Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-10-31
2006-10-31
Stephens, Juanita D. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S089000, C347S092000
Reexamination Certificate
active
07128404
ABSTRACT:
The droplet discharge head comprises: a nozzle which discharges droplets of a liquid; a pressure chamber which is in communication with the nozzle and is filled with the liquid to be discharged from the nozzle; and a pressure generation device which generates pressure variation in the liquid inside the pressure chamber and causes the droplets to be discharged from the nozzle, wherein: the pressure chamber has a substantially triangular planar shape; the pressure chamber is provided with a first conduit which conducts the liquid from the pressure chamber to the nozzle, a second conduit which causes the liquid to flow into the pressure chamber, a third conduit which drains the liquid in the pressure chamber to exterior of the pressure chamber, and a switching device which opens and closes a flow channel in at least one of the second and third conduits; and the first, second and third conduits are connected to the pressure chamber at positions in vicinity of different vertices of the substantially triangular shape, respectively.
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Birch & Stewart Kolasch & Birch, LLP
Fuji Photo Film Co. , Ltd.
Stephens Juanita D.
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