Current switching architecture for head driver of solid ink...

Details Current switching architecture for head driver of solid ink... Current switching architecture for head driver of solid ink...

2005-01-04

2005-01-04

Nguyen, Lamson (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C310S317000

Reexamination Certificate

active

06837561

ABSTRACT:
Circuit architecture for driving piezoelectric transducers with a Head Drive ASIC powered with only regular (constant) power supplies (instead of ramped and shaped power supplies) is disclosed. The circuit architecture consists of current mirroring systems and current switching techniques used to generate the required particular voltage waveforms across the capacitive transducers using only constant (DC) power supplies. There is no need for high voltage switching elements in this approach.

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