Appeal No. 1998-0434
Application 08/620,745
toward a nonelected invention.
THE INVENTION
The appellants claim a concentrated fixing solution which
contains a thiosulfate, a water-soluble aluminum salt, and a
compound selected from a Markush group of acids and their
salts, and which does not substantially contain a boron
compound.1 The appellants also claim a method of processing a
silver halide material using this fixing solution. Claim 1,
directed toward the fixing solution, is illustrative:
1. A concentrated fixing solution which comprises at
least a thiosulfate, a water-soluble aluminum salt, and a
compound having an absorbance of from 0.25 to 1.15, and does
not substantially contain a boron compound,
wherein the absorbance is measured by an absorptiometer
of ultraviolet light/visible light in a solution having a pH
of 4.85 and containing a buffer solution of 1.55 mol/liter of
an acetic acid/sodium acetate, 2.5x10-4 mol/liter of Al3+,
2.5x10-5 mol/liter of the following compound A, and 5x10-3
mol/liter of a compound for evaluation:
1 The appellants state that “the phrase ‘which does not
substantially contain a boron compound’ means that the
concentration of the boron compound is 0.04 mol/liter in the
fixing solution” (specification, page 5).
2
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