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:
Feb. 04, 2003
Filed:
Oct. 26, 1999
Atsushi Komatsu, Katano, JP;
Akihiko Namba, Osaka, JP;
Masayuki Okano, Kawanishi, JP;
Yosihiro Tomita, Osaka, JP;
Osamu Kawasaki, Kyotanabe, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A variable dot ink-jet printer having an ejection flow passage with a decrease in sectional area from an ejection port toward the interior of the flow passage and up to a boundary. A draw-in part draws an ink front position in the interior of the flow passage. A push-out part pushes out the ink front position outside the flow passage. When ejecting a small ink drop, the ink front position is drawn at a place having an increase in sectional area by the draw-in part. The ink is pushed outward by the push-out part at such a speed as to exit from an edge of an area of the boundary on the ejection port side.