Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2005-10-24
2010-11-02
Stephens, Juanita D (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S068000
Reexamination Certificate
active
07824015
ABSTRACT:
An ink jet writing head includes a pressurized ink chamber provide with at least one ink nozzle that is closed by a mobile valve body. A piezoelectric valve actuating device that is electrically connected to a control device drives the valve body with reciprocating motions. The valve body is held by a closing spring in the closing position thereof and is connected to a connecting rod in a driving manner. At least one curved spring strip engages with the end of the connecting rod, located at a distance from the valve, the spring strip being supported on the valve-side end thereof, opposite the ink chamber. The connecting rod is subjected to the tractional prestress of a tension spring. At least one piezoelctric element is applied to the spring strip, the piezoelectric element being controlled by the control device in such a way as to perform tractile movements.
REFERENCES:
patent: 3322142 (1967-05-01), Baumann
patent: 4576111 (1986-03-01), Slomianny
patent: 4875058 (1989-10-01), Vonasek
patent: 5602575 (1997-02-01), Pauly
patent: 19528809 (1997-02-01), None
patent: 01-018643 (1989-01-01), None
patent: 01018643 (1989-01-01), None
patent: 94/08794 (1994-04-01), None
patent: 98/56585 (1998-12-01), None
International Search Report for corresponding International Application PCT/EP2005/011392.
International Report on Patentability for corresponding International Application PCT/EP2005/011392.
REA Elektronik GmbH
Stephens Juanita D
WRB-IP LLP
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