Method and apparatus of detecting deviation of scanning line of

Details Method and apparatus of detecting deviation of scanning line of Method and apparatus of detecting deviation of scanning line of

1992-06-22

1993-09-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

358481, H01J 314, H04N 140

Patent

active

052451810

ABSTRACT:
Beam position sensors detect deviations of a light beam from target positions defined at both sides of a recording drum. Predicted total deviations of light beam from the target positions are calculated as a function of beam position signals detected by the beam position sensors. A piezoelectric element of a sub-deflector is actuated in response to the predicted total deviations. The light beam deflected by a main deflector scans the target positions on a recording medium.

REFERENCES:
patent: 4310757 (1982-01-01), Check, Jr. et al.
patent: 4694156 (1987-09-01), Swanberg
patent: 4841135 (1989-06-01), Goto et al.
patent: 4983827 (1991-01-01), Ikegaya et al.
patent: 5006705 (1991-04-01), Saito et al.
patent: 5012089 (1991-04-01), Kurusu et al.
patent: 5018808 (1991-05-01), Meyers et al.

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