Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1972-12-27
1976-06-15
Herbert, Jr., Thomas J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
260335, 282 275, 428487, 428488, B41C 106, B41M 516
Patent
active
039638537
ABSTRACT:
A coated transfer sheet for pressure-sensitive copying systems which comprises an organic colorless color former containing two or more potential chromophoric systems each of which is capable of being activated substantially immediately when the compound is brought into contact with one or more activating substances.
REFERENCES:
patent: 3427180 (1969-02-01), Phillips
patent: 3432327 (1969-03-01), Kan et al.
patent: 3637757 (1972-01-01), Chao-Han Lin
patent: 3641011 (1972-02-01), Lin et al.
patent: 3764369 (1973-10-01), Hoover et al.
Hughes Nigel
Renfrew Andrew Hunter Morris
Herbert, Jr. Thomas J.
Wiggins Teape Limited
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