Paper feeding apparatus
US6837490B2 · kind B2 · utility
6Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2002 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Apr 16, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/21
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A paper feeding apparatus includes a first support member for supporting a central area of a lower surface of printing paper placed on a paper tray, second support members for supporting corner areas of the lower surface of the printing paper, sensors for detecting heights of an upper surface of the printing paper placed on the paper tray, motors rotatable based on signals from the sensors, and lift screws vertically movable by the motors. The second support members are connected to the lift screws to be vertically movable therewith, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.