Ink jet recording head

Details Ink jet recording head Ink jet recording head

2011-01-04

2011-01-04

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S014000, C347S060000

Reexamination Certificate

active

07862157

ABSTRACT:
An ink jet recording head includes ejection resistors for generating thermal energy for ejecting ink; warming resistors for generating thermal energy for heating the ink; ejection outlets, provided correspondingly to the ejection resistors, for ejecting the ink; and a recording element substrate provided with ink flow paths provided correspondingly to and for supplying the ink to the ejection outlets, the ejection resistors, the warming resistors, a first ejection outlet array portion including the ejection outlets, and a second ejection outlet array portion including the ejection outlets. An amount of one ink droplet to be ejected from an ejection outlet of the first ejection outlet array portion is different from that from an ejection outlet of the second ejection outlet array portion. The warming resistors are formed above the recording element substrate through the ejection resistors and an insulating layer with respect to a lamination direction of the recording element substrate and are disposed between the ejection resistors and the ink flow paths. The warming resistors include a first warming resistor disposed at the first ejection outlet array portion with a larger ejection amount and a second warming heat generating resistor disposed at the second ejection outlet array portion with a smaller ejection amount.

REFERENCES:
patent: 5191360 (1993-03-01), Pohlig
patent: 6315396 (2001-11-01), Ozaki et al.
patent: 6457794 (2002-10-01), Tajika et al.
patent: 3-5151 (1991-01-01), None
patent: 4-506481 (1992-11-01), None
patent: 5-31905 (1993-02-01), None
patent: 10-774 (1998-01-01), None
patent: 10-776 (1998-01-01), None

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