Paper sheet conveyance apparatus and image forming apparatus
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United States of America Patent
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Jun 1, 2010
Issued Date -
N/A
app pub date -
Jun 29, 2007
filing date -
Jul 21, 2006
priority date (Note) -
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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.
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