Optical scanning apparatus

Details Optical scanning apparatus Optical scanning apparatus

1976-05-20

1978-01-03

Miller, Jr., George H.

Recorders

Thermal recording

346108, 350 7, G01D 1510, G01D 942, G02B 2717

Patent

active

040670210

ABSTRACT:
Optical scanning apparatus comprising a source of light, a rotatable reflecting element having a plurality of reflective facets which are inclined to the axis of rotation, a beam expander for deriving a collimated beam of light from the source, this collimated beam being directed at the reflecting element in a direction parallel to its axis of rotation to impinge upon successive facets thereof as it is rotated. The apparatus also includes a support, which may be a system of rollers, for defining a position for a recording element having a surface that requires scanning, a projection lens for focussing the collimated beam as reflected by the reflecting element onto the surface of the recording element, a motor coupled to rotate the reflecting element, so that each facet in turn causes the focussed beam to scan across the surface in one direction, and a drive for moving the recording element substantially perpendicular to the direction of scanning, past said focussed beam.

REFERENCES:
patent: 3154371 (1964-10-01), Johnson
patent: 3441949 (1969-04-01), Rolon
patent: 3701999 (1972-10-01), Congleton et al.
patent: 3758187 (1973-09-01), Thomas et al.
patent: 3809806 (1974-05-01), Walker et al.

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