Image forming apparatus and method for removal of high frequency

Details Image forming apparatus and method for removal of high frequency Image forming apparatus and method for removal of high frequency

1990-07-20

1992-02-04

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

358494, H01J 314

Patent

active

050862235

ABSTRACT:
The characteristics of the component reflecting surfaces of a polygonal-prism mirror are determined by detecting the times of scanning between two given points on each of the component reflecting surfaces. The times for starting the delivery of the output of a video signal for imposition on the scanning lines on the component reflecting surfaces are severally calculated based on the characteristics mentioned above. The video clock is issued with prescribed time cycles based on the times for starting the delivery of output found by the arithmetic operation mentioned above.

REFERENCES:
patent: 3999010 (1976-12-01), Oosaka et al.
patent: 4694156 (1987-09-01), Swanberg
patent: 4872065 (1989-10-01), Isono et al.
patent: 4920430 (1990-04-01), Isomo et al.
patent: 4962981 (1990-10-01), Muratami et al.

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