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:
Dec. 22, 2020
Filed:
Jul. 05, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Junichi Sakai, Machida, JP;
Tsuyoshi Kanke, Yokohama, JP;
Akiko Tominaga, Kawasaki, JP;
Mamiko Kaji, Kawasaki, JP;
Takashi Imai, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An aqueous ink that enables recording of an image with suppressed feathering and has high ejection stability can be provided. An aqueous ink for ink jet contains a pigment, a polyhydric alcohol derivative and a water-soluble organic solvent. The polyhydric alcohol derivative is a compound in which a proportion of {Y/(X+Y)}×100 (%) where X mole(s) of ethylene oxide group(s) and Y mole(s) of propylene oxide group(s) are added to polyhydric alcohol having three or more hydroxy groups is 55% or more to 95% or less. The water-soluble organic solvent includes a first water-soluble organic solvent having a relative dielectric constant of 10.0 or more to 40.0 or less.