G - Physics – 01 – D
Patent
G - Physics
01
D
101/96.02
G01D 15/18 (2006.01) B41J 2/115 (2006.01)
Patent
CA 1201930
Abstract of the Disclosure An ink jet printer control circuit is disclosed in which provision is made for production of drop clock signal pulses for application to the electromechanical drop stimulation transducer of the printer. Print enable pulses are provided by a state controller means to the charge electrode driver of the printer so as to permit selective charging of drops produced by the jet drop stream. An edge detector means is responsive to the leading edge of each pulse in the drop clock signal pulse train to provide an edge detection pulse. Additionally, an encoder arrangement provides a train of synchronization pulses, each such pulse signifying an increment of movement of the print receiving medium. The state controller responds to the edge detection pulses and to the synchronization pulses and provides a print enable pulse upon receipt of an edge detection pulse next following receipt of a synchronization pulse. The state controller means includes three flip-flops which are sequentially actuated so that a print enable pulse is provided only after receipt of at least two edge detection pulses prior to each synchronization pulse.
422525
Mcjohnson Robert B.
Paranjpe Suresh C.
Gowling Lafleur Henderson Llp
The Mead Corporation
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