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53 条记录 (耗时 0.013 秒)

    Gas phase hardening of gelatin holograms
    1.
    发明授权
    Gas phase hardening of gelatin holograms 失效
    明胶全息图气相硬化

    公开(公告)号：US4904554A

    公开(公告)日：1990-02-27

    申请号：US170951

    申请日：1988-03-21

    申请人： John E. Wreede

    发明人： John E. Wreede

    IPC分类号： G03F7/40 ,  C09H9/00 ,  G03C5/22 ,  G03H1/02

    CPC分类号： G03C5/22 ,  G03H1/182 ,  G03H2001/185 ,  G03H2260/10

    摘要： A process for hardening gelatin holograms after dehydration involving subjecting the hologram to an atmosphere containing aldehyde vapor and water vapor. The process provides hardening of the gelatin hologram to increase resistance to moisture and heat without adversely affecting diffraction efficiency. Monitoring of the diffraction efficiency during the aldehyde-water vapor treatment allows fine tuning of the hologram efficiency and evenness.

    Process for the production of lightfast phase holograms utilizing ammonium dichromate and gelatin as photosensitive recording material
    4.
    发明授权
    Process for the production of lightfast phase holograms utilizing ammonium dichromate and gelatin as photosensitive recording material 失效
    使用重铬酸铵和明胶作为感光记录材料生产耐光相全息图的方法

    公开(公告)号：US4029507A

    公开(公告)日：1977-06-14

    申请号：US493515

    申请日：1974-08-01

    申请人： Hans Wehner ,  Manfred Kliemann

    发明人： Hans Wehner ,  Manfred Kliemann

    IPC分类号： G03C5/22

    CPC分类号： G03C5/22 ,  Y10S359/90

    摘要： Hardenable gelatine recording materials are used in a process for the production of lightfast phase halograms. The recording material is hardened by the exposure to light and sensitized with ammonium dichromate. After exposure, it is developed, dehydrated and hardened. Development is carried out in a desensitizing bath containing formaldehyde sulphite and is followed by hardening in a formalin solution. Dehydration is carried out in two successive stages. In the first stage, the material is treated with an aqueous isopropanol solution and in the second stage with a concentrated isopropanol solution to which formaldehyde is added.

    摘要翻译： 可硬化明胶记录材料用于生产耐光相色谱图的方法中。 记录材料通过曝光使其硬化并用重铬酸铵致敏。 曝光后，开发，脱水和硬化。 显影在含甲醛亚硫酸盐的脱敏浴中进行，然后在福尔马林溶液中硬化。 脱水在两个连续阶段进行。 在第一阶段，材料用异丙醇水溶液处理，第二阶段用加入甲醛的浓缩异丙醇溶液处理。

    Photosensitive hexavalent chromium compound containing polyvinyl alcohol composition and method of using
    6.
    发明授权
    Photosensitive hexavalent chromium compound containing polyvinyl alcohol composition and method of using 失效
    包含聚乙烯醇组合物的感光性六价铬化合物及其使用方法

    公开(公告)号：US3615458A

    公开(公告)日：1971-10-26

    申请号：US3615458D

    申请日：1968-07-12

    申请人： PHILIPS CORP

    发明人： DYKSTRA RINSE

    IPC分类号： G03F7/04 ,  G03C1/66 ,  G03C5/22

    CPC分类号： G03F7/04

    摘要： Photosensitive lacquer having a pH of between 6.7 and 8.2 and containing polyvinyl alcohol, a light sensitive chromium compound for hardening the alcohol, a dipolar aprotic substance. The lacquer layers may be dried at temperatures up to about 100* C. without causing hardening of the polyvinyl alcohol. The invention relates to a photosensitive lacquer which consists of a solution in water of polyvinyl alcohol (PVA) in which a hexavalant chromium compound is present, to a method of preparing such lacquers, and to their use in manufacturing patterns according to a photomechanical method. The photosensitive lacquers which are known as such and which consist of a solution of polyvinyl alcohol in which a compound is present containing a hexavalent chromium, are used in various sectors of technology, for example, in manufacturing lithographic plates for offset printing, in which the photohardened layer serves as an ink-absorbing layer, in manufacturing printed circuits in which the photohardened layer serves as an etching resist and in manufacturing picture screens for cathode-ray tubes in which a pattern of substances luminescing upon excitation by electrons is provided on the screen with a photosensitive lacquer. In all these methods the quality of the photosensitive lacquer is very important. The quality is determined inter alia by the shelf life of the photolacquer, the photosensitivity of layers obtained with the photolacquer, and the extent to which the socalled dark reaction in a layer obtained with the photolacquer can occur and which may give rise to hardening of the lacquer on nonexposed, thus undesired, places. The photosensitive lacquers commonly used in the art and consisting of a solution in water of polyvinyl alcohol usually contain ammonium bichromate or ammonium chromate, which latter compound, on drying the lacquer layer, is converted into ammonium dichromate, while ammonia (NH3) volatilizes. Other bichromates which are sometimes used are potassium bichromate and sodium bichromate.

    Method of producing stable holograms in dichromatic gelatin
    10.
    发明授权
    Method of producing stable holograms in dichromatic gelatin 失效
    在二色胶中生产稳定全息图的方法

    公开(公告)号：US4826290A

    公开(公告)日：1989-05-02

    申请号：US99280

    申请日：1987-09-21

    申请人： John E. Wreede ,  James E. Scott

    发明人： John E. Wreede ,  James E. Scott

    IPC分类号： G03C5/22 ,  G03H1/02 ,  G02B27/00 ,  G03H1/04

    CPC分类号： G03H1/02 ,  G03C5/22 ,  G03H2001/026 ,  G03H2260/10 ,  Y10S359/90

    摘要： A method of developing a holographically recorded interference pattern in a dichromatic gelatin structure is provided. The process includes developing the hologram pattern by hydration and dehydration, baking the developed hologram pattern at a temperature equal or above 120.degree. C. for approximately 24 hours, rehydrating the developed hologram and dehydrating the developed hologram at a temperature of approximately 60.degree. C. for approximately 48 hours until the design wavelength response is attained to provide a stabilized hologram.

    摘要翻译： 提供了一种在二色胶体结构中开发全息记录的干涉图案的方法。 该方法包括通过水合和脱水显影全息图，在等于或高于120℃的温度下烘烤显影的全息图图案约24小时，将显影的全息图再水化并在约60℃的温度下脱水显影的全息图。 大约48小时，直到达到设计波长响应以提供稳定的全息图。