Appeal No. 1999-0106 2
Application No. 08/594,721
THE INVENTION
The invention is directed to a photographic developing solution comprising
specified components and having a pH between 9.6 and 11.0. Additional features of
the claimed subject matter are set forth in the following illustrative claim.
THE CLAIM
Claim 1 is illustrative of appellants’ invention and is reproduced below:
1. Photographic developing solution having a pH value between 9.6 and
11.0, comprising hydroquinone in an amount from 0 to less than 30 g per liter,
an auxiliary developing agent, and as silver halide complexing agents alkali metal
sulphate salts in an amount from 0 to less than 50 g per liter, thiocyanate salts in
amounts from 0.1 to 3 g, and of a compound corresponding to the formula (I), a
precursor thereof, and/or a metal salt thereof
1
wherein each of A, B and D independently represents an oxygen atom or NR ;
2 3 4 5
X represents an oxygen atom, a sulphur atom, NR ; CR R ; C=O; C=NR or
C=S;
’2 ’3 ’4 ’5
Y represents an oxygen atom, a sulphur atom, NR ; CR R ; C=O; C=NR or
C=S;
”2 ”3 ”4 ”5
Z represents an oxygen atom, a sulphur atom, NR ; CR R ; C=O; C=NR or
C=S;
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