Dual motion scanning method and apparatus therefor

Facsimile and static presentation processing – Facsimile – Picture signal generator

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358488, 358498, 399396, H04N 104

Patent

active

056870108

ABSTRACT:
A scanner device, and the method it embodies, for scanning a document. The scanning includes a pre-scan and a subsequent main scan, with the pre-scan generating data related to the document. The scanner device includes: a scanning assembly having a platen against which the document is positioned and a mobile portion movable along the platen; a document moving device for moving a document in a first direction onto the platen; a mobile-portion-moving device for moving the mobile portion of the scanning assembly in a second direction opposite to the first direction; and a controller for controlling the document moving device and the mp-moving device, and for controlling the scanning assembly to scan the document while the document and the portion of the scanning assembly are both moving. This, for example, substantially reduces instances in which the mobile portion is moving without scanning taking place. When incorporated into a copier device, the controller controls the mobile-portion-moving device and the scanning assembly to perform a main scan as a function of the pre-scan. Such a copier has a reproducing device for reproducing a document based upon an image generated during the main scan.

REFERENCES:
patent: 3754822 (1973-08-01), Melrose
patent: 4611903 (1986-09-01), Fukushi
patent: 4803561 (1989-02-01), Kubota
patent: 5231513 (1993-07-01), Yokobori et al.
patent: 5241346 (1993-08-01), Ide et al.
patent: 5280368 (1994-01-01), Fullerton
patent: 5444555 (1995-08-01), Ono
"Patent Abstracts of Japan", vol. 18, No. 657, (P-1842), Dec. 13, 1994 & JP-A-62, 058724, (Fuji Xerox Co., Ltd.), Sep. 16, 1994.

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