Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1992-02-24
1995-05-30
Grimley, A. T.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 79, B41J 2085
Patent
active
054206243
ABSTRACT:
Printing distortions caused by ink stream/charge tunnel misalignment, charge tunnel mis-dimensioning or a variation in drop spacing or changes in ink resistivity are corrected by measuring the actual induction co-efficients for a particular printer. For this purpose, charge sensors located along the ink stream or adjacent the ink catcher detect induced charges from which the induction co-efficients are calculated by a programmable controller. These co-efficients are used to adjust the charge tunnel voltages to reduce or eliminate printing distortion.
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G. F. Fillmore et al. Drop Charging and Deflection in an Electrostatic Ink Jet Printer, Jan. 1977 pp. 37-47.
R. G. Sweet, High-Frequency Oscillography with Electrostatically Deflected Ink Jets; Mar. 1964.
Elaine Pullen paper on Ink Jet Printing, Mar., 1982.
Braun Timothy
Keur Robert I.
Ortquist Bruce
Dang Thu
Grimley A. T.
Videojet Systems International Inc.
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