Electrostatic lens for ink jets

Details Electrostatic lens for ink jets Electrostatic lens for ink jets

1978-12-18

1980-09-23

Anderson, Bruce C.

Radiant energy

With charged particle beam deflection or focussing

Magnetic lens

250398, 346 75, H01J 3712

Patent

active

042245230

ABSTRACT:
An ink jet printer is disclosed employing a row of multiple ink jet nozzles aimed at a moving target or copy sheet. Each nozzle has a separate charging electrode associated with it but all the nozzles share a pair of common deflection plates that divert charged droplets over a shared gutter toward the target. Uncharged droplets go into the gutter. An electrostatic lens is shared by all the nozzles being positioned in the path of the charged droplets deflected toward the target. The lens aligns or focuses charged droplets from all the nozzles to a focus line on the target despite misalignment of nozzles relative to a print line on the target.

REFERENCES:
patent: 2345080 (1944-05-01), Ardenne
patent: 2452919 (1948-11-01), Gabor
patent: 2600129 (1952-06-01), Richards
patent: 3373437 (1968-03-01), Sweet et al.
patent: 3596275 (1971-07-01), Sweet
patent: 3877036 (1975-04-01), Loeffler et al.
patent: 4123760 (1978-10-01), Hou
patent: 4126781 (1978-11-01), Siegel

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