Pattern printing apparatus

Details Pattern printing apparatus Pattern printing apparatus

1975-05-01

1977-02-01

Miller, Jr., George H.

Recorders

Record receiver deforming

G01D 1518

Patent

active

040064824

ABSTRACT:
An improved droplet printing apparatus of the type wherein a succession of ink droplets directed at regular intervals along the same flight path may be individually charged to one of a plurality of charge levels by application of a voltage waveform of constant period to groups of drops. Each charged drop is deflected from the common flight path by passage through an electric field, to an extent dependent on the charge carried so that during relative motion between the apparatus and a surface to be printed ink drops may be deposited on the surface in successive rows extending transversely to the direction of relative motion; all ink drops not being required for deposition being directed into a drop intercepting means. The improvement comprises the provision of means for introducing a delay between adjacent voltage waveforms and means for directing all drops formed during such delay into the drop intercepting means.

REFERENCES:
patent: 3298030 (1967-01-01), Lewis et al.
patent: 3588906 (1971-06-01), Van Brimer
patent: 3739395 (1973-06-01), King
patent: 3911818 (1975-10-01), MacIlvane

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