Patent Number: 8,876,263

Title: Liquid ejection head

Abstract: A liquid ejection head has a plurality of pressure chambers communicating with respective ejection ports and a plurality of hollow spaces arranged around the pressure chambers in a piezoelectric block which is produced by laminating a plurality of piezoelectric plates made of a piezoelectric material. Each of the plurality of piezoelectric plates has a plurality of first grooves on a first surface and a plurality of second grooves on a second surface opposite to the first surface. The plurality of piezoelectric plates are laminated so as to put the first surfaces or the second surfaces of adjacent piezoelectric plates into contact with each other such that the pressure chambers are formed as the first grooves of the paired first surfaces are placed vis-a-vis and the hollow spaces are formed as the second grooves of the paired second surfaces are placed vis-a-vis.

Inventors: Sasagawa; Naoto (Kawasaki, JP), Nakakubo; Toru (Kawasaki, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: B41J 2/045 (20060101)

Expiration Date: 2019-11-04 0:00:00