Liquid ejection device actuator unit and liquid ejection device handpiece

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9604456
APP PUB NO 20160279946A1
SERIAL NO

15077744

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A liquid ejection device actuator unit is fitted to a nozzle unit including a liquid chamber of which an inside volume is variable by deformation of a liquid chamber side diaphragm and an ejection tube which ejects a liquid from the liquid chamber. The liquid ejection device actuator unit includes a movable plate which comes into contact with the liquid chamber side diaphragm, a piezoelectric element which comes into contact with the movable plate at one end of the piezoelectric element in an expansion or contraction direction to deform the movable plate, and a support member which is adhered to the piezoelectric element at other end of the piezoelectric element in the expansion or contraction direction. At least one of a contact portion of the movable plate and the piezoelectric element and a contact portion of the piezoelectric element and the support member is adhered by a hard material containing adhesive in which a hard material with a larger elastic modulus than a hardened adhesive is mixed.

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Patent Owner(s)

  • SEIKO EPSON CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kobayashi, Akio Shiojiri, JP 169 2047

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