发明名称 |
DIRECT-POSITIVE PHOTOGRAPHIC ELEMENTS CONTAINING MULTIPLE LAYERS |
摘要 |
This invention relates to direct-positive silver halide elements comprising (1) duplicate layers containing silver halide emulsions having substantially the same light-response characteristics and (2) means for providing a sensitivity difference between said duplicate layers of at least 0.5 log exposure. In certain preferred embodiments, relatively light-insensitive absorbing silver halide emulsions and/or light-absorbing dyes are used in an interlayer to provide an effective density of 0.1 to 1.5.
|
申请公布号 |
US3647463(A) |
申请公布日期 |
1972.03.07 |
申请号 |
USD3647463 |
申请日期 |
1969.08.14 |
申请人 |
EASTMAN KODAK CO. |
发明人 |
ROBERT C. TABER;JAMES E. KOLLER |
分类号 |
G03C1/46;G03C1/485;G03C1/825;(IPC1-7):G03C1/76 |
主分类号 |
G03C1/46 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|