Copying machine
US4449152A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1981 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Dec 10, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/193
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A copying machine includes an optical sensor of the line scanning type for converting an image into electrical signals, and a thermal recording head controlled in accordance with the image signals. The platen moves with respect to the read unit and the read unit will read in both forward and reverse directions of the platen, and the magnification value can be varied. The total width of energized heating elements and the movement length and speed of the platen may be controlled in accordance with the size of the original. The total number of heating elements energized at any one time is limited, and the machine includes input and output terminals for sending image information externally and for receiving and recording image information other than directly from the read unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.