Appeal No. 96-3824
Application No. 08/311,635
useful as redox amplifiers and comprise, in particular amounts
and at a particular pH achieved by the use of a particular
phosphate buffer (see appellant’s specification at page 4,
lines 9 through 12), a color developing agent and hydrogen
peroxide or a compound which provides hydrogen peroxide and an
hydroxylamine of a particular formula or a salt thereof.
Appellant also claims the method of developing an imagewise
exposed color photographic element by using appellant's
compositions described above.
Claims 1 and 10 are reproduced below for a more facile
understanding of the appealed subject matter.
1. An aqueous redox amplifier composition comprising
a colour developing agent, hydrogen peroxide or a
compound which provides hydrogen peroxide and a
hydroxylamine compound of the formula:
R 1
OH-N (I)
R 2
1 2
or a salt thereof wherein R and R
are each a substituted or unsubstituted alkyl group
of 1-4 carbon atoms and wherein the concentration
ranges are:
hydrogen peroxide from 0.5
to 10 ml/l (as 30% w/w solution),
3
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