Apparatus for scan rotation in image scanning equipment

Details Apparatus for scan rotation in image scanning equipment Apparatus for scan rotation in image scanning equipment

1988-09-19

1990-01-30

Groody, James J.

Facsimile and static presentation processing

Facsimile

Picture signal generator

358474, 358490, H04N 106

Patent

active

048977373

ABSTRACT:
Apparatus for providing controllable scan rotation of the image representation of an original revolving in a drum scanner is disclosed, the apparatus having: illumination means defining an illuminated line segment parallel to the drum revolution axis on at least a portion of the revolving original; and a scanning head moving in parallel to the drum revolution axis in accordance with a predetermined pitch, the scanning head having: imaging apparatus for providing the image of said illuminated line segment; and deflection apparatus providing a scanning beam with a controllable sweeping motion along said illuminated line segment image so as to scan successive points of light thereon during revolution of the drum, the controllable sweeping motion being synchronized with the speed of the drum revolution so as to provide on the portion of the revolving original a locus of scanned points having an oblique angle with respect to the drum axis for rotating the image representation.

REFERENCES:
patent: 4268870 (1981-05-01), Kitamura et al.
patent: 4745487 (1988-05-01), Nishikawa
patent: 4760407 (1988-07-01), Arimoto et al.
patent: 4816920 (1989-03-01), Paulsen
Multiple-Line Interlaced Facsimile Scanning, Richard C. Marshall, Xerox Disclosure Journal, vol. 2, No. 1, p. 17.

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