Method and apparatus for paper feeding capable of handling multiple paper cassettes
US6161829A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1999 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Feb 19, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2511/51
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A paper feed apparatus which is capable of avoiding an erroneous transfer of recording sheets includes a plurality of selectable paper handling mechanisms and a controller. The paper handling mechanisms include a base plate storing recording sheets, an elevator moving the base plate, a first detector detecting whether an uppermost-positioned paper sheet of the recording sheets is positioned at a predetermined paper feed position, a feed roller rotating in a paper feed direction, a separation roller in contact with the feed roller with a reverse driving force, a pick-up roller transferring an uppermost-positioned sheet to a nip portion between the feed and separation rollers, a pushing member pushing the separation roller to contact the feed roller, and a release member releasing the separation roller from contact with the feed roller. The controller controls the elevator of a selected paper handling mechanism to move the recording sheets stacked thereon so that an uppermost-positioned paper sheet of recording sheets is at the predetermined paper feed position using the first detector, and controls each elevator other than the elevator of the selected paper handling mechanism to mov…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.