Sheet feeding and flattening apparatus
US5265856A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 1993 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | May 28, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2301/51
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet feeder, such as recirculating document handler for a copying machine, is provided with movable sheet flattening guide arms (31) for flattening out upturned sheet corner dog-ears in the leading edge of a document sheet (13A) as each sheet is fed from the stacking tray (12) of the document handler. The guide arms (31) are located adjacent to and preferably behind the front wall (29) of the tray and, as a document is fed beneath the wall, they automatically move out transversely along the leading edge of the document to flatten it, particularly at the corners (13B), thereby enabling dog-eared or curled documents to be fed without becoming jammed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.