Rotating ink jet printing apparatus

Details Rotating ink jet printing apparatus Rotating ink jet printing apparatus

1980-08-18

1981-12-29

Miller, Jr., George H.

Recorders

Record receiver deforming

346140R, G01D 1518

Patent

active

043085431

ABSTRACT:
Wherein a plurality of ink jet nozzles are carried on a rotatable disklike member so that ink is ejected in a stream of droplets radially from each nozzle. Ink droplets are charged in a binary manner (i.e. charged or not charged) by a fixed array of charging members which are electrically switched so as to track a specific jet. Fixed deflection members delete charged drops from the ink droplet stream leaving neutral droplets unaffected. Print receiving material is wrapped with a slight skew around a stationary cylindrical shell and moved along a slight helical path on the cylindrical shell's surface. The shell encloses and surrounds the rotating disklike member, the fixed charging members, the fixed deflecting members and a suitably disposed fixed ink catcher. The neutral droplets of ink are adapted to pass through a bank gap in the cylinder such that the circular ink jet droplet scan effectively becomes a helical scan on the moving paper so as to produce line by line printing.

REFERENCES:
patent: 3373437 (1968-03-01), Sweet et al.
patent: 3864696 (1975-02-01), Fischbeck
patent: 3971040 (1976-07-01), Skala
patent: 4210919 (1980-07-01), Aiba

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