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:
Aug. 31, 2004
Filed:
Dec. 23, 1999
Emiko Igaki, Amagasaki, JP;
Toru Ishida, Hirakata, JP;
Masakazu Tanahashi, Osaka, JP;
Hidetomo Nagahara, Ebina, JP;
Kiyohide Amemiya, Fujisawa, JP;
Masahiko Hashimoto, Tokyo, JP;
Masayoshi Miura, Kawasaki, JP;
Masaichiro Tatekawa, Mino, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An ink-jet recording head has nozzles capable of independent ejection and being arranged in high density, in which strength is high, fabricating yield is high, a cost is reduced, ejection efficiency is high, and ejection repeating frequency is high. In this ink-jet recording head, there are two-dimensionally arranged units, in each of which an ink pressure chamber, a partition wall serving as a driving portion, a pressure buffer chamber and a fixed wall are arranged in the same direction.