Method and apparatus for controlling the velocity of ink drops i

Details Method and apparatus for controlling the velocity of ink drops i Method and apparatus for controlling the velocity of ink drops i

1976-11-11

1977-12-13

Miller, Jr., George H.

Recorders

Record receiver deforming

G01D 1800

Patent

active

040632520

ABSTRACT:
In an ink jet printer, drops are generated at a test frequency which is a harmonic of the drop generation rate for printing. If an error in velocity is detected at the test frequency, a coarse correction velocity is made to bring the correct number of drops within the range of one-half the wavelength at the nth drop location relative to a drop detector. Drops are then generated at the printing frequency and a fine correction in the velocity is made if a velocity error is detected.

REFERENCES:
patent: 3787882 (1974-01-01), Fillmore et al.
patent: 3907429 (1975-09-01), Kuhn et al.

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