Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-05-23
2006-05-23
Shah, Manish (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S061000, C347S065000
Reexamination Certificate
active
07048358
ABSTRACT:
The present invention provides a liquid discharge head and a method for manufacturing such a head, in which a discharging speed of a liquid droplet can be increased, a discharging amount of the liquid droplet can be stabilized and discharging efficiency of the liquid droplet can be enhanced. The liquid discharge head comprises a heater, an element substrate on which the heater is provided, a nozzle including a discharge port portion having a discharge port for discharging the liquid droplet and a bubbling chamber and a supply path for supplying the liquid to the bubbling chamber and a supply chamber for supplying the liquid to the nozzle and an orifice substrate and, the bubbling chamber includes a first bubbling chamber and a second bubbling chamber above the first bubbling chamber and the discharge port portion is communicated with the second bulling chamber via a stepped portion and a side wall of the second bubbling chamber is converged toward the discharge port with inclination of 10 to 45 degrees and the nozzle is provided with a control portion comprised of a stepped portion in the flow path in the vicinity of the bubbling chamber and a maximum height of the flow path is smaller than a height up to a lower surface of the discharge port portion.
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Hiyama Wataru
Kubota Masahiko
Fitzpatrick ,Cella, Harper & Scinto
Mruk Geoffrey S.
Shah Manish
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