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    Aromatic azide material and process for producing color images
    7.
    发明授权
    Aromatic azide material and process for producing color images 失效
    芳香AZIDE材料和生产彩色图像的方法

    公开(公告)号：US3598586A

    公开(公告)日：1971-08-10

    申请号：US3598586D

    申请日：1967-07-26

    申请人： BELA GASPAR

    发明人： GASPAR BELA

    IPC分类号： G03C7/25 ,  G03F7/008 ,  G03C5/00

    CPC分类号： G03C7/25 ,  G03F7/0085

    摘要： A LIGHT SENSITIVE MATERIAL CONTAINING A HARDENABLE HYDROPHILIC COLLOID, E.G., A GELATIN, LAYER WHICH CONTAINS A LIGHT SENSITIVE AROMATIC AZIDE AND A TRANSFERABLE DYE, AND PROCEDURE FOR UTILIZING SUCH MATERIAL, WHICH INCLUDES THE STEPS OF EXPOSING SAID COLLOID LAYER TO LIGHT UNDER A PATTERN OR NEGATIVE, TO HARDEN THE COLLOID IN PROPORTION TO THE DEGREE OF EXPOSURE, TEMPORARILY IMMOBILIZING THE TRANSFERABLE DYE, E.G., BY LOWERING THE PH OF THE COLLOID LAYER, OR BY SALT FORMATION, AND REMOVING THE UNHARDENED COLLOID BY DISSOLUTION WITH WATER, THEREBY PRODUCING A DYED MATRIX WITHOUT THE LOSS OF DYE DENSITY OF SAID TRANSFERABLE DYE DURING THE OPERATION WHICH REMOVES THE UNHARDENED COLLOID, THE IMMOBILIZED DYE BEING RENDERED TRANSFERABLE TO A RECEIVING LAYER OR BLANK, E.G., BY CONTACTING THE HARDENED RELIEF IMAGE WITH SUCH RECEIVING LAYER AT A HIGHER PH SUCH AS AN ALKALINE PH, E.G., ABOUT 8.