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.

Date of Patent:
Sep. 01, 2020

Filed:

Feb. 26, 2019
Applicant:

Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;

Inventors:

Akihiko Taniguchi, Kakamigahara, JP;

Hiroyuki Tanaka, Inazawa, JP;

Takefumi Kawakami, Nagoya, JP;

Assignee:

Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/324 (2014.01); C09D 11/322 (2014.01); C09D 11/40 (2014.01);
U.S. Cl.
CPC ...
C09D 11/324 (2013.01); C09D 11/322 (2013.01); C09D 11/40 (2013.01);
Abstract

There is provided a water-based ink for ink-jet recording including: a self-dispersible black pigment; a resin-dispersed chromatic pigment including a resin-dispersed magenta pigment and a resin-dispersed cyan pigment; and water. A ratio (Col/Bk) of a solid content mass (Col) of the resin-dispersed chromatic pigment to a solid content mass (Bk) of the self-dispersible black pigment is in a range of 0.24 to 0.73 and a mean particle diameter of the self-dispersible black pigment is greater than a mean particle diameter of the resin-dispersed chromatic pigment.


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