Photographic silver halide development in the presence of thioether
development activators
    1.
    发明授权
    Photographic silver halide development in the presence of thioether development activators 失效
    在硫醚发展活化剂存在下,摄影卤化银发展

    公开(公告)号:US4292400A

    公开(公告)日:1981-09-29

    申请号:US185931

    申请日:1980-09-10

    CPC分类号: G03C1/043 G03C1/09

    摘要: Photographic elements containing image-wise developable silver halide are developed in the presence of an oxathioether development activator according to the formula:R.sup.1 --A--(OCH.sub.2 CH.sub.2).sub.n --S--A'--(X--A").sub.m --Y--R.sup.2wherein:R.sup.1 is H, alkyl, hydroxyalkyl, or R.sup.2 --Y--(A"--X).sub.m --A'--S--,A, A', and A" is alkylene, with the proviso that A is a monovalent bond when R.sup.1 is hydrogen or alkyl or hydroxyalkyl,X is --OCO--, --SO.sub.2 --, --CONH--, or Y,Y is ligand or complexing function of the type of --S-- and --N(Q)-- (Q=H or alkyl),R.sup.2 is alkyl, which may be substituted by OH, or when Y is --N(Q)--, R.sup.2 together with Q may represent the atoms needed to complete a nitrogen-containing saturated ring,n is at least 2, and m is 0 or 1.The development activators can be used in black-and-white development or in color development. They can be incorporated in the photographic material or in the developing solution.In reversal processing they can also accomplish the task of the second exposure or of the fogging agent to render the silver halide remaining after the first development developable.

    摘要翻译: 含有成像显影性卤化银的照相元件在氧硫醚醚显影活化剂存在下根据下式开发:R1-A-(OCH2CH2)nS-A' - (X-A“)mY-R2其中R1为 H,烷基,羟基烷基或R2-Y-(A“-X)m-A'-S-,A,A'和A”是亚烷基,条件是当R1为 氢或烷基或羟烷基,X是-OCO - , - SO 2 - , - CONH-或Y,Y是-S-和-N(Q) - (Q = H或烷基)的类型的配体或络合函数, R2是可以被OH取代的烷基,或当Y是-N(Q) - )时,R2与Q一起可以代表完成含氮饱和环所需的原子,n至少为2,m为 0或1.开发激活剂可用于黑白开发或彩色显影。 它们可以并入照相材料或显影液中。 在反转处理中,它们还可以完成第二次曝光或雾化剂的任务,以使第一次显影后的卤化银残留。