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. 31, 2013
Filed:
Sep. 10, 2009
Hitomi Sadohara, Nagoya, JP;
Hiromitsu Sago, Tokai, JP;
Yuko Iwamura, Nagoya, JP;
Akiko Miyajima, Aichi-ken, JP;
Hitomi Sadohara, Nagoya, JP;
Hiromitsu Sago, Tokai, JP;
Yuko Iwamura, Nagoya, JP;
Akiko Miyajima, Aichi-ken, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
An evaluation method for evaluating a pigment ink for ink-jet recording used together with a dye ink and containing a pigment and water includes an aggregation property evaluation method for the pigment in which 10 parts by weight of an aqueous sodium chloride solution is added to 100 parts by weight of the pigment ink; the evaluation method including first aggregation property evaluation adding an X wt % aqueous sodium chloride solution; and second aggregation property evaluation adding a Y wt % aqueous sodium chloride solution; wherein concentrations of the aqueous sodium chloride solutions are set to fulfill the following condition in the first and second aggregation property evaluations: 1.0≦X<Y≦2.5. The optical density of a printed matter and the dispersion stability of the pigment when the pigment ink is brought in contact with the dye ink can be easily evaluated before the printing.