Liquid ejection head

Details Liquid ejection head Liquid ejection head

2008-12-11

2011-11-22

Mruk, Geoffrey (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

08061809

ABSTRACT:
A liquid ejection head includes a substrate having a supply port through which liquid is supplied and a plurality of energy generating elements provided along the supply port and generating energy for ejecting the liquid, a nozzle plate having nozzles provided therein in correspondence with the energy generating elements, and a channel provided between the substrate and the nozzle plate. The nozzle plate has a groove surrounding the channel. The groove includes a first groove provided in one surface of the nozzle plate at which the nozzle plate is bonded to the substrate, and a second groove provided in another surface of the nozzle plate in which the nozzles are provided. Edges of the first groove have sawtooth shape with a number of very small notches and edges of the second groove are substantially straight.

REFERENCES:
patent: 6106096 (2000-08-01), Komplin
patent: 6799831 (2004-10-01), Inamoto
patent: 1101755 (2003-02-01), None
patent: 1241743 (2006-02-01), None

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