The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 11, 1986
Filed:
Jun. 10, 1983
Masanaka Nagamoto, Shizuoka, JP;
Yoshihiro Suguro, Mishima, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A diazo-type thermosensitive recording material comprising a support material, a thermosensitive coloring layer formed thereon, which thermosensitive coloring layer comprises a diazonium compound layer containing a diazonium compound, and a coupler layer containing a coupler, and of the diazonium compound layer and the coupler layer, at least the lower layer near the support material further containing a thermo-fusible material and a water-insoluble binder agent, and in any portions other than the diazonium compound layer of the thermosensitive recording material, an imidazole derivative of the following formula being contained: ##STR1## wherein R.sup.1 represents a higher alkyl group, preferably with 6 to 24 carbon atoms, an alkoxyl or hydroxyalkyl group derived from the above higher alkyl group; R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen, a phenyl group, a benzyl group, an alkyl group, an alkoxyl group, an hydroxyalkyl group or a cyanoalkyl group.