Sheet feeding apparatus
AssigneeCanon Kabushiki Kaisha
InventorsFumihiko Nakamura, Keizo Sasai
Life of this patent
Estimating the term…
Abstract
A sheet feeding apparatus has a support for supporting sheets, a feed roller disposed at a downstream side of the supported sheets and adapted to feed out the sheet by rotating while contacting with the sheet, and a separation roller disposed at a downstream side of the sheet supporting device in the sheet feeding direction and in a confronting relation to the sheet feed device. A slip device generates slip between the feed roller and the sheet within a predetermined range when the feed roller starts to rotate, thereby preventing the feeding of the sheet and rotating the separation roller in the sheet feeding direction.
Claims17
A sheet feeding apparatus comprising:
- sheet supporting means for supporting sheets;
- a feed roller disposed at a downstream side of the sheets supported by said sheet supporting means in a sheet feeding direction to feed out a sheet by rotating;
- a separation roller disposed at a downstream side of said sheet supporting means in the sheet feeding direction in a confronting relation to said feed roller, said separation roller rotating in a direction reverse to the sheet feeding direction, and said separation roller cooperating with said feed roller to separate a sheet from the sheets fed out from said sheet supporting means by said feed roller one by one;
- and
- slip means to generate slip between said feed roller and the sheet within a predetermined range when said feed roller starts rotating, thereby preventing the feeding of the sheet and rotating said separation roller in the sheet feeding direction.
An image forming apparatus comprising:
- sheet supporting means for supporting sheets;
- a feed roller disposed at a downstream side of the sheets supported by said sheet supporting means in a sheet feeding direction to feed out a sheet by rotating;
- a separation roller disposed at a downstream side of said sheet supporting means in the sheet feeding direction in a confronting relation to said feed roller, said separation roller rotating in a direction reverse to the sheet feeding direction, and said separation roller cooperating with said feed roller to separate a sheet from the sheets fed out from said sheet supporting means by said feed roller one by one;
- slip means provided in said sheet feed to generate slip between said feed roller and the sheet within a predetermined range when said feed roller starts rotating, thereby preventing the feeding of the sheet and rotating said separation roller in the sheet feeding direction;
- and
- an image forming means for forming an image on the sheet separated and fed by said feed roller and said separation roller.
Dependencies are inferred from the claim text.