Scanner having horizontal synchronizing signal generator with pr

Details Scanner having horizontal synchronizing signal generator with pr Scanner having horizontal synchronizing signal generator with pr

1990-03-14

1992-01-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

359669, H01J 516

Patent

active

050846167

ABSTRACT:
A horizontal synchronizing signal detecting optical system of an optical scanning apparatus includes a light receiving element for receiving light flux deflected by a deflector and converged by a scanning lens outside an effective scanning range. A prism optical system for reducing the diameter of the light flux which is received by the light receiving element at least within a principal scanning direction is provided.

REFERENCES:
patent: 4623225 (1986-11-01), Forkner
patent: 4627690 (1986-12-01), Fantone
patent: 4776654 (1988-10-01), Ishizuka et al.
patent: 4823002 (1989-04-01), Saito
patent: 4828371 (1989-05-01), McCaslin et al.
patent: 4846550 (1989-07-01), Schuma et al.
patent: 4850686 (1989-07-01), Morimoto et al.
patent: 4948233 (1990-08-01), Maruyama
English Abstracts of Japenese Publication Nos. 62-57612, 63-98624 & 63-173010.

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