Title:
THERMOGRAPHIC COPYING SYSTEM
United States Patent 3447944
US Patent References:
Process of converting a polyamino-triarylmethane dye coating on a base from a stabilized leuco form to a colored form
- - 2755203
Nitro derivatives of benzoyl leuco methylene blue
- - 2783228
Leucauramine derivate of benzoyl leuco methylene blue and transfer sheet coated therewith
- - 2915415
Methods of copy reproduction
- - 2935938
Heat-sensitive copy-paper and method of making
- - 3076721
Process of converting a polyamino-triarylmethane dye coating on a base from a stabilized leuco form to a colored form
- - 2755203
Nitro derivatives of benzoyl leuco methylene blue
- - 2783228
Leucauramine derivate of benzoyl leuco methylene blue and transfer sheet coated therewith
- - 2915415
Methods of copy reproduction
- - 2935938
Heat-sensitive copy-paper and method of making
- - 3076721
Inventors:
Werner, Raymond E.
Publication Date:
06/03/1969
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Export Citation:
Assignee:
STERLING DRUG INC
Primary Class:
Other Classes:
430/964, 503/218, 503/217, 503/209, 428/913
International Classes:
B41M5/30; D21H1/22; B32B29/06
US Patent References:
| 3129109 | Heat-sensitive copy-sheet |