Synchronizing signal generating system for laser scanner

Details Synchronizing signal generating system for laser scanner Synchronizing signal generating system for laser scanner

1989-02-17

1990-10-09

Reynolds, Bruce A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

346108, 346160, 358481, 358494, H04N 104, H04N 123, G01D 1514

Patent

active

049624318

ABSTRACT:
A synchronizing signal generating system for a laser scanner includes a source for emitting a first laser beam for scanning and a second laser beam for synchronization of scans by the first laser beam, a polygonal mirror for causing the first laser beam to scan a medium and for causing the second laser beam to scan a grating which has bright portions and dark portions alternately arranged along a scanning direction of the second laser beam, a converging optical system for converging the second laser beam transmitted through the grating, a light receiving system for receiving the second laser beam converged by the converting optical system and for generating a synchronizing signal and a circuit for controlling the source responsive to the synchronizing signal so as to synchronize a scan timing of the first laser beam. A scan length of the second laser beam measured on the grating is set longer than a scan length of the first laser beam measured on the same plane.

REFERENCES:
patent: 3389403 (1968-06-01), Cottingham et al.
patent: 3999010 (1976-12-01), Oosaka
patent: 4212018 (1980-07-01), Ohnishi et al.
patent: 4293202 (1981-10-01), Ohnishi
patent: 4306242 (1981-12-01), Jeffery
patent: 4358793 (1982-11-01), Hosaka
patent: 4408826 (1983-10-01), Ike
patent: 4429220 (1984-01-01), Noguchi
patent: 4616132 (1986-10-01), Kessler
patent: 4661699 (1987-04-01), Welmers
patent: 4691241 (1987-09-01), Tomohisa
patent: 4739162 (1988-04-01), Ortiz
patent: 4806753 (1989-02-01), Noguchi

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