2, at least one of the radicals Z.sub.2 containing a betain-type structure and it being possible for the cyanine dyes of the formulae (4) and (5) to have a neutral or positive or negative charge, corresponding to the sum of the charges, the positively or negatively charged dyes containing a corresponding counter-ion, and X.crclbar. is a monovalent anion and Y.sup..crclbar..crclbar. is a divalent anion.If desired, the tri-nuclear cyanine dyes are used together with conventional cyanine dyes. The direct-positive material possesses excellent sensitivity in the longwave region of the visible spectrum.
摘要翻译：具有至少一层的直接正性照相材料含有通过化学方法表面雾化或通过曝光的卤化银乳剂和三核花青染料，其具有式（1）＆lt; IMAGE＆gt;（2）＆lt; （3）（4）+ TR （5）其中A1为= CH-或= CH-CH = CH-，Z1为通过双键连接的单环或多环杂环基相邻的次甲基，Z（+）是与Z1相互连接且通过单键与相邻的次甲基相连的带正电荷的基团，Z 2是在氮上具有单个正电荷的氮杂环基团原子和Z 3 =是在氮原子上没有电荷并且与Z2相互反应的基团，至少一个含有甜菜碱型结构的基团Z2，并且对于式（4）和（ 5）具有中性或正电荷或负电荷，对应于电荷的总和，带正电荷或带负电荷的染料c 存在相应的反离子，X（ - ）是一价阴离子，Y（ - ）（ - ）是二价阴离子。如果需要，三核花青染料与常规花青染料一起使用。直接正极材料在可见光谱的长波区域具有极好的灵敏度。

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