Method and apparatus for controlling the electrical charging of

Details Method and apparatus for controlling the electrical charging of Method and apparatus for controlling the electrical charging of

1987-07-20

1989-06-13

Goldberg, E. A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 75, G01D 1800, G01D 1518

Patent

active

048396656

ABSTRACT:
In an ink jet recording apparatus, the generation of insufficiently charged or discharged drops which may occur when a charge controlling signal (print pulse) is switched within a forbidden zone of the period of the drop formation process is avoided. The portion of the drop formation process period, during which the switching is permitted, is determined by detecting the charge carried by trains of drops which are produced by probe charge control signal of varying phase relative to the drop formation process.

REFERENCES:
patent: 3769630 (1973-10-01), Hill et al.
patent: 3769632 (1973-10-01), Julisburger et al.
patent: 4288796 (1981-09-01), Aiba et al.

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