Skew and bow correction system for an image scanner

Details Skew and bow correction system for an image scanner Skew and bow correction system for an image scanner

1991-09-27

1992-10-06

Grimley, A. T.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

359211, 359219, G01D 942

Patent

active

051536080

ABSTRACT:
A skew and bow correction system for a line of beam scanning from a source across a photosensitive surface comprises at least one optical element, having an axis along the line of beam scanning. The principal plane of the optical element at the midpoint of the line of beam scanning is positioned at a first angle relative to the surface, and the principal plane of the optical element at each end of the scan line is oriented relative to the first angle at a twist angle along the axis. The value of the first angle is related to the skew and the bow of the scan line on the surface, and the values of the twist angles are related to the skew of the scan line on the surface.

REFERENCES:
patent: 4040096 (1977-08-01), Starkweather
patent: 4084881 (1978-04-01), Hirabayashi et al.
patent: 4152052 (1979-05-01), Lessman
patent: 4804981 (1989-02-01), Prakash et al.
patent: 4847642 (1989-07-01), Murayama et al.
patent: 4866459 (1989-09-01), Tokita et al.
patent: 4956650 (1990-09-01), Allen et al.
patent: 5018808 (1991-05-01), Meyers et al.
patent: 5055860 (1991-10-01), Bannai

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