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:
Apr. 16, 2002
Filed:
Oct. 07, 1998
Masahiro Fujii, Shiojiri, JP;
Shigeo Nojima, Suwa, JP;
Taro Takekoshi, Shiojiri, JP;
Hiroyuki Ishikawa, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An ink jet head that prevents pressure interference between nozzles without incurring an increase in size is provided. A pressure change buffer is provided for preventing pressure interference in this ink jet head can also be easily formed with the desired characteristics. An ink reservoir , orifice , and ejection chambers are formed in a horizontal arrangement between the nozzle plate and cavity plate of this ink jet head . Pressure change buffer for buffering pressure change in the ink reservoir is formed in a first wall , which is part of the wall determining the shape of the ink reservoir . It is therefore possible to prevent pressure interference between nozzles without incurring an increase in size. In addition, the pressure change buffer can be easily formed with the desired operating characteristics.