Method and apparatus for recording graphic information magnetically
US4107742A · kind A · utility
Inventor
Key dates
| Filing date | May 30, 1975 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | May 30, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/207
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging system is provided whereby graphic information from a source is magnetically recorded on a receiving surface. The imaging system comprises an arrangement for shaping a magnetic field to substantially linear configuration. A photo-responsive element is provided for varying the intensity of the magnetic field along the line in accordance with information contained in a corresponding line of the source of the original graphic information. An intermediary receiving surface is provided to receive the magnetic information and construct a magnetic image thereon. A toner supply is also provided in magnetically attractable relationship to the intermediary receiving surface for causing transfer of toner material from the supply to the intermediary receiving surface in a quantity corresponding to the variations of the magnetic field intensity on the intermediary receiving surface. Elements are also provided to transfer the toner image to a writing or final receiving surface where it is fixed to provide a graphic record of the original source material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.