| 发明名称 |
Photographic emulsions and elements capable of forming direct-positive images |
| 摘要 |
Silver halide emulsions are disclosed containing silver halide grains capable of forming an internal latent image. Incorporated in the emulsions is a diphenylmethane nucleating agent, thereby permitting a direct-positive image to be formed on imagewise exposure and photographic processing.
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| 申请公布号 |
US4315986(A) |
申请公布日期 |
1982.02.16 |
| 申请号 |
US19800205069 |
申请日期 |
1980.11.10 |
| 申请人 |
EASTMAN KODAK COMPANY |
发明人 |
BARALLE, ROGER M.;COMPERE, MARCEL A.;PFAFF, MAURICE E.;GOUMONT, CLAUDE G. |
| 分类号 |
G03C1/485;(IPC1-7):G03C1/48 |
主分类号 |
G03C1/485 |
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