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:
Aug. 01, 1997
Kiyofumi Nagai, Tokyo, JP;
Akio Kojima, Tokyo, JP;
Masato Igarashi, Kanagawa, JP;
Akiko Konishi, Kanagawa, JP;
Hiroyuki Mochizuki, Tokyo, JP;
Masayuki Koyano, Kanagawa, JP;
Ikuko Tanaka, Tokyo, JP;
Takanori Tsuyuki, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A recording ink composition includes a colorant comprising a pigment which is soluble or dispersible in water, and a polymeric dye having a weight average molecular weight in a range of 5,000 to 15,000, a dispersant including at least one dispersant component selected from the group consisting of at least one polymeric compound having a hydrophilic moiety and a hydrophobic moiety, and/or at least one surfactant having an alkyl group having 5 or more carbon atoms, water, and a water-soluble organic solvent, and a method of recording images on an image receiving medium is performed, using the recording ink composition.