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.

Date of Patent:
Nov. 13, 2012

Filed:

Apr. 22, 2009
Applicants:

Manabu Numata, Kanagawa, JP;

Hiroshi Ikeda, Kanagawa, JP;

Ken Hashimoto, Kanagawa, JP;

Inventors:

Manabu Numata, Kanagawa, JP;

Hiroshi Ikeda, Kanagawa, JP;

Ken Hashimoto, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 29/393 (2006.01); B41J 29/38 (2006.01);
U.S. Cl.
CPC ...
Abstract

A liquid droplet ejecting apparatus includes a liquid ejecting module and a measurement section. The liquid ejecting module includes a pressure chamber that has a piezoelectric element and an ejecting nozzle, and a supply passage that supplies liquid into the pressure chamber, and the liquid ejecting module configured to eject, from the ejecting nozzles, liquid which is supplied to the pressure chamber through the supply passage. The measurement section measures an admittance or a phase difference between a voltage applied to the piezoelectric element and a current through the liquid ejecting module when the voltage is applied.


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