Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1998-12-17
2000-11-07
Barlow, John
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 64, B41J 2135
Patent
active
061426067
ABSTRACT:
An ink jet recording head comprises ink paths communicated with ink discharge ports for discharging ink, and heat generating portions arranged on the inner wall faces of the ink paths for generating thermal energy utilized for discharging ink from the discharge ports. For this ink jet recording head, liquid-repellent treatment is processed only on the regions that correspond to the heat generating portions of the inner wall faces of the ink paths. With the liquid-repellent treatment processed only on the regions corresponding to the heat generating portions on the inner wall faces of the ink paths, it is made difficult for the refractory substances that may be brought about by the decomposition of colorant or the like contained in ink to be fixed on the regions corresponding to the heat generating portions. As a result, the heat of each heat generating device is transferred to ink evenly to make stable ink discharges obtainable for the provision of recorded images in higher quality.
REFERENCES:
patent: 4368476 (1983-01-01), Uehara et al.
patent: 4596994 (1986-06-01), Matsuda et al.
patent: 5187499 (1993-02-01), Murakami
patent: 5729261 (1998-03-01), Burke et al.
Kasamoto Masami
Kitani Masashi
Koyama Shuji
Kubota Masahiko
Barlow John
Canon Kabushiki Kaisha
Mahoney Helen
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