| Original document(13 pages) Authorized document(12 pages) 中文版 |
This technology can be used for the duplication of various black-white images and for all kinds of domestic and overseas photosensitive materials of black-white duplication. The black-white reversal developing prescription, which combines"equalized development" with reverse development, is used chemical reversion being used, the conventional reexposuring procedure is omitted, so the effects of both reverse development and tiny granule can be obtained. Going through a special "dark box of film" installed on the reducing instrument for aerial surveying, the original film is directly duplicated into negative film with the same polarity as the original. The obtained image is clear and keeps a certain geometrical accuracy. The invention is suitaable for reducing duplication of the images of the aerial surveying negative films on nitric substrate, remote sense, and the aerial surveying negative films on other substrates. |
Application Number
申请号 |
86107023 |
Application Date
申请日 |
1986.10.22 |
| Title 名称 |
Technology and prescription for reducing and duplicating image informations |
Publication Number
公开号 |
1010861 |
Publication Date
公开日 |
1987.05.06 |
| Approval Pub. Date |
|
Granted Pub. Date |
1992.04.08 |
| International Classification 分类号 |
G03C5/26 |
Applicant(s) Name
申请人 |
Scientific and Technological Office, Yellow River Water Conservancy Committee (C |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Liang Yinbang |
| Attorney & Agent 代理人 |
MOU FENGJU LI HEXIANG |
| More information 更 多 信 息 |
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