Automatic media size detector
US5483889A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1995 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | May 19, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2511/20
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention is an apparatus for conveying the size of a media to a printing system. The apparatus is constructed from a tray that has several receiving positions, one position for each size of media. A plurality of conductive strips are attached to the top of the tray. Additionally, the conductive strips are arranged to be in contact with the printing system when the tray is inserted in the printing system. An insulating label is placed over the conductive strips. The insulating label has a unique pattern of holes for each of the receiving positions in the tray. Finally there is a back-stop attached to the tray in one of the receiving positions. The back-stop attaches over the label and has connections on the bottom of the back-stop arranged to make electrical contact through the unique pattern of holes with the conductive strips. Because the back-stop rests against the media, the printing system can read the position of the back-stop by reading the unique code created by the electrical connection between the back-stop and the conductive strips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.