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:
Apr. 14, 2009
Filed:
Sep. 22, 2005
Masaki Nakamura, Akiruno, JP;
Hirotaka Iijima, Hachioji, JP;
Yoshinori Tsubaki, Hachioji, JP;
Konica Minolta Holdings, Inc., Tokyo, JP;
Abstract
An ink-jet ink is provided which exhibits excellent ejection stability during printing and results in improved abrasion resistance of text and images formed on various recording media, as well as improved image smoothness by employing an ink-jet ink wherein in the ink jet ink incorporating at least a pigment, water, and fine polymer particles, the ink viscosity ratio η/ηsatisfies the conditions specified by Formula (1) below, and a recording method using the same:0.8<η/η<5.0  Formula (1)wherein ηrepresents the viscosity of an ink-jet ink at 25° C. which incorporates a viscosity retarding material or incorporates at least a pigment, water, and fine polymer particles, while ηrepresents the viscosity of the above ink at 25° C. in which water equivalent to 10 percent by weight of the entire ink weight has been evaporated.