发明授权
- 专利标题： Photographic Lippmann emulsions
- 专利标题（中）： 照相Lippmann乳液
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申请号： US545742申请日： 1975-01-30
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公开(公告)号： US4202695A公开(公告)日： 1980-05-13
- 发明人: Herman A. Philippaerts , Robert J. Pollet , Wolfgang Muller-Bardorff , Wilhelm Saleck , Anita von Konig , Walter Gauss , Franz Moll , Theofiel H. Ghys
- 申请人： Herman A. Philippaerts , Robert J. Pollet , Wolfgang Muller-Bardorff , Wilhelm Saleck , Anita von Konig , Walter Gauss , Franz Moll , Theofiel H. Ghys
- 申请人地址： BEX Mortsel
- 专利权人： AGFA-GEVAERT N.V.
- 当前专利权人： AGFA-GEVAERT N.V.
- 当前专利权人地址： BEX Mortsel
- 优先权： DEX2161045 19711209
- 主分类号： G03C1/09
- IPC分类号： G03C1/09 ; G03C1/34 ; G03C5/04 ; G03C1/28 ; G03C5/00
摘要：
Fine-grain silver halide emulsions of the Lippmann-type are described which comprise derivatives of heterocyclic mercaptans corresponding to the formulae: ##STR1## wherein: each of Z.sub.1 and Z.sub.2 represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring system,n is 0 or 1,X is --CO-- or --CS--,R is an alkyl group or an aryl group, andY is --CO--, --COO--, --CS--, --SO.sub.2 --, --CON(R.sub.1)-- or --CSN(R.sub.1)--, R.sub.1 being hydrogen, alkyl or aryl.Both in reversal and negative processing sharpness of fine detail is improved and the distortion of image-details is reduced. Upon reversal processing yellow staining is also reduced.
公开/授权文献
- US5630486A Mechanical actuation device for drum brake 公开/授权日：1997-05-20
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