Magnetic hysteresis driven recording element and method
US4221163A · kind A · utility
6Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 1, 1978 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Sep 1, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J9/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A magnetic field is applied to a recording element by energization of an electromagnet or by a permanent magnet to a saturation point of the element material to cause the recording element to move in relation to the electromagnet or to the permanent magnet when the magnetic field is reversed. The polarity opposes or reverses the field to enable a controlled repulsion force and causes the recording element to move in an opposite direction. Magnetic hysteresis is thus utilized in the repulsion and attraction of such an element in both directions of movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.