Ink jet recording head and recording apparatus

Details Ink jet recording head and recording apparatus Ink jet recording head and recording apparatus

2011-01-04

2011-01-04

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07862159

ABSTRACT:
An ink jet recording head includes a recording element substrate including an ejection outlet array consisting of a plurality of arranged ejection outlets for ejecting ink, a plurality of heat generating elements, provided correspondingly to the ejection outlets, for generating thermal energy for ejecting the ink, and a supply port, formed along the ejection outlet array in an elongated hole-like shape, for supplying the ink to the ejection outlets; and a supporting member, having a supply flow passage communicating with the supply port, for supporting the recording element substrate. The supporting member is provided with at least two beams each extending over an opening of the supply flow passage in a widthwise direction of the supply flow passage and having a width W with respect to a longitudinal direction of the supply flow passage. At least two beams described above are disposed within a range from a center of the supply flow passage with respect to the longitudinal direction toward both longitudinal end sides of the supply flow passage by 2.5 W for each of the end sides and are spaced 2 mm or more apart.

REFERENCES:
patent: 6652702 (2003-11-01), Miyazaki et al.

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