Data Products Corporation

Edgar D Sheh

Juan E Lopez

Dung D Do

Joe Lahut

In an ink jet printer having a plurality of ink jet channels which are individually controllable to produce ink dots on a printing medium, crosstalk is reduced by activating each odd numbered channel in alternation with each even numbered channel, while offsetting the orifices of one group of channels from the other to compensate for the time difference between activations, and the voltage supplied to excite the channel transducers is varied as a function of the number of channels simultaneously exited to maintain a fixed excitation voltage across each transducer.

Ink jet nozzle crosstalk suppression

A drive system for driving the transducers of an ink jet print head. A controller determines transducer activation periods during which one or more selected transducers are to be activated. During each transducer activation period a voltage source is activated. A drive circuit receives serial print data from the controller and couples the selected transducers to the voltage source. The voltage source can be provided with a waveshape circuit to produce a desired excitation waveshape.

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Thousand Oaks, CA, United States of America

Edgar D Sheh