Polygon facet error effects elimination in multi-pass color syst

Details Polygon facet error effects elimination in multi-pass color syst Polygon facet error effects elimination in multi-pass color syst

1995-08-03

1998-01-20

Edun, Muhammad N.

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Continuous consecutive storage or retrieval of interrupted...

369125, G11B 700

Patent

active

057107513

ABSTRACT:
An imaging system for forming multiple superimposed image exposure frames on a photoconductive member moving in a process direction including a rotating polygon having a plurality of facets. A raster output scanner forms a plurality of scanlines in a transverse direction across the photoconductive member by reflecting modulated beams from the rotating polygon. A control provides a start of scan (SOS) signal for each of the facets of the rotating polygon, determines the facet related to the first scanline of a first image exposure frame on the photoconductive member, and initiates the first scanline of each succeeding superimposed image exposure frame on the photoconductive member in relation to the facet related to the first scanline of the first image exposure frame. Similarly, a time period measurement between a given facet occurrence to the same given facet repeat occurrence, relative to subsequent full revolutions of the polygon, provides an `error free` electronic representation of the speed of the polygon.

REFERENCES:
patent: 5208796 (1993-05-01), Wong et al.
patent: 5237521 (1993-08-01), Raj et al.
patent: 5268891 (1993-12-01), Yanagidate
patent: 5548114 (1996-08-01), Van Rosmalen et al.

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