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US 4,362,811 AGranted
Processing solution composition for silver complex diffusion transfer process
AssigneeMitsubishi Paper Mills Limited
InventorsShigeru Iguchi, Shozi Oka
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Abstract
A processing solution composition for treating an image receiving layer in silver complex diffusion transfer process, which contains 1.7.times.10.sup.-3 to 1.7.times.10.sup.-2 mole/liter of a bromide and 2.0 to 12.0 mole-% of potassium ion based on total cations of the salts contained in the composition accelerates the transfer speed and gives a silver image high in maximum density, contrast and sharpness to the image.
Claims15
A silver complex diffusion transfer processing solution composition containing substantially no developing agent which comprises:
- (1) an alkaline substance,
- (2) an alkali metal sulfite,
- (3) a solvent for silver halides which is other than sulfite,
- (4) 1.7.times.10.sup.-3 to 1.7.times.10.sup.-2 mole/liter of a bromide,
- (5) a content of potassium ion of 2.0 to 12.0 mol % based on the total cations of the salts contained in the composition, and
- (6) water.
3 more elements
Dependencies are inferred from the claim text.