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:
May. 07, 2013
Filed:
Sep. 18, 2008
Applicants:
Masayuki Koyano, Zama, JP;
Hiroshi Goto, Atsugi, JP;
Tamotsu Aruga, Atsugi, JP;
Kiyofumi Nagai, Machida, JP;
Toshiroh Tokuno, Machida, JP;
Inventors:
Masayuki Koyano, Zama, JP;
Hiroshi Goto, Atsugi, JP;
Tamotsu Aruga, Atsugi, JP;
Kiyofumi Nagai, Machida, JP;
Toshiroh Tokuno, Machida, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D 11/02 (2006.01); G01D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ink set includes at least two aqueous inks A and B with different colors, the inks A and B used in an inkjet recording method in which the inks A and B are superimposed for formation of a color image, wherein the ink A contains water-dispersible colorant A1 free of a surfactant-based dispersant, and anionic compound A2, and wherein the ink B contains water-dispersible colorant B1 containing a surfactant-based dispersant.