公开(公告)号：US5298362A

公开(公告)日：1994-03-29

申请号：US43119

申请日：1993-04-05

申请人： David Beaumond ,  Philip J. Coldrick ,  Nicholas Pightling

发明人： David Beaumond ,  Philip J. Coldrick ,  Nicholas Pightling

IPC分类号： G03C1/035 ,  G03C1/043 ,  G03C1/053 ,  G03C1/06 ,  G03C1/08 ,  G03C1/76 ,  G03C1/91

CPC分类号： G03C1/7614 ,  G03C1/061

摘要： High contrast graphic arts photographic materials exhibiting improved accuracy in image reproduction are comprised of a support, a silver halide emulsion layer having a chloride content of at least 50 mole percent, and a non-electroconductive hydrophilic colloid layer containing both a vinyl polymer and a hydrophilic colloid interposed between the support and the silver halide emulsion layer. A hydrazine nucleating agent is incorporated in or adjacent to the silver halide emulsion layer and the photographic material preferably also contains an amino compound which functions as a booster.

摘要翻译： 具有提高图像再现精度的高对比度图形艺术照相材料包括载体，氯化物含量至少为50摩尔％的卤化银乳剂层和含有乙烯基聚合物和亲水性的非导电亲水胶体层 介于载体和卤化银乳剂层之间的胶体。 肼成核剂并入卤化银乳剂层中或邻近卤化银乳剂层，并且照相材料优选还含有用作增效剂的氨基化合物。

公开(公告)号：US5512415A

公开(公告)日：1996-04-30

申请号：US400078

申请日：1995-03-07

申请人： Allison H. C. Dale ,  Roger H. Piggin ,  Michael B. Ledger ,  David Beaumond

发明人： Allison H. C. Dale ,  Roger H. Piggin ,  Michael B. Ledger ,  David Beaumond

IPC分类号： G03C1/06 ,  G03C1/09 ,  G03C1/22 ,  G03C1/295 ,  G03C1/46 ,  G03C1/91

CPC分类号： G03C1/46 ,  G03C1/061 ,  G03C1/09 ,  G03C1/22

摘要： A high-contrast photographic element, adapted for use in the field of graphic arts, includes a hydrazide nucleator and an amine booster and comprises a silver halide emulsion layer which is capable of forming a latent image under conditions of use and a second silver halide emulsion layer which is not capable of forming a latent image under conditions of use.

摘要翻译： 适用于图形领域的高对比度照相元件包括酰肼成核剂和胺促进剂，并且包含能够在使用条件下形成潜像的卤化银乳剂层和第二卤化银乳剂 在使用条件下不能形成潜像的层。

公开(公告)号：US5013642A

公开(公告)日：1991-05-07

申请号：US437004

申请日：1989-11-15

申请人： Annabel Muenter ,  Anthony Adin ,  Richard L. Parton ,  Nicholas A. Pightling ,  David Beaumond

发明人： Annabel Muenter ,  Anthony Adin ,  Richard L. Parton ,  Nicholas A. Pightling ,  David Beaumond

IPC分类号： G03C1/12 ,  G03C1/20 ,  G03C1/28 ,  G03C1/29

CPC分类号： G03C1/29 ,  Y10S430/145

摘要： A photographic element is disclosed comprising a support having thereon a silver halide emulsion layer spectrally sensitized with(a) a first sensitizing dye according to the formula: ##STR1## Z.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered heterocyclic nucleus,R.sub.1 and R.sub.2 each independently represents substituted or unsubstituted alkyl or substituted or unsubstituted aryl.R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each independently represents hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, andX represents a counterion, and(b) a second sensitizing dye having a maximum sensitivity at a wavelength of about 5 to 100 nm less than the wavelength of maximum sensitivity of the first sensitizing dye.