Paper sheet conveyance apparatus and image forming apparatus

Details Paper sheet conveyance apparatus and image forming apparatus Paper sheet conveyance apparatus and image forming apparatus

2007-06-29

2010-06-01

Mackey, Patrick (Department: 3653)

Sheet feeding or delivering

Delivering

Optional face or back

C271S186000

Reexamination Certificate

active

07726644

ABSTRACT:
There is described a paper sheet conveyance apparatus and an image forming apparatus, which makes it possible not only to achieve the minimization and the cost reduction of the apparatus; but also to achieve the high-speed conveyance operation of the paper sheet without generating any step out of the stepping motor. The paper sheet conveyance apparatus, includes: a pair of conveyance rollers to convey a paper sheet; and a stepping motor to drive one of the pair of conveyance rollers. At least one of the conveyance rollers is a roller made of aluminum alloy metal. Further, the roller made of the aluminum alloy metal is shaped in a hallow cylinder. Still further, a surface hardening treatment is applied to a circumferential surface of the roller made of the aluminum alloy metal.

REFERENCES:
patent: 2005/0100370 (2005-05-01), Van Den Berg et al.
patent: 2006/0133871 (2006-06-01), Ishida
patent: 2005-350245 (2005-12-01), None

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