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. 09, 1999
Filed:
Apr. 23, 1997
Nobuhiro Kagota, Tokyo, JP;
Hironori Wada, Tokyo, JP;
Mitsubishi Paper Mills Ltd., Tokyo, JP;
Abstract
A carbonless pressure-sensitive copying paper which uses a solvent free of an unpleasant odor and friendly to environments and is excellent in color formability and image keeping properties, the copying paper having a layer containing microcapsules enclosing a color former dissolved in a solvent, the solvent being a middle-length-chain triglyceride (MCT), the color former being an indolylazaphthalide compound or a fluoran compound having a trifluoromethylanilino group, the color former further containing a color former different in kind, the solvent further containing a specific fatty acid ester solvent in combination with the MCT, and the color developer being an inorganic color developer, preferably a simi-synthetic solid acid.