Mechanism that separates a top sheet from sheets stacked on a hopper
US6716254B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2001 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Mar 13, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2405/141
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet feeder including a hopper that holds a sheet in a stack, a sheet feed roller that touches the sheet on the hopper and feeds the sheet in a sheet feed direction, a face provided on a front end of the hopper with respect to the sheet feed direction so that a leading edge of the sheet being fed bumps into the face, and a plurality of protrusions that are disposed on the face and that bumps into the leading edge of the sheet when the sheet is fed, wherein protrusions are placed on a plurality of lines parallel to the sheet feed direction, only one of the protrusions is placed on each on of the lines, and each one of the protrusions is separated from each other in a direction perpendicular to the sheet feed direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.