Sheet feeder which separates sheets with variable speed...

Sheet feeding or delivering – Feeding – Separators

Reexamination Certificate

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C271S098000

Reexamination Certificate

active

06955348

ABSTRACT:
A sheet feeder has a plurality of sheets supported on an intermediate plate, and feeds sheets separately one by one by attracting them by a suction belt. Air is blown from a blowing duct through an opening toward a side edge of a sheet bundle supported by the intermediate plate in order to handle the sheet bundle, and so as to vary the speed and/or direction of air blown from the opening to reliably handle the sheet bundle, whereby a sheet conveying operation by the suction belt is performed when the speed of air blown on the side edge of the sheet located in the uppermost position bundle is not more than a predetermine value.

REFERENCES:
patent: 2402442 (1946-06-01), Perry
patent: 4596385 (1986-06-01), Silverberg
patent: 5110110 (1992-05-01), Wirz et al.
patent: 5328165 (1994-07-01), Martin
patent: 6298214 (2001-10-01), Koga
patent: 6726200 (2004-04-01), Gohl et al.
patent: 2004/0100013 (2004-05-01), Mathewson
patent: 62-249835 (1987-10-01), None
patent: 6199437 (1994-07-01), None
Max Born, et al., Principles of Optics: Electromagnetic Theory of Propagation Interference and Diffraction of Light, Sixth Edition (1980), Cambridge University Press, pp. 169-170, 213.

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