Sheet feeding or delivering – Feeding – Separators
Reexamination Certificate
2005-04-05
2005-04-05
Walsh, Donald P. (Department: 3653)
Sheet feeding or delivering
Feeding
Separators
C492S029000
Reexamination Certificate
active
06874777
ABSTRACT:
A sheet feed roller10includes a shaft member12and an elastomeric layer14provided on the outer circumference of the shaft member12. The shaft member12includes a tubular support16and a pair of shaft sections18extending in the axial direction to define a rotary axis of the shaft member12. The elastomeric layer14is formed of an elastic member separate from the shaft member12, and attached to the outer circumference16ato be conformed with the profile of the support16of the shaft member12. The elastomeric layer14includes a base20and a plurality of micro-structured elements22, each having a three-dimensionally projected shape, formed on the surface20aof the base20. Each of the plurality of micro-structured elements22on the elastomeric layer14is brought into frictional contact at a distal end thereof with the sheet medium and feed the same as the shaft member rotates.
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Working with Flexo, Mueller and MacAdam, Apr. 1989, American Ink Maker vol. 67 No. 4, pp28, 30,32, and 34-35.
Kobayashi Ken-ichi
Nishimura Katsuhiko
Sano Koichi
Yuza Akira
3M Innovative Properties Company
Bower Kenneth
Walsh Donald P.
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