Liquid discharge head

Details Liquid discharge head Liquid discharge head

2011-01-11

2011-01-11

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S047000, C347S056000, C347S094000, C347S027000

Reexamination Certificate

active

07866799

ABSTRACT:
A liquid discharge head includes a substrate which has a heating resistive element for generating a bubble in a liquid, and a first wall member which faces the heating resistive element. A discharge port which discharges the liquid is provided in the first wall member, and an ink channel communicated with the discharge port is formed between the substrate and the first wall member. In the liquid discharge head, the substrate includes a second wall member around the heating resistive element, the second wall member being protruded in a direction toward the discharge port, the first wall member includes a protrusion portion in a surface facing the substrate, the protrusion portion being protruded toward the heating resistive element, and an end portion of the protrusion portion exists in a region in which the second wall member surrounds the heating resistive element.

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