发明授权
- 专利标题： Ultrafine gold and/or silver chalcogenide and production thereof
- 专利标题（中）： 超细金和/或银硫属化物及其生产
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申请号： US888636申请日： 1992-05-27
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公开(公告)号： US5362470A公开(公告)日： 1994-11-08
- 发明人: Haruhiko Masutomi , Naoko Uchida , Hirofumi Ohtani , Kazuyoshi Ichikawa
- 申请人： Haruhiko Masutomi , Naoko Uchida , Hirofumi Ohtani , Kazuyoshi Ichikawa
- 申请人地址： JPX Tokyo
- 专利权人： Konica Corporation
- 当前专利权人： Konica Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX3-127516 19910530
- 主分类号： C01G5/00
- IPC分类号： C01G5/00 ; C01G7/00 ; G03C1/09 ; C01B19/04 ; C09K11/02
摘要：
A method for manufacturing an ultrafine gold and/or silver chalcogenide being used for the sensitivity speck seeding sensitization method is disclosed. The gold and/or silver compound, and a water-soluble chalcogenide are mixed into a protective colloid solution under prescribed condition. The light-sensitive photographic material obtained by this method has a high sensitivity and low fog property.