Method and apparatus for beam displacement in a light beam scann

Details Method and apparatus for beam displacement in a light beam scann Method and apparatus for beam displacement in a light beam scann

Filed on

1969-12-26

Date issued

1991-05-28

Examiner

Arnold, Bruce Y.

Patent Class

Radiant energy

SubClass

Ionic separation or analysis

SubSubClass

Static field-type ion path-bending selecting means

Other Related Categories

350 64, 350486, 250235, G02B, H01J 516

Type

Patent

Status

active

Patent number

050188089

Description

ABSTRACT:
A method and apparatus is provided for line scanning a beam receiving member, wherein a scanning beam is angularly or laterally displaced to compensate for scan line spacing error. The beam is displaced according to error arising from variation (flutter) in the relative motion of the beam and the beam receiving member, or according to error arising from movement of the receiving member while the scanning beam travels to a start of scan position, or both. Embodiments of beam displacement means include a refracting tilt plate, a reflecting tilt plate, a diffracting tilt plate, and a tilt prism.

REFERENCES:
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patent: 3752559 (1973-08-01), Fletcher et al.
patent: 4172259 (1979-10-01), Lowe
patent: 4214157 (1980-07-01), Check, Jr. et al.
patent: 4219704 (1980-08-01), Russell
patent: 4268110 (1981-05-01), Ford
patent: 4635072 (1987-01-01), Conrads et al.
patent: 4755876 (1988-07-01), Dangler
patent: 4779944 (1988-10-01), Ritter et al.
patent: 4803498 (1989-02-01), Aharon
patent: 4847642 (1989-07-01), Murayama et al.
patent: 4873435 (1989-10-01), One et al.
Urbach et al., Laser Scanning for Electronic Printing, Proc. of the IEEE, vol. 70, No. 6, Jun. 1982, pp. 597-618.
IBM Technical Disclos. Bulletin, vol. 22, No. 9, Feb. 1980.

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