Image forming apparatus with frequency corrector

Details Image forming apparatus with frequency corrector Image forming apparatus with frequency corrector

1994-05-13

1997-03-11

Reinhart, Mark J.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347235, H04N 121

Patent

active

056106513

ABSTRACT:
A scanning time after a detection signal from a first laser beam detection sensor is inputted until a detection sensor from a second laser beam detection sensor is inputted by a counter, flip-flops, a corrected write frequency f1 is computed by a control circuit from a value T1 corresponding to the measured scanning time and a function F (T1) for computing a correction factor using the basic write frequency f0 and the value T1 above and through the equation of "f1=f0.times.F (T1)", and the write clock frequency is corrected by a clock generation circuit, thus the write clock frequency being controlled according to a change in the scanning speed.

REFERENCES:
patent: 4760251 (1988-07-01), Shimada et al.
patent: 4951065 (1990-08-01), Okino
patent: 4962981 (1990-10-01), Murakami et al.

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