Radiation imagery chemistry: process – composition – or product th – Dye image from radiation sensitive dye or dye former by dry... – Pretreatment processing before imaging – e.g. – overall...
Patent
1990-01-22
1991-01-15
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Dye image from radiation sensitive dye or dye former by dry...
Pretreatment processing before imaging, e.g., overall...
430338, 430945, 503220, G03C 173, B41M 520
Patent
active
049853457
ABSTRACT:
A recording material employing at least one leuco dye having formula (I), which is colored when brought into contact with a color developer capable of inducing color formation in the leuco dye: ##STR1## wherein R.sup.1 and R.sup.2 each represent an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group, an unsubstituted or substituted aralkyl group, or an unsubstituted or substituted aryl group, which R.sup.1 and R.sup.2 may form a ring in combination or a morpholine ring through an oxygen atom; R.sup.3 represents hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms or an aralkyloxy group; R.sup.4 and R.sup.5 each represent an alkyl group having 1 to 4 carbon atoms; and R.sup.6 represents hydrogen, an alkyl group having 1 to 4 carbon atoms or a halogen.
REFERENCES:
patent: 4119776 (1978-10-01), Fourber
Akagi Nobuo
Furuya Hiromi
Hayakawa Kunio
Kodera Kaoru
Nakata Masahiro
Michl Paul R.
Pezzner Ashley I.
Ricoh & Company, Ltd.
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