G - Physics – 01 – D
Patent
G - Physics
01
D
101/96.0203
G01D 15/16 (2006.01) B41J 2/09 (2006.01)
Patent
CA 1101045
Docket 6491 FAULT DETECTION AND COMPENSATION CIRCUIT FOR INK JET PRINTER Abstract of the Disclosure An ink jet printer includes a deflection electrode for providing a deflection field, which field will deflect charged ink drops. The power supply and control circuit for the deflection electrode includes a capacitor storage arrange- ment in which a brief short between the deflection electrode and adjacent structure will be compensated by a capacitance which is switched into electrical connection with the deflection electrode only during deflection electrode shorts. The control circuit also monitors the deflection electrode potential and if an electrode short which reduces the electrode potential substantially persists for a period greater than a preselected period of time, the printer will be disabled and printing operations terminated. -1-
306326
Gowling Lafleur Henderson Llp
The Mead Corporation
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