Facsimile and static presentation processing – Facsimile – Picture signal generator
Patent
1992-11-02
1994-01-18
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Picture signal generator
358497, 358496, 355235, 355233, H04N 104, G03G 1528
Patent
active
052803686
ABSTRACT:
An input scanner provided with a document input, a sheet feeding path for transporting documents to a scanning station and to a document output; a scanning station having a first scanning element, fixed in position relative to the sheet feeding path, and a second scanning element, arranged at a home position for substantially simultaneous duplex scanning of sheets fed along the sheet feeding path, and which is also supported for movement past a scanning platen, each scanning element supporting a full width array of photosensitive sensors with a corresponding optical arrangement for directing light from the document to the sensors, there is provided a dual purpose calibration/baffle member, which in a first position serves as a paper baffle along the sheet feeding path to the scanning station to support sheets at the first scanning element, and in a second position, supports a calibration target at a position for detection by the first scanning element. The calibration/baffle member is mounted on the input scanner frame for movement between the first and second positions, and is provided with a bias arrangement which biases the calibration/baffle member for document scanning operation to the first position. The calibration/baffle member is arranged in the path of movement of the second scanning element, for engagement therewith to move the calibration/baffle member to the second position.
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R. E. Smith, "Automatic Duplex Document Electronic Scanning"; May/Jun., vol. 8, No. 3, 1983, p. 263.
Coles Sr. Edward L.
Costello Mark
Williams Kimberly A.
Xerox Corporation
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