Prevention of dye-diffusion in photographic image bearing colloid layers
United States Patent 3234025

Inventors:
Hoof, Albert Emiel Van
Maurice, Hart Rene
Publication Date:
02/08/1966
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Assignee:
GEVAERT PHOTO PROD NV
Primary Class:
430/199
Other Classes:
101/464, 430/941, 528/424, 528/367, 101/470, 430/213
International Classes:
G03C7/25; G03C7/22
Foreign References:
CA543893A
GB755478A
GB782217A