Ink jet head, method for driving the same, and ink jet...

Details Ink jet head, method for driving the same, and ink jet... Ink jet head, method for driving the same, and ink jet...

2007-02-06

2007-02-06

Stephens, Juanita D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S064000

Reexamination Certificate

active

11012288

ABSTRACT:
An ink jet head base body in which a heat accumulation layer, a heater generating heat energy used for discharging ink, and a protection film protecting the heater are sequentially formed on a substrate. The ink jet head base body is characterized in that a total thickness of a portion above from the heater in the protection film ranges from 0.2 μm to 0.6 μm, a heat resistance value of the portion above from the heater in the protection film ranges from 5×10−9m2·K/W to 50×10−9m2·K/W, and the heat resistance value of a portion below from the heater in the heat accumulation layer is not lower than double the heat resistance value of the portion above from the heater in the protection film.

REFERENCES:
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patent: 6224191 (2001-05-01), Saito et al.
patent: 6406112 (2002-06-01), Oikawa
patent: 6435660 (2002-08-01), Ozaki et al.
patent: 2003/0081076 (2003-05-01), Park et al.
patent: 0 576 017 (1993-12-01), None
patent: 2001-171127 (2001-06-01), None
patent: 2002-11886 (2002-01-01), None
Patent Abstracts of Japan, vol. 2003, No. 09, Sep. 3, 2003 (JP 2003-127379, May 8, 2003).

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