Sheet feeder and image forming apparatus having the same

Details Sheet feeder and image forming apparatus having the same Sheet feeder and image forming apparatus having the same

2006-03-21

2006-03-21

Walsh, Donald P. (Department: 3653)

Sheet feeding or delivering

Feeding

Separators

C271S124000, C271S127000

Reexamination Certificate

active

07014186

ABSTRACT:
An inclined separating surface includes an upwardly curved surface that is gradually lowered near the ends, from a middle portion in a sheet width direction as a top. The inclined separating surface holds leading edges of sheets stacked on a sheet holder. At the middle of the inclined separating surface, a sheet separating unit, which extends in a sheet advance direction, is provided so as to protrude from and retract into the inclined separating surface. With this structure, the leading edges of side areas of the sheets do no contact the inclined separating surface before the leading edges of middle areas of the sheets contact the inclined separating surface. Consequently, the leading edges of the middle areas of the sheets are surely applied with separating action by the sheet separating unit.

REFERENCES:
patent: 5145164 (1992-09-01), Kan
patent: 5443251 (1995-08-01), Kan et al.
patent: 5895040 (1999-04-01), Oleksa et al.
patent: 5971390 (1999-10-01), Caspar et al.
patent: 6158733 (2000-12-01), Muraki
patent: 6716254 (2004-04-01), Takeuchi
patent: 08192933 (1996-07-01), None
patent: 2000168980 (2000-06-01), None
patent: A 2001-253580 (2001-09-01), None
patent: A 2001-278507 (2001-10-01), None

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