Method and related apparatus for performing short and open...

Details Method and related apparatus for performing short and open... Method and related apparatus for performing short and open...

2006-03-21

2006-03-21

Feggins, K. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

07014290

ABSTRACT:
Methods for detecting a short-circuit problem and an open-circuit problem in an ink jet printer. The ink jet printer includes at least an ink jet unit having an input end, a corresponding nozzle, and a control end. The ink jet printer further includes a driving circuit for providing energy to the ink jet unit via the input end. When the ink jet unit receives an ink jet signal via the control end, the ink jet unit can spray ink via the corresponding nozzle according to the energy received via the input end. The short-circuit problem detecting method includes stopping transmitting the ink jet signal to the control end of the ink jet unit, stopping providing energy to the input end of the ink jet unit, and measuring currents flowing through the input end of the ink jet unit.

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patent: 6199969 (2001-03-01), Haflinger et al.
patent: 07-237305 (1995-09-01), None

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