Liquid-jet recording head

Details Liquid-jet recording head Liquid-jet recording head

2007-11-20

2010-10-05

Nguyen, Thinh H (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S040000

Reexamination Certificate

active

07806517

ABSTRACT:
An ink-jet recording head has two kinds of nozzles discharging different volumes of ink-drops. Large nozzles discharging larger ink-drops and small nozzles discharging smaller ink-drops are disposed alternately along a side of a common liquid chamber. The opening area of the large nozzles is larger than that of the small nozzles. Flow paths communicating with the small nozzles are shorter than those communicating with the large nozzles. Since the smaller ink-drops are discharged at higher frequency than the larger ink-drops, printing speed in high-quality recording using mainly the smaller ink-drops is improved.

REFERENCES:
patent: 5208605 (1993-05-01), Drake
patent: 5519423 (1996-05-01), Moritz et al.
patent: 5717448 (1998-02-01), Inada
patent: 6137502 (2000-10-01), Anderson et al.
patent: 6959979 (2005-11-01), Goin et al.
patent: 5-201003 (1993-08-01), None
patent: 2003-508257 (2003-03-01), None

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