Wear compensating optical/magnetic transducer
US4056712A · kind A · utility
10Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1976 |
| Grant date | Nov 1, 1977 |
| Priority date | — |
| Expiry date | Jun 9, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B13/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A wear compensating transducer is provided for reading optical and magnetic data from documents comprising a magnetic read head with a group of optical fibers passing through the reluctance gap and with the fiber ends disposed for wiping engagement with documents as they are read. The fiber ends define an optical reading aperture which remains substantially constant as the fiber ends wear with the contact surface of the magnetic head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.