04246318 is referenced by 15 patents and cites 5 patents.

A thermally sensitive record material is disclosed which comprises chromogenic material which is a mixture of the isomers 7-(1-ethyl-2-methylindol-3-yl)-7-(4-dimethylamino-2-ethoxyphenyl)-5,7-dihy drofuro[3,4-b]pyridin-5-one and 5-(1-ethyl-2-methylindol-3-yl)-5-(4-diethylamino-2-ethoxyphenyl)-5,7-dihyd rofuro[3,4-b]pyridin-7-one. This record material has superior color forming efficiency and greater image stability, especially resistance to fading in incident light.

Title
Thermally-responsive record material
Application Number
6/28630
Publication Number
4246318
Application Date
April 9, 1979
Publication Date
January 20, 1981
Inventor
Henry H Baum
Appleton
WI, US
Agent
Paul S Phillips Jr
E Frank McKinney
Assignee
Appleton Papers
WI, US
IPC
B41M 5/18
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