Paper present sensing for a paper tray through media size sensing board
US8387972B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2012 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Mar 5, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A media sheet tray includes a first media size sensor, a second media size sensor, a first circuit connected to the first media size sensor, a second circuit connected to the second media size sensor, and a switch within the second circuit. The switch can be in an open position disconnecting a continuity of the second circuit, or in a closed position maintaining the continuity of the second circuit. Media being within the media sheet tray closes the switch. Further, a combination of the first circuit connecting to the first media size sensor and the second circuit being discontinuous indicates that paper is absent from the media sheet tray.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.