Device and method for sensing the impact position of an ink jet

Details Device and method for sensing the impact position of an ink jet Device and method for sensing the impact position of an ink jet

1985-08-15

1986-12-23

Goldberg, E. A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 75, G01D 1800

Patent

active

046315500

ABSTRACT:
Information relating to the impact position on a catcher face of a deflected ink jet is used to adjust various parameters of an ink jet printing system, such as the charge voltage, the time between orifice plate stimulation and drop charging, etc., or to check the occurrence of malfunctions such as crooked jets, misregistration between the charge plate and the jets, etc. According to the invention, means integral with the catcher cooperate with the ink flowing on the catcher face to vary an electrical property at said catcher face as a function of the portion of that face which is ink wetted. In one embodiment the jet impact position is derived from an electrical resistance measurement. In another embodiment this position is derived from a capacitance measurement.

REFERENCES:
patent: 3750191 (1973-07-01), Naylor, III
patent: 3769630 (1973-10-01), Hill et al.
patent: 3866237 (1975-02-01), Meier
patent: 3898673 (1975-08-01), Naskell
patent: 4196625 (1980-04-01), Kern
patent: 4250510 (1981-02-01), Dressler

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