公开(公告)号：US5723271A

公开(公告)日：1998-03-03

申请号：US752339

申请日：1996-11-19

申请人： Thomas M. Smith ,  Vito A. DePalma ,  Scott E. Tunney

发明人： Thomas M. Smith ,  Vito A. DePalma ,  Scott E. Tunney

IPC分类号： G03C1/76 ,  G03C1/83 ,  G03C1/85 ,  G03C1/53 ,  G03C1/835 ,  G03C1/89

CPC分类号： G03C1/7614 ,  G03C1/83 ,  G03C1/85 ,  Y10S430/162

摘要： A photographic element is disclosed which comprises (a) a support, (b) a radiation-sensitive silver halide emulsion layer on one side of the support, and (c) a protective backing on the opposite side of the support which provides scratch and abrasion resistance and process surviving lubricity. The protective backing is comprised of one or more layers, the outermost of which comprises a film-forming hydrophobic lubricious polyester-siloxane block copolymer and a hydrophobic co-binder which does not contain polysiloxane block units. In preferred embodiments of the invention, the backing further comprises a solid particle dye dispersion of a filter dye which is readily soluble or decolorizable in alkali aqueous photographic processing solutions at pH of 8 or above dispersed in an alkaline aqueous insoluble, organic solvent soluble film forming binder, and an electrically conductive agent, such that the backing provides halation protection during exposure as well as process-surviving antistatic protection. The present invention provides photographic elements with a backing which provides photographic process-surviving lubricity. In preferred embodiments, the backing includes a filter dye layer which provides effective antihalation protection, where the filter dyes are decolorized or removed upon processing, preferably over a protected antistatic layer. The invention employs hydrophobic, inherently lubricious, polymeric binder combinations that may be used as film-backing binders for anti-halation dyes, provide an adequate level of scratch and abrasion resistance, an appropriate level of process-surviving slip or friction, and is coatable from relatively safe organic solvents.

摘要翻译： 公开了一种照相元件，其包括（a）载体，（b）载体一侧上的辐射敏感卤化银乳剂层，和（c）在支撑体的相对侧上提供刮擦和磨损的保护背衬 电阻和工艺保持润滑性。 保护背衬由一层或多层组成，其最外层包括成膜疏水性润滑聚酯 - 硅氧烷嵌段共聚物和不含聚硅氧烷嵌段单元的疏水性共粘合剂。 在本发明的优选实施方案中，背衬还包含过滤染料的固体颗粒染料分散体，其在pH8或更高的碱性水性照相处理溶液中容易溶解或脱色，分散在碱性水溶性有机溶剂可溶性成膜剂 粘合剂和导电剂，使得背衬在曝光期间提供遮光保护以及加工存活的抗静电保护。 本发明提供具有背衬的照相元件，其提供感光过程保持润滑性。 在优选的实施方案中，背衬包括提供有效的防旋光保护的过滤染料层，其中过滤染料在加工时被脱色或除去，优选在保护的抗静电层上。 本发明使用疏水性，固有的光滑聚合物粘合剂组合，其可用作防晕染料的膜背衬粘合剂，提供足够水平的耐划伤和耐磨性，适当水平的工艺存活滑脱或摩擦，并且是可涂覆的 来自相对安全的有机溶剂。