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14 条记录 (耗时 0.036 秒)

    Photographic developing solution and use thereof in the high contrast development of nucleated photographic elements
    4.
    发明授权
    Photographic developing solution and use thereof in the high contrast development of nucleated photographic elements 失效
    摄影显影液及其在成像照相元件的高对比度发展中的应用

    公开(公告)号：US5236816A

    公开(公告)日：1993-08-17

    申请号：US866604

    申请日：1992-04-10

    申请人： Michael D. Purol ,  Paul A. Zielinski ,  Donald L. Kerr

    发明人： Michael D. Purol ,  Paul A. Zielinski ,  Donald L. Kerr

    IPC分类号： G03C1/06 ,  G03C1/295 ,  G03C1/42 ,  G03C5/29 ,  G03C5/30 ,  G03C5/305

    CPC分类号： G03C5/30

    摘要： An improved photographic developing solution is free of dihydroxybenzene developing agents such as hydroquinone, has a pH in the range of from 9.5 to 11.5 and comprises (1) an ascorbic acid developing agent, (2) an auxiliary super-additive developing agent and (3) a carbonate buffering agent in a concentration of at least 0.5 molar. The developing solution is broadly useful in black-and-white development but is most advantageously employed in a process for forming a high-contrast image utilizing a silver halide photographic element comprising a hydrazine compound which functions as a nucleating agent and an amino compound which functions as an incorporated booster. The developing solution is ecologically advantageous, exhibits excellent stability with respect to seasoning effects, and provides high speed and good upper scale contrast combined with a low level of pepper fog and a moderate degree of chemical spread.

    High contrast photographic elements containing ballasted hydrophobic isothioureas
    5.
    发明授权
    High contrast photographic elements containing ballasted hydrophobic isothioureas 失效
    含有BALASTED HYDROPHOBIC同位素的高对比摄影元素

    公开(公告)号：US5126227A

    公开(公告)日：1992-06-30

    申请号：US599218

    申请日：1990-10-17

    申请人： Harold I. Machonkin ,  Donald L. Kerr

    发明人： Harold I. Machonkin ,  Donald L. Kerr

    IPC分类号： G03C1/06

    CPC分类号： G03C1/061

    摘要： Silver halide photographic elements which are capable of high contrast development, when processed in the presence of a hydrazine compound that functions as a nucleating agent, contain both an amino compound which functions as an incorporated booster and a ballasted hydrophobic isothiourea compound comprising a ballasting group, that is attached to the sulfur atom, which serves to restrict the mobility of the compound and thereby aid in retaining it in the photographic element during development. The ballasted hydrophobic isothiourea compound is highly effective in reducing pepper fog and also serves to restrain image spread.

    Imagewise accelerating equilibration in ultrasonographic recording
    7.
    发明授权
    Imagewise accelerating equilibration in ultrasonographic recording 失效
    超声记录中图像加速平衡

    公开(公告)号：US4324849A

    公开(公告)日：1982-04-13

    申请号：US161521

    申请日：1980-06-20

    申请人： Donald L. Kerr ,  Gary M. Russo

    发明人： Donald L. Kerr ,  Gary M. Russo

    IPC分类号： G01H3/10 ,  G03C5/04 ,  G03C5/26 ,  G01N29/00

    CPC分类号： G01H3/10 ,  G03C5/04

    摘要： A process is disclosed for recording an ultrasonic exposure pattern employing an ultrasonographic element containing a support and a recording layer unit. The recording layer unit is placed into contact with a transport liquid and imagewise ultrasonically exposed to accelerate imagewise diffusion from the recording layer unit to the transport liquid, thereby producing in the recording layer unit an ultrasonographic record. Diffusion is further accelerated imagewise by establishing a temperature differential within the transport liquid adjacent the recording layer unit.

    摘要翻译： 公开了一种用于记录采用含有载体​​和记录层单元的超声波元件的超声波曝光图案的方法。 记录层单元被放置成与运输液体接触并成像超声波曝光以加速从记录层单元到输送液体的成像扩散，从而在记录层单元中产生超声波记录。 通过在与记录层单元相邻的输送液体内建立温度差来进一步加速扩散。

    Black and white photographic elements containing release compounds and method of preparing photographic emulsion
    8.
    发明授权
    Black and white photographic elements containing release compounds and method of preparing photographic emulsion 失效
    含有释放化合物的黑色和白色照相元件和制备照相乳剂的方法

    公开(公告)号：US5500338A

    公开(公告)日：1996-03-19

    申请号：US455944

    申请日：1995-05-31

    申请人： Donald L. Kerr ,  Jerome J. Looker

    发明人： Donald L. Kerr ,  Jerome J. Looker

    IPC分类号： G03C1/43 ,  G03C1/34 ,  G03C7/305 ,  G03C1/38 ,  G03C1/42

    CPC分类号： G03C1/346 ,  G03C7/305 ,  Y10S430/156 ,  Y10S430/158 ,  Y10S430/16

    摘要： The invention provides a black and white photographic element comprising a support having situated thereon at least one silver halide emulsion, the element containing a release compound that provides a non-imagewise distribution of a photographically active moiety, wherein the release compound has the structure ##STR1## wherein R.sup.1 is an electron withdrawing moiety;m is 0, 1, 2 or 3;R.sup.2 is a group containing an aqueous solubilizing group;q is 1 or 2;TIME is a timing group;n is 0, 1, 2 or 3; andPAM is a photographically active moiety.Also provided is a method of preparing a photographic emulsion comprising precipitating silver halide grains in a colloidal medium, washing the grains, sensitizing the grains by adding dyes, chemical sensitizers and heating, and adding to the emulsion a methanolic solution comprising a release compound as described above.

    摘要翻译： 本发明提供了一种黑色和白色照相元件，其中包含一个载体，其上至少有一个卤化银乳剂，该元素含有提供摄影活性部分的非成像分布的释放化合物，其中该释放化合物具有结构其中R 1是吸电子部分; m为0,1,2或3; R2是含有水溶性基团的基团; q为1或2; TIME是一个时间组; n为0,1,2或3; 并且PAM是照相活性部分。 还提供了一种制备照相乳剂的方法，其包括在胶体介质中沉淀卤化银颗粒，洗涤晶粒，通过添加染料，化学增感剂和加热使颗粒致敏，并向乳液中加入包含如上所述的释放化合物的甲醇溶液 以上。