Optical scanner for image recording apparatus

Details Optical scanner for image recording apparatus Optical scanner for image recording apparatus

1991-05-14

1992-11-03

Ben, Loha

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359206, 250234, 346160, 346108, G02B 2610

Patent

active

051610477

ABSTRACT:
An optical scanner having a deflecting device for reflecting and deflecting a laser beam issued from a light source device with a reflective surface thereof, and image forming optics for focusing the deflected laser beam onto a target surface to form a beam spot. A first aperture is interposed between the light source device and the deflecting device for correcting the diameter of the beam spot to be formed on the target surface. A second aperture is located on an optical axis between the first aperture and the target surface for intercepting, at least in a direction corresponding to subscanning, part of the light diffracted by the first aperture which lies outwardly of the first minimums.

REFERENCES:
patent: 3520625 (1970-07-01), Gillieron et al.
patent: 3787107 (1974-01-01), Sick et al.
patent: 4253724 (1981-03-01), Minoura et al.
patent: 4310757 (1982-01-01), Check, Jr. et al.
patent: 4578688 (1986-03-01), Okuno
patent: 4720632 (1988-01-01), Kaneko
patent: 4722581 (1988-02-01), Hamada et al.

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