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1. 发明授权

US5061595A Contact film for use in graphic arts with two overcoat layers 失效
标题翻译：接触膜用于具有两个外罩层的图形艺术
公开(公告)号：US5061595A
公开(公告)日：1991-10-29
申请号：US590707
申请日：1990-09-24
申请人： Anthony D. Gingello , David F. Jennings , Richard D. Lucitte , Hermano P. Rocha
发明人： Anthony D. Gingello , David F. Jennings , Richard D. Lucitte , Hermano P. Rocha
IPC分类号： G03C1/95 , G03F1/54
CPC分类号： G03F1/54 , G03C1/95 , Y10S430/151 , Y10S430/162
摘要： A high-contrast room-light-handleable black-and-white silver halide photographic film especially adapted for use as a dry-dot-etchable contact film in the graphic arts is comprised of a support having in order on one side thereof (1) a radiation-sensitive layer comprising silver halide grains, a hydrophilic colloid and a polymer latex, (2) an interlayer comprising a hydrophilic colloid and a polymer latex, and (3) an overcoat layer comprising a hydrophilic colloid, a matting agent and a light-scattering agent, wherein the interlayer has a refracive index in the range of from about 1.4 to about 1.7 and a thickness which is in the range of from about 0.5 to about 5 microns and is at least twice that of the overcoat layer. The combination of the light-scattering agent in the overcoat layer and the thick interlayer facilitates optical spreading of the image during contact exposure, and thereby enhances the performance of the contact film in use with multi-layer originals and in processes of dry dot etching.
摘要翻译：特别适合用作图形领域中的干点蚀刻接触膜的高对比度室内光可处理的黑白卤化银摄影胶片由在其一侧依次具有的支撑件（1）包含卤化银颗粒的辐射敏感层，亲水胶体和聚合物胶乳，（2）包含亲水胶体和聚合物胶乳的中间层，和（3）包含亲水胶体，消光剂和光的外涂层 - 其中所述中间层的折射率在约1.4至约1.7的范围内，厚度在约0.5至约5微米的范围内，且至少为外涂层的两倍。外涂层和厚中间层之间的光散射剂的组合促进了接触曝光期间的图像的光散射，从而提高了使用多层原稿的接触膜的性能和干点蚀刻的工艺。

2. 发明授权

US5175073A Nucleated contact film for use in graphic arts 失效
标题翻译：用于图形艺术的成核接触膜
公开(公告)号：US5175073A
公开(公告)日：1992-12-29
申请号：US675235
申请日：1991-03-26
申请人： Anthony D. Gingello , David F. Jennings , Richard D. Lucitte , Hermano P. Rocha
发明人： Anthony D. Gingello , David F. Jennings , Richard D. Lucitte , Hermano P. Rocha
IPC分类号： G03C1/06 , G03C1/36 , G03C1/76 , G03C1/95
CPC分类号： G03C1/7614 , G03C1/061 , G03C1/36 , G03C1/95 , Y10S430/151 , Y10S430/162
摘要： A high-contrast room-light-handleable black-and-white silver halide photographic film especially adapted for use as a dry-dot-etchable contact film in the graphic arts is comprised of a support having in order on one side thereof (1) a radiation-sensitive layer comprising silver halide grains, a hydrophilic colloid and a polymer latex, (2) an interlayer comprising a hydrophilic colloid and a polymer latex, and (3) an overcoat layer comprising a hydrophilic colloid, a matting agent and a light-scattering agent, wherein the interlayer has a refractive index in the range of from about 1.4 to about 1.7 and a thickness which is in the range of from about 0.5 to about 5 microns and is at least twice that of the overcoat layer, and wherein the film contains in the radiation-sensitive layer, or a layer contiguous thereto, a hydrazine compound which functions as a nucleating agent. The combination of the light-scattering agent in the overcoat layer and the thick interlayer facilitates optical spreading of the image during contact exposure, and thereby enhances the performance of the contact film in use with multi-layer originals and in processes of dry dot etching. Futher improvement in performance is provided by the hydrazine compound which provides chemical image spread to supplement the optical image spread.
摘要翻译：特别适合用作图形领域中的干点蚀刻接触膜的高对比度室内光可处理的黑白卤化银摄影胶片由在其一侧依次具有的支撑件（1）包含卤化银颗粒的辐射敏感层，亲水胶体和聚合物胶乳，（2）包含亲水胶体和聚合物胶乳的中间层，和（3）包含亲水胶体，消光剂和光的外涂层散射剂，其中中间层的折射率在约1.4至约1.7的范围内，厚度在约0.5至约5微米的范围内，并且为外涂层的至少两倍，其中该膜在辐射敏感层中包含或与其相邻的层，其用作成核剂的肼化合物。外涂层和厚中间层之间的光散射剂的组合促进了接触曝光期间的图像的光散射，从而提高了使用多层原稿的接触膜的性能和干点蚀刻的工艺。性能的进一步提高由提供化学图像扩散以补充光学图像扩展的肼化合物提供。

3. 发明授权

US4808516A Photographic emulsion and element 失效
标题翻译：摄影乳液和元素
公开(公告)号：US4808516A
公开(公告)日：1989-02-28
申请号：US76095
申请日：1987-07-21
申请人： Anthony D. Gingello , Hermano P. Rocha
发明人： Anthony D. Gingello , Hermano P. Rocha
IPC分类号： G03C1/06 , G03C1/10 , G03C1/22
CPC分类号： G03C1/22 , G03C1/10 , G03C1/067 , Y10S430/15
摘要： A photographic emulsion comprising silver halide, a spectral sensitizing dye, and rhodanine.

4. 发明授权

US4904565A High-contrast photographic element 失效
标题翻译：高对比度摄影元素
公开(公告)号：US4904565A
公开(公告)日：1990-02-27
申请号：US299902
申请日：1989-01-23
申请人： Ronald J. Schmidt , Hermano P. Rocha
发明人： Ronald J. Schmidt , Hermano P. Rocha
IPC分类号： G03C1/06 , G03C1/825 , G03C1/83
CPC分类号： G03C1/825
摘要： A high-contrast photographic element is disclosed comprising a support having thereon in order, a layer comprising a filter dye (A), at least one silver halide emulsion layer having a gamma of at least 10, and a layer comprising a filter dye (B), which is the same as or different from dye (A), wherein filter dyes (A) and (B) absorb light in the region of the spectrum to which the silver halide emulsion layer is sensitive.

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