Control system for aspect ratio and magnification of a raster ou

Details Control system for aspect ratio and magnification of a raster ou Control system for aspect ratio and magnification of a raster ou

1994-11-14

1996-06-25

Envall, Jr., Roy N.

Boots, shoes, and leggings

347261, G05B 1902

Patent

active

055306420

ABSTRACT:
A control system for a ROS scanner in which the aspect ratio and magnification of an image is controlled by precise, real-time control of the relative velocities of the polygon mirror and the photoreceptor. Values related to monitored measurements of polygon mirror and photoreceptor velocity are mathematically combined with a reference clock value and other factors to yield real-time control signals. The control signals operate the polygon and photoreceptor motors to obtain a desired magnification and aspect ratio of images created on the photoreceptor.

REFERENCES:
patent: 4734715 (1988-03-01), Shiraishi
patent: 4807156 (1989-02-01), Parisi
patent: 4975626 (1990-12-01), Yagi et al.
patent: 5237521 (1993-08-01), Raj et al.
patent: 5239313 (1993-08-01), Marko et al.
patent: 5253085 (1993-10-01), Maruo et al.
patent: 5381165 (1995-01-01), Lofthus et al.

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