Ink jet record head

Details Ink jet record head Ink jet record head

2005-12-06

2005-12-06

Meier, Stephen D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S044000, C347S047000

Reexamination Certificate

active

06971736

ABSTRACT:
To provide an ink jet record head having a nozzle shape capable of, when further rendering liquid droplets smaller, reducing flow resistance in a discharge direction and preventing reduction in discharge speed of ink droplets.An opening face on a bubbling chamber11side of a second discharge port portion10is shaped so that a length in a direction parallel with an arrangement direction of discharge ports4is longer than the length in the direction vertical thereto, and the opening face on the discharge port portion side is also a sectional shape congruent with the opening face on the bubbling chamber11side. In the drawing, a cross section cut in a direction approximately parallel with the surface on which heaters1are formed of the second discharge port portion10is an approximately rectangular shape.

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