Printer sheet feeding path idler rollers biased mounting system

Details Printer sheet feeding path idler rollers biased mounting system Printer sheet feeding path idler rollers biased mounting system

2005-02-22

2005-02-22

Bollinger, David H. (Department: 3653)

Sheet feeding or delivering

Feeding

By means to convey sheet

C267S155000

Reexamination Certificate

active

06857631

ABSTRACT:
A sheet feeding system in which the idler roller shafts are loosely mounted between opposing side walls of a slot for limited movement relative to their mating sheet feeding rollers, and spring biased theretowards to provide sheet feeding nips with the desired normal force, wherein the spring biasing is nonsymmetrical to additionally provide an orthogonal spring biasing of the idler shafts towards only one of the side walls of their mounting slots. This nonsymmetrical spring biasing may be provided by a torsion spring with a central coil wrapped around the idler shaft and extending legs anchored in nonsymmetrical anchoring positions and/or with nonsymmetrically shaped legs.

REFERENCES:
patent: 4850584 (1989-07-01), Watashi
patent: 5265869 (1993-11-01), Morita
patent: 5600426 (1997-02-01), Gramlich et al.
patent: 5926935 (1999-07-01), Mizuta et al.
patent: 6173952 (2001-01-01), Richards et al.
patent: 6336629 (2002-01-01), Carter et al.
patent: 6619658 (2003-09-01), Shiau

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