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:
Jun. 10, 2008

Filed:

Dec. 19, 2005
Applicants:

Tomoyo Hamajima, Nagoya, JP;

Masaya Fujioka, Nagoya, JP;

Ryuji Kato, Aisai, JP;

Noriatsu Aoi, Ichinomiya, JP;

Narumi Koga, Nagoya, JP;

Narumi Kawai, Nagoya, JP;

Shunichi Higashiyama, Yotsukaichi, JP;

Inventors:

Tomoyo Hamajima, Nagoya, JP;

Masaya Fujioka, Nagoya, JP;

Ryuji Kato, Aisai, JP;

Noriatsu Aoi, Ichinomiya, JP;

Narumi Koga, Nagoya, JP;

Narumi Kawai, Nagoya, JP;

Shunichi Higashiyama, Yotsukaichi, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/00 (2006.01); C09D 11/02 (2006.01); B41J 2/01 (2006.01);
U.S. Cl.
CPC ...
Abstract

A water-based ink set for ink-jet recording is provided. According to this ink set, graininess in a low density printed part can be reduced without reducing a color reproduction range in red and magenta directions in a high density printed part. In addition, the color reproduction range in the red direction can be extended to improve the vividness of red color. The water-based ink set for ink-jet recording includes a magenta ink and a red ink. The magenta ink is a light magenta ink having a lightness (L*) of about 50 or more in the L*a*b* colorimetric system. Preferably, the ink set further includes a light cyan ink having a lightness (L*) of about 60 or more and a blue ink and/or a green ink.


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