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:
Jun. 16, 2015
Filed:
Dec. 01, 2010
Shin Hasegawa, Shizuoka, JP;
Minoru Hakiri, Shizuoka, JP;
Hiroyuki Fushimi, Shizouka, JP;
Mitsuru Naruse, Shizuoka, JP;
Naoya Morohoshi, Shizuoka, JP;
Shin Hasegawa, Shizuoka, JP;
Minoru Hakiri, Shizuoka, JP;
Hiroyuki Fushimi, Shizouka, JP;
Mitsuru Naruse, Shizuoka, JP;
Naoya Morohoshi, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An inkjet recording ink set, which contains at least: a black pigment ink; and a color pigment ink, wherein the black pigment ink contains a black pigment treated with an anionic surfactant, and a black pigment coated with a resinous polymer, and water, and the black pigment ink is a pigment dispersion liquid where the black pigment treated with the anionic surfactant and the black pigment coated with the resinous polymer are dispersed in the water, and wherein the color pigment ink contains a color pigment, a nonionic surfactant, and water, and the color pigment ink is a pigment dispersion liquid where the color pigment is dispersed in the water with assistance of the nonionic surfactant.