Title:
Printout process and leuco bases of triphenyl methane dyes used therein
United States Patent 3140949
Inventors:
Sprague, Robert H.
Stewart, John A.
Publication Date:
07/14/1964
Other Classes:
430/344, 430/340, 204/157.150
International Classes:
G03C1/675; G03C1/73
US Patent References:
| 2927025 | Photosensitive materials and recording media | | | |