Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
INKJET HEAD INSPECTION DEVICE
Document Type and Number:
Japanese Patent JP2012016941
Kind Code:
A
Abstract:

To provide an inkjet head inspection circuit which can easily detect change of capacitance of piezoelectric actuator of an inkjet head through a simple circuitry.

An inkjet head inspection device includes: a scanning part which measures change of capacitance of the piezoelectric actuator being connected with the piezoelectric actuator of the inkjet head; a pulse input part which applies high voltage pulse to the scanning part; a switching part which connects the scanning part with the piezoelectric actuator and the pulse input part or intercepts the connections; and a control part which controls the switching part and connects the scanning part with the piezoelectric actuator and the pulse input part, receives transmission of information over change of capacitance of the piezoelectric actuator by the applied high voltage pulse from the scanning part, and determines presence or absence of abnormalities in the piezoelectric actuator.


Inventors:
LEE HYUN SEOK
Application Number:
JP2010257452A
Publication Date:
January 26, 2012
Filing Date:
November 18, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SAMSUNG ELECTRO MECH
International Classes:
B41J2/055; B41J2/045
Domestic Patent References:
JP2006056060A2006-03-02
JPH1199648A1999-04-13
Attorney, Agent or Firm:
Konobu Kato
Takafumi Oshima