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. 01, 2009
Filed:
Oct. 26, 2006
Yoshikazu Takahashi, Nagoya, JP;
Masatomo Kojima, Ichinomiya, JP;
Hiroyuki Ishikawa, Nisshin, JP;
Masaharu Ito, Nagoya, JP;
Shin Hasegawa, Nagoya, JP;
Koichiro Hara, Nagoya, JP;
Yasuhiro Sekiguchi, Nagoya, JP;
Akira Iriguchi, Ichinomiya, JP;
Yoshikazu Takahashi, Nagoya, JP;
Masatomo Kojima, Ichinomiya, JP;
Hiroyuki Ishikawa, Nisshin, JP;
Masaharu Ito, Nagoya, JP;
Shin Hasegawa, Nagoya, JP;
Koichiro Hara, Nagoya, JP;
Yasuhiro Sekiguchi, Nagoya, JP;
Akira Iriguchi, Ichinomiya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-Shi, JP;
Abstract
An ink-jet head includes pressure chambers arranged in a row in a row-direction, and a manifold flow passage communicated with the pressure chambers and extending in the row-direction. An ink inflow port is formed at one end of the manifold flow passage. The manifold flow passage has a main portion, a connecting portion, and an extended portion which are arranged in this order from a side close to the ink inflow port. The manifold flow passage is communicated with the pressure chambers at the main portion. The main portion has a constant cross-sectional area greater than that of the connecting portion. A cross-sectional area of the extended portion is greater than that of the connecting portion. The pressure wave, generated in the pressure chamber and propagated to the manifold flow passage, can be efficiently attenuated by the manifold flow passage constructed as described above.