Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2006-08-08
2006-08-08
Feggins, K. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Controller
Reexamination Certificate
active
07086711
ABSTRACT:
An actuator unit is driven with a voltage pulse supplied from a driver IC. The actuator unit can take two states of a first state wherein the volume of a pressure chamber is V1, and a second state wherein the volume of the pressure chamber is V2larger than V1. A state of the actuator unit changes from the first state to the second state and then to the first state again so that ink is ejected through a nozzle connected to one end of the pressure chamber. A pulse width Tw of the voltage pulse to be supplied to the actuator unit is shorter than a pulse width Tmax at which a maximum ejection speed of ink ejected from the nozzle is obtained. Thus, with simplifying a waveform of the voltage pulse, two of large and small ink droplets can be successively ejected in the order of the large and small ink droplets.
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Iwao Naoto
Matsumoto Ayumu
Brother Kogyo Kabushiki Kaisha
Feggins K.
Garcia, Jr. Rene
Kyocera Corporation
Oliff & Berridge PLC.
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