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:
Oct. 23, 2001
Filed:
Jul. 31, 1997
Hideo Hotomi, Nishinomiya, JP;
Keishi Sawada, Amagasaki, JP;
Yasuhiro Sando, Amagasaki, JP;
Kusunoki Higashino, Osaka, JP;
Naoki Matsui, Sakai, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
An ink-jet recording device (,) comprises a first wall member or partition (,) adjacent to an ink material (,) and a second wall member or partition (,) adjacent to an ink material (,). An elasticity of the first wall member (,) is different from that of the second wall member (,). Arranged adjacent to the first and second wall members (,) are first and second piezoelectric members (,), respectively. Once the piezoelectric members (,) are biased, they deform to force the adjacent ink materials through the wall members (,), ejecting ink droplets of different sizes. This ensures the ink-jet recording head to print a halftone image with a high gradation.