Title: Bi-directional optical scanning

Abstract: An optical document scanning device minimizes the time period between the end of one page scan and the beginning of the next page scan by page scanning in opposite directions during successive scan cycles. During each scan cycle, the optical image of the document is converted into a serial electric signal which is arranged by appropriate logic and storage devices so as to be presented to an output device, such as a printer, in a uniform page scan direction, e.g. top to bottom, regardless of the direction of page scan input.

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Inventors: Dali, George J. (Rochester, NY, US)

Application Number: 820487
Filing Date: 1977-07-29
Publication_date: 1979-04-24
Assignee: Eastman Kodak Company (Rochester, NY)
Primary Class(es): 358/494 348/324, 358/483
Other Classes:
US Patent Ref:

RE28016	May, 1974	Koizumi	355/65.
3524928	Aug, 1970	Hoskins	355/66.
3528738	Sep, 1970	Hodges	355/70.
3830972	Aug, 1974	McHugh et al.	358/213.
3886371	May, 1975	Lloyd	358/285.

Other Refs:
Primary Examiner: Griffin, Robert L.
Assistant Examiner: Coles, Edward L.
Attorney: Kurz; Warren W.