Method and apparatus for continuous ink jet printing with a non-

Details Method and apparatus for continuous ink jet printing with a non- Method and apparatus for continuous ink jet printing with a non-

1994-09-16

1997-07-08

Reinhart, Mark J.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 73, 347 74, B41J 202, B41J 207

Patent

active

056466633

ABSTRACT:
An apparatus and method for producing a stream of ink drops in a continuous ink jet printer having a maximum allowable number of fast satellite drops. An ink, which may be a hot-melt ink in its liquid phase, is pressurized for continuous flow to a nozzle and a rectangular or triangular waveform is generated at a fixed frequency. The waveform is applied to a transducer coupled to the nozzle such that nozzle vibrates and the ink flow is perturbed and discharged from the nozzle as primary drops with satellite drops formed therewith. The harmonic content of the rectangular or triangular waveform is adjusted until the desired number of fast satellite drops suitable for desired image formation are formed in the stream of primary drops. In a preferred embodiment, the desired number of fast satellites is a maximum of three.

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