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. 19, 2000
Filed:
Dec. 15, 1997
Hitoshi Minemoto, Kashiwazaki, JP;
Yoshihiro Hagiwara, Kashiwazaki, JP;
Junichi Suetsugu, Kashiwazaki, JP;
Tadashi Mizoguchi, Kashiwazaki, JP;
Hitoshi Takemoto, Kashiwazaki, JP;
Kazuo Shima, Kashiwazaki, JP;
Toru Yakushiji, Kashiwazaki, JP;
Tomoya Saeki, Kashiwazaki, JP;
NEC Corporation, Tokyo, JP;
Abstract
An ink jet recording device comprises a recording head for ejecting pigmented ink in an ink chamber, an ink reservoir for circulating the pigmented ink between the ink chamber and the ink reservoir, and a replenishment tank for replenishing concentrated pigmented ink to the ink reservoir. The replenishment of the concentrated pigmented ink is effected by a piezoelectric element for reducing the volume of the replenishment tank upon receiving a driving signal. The concentration of colored particles in the concentrated pigmented ink is equal to the concentration of the colored particles in the ink droplet ejected from the ink chamber.