Image recording apparatus with a laser optical unit

Details Image recording apparatus with a laser optical unit Image recording apparatus with a laser optical unit

1992-04-29

1993-05-18

Pendegrass, Joan H.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

359641, G02B 2610, H01S 318, G03G 1504

Patent

active

052125017

ABSTRACT:
An image recording apparatus wherein a laser diode which is disposed on a focal point of a micro Fresnel lens emits a laser beam and the laser beam is collimated by the Fresnel lens and scanned on a photosensitive drum by a polygonal mirror and an f.theta. optical system. A change in temperature of the laser diode does not result in such serious defocus as to cause practical problems.

REFERENCES:
patent: 4925262 (1990-05-01), Yamagishi et al.
Microcollicated Lazer Diode with Low Wavefront Aberration by S. Ogata et al. IEEE Photonics Technology Letters vol. 1, No. 11, Nov. 1989, pp. 354-355.

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