Original document reading device capable of automatically detecting the size of an original document
US5500725A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1994 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Sep 27, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00329
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A document reading device comprises a plurality of distances sensors for measuring the distance as for each certain position of an original document table, an original document size detection CPU 1 for comparing information about the distance measured by the plurality of distance sensors with preset threshold value to detect if an original document is disposed on the certain position, then deciding the size of the original document size disposed on the original document table according to the detected result and transmitting original document size data, and a main unit control CPU 2 for taking in the original document size data from the original document size detection CPU 1 to control the reading of the original document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.