| 发明名称 |
Direct-positive photographic silver halide emulsion |
| 摘要 |
Direct-positive photographic silver halide emulsion which contains a dye having a 5,6-dihydropyrrolo[2,1-a]isoquinoline ring is disclosed. Said emulsion has a high speed, produces high contrast images, has no color stain with any remaining dye after processing and causes only small depression in the maximum density.
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| 申请公布号 |
US4147554(A) |
申请公布日期 |
1979.04.03 |
| 申请号 |
US19770778328 |
申请日期 |
1977.03.16 |
| 申请人 |
MITSUBISHI PAPER MILLS, LTD. |
发明人 |
TANAKA, AKIRA;NAKATANI, MAMORU;YOSHIDA, AKIO |
| 分类号 |
C09B23/00;G03C1/485;(IPC1-7):G03C1/16 |
主分类号 |
C09B23/00 |
| 代理机构 |
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| 地址 |
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