发明名称 |
Photographic system and process |
摘要 |
There is provided a developer for use in a one-step process for the development of exposed film resulting in an exposurewise pattern of silver particles which are large enough to be used as printing elements in ink-printing techniques, providing a wide range of densities in the developed film. The developer is based on a buffered system of a developing agent, a sulfinic acid salt of the type HO-R-SO2.M.xH2O where R is a hydrocarbyl group and M is a cation, and a formaldehyde source, with conventional adjuvants such as anti-fogging agents and the like. Instead of the sulfinic acid salt defined above there may be used any compound which upon dissociation in a aqueous medium results in the same active ionic species.
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申请公布号 |
US4598040(A) |
申请公布日期 |
1986.07.01 |
申请号 |
US19830531611 |
申请日期 |
1983.09.12 |
申请人 |
NETZ, YOEL;HOFFMAN, ARNOLD |
发明人 |
NETZ, YOEL;HOFFMAN, ARNOLD |
分类号 |
G03C5/29;G03C5/305;(IPC1-7):G03C5/24;G03C1/02 |
主分类号 |
G03C5/29 |
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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