Title: Method and apparatus for merging satellites in an ink jet printing system

Abstract: In an ink jet recorder, a ferrofluid ink is supplied under pressure to a nozzle to form a continuous ink jet stream. The jet stream is subjected to two or more perturbation forces out-of-phase with each other causing the satellites and drops to fast merge. Plural electromagnetic transducers are located at spaced locations along the stream and energized to produce out-of-phase perturbations on the stream. The spacing of the transducers is differentially related to spacing of varicosities or ink drops produced by first transducer. The out-of-phase perturbations can also be obtained using an electromechanical transducer and electromagnetic transducers located out-of-phase or energized out-of-phase with each other.

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Inventors: Helinski, Edward F. (Johnson City, NY, US)
Zable, Jack L. (Vestal, NY, US)

Application Number: 534043
Filing Date: 1974-12-18
Publication_date: 1976-09-07
Assignee: International Business Machines Corporation (Armonk, NY)
Primary Class(es): 347/75 239/102.2, 347/53
Other Classes:
US Patent Ref:

3334351

Aug, 1967

Stauffer

346/75.

Other Refs:
Primary Examiner: Hartary, Joseph W.
Assistant Examiner:
Attorney: Gasper; John S.