Supersensitization of silver halide emulsions
    4.
    发明授权
    Supersensitization of silver halide emulsions 失效
    卤化银乳剂的超敏化

    公开(公告)号:US5013622A

    公开(公告)日:1991-05-07

    申请号:US941287

    申请日:1986-12-12

    IPC分类号: G03C1/035 G03C1/28

    CPC分类号: G03C1/28

    摘要: Supersensitization of silver halide emulsions is effected by the addition of a metal chelating agent after chemical sensitization or a combination of phenylmercaptotetrazoles and a metal chelating agent to a spectrally sensitized emulsion. The contrast of the emulsion may also be increased by the addition of this combination of materials after chemical and spectral sensitization.

    摘要翻译: 卤化银乳剂的超敏化通过在化学增感之后加入金属螯合剂或将苯基巯基四唑和金属螯合剂与光谱增感乳液组合来实现。 在化学和光谱增感之后,通过添加这种材料组合也可以增加乳液的对比度。

    Pneumatically operated pipe crawler
    5.
    发明授权
    Pneumatically operated pipe crawler 失效
    气动履带式履带机

    公开(公告)号:US4372161A

    公开(公告)日:1983-02-08

    申请号:US260012

    申请日:1981-05-04

    IPC分类号: G01M3/00 G01N29/265 G01N29/04

    摘要: A pneumatically operated pipe crawler for transporting inspection equipment along the interior of a pipe comprises an elongate cylindrical tube of flexible resilient material, such as latex rubber, the tube being partitioned by longitudinally spaced plugs which are hermetically sealed to the wall of the tube thus defining three longitudinally separated chambers. The inspection equipment is mounted at the leading end of the crawler. To advance the crawler along the pipe, air or other gas is supplied to the chambers and exhausted therefrom in repeated cyclic sequence for sequentially expanding the chamber wall portions into clamping relation with the pipe, each wall portion recovering to its axial length upon deflation of the chamber, thereby to propel the tube step by step along the pipe.

    摘要翻译: 用于沿管子内部运输检验设备的气动操作的履带式履带机包括一个细长的弹性弹性材料的圆柱形管,例如乳胶橡胶,该管由纵向隔开的塞子隔开,该塞子密封在管壁上,从而限定 三个纵向分离的室。 检查设备安装在履带的前端。 为了沿着管道推进履带,将空气或其它气体以重复的循环顺序供应到室中并从中排出,以将室壁部分顺序地膨胀成与管的夹紧关系,每个壁部分在收缩时恢复到其轴向长度 从而沿管道逐步推进管。

    Photographic contrast enhancers
    6.
    发明授权
    Photographic contrast enhancers 失效
    摄影对比增强剂

    公开(公告)号:US4363873A

    公开(公告)日:1982-12-14

    申请号:US301980

    申请日:1981-09-14

    CPC分类号: G03C1/10 G03C7/39236

    摘要: As silver is the most expensive individual component in photographic film, it is desirable to reduce the quantities of silver in such materials. The addition of a certain class of phenolic derivatives has been found to enhance the contrast generated by dyes in color photographic emulsions. Emulsions containing these phenolic compounds can use less silver and produce the same optical density as emulsions with higher silver concentrations.

    摘要翻译: 由于银是摄影胶片中最昂贵的单独组分,因此希望减少这些材料中的银量。 已经发现添加一类酚类衍生物可以增强彩色照相乳剂中染料产生的对比度。 含有这些酚类化合物的乳液可以使用较少的银并且产生与具有较高银浓度的乳液相同的光密度。