Coating processes – Nonuniform coating – Paper or textile base
Patent
1977-11-09
1981-11-17
Hoffman, James R.
Coating processes
Nonuniform coating
Paper or textile base
101426, 101DIG1, 427150, B41M 514
Patent
active
RE0307971
ABSTRACT:
Described herein are methods of printing which comprise applying to an unfired silicate surface characterized by high ionizing power a substantially colorless associated salt of an arylmethane dye base characterized by a logarithmic dissociation constant below 7 and an organic sulfinic acid whereby physical contact of the associated compound and the silicate dissociates the compound to the intensely colored cation of the dye and produces color on the silicate surface.
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Hoffman James R.
Scott Paper Company
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