Incremental printing of symbolic information – Ink jet – Controller
Patent
1998-06-30
2000-08-01
Barlow, John
Incremental printing of symbolic information
Ink jet
Controller
347 11, B41J 2938
Patent
active
060956305
ABSTRACT:
An ink-jet printer and a drive method for driving a recording head of an ink-jet printer are provided for controlling a size and a velocity of an ejected ink droplet. The ink-jet printer includes a droplet outlet orifice through which an ink droplet is ejected, an ink chamber communicating with the outlet orifice, an ink feed duct for feeding ink to the ink chamber, and a piezoelectric element for expanding and contracting the ink chamber in response to an applied voltage. A process for ink ejection includes a first step in which a meniscus in the outlet orifice is retracted towards the ink chamber by expanding the ink chamber, a second step in which the meniscus is moved towards the orifice by filling the chamber with ink, and a third step in which an ink droplet is ejected by contracting the ink chamber. The size and the velocity of the ink droplet ejected in the third step are controlled by controlling a position and a velocity of periodic travel of the meniscus at a start point of the third step.
REFERENCES:
patent: 4646106 (1987-02-01), Howkins
patent: 5689291 (1997-11-01), Tence et al.
patent: 5933168 (1999-08-01), Sakai
Horii Shinichi
Ikemoto Yuichiro
Suzuki Kenji
Tanikawa Tooru
Tokunaga Hiroshi
Barlow John
Hallacher Craig A.
Maioli Jay H.
Sony Corporation
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