Image forming apparatus which adds identification information to recorded images to prevent forgery
US5444518A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1994 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Apr 5, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3271
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image forming apparatus including an image reading unit for reading an original and for outputting image data corresponding to the original, an image processing unit for processing the image data supplied from the image reading unit in accordance with a predetermined method and for outputting printing image data, a printer unit for printing an image corresponding to the printing image data supplied from the image processing unit, and an image adding unit for adding an identification information to the recording sheet on which the image is formed by the printer unit, the identification information identifying the image forming apparatus in order to prevent forgery of securities, confidential documents or backnotes. A detector detects the presence or absence of the image adding unit and disables the copying functions when the image adding unit is absent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.