Sheet stacker and image forming apparatus incorporating the sheet stacker
US11339022B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2020 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Aug 26, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sheet stacker includes a sheet stacking member, a biasing force applier, an angle changer, and a biasing force change reducer. The sheet stacking member has an upstream portion in a sheet conveyance direction. The upstream portion is movable in a vertical direction. The biasing force applier is configured to bias the sheet stacking member upward. The angle changer is configured to change an angle of a sheet stacking face of the sheet stacking member, relative to a surface of a sheet conveyed through a sheet conveying portion. The biasing force change reducer is configured to restrain a change of a biasing force acting on the sheet stacking member, before and after a change of the angle of the sheet stacking member by the angle changer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.