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. 10, 2001
Filed:
Nov. 09, 1998
Tsuyoshi Kitahara, Nagano, JP;
Eiko Epson Corporation, Tokyo, JP;
Abstract
An ink-jet printing head according to the present invention is constituted so that two reservoirs,and,are formed with each pressure generating chamber,between the two reservoirs, the pressure generating chamber,communicates with at least one reservoir,or,via an ink supply port,or,, adjacent nozzle communicating holes are arranged in approximately opposite positions with the center in the longitudinal direction of the pressure generating chamber,between the adjacent nozzle communicating holes and arranged zigzag with the adjacent nozzle communicating holes shifted in the longitudinal direction of the pressure generating chamber,and the height M of a partition for partitioning the nozzle communicating hole,or,which is a through hole and the adjacent pressure generating chamber,is approximately equal to the height of a partition N between the pressure generating chambers,. Hereby, even if the pressure generating chambers are arranged in high density, crosstalk caused by the partition for partitioning the nozzle communicating hole and the adjacent pressure generating chamber can be prevented.