Magnetic recording heads
US4415906A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1981 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Jul 17, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/17
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided improvements in magnetic recording head arrangements, such as may employ multiplexing, which provide substantially higher speeds of recording and require fewer components. The recording head is comprised of a compact, four-layer laminate structure mountable on a supporting substrate, in which the entire array of recording elements forms a flexible, uniquely arranged first layer, the return paths of the recording elements comprise a flexible second layer which has the dual utility of substantially reducing the recording element circuit inductance, the third layer is a rigid printed circuit board structure providing a mount for the blocking diodes and the conductive paths of the associated multiplexing scheme, and the fourth layer is a ground plane located between the first and third layers and insulated therefrom for further reducing the inductance associated to the circuitry of the first layer and for substantially minimizing the circuit inductance of the third layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.