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公开(公告)号：US6153362A
公开(公告)日：2000-11-28
申请号：US313556
申请日：1999-05-14
申请人： Mridula Nair , Lloyd A. Lobo , Tamara K. Jones
发明人： Mridula Nair , Lloyd A. Lobo , Tamara K. Jones
CPC分类号： G03C1/7614 , Y10S430/162
摘要： A photographic element containing a support; at least two contiguous layers, at least one of which is a silver halide emulsion layer superposed on a side of said support; a processing solution permeable protective overcoat containing a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of a urethane component in the copolymer comprises from 20 to 100 percent and a weight ratio of a vinyl component in the copolymer comprises from 0 to 80 percent; a crosslinker for the said copolymer; and a second polymer selected from the group consisting of polyvinyl alcohol, cellulose ethers, n-vinyl amides, polyesters, poly(ethylene oxide), starch, proteins, whey, albumin, poly(acrylic acid), alginates and gums overlying the said at least two contiguous layers; and wherein the ratio of the gelatin to non-gelatin content of the dried layers immediately underlying the uppermost gelatin layer is less than 1.3 with the proviso that the water content of the wet coating of all the gelatin layers prior to drying is at a coverage of greater than 53 g/m.sup.2.
摘要翻译： 含有载体的摄影元件; 至少两个相邻的层，其中至少一个是重叠在所述载体的一侧上的卤化银乳剂层; 包含具有酸官能度的氨基甲酸酯 - 乙烯基共聚物的处理溶液可渗透保护外涂层，其中所述共聚物中的氨基甲酸酯组分的重量比为20-100％，所述共聚物中乙烯基组分的重量比为0至80％; 所述共聚物的交联剂; 和选自聚乙烯醇，纤维素醚，正乙烯基酰胺，聚酯，聚（环氧乙烷），淀粉，蛋白质，乳清，白蛋白，聚（丙烯酸），藻酸盐和树胶的第二种聚合物， 最少两个连续层; 并且其中刚刚在最上层明胶层下方的干燥层的明胶与非明胶含量之比小于1.3，条件是干燥前所有明胶层的湿涂层的水含量为 大于53克/平方米。
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