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. 17, 2025
Filed:
Feb. 23, 2023
Kyocera Document Solutions Inc., Osaka, JP;
Akinori Koyama, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
An inkjet ink set includes a white ink and a nonwhite ink. The white ink contains a white pigment, a first polysaccharide, glycol ether, and water. The nonwhite ink contains a nonwhite pigment, a second polysaccharide, and water. The white ink has a first surface tension of no greater than 30 mN/m. The first surface tension Tw of the white ink and a second surface tension Tc of the nonwhite ink satisfy formula (1) '3 mN/m≤Tc−Tw≤10 mN/m'. The white ink has a first viscosity of no greater than 5.0 mPa·s. The first viscosity Vw of the white ink and a second viscosity Vc of the nonwhite ink satisfy formula (2) “2.0 mPa·s≤Vc−Vw≤6.0 mPa·s”.