Method of operating a multi-channel printhead using negative and

Details Method of operating a multi-channel printhead using negative and Method of operating a multi-channel printhead using negative and

1996-08-19

2000-09-26

Barlow, John

Incremental printing of symbolic information

Ink jet

Controller

347 11, B41J 2938

Patent

active

061234052

ABSTRACT:
The selected ink channels of a drop-on-demand ink jet printer are caused to expand and then contract, ejecting ink droplets by the application of unipolar voltages first to selected channels and then to non-selected channels. Further unipolar voltages, delayed in time by 2L/c and scaled by a pressure wave reflection coefficient r of the nozzle, effect prompt cancellation of residual pressure waves so that adjacent channels are ready for actuation with minimum delay.

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