Yellow dye-containing developing composition and its use in two-stage
processing of roomlight handleable black-and-white photographic elements
    13.
    发明授权
    Yellow dye-containing developing composition and its use in two-stage processing of roomlight handleable black-and-white photographic elements 失效
    含黄色染料的显影组合物及其在室温下可处理的黑白摄影元件的两级加工中的应用

    公开(公告)号:US6033838A

    公开(公告)日:2000-03-07

    申请号:US260101

    申请日:1999-03-02

    摘要: Black-and-white elements, such as radiographic films, can be processed in roomlight because the developing composition includes a water-soluble colorant. Such colorants are water-soluble dyes that have a maximum absorption wavelength of from about 350 to about 500 nm. Processing is carried out by processing the exposed element using a two-stage process in the same processing container. In the first stage, development is initiated with an opaque developing composition having a pH of from about 10 to about 12.5, and comprising an appropriate black-and-white developing agent, a yellow colorant, and a sulfite. After an appropriate time, a fixing agent (other than a sulfite) is introduced into the processing container to begin simultaneous development and fixing. The entire process in quite rapid, that is less than 90 seconds.

    摘要翻译: 黑白元素如放射照相胶片可在室温下加工,因为显影组合物包含水溶性着色剂。 这种着色剂是具有约350至约500nm的最大吸收波长的水溶性染料。 通过在相同的处理容器中使用两阶段处理来处理暴露的元件来进行处理。 在第一阶段中,开发具有pH为约10至约12.5的不透明显影组合物,并且包含适当的黑白显影剂,黄色着色剂和亚硫酸盐。 在适当的时间之后,将定影剂(亚硫酸盐以外的物质)引入处理容器中以开始同时显影和固定。 整个过程相当快,也就是不到90秒。

    Opaque developing composition and its use to process roomlight
handleable black-and-white photographic elements
    20.
    发明授权
    Opaque developing composition and its use to process roomlight handleable black-and-white photographic elements 失效
    不透明显影组合物及其用于处理室内可处理的黑白照相元件

    公开(公告)号:US5981153A

    公开(公告)日:1999-11-09

    申请号:US205902

    申请日:1998-12-04

    摘要: Black-and-white elements, such as radiographic films, can be processed in roomlight because the developing composition includes a particulate opacifying agent, such as carbon black. Processing is carried out by processing the exposed element using a two-stage process in the same processing container. In the first stage, development is initiated with an opaque developing composition having a pH of from about 10 to about 12.5, and comprising an appropriate black-and-white developing agent in a concentration of from about 0.1 to about 0.5 mol/l, opacifying agent, and a sulfite at from about 0.1 to about 0.7 mol/l. After an appropriate time, a fixing agent (other than a sulfite) is introduced into the processing container to begin simultaneous development and fixing. The entire process in quite rapid, that is less than 90 seconds.

    摘要翻译: 黑白元素例如放射照相胶片可以在室温下加工,因为显影组合物包括微粒遮光剂如炭黑。 通过在相同的处理容器中使用两阶段处理来处理暴露的元件来进行处理。 在第一阶段中,开发具有pH为约10至约12.5的不透明显影组合物,并且包含浓度为约0.1至约0.5mol / l的合适的黑白显影剂,不透明的 试剂和约0.1至约0.7mol / l的亚硫酸盐。 在适当的时间之后,将定影剂(亚硫酸盐以外的物质)引入处理容器中以开始同时显影和固定。 整个过程相当快,也就是不到90秒。