Copier having a security function
US5642199A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Jan 20, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3274
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital copier or a complex copier having a facsimile function is provided with a security function for keeping a record of persons who copied or transmitted images, the dates of copying or transmission and the kinds of the images in a manner which is not known to a third person. When a scanner included in the copier is used, a document image is electrically or magnetically recorded in a security unit removably mounted on the copier. The document image is thinned or otherwise reduced in scale before written to the security unit. A keyword, password or similar information identifying a person is input on the copier. The document image is recorded in the security unit together with the person's identification and the date and time when the scanner is used. A plurality of such document images stored in the security unit are printed on a single paper at the same time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.