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2. 发明授权

US5254447A Photographic elements comprising a glass plate support and method for their manufacture 失效
标题翻译：包括玻璃板载体的照相元件及其制造方法
公开(公告)号：US5254447A
公开(公告)日：1993-10-19
申请号：US871869
申请日：1992-04-20
申请人： Arlene L. Meyer , Thomas M. Smith , Richard O. Smith
发明人： Arlene L. Meyer , Thomas M. Smith , Richard O. Smith
IPC分类号： G03C1/76 , G03C1/805 , G03C11/08 , G03C1/815
CPC分类号： G03C11/08 , G03C1/76 , G03C1/805 , Y10S430/151 , Y10T428/1414 , Y10T428/162 , Y10T428/2809
摘要： Photographic glass plates are advantageously prepared by a process in which the functional layers are applied to the glass plate support by lamination. In a first form of this process, a multilayer-composite comprising antihalation, silver halide emulsion and protective overcoat layers is transferred from a flexible polymeric film support to the glass support. In carrying out this first form of the process, a release layer, protective overcoat layer, silver halide emulsion layer and antihalation layer are coated, in order, on a flexible polymeric film and laminated via an adhesive layer to a glass plate having suitable thickness and flatness for use as a photographic support. The release layer is designed to have greater adhesion to the flexible polymeric film than to the protective overcoat layer, whereby the film and release layer can be stripped off prior to the plate being put into use. In a second form of the process, an antihalation layer, silver halide emulsion layer and protective overcoat layer are coated, in order, on a support material comprised of a release sheet, a very thin polymeric film and an adhesive layer interposed between the release sheet and the film, the release sheet is then stripped away and the remainder of the coated support material is laminated via the adhesive layer to the glass plate support. The process of lamination eliminates the difficult task of directly coating photographic layers on glass plates and greatly facilitates the preparation of high quality photographic glass plates in a wide variety of different sizes.
摘要翻译：摄影玻璃板有利地通过其中功能层通过层压施加到玻璃板支撑件的方法来制备。在该方法的第一种形式中，包含防光晕，卤化银乳剂和保护性外涂层的多层复合材料从柔性聚合物膜载体转移到玻璃载体上。在进行该方法的第一种形式时，依次将剥离层，保护性外涂层，卤化银乳剂层和防光晕层涂覆在柔性聚合物膜上，并通过粘合剂层层压到具有合适厚度的玻璃板上，用作照相支架的平面度。剥离层被设计成具有比柔性聚合物膜更好的粘合性，而不是保护性外涂层，从而可以在使用该板之前剥离膜和剥离层。在该方法的第二种形式中，依次将防光层，卤化银乳剂层和保护性外涂层涂覆在由脱模片，非常薄的聚合物膜和插入在剥离片之间的粘合剂层的支撑材料上然后剥离薄膜，然后剥离剥离片，并将经涂覆的载体材料的其余部分经由粘合剂层层压到玻璃板载体上。层压过程消除了在玻璃板上直接涂布照相层的困难任务，并且极大地有助于制备各种不同尺寸的高质量照相玻璃板。

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