Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2005-01-11
2005-01-11
Nguyen, Lamson (Department: 2853)
Incremental printing of symbolic information
Ink jet
Controller
C347S011000, C347S068000, C347S069000, C347S070000, C347S071000, C347S009000, C347S054000
Reexamination Certificate
active
06840595
ABSTRACT:
An ink jet recording apparatus according to the present invention includes a pressure chamber stored with ink, a nozzle communicating with the pressure chamber and capable of discharging the ink from the pressure chamber, and an actuator for increasing and reducing the capacity of the pressure chamber in response to driving signals from a driving signal generator. The driving signal generator successively generate, an expansion pulse for increasing the capacity of the pressure chamber and a contraction pulse for reducing the capacity of the pressure chamber with a timing such that a time lag between the respective centers of the expansion pulse and the contraction pulse matches the resonance period of a meniscus generated in the nozzle by the ink in the pressure chamber. Thus, the ink jet recording apparatus continuously discharges a plurality of ink drops through the nozzle to form a pixel.
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Frishauf Holtz Goodman & Chick P.C.
Liang Leonard
Nguyen Lamson
Toshiba Tec Kabushiki Kaisha
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