发明名称 |
Process for the production of photographic images by dye diffusion transfer and photographic material suitable in this process |
摘要 |
A photographic dye diffusion transfer process is provided which operates by imagwise release of a dye. The dye diffuses to a receiving layer and is mordanted there to give a dye image. The dyes are released from a compound of the formula D-E-F-BAL by reductive cleavage. D is a group which contains the residue of diffusible dye, BAL is a ballasting group which renders the compound containing it substantive to the layer in which it is present, D and E being joined by any type of chemical bond and E and F represent a single or double bond system which links D and BAL and which has a reduction potential above -200 mV measured against a standard hydrogen electrode at a pH of less than 3 and which bond can be reductively cleaved at a pH of less than 3 by a reducing agent which is able to act at a pH below 3.
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申请公布号 |
US4269928(A) |
申请公布日期 |
1981.05.26 |
申请号 |
US19790014776 |
申请日期 |
1979.02.23 |
申请人 |
CIBA-GEIGY AKTIENGESELLSCHAFT |
发明人 |
MASON, LESLIE F. A.;KITZING, RAINER;WHITEAR, BRIAN R. D.;LONG, WILLIAM E.;WOOD, GLENN P.;REEVES, DAVID L. R. |
分类号 |
G03C8/12;C07D241/46;C07D279/18;C09B29/20;C09B44/02;C09B44/12;C09B69/00;C09B69/02;G03C7/28;G03C8/00;G03C8/08;G03C8/10;(IPC1-7):G03C5/54;G03C7/00;G03C1/40;G03C1/10 |
主分类号 |
G03C8/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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