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:
Sep. 01, 1987
Filed:
Apr. 24, 1986
Kayoko Nagai, Numazu, JP;
Kazuo Tsubuko, Numazu, JP;
Ricoh Co., Ltd., Tokyo, JP;
Abstract
The present invention relates to a liquid developer for electrophotography having a solid content of not less than 10% by weight and the diffusion speed (as defined in the specification) of not lower than 1 mm/min., which comprises a toner containing a coloring agent covered with a resin and an aliphatic hydrocarbon dispersing medium dispersing said toner therein, wherein said coloring agent comprises a resinous composition containing an ethylene-vinylacetate copolymer as the essential component, which disperses therein a pigment coated with at least one of humic acid, humate and humic acid derivatives, and said toner comprises said coloring agent covered with a resinous composition containing a polymer prepared from a composition containing Monomer I of the following general formula, ##STR1## (wherein R represents hydrogen or methyl group and A represents --COOC.sub.n H.sub.2n+1 or --OCOC.sub.n H.sub.2n+1, n being an integer of 6 to 20) and Monomer II having an allyl group as the essential components.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile