G - Physics – 03 – C
Patent
G - Physics
03
C
96/143, 96/272,
G03C 5/30 (2006.01) G03C 1/043 (2006.01) G03C 1/09 (2006.01)
Patent
CA 1132396
Abstract Photographic elements containing image-wise develo- pable silver halide are developed in the presence of an oxathioether development activator according to the for- mula : R1A-(ocH2cH2)n-s-A -(X A )m wherein : R1 is H, alkyl, hydroxyalkyl, or R2-Y-(A"-X)m-A'-S-, A, A', and A" is alkylene, with the proviso that A is a moDovalent bond when R is hydrogen or alkyl or hydroxyalkyl, is -OCO-, -S02-, -CONH-, or Y, Y is ligand or complexing function of the type of -S- and -N(Q)- (Q - H or alkyl), R2 is alkyl, which may be substituted by OH, or when Y is -N(Q)-, R2 together with Q may represent the atoms needed to complete a nitrogen-containing saturated ring, n is at least 2, ard m is O or 1. The development activators can be used in black-and- white development or in colour development. They can be incorporated in the photographic material or in the deve- lopiL- 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 deve- lopment developable.
360461
Brems Karel A.
de Ramaix Maurice A.
Pollet Robert J.
Sels Francis J.
Agfa-Gevaert Naamloze Vennootschap
Borden Ladner Gervais Llp
LandOfFree
Photographic silver halide development in the presence of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photographic silver halide development in the presence of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic silver halide development in the presence of... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-717550