Magnetic recording device
US4442441A · kind A · utility
7Cited by
10References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1981 |
| Grant date | Apr 10, 1984 |
| Priority date | — |
| Expiry date | Feb 19, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D15/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for recording predetermined magnetization patterns on a magnetic recording medium such as for use in a copying machine. The magnetic medium is first magnetized with a uniform magnetization pattern then passed to a thermal printing head upon which a number of heat generating elements are arranged one-dimensionally on a supporting substrate. The heat generating elements are selectively activated to heat the recording magnetic medium to a temperature greater than the Curie temperature thereof so as to change the direction of the magnetization of the magnetic medium in cooperation with a biasing magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.