Apparatus for cleaning back surface of magnetic tape
US3978546A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1975 |
| Grant date | Sep 7, 1976 |
| Priority date | — |
| Expiry date | Apr 3, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B5/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A rotatable cleaning element having a resilient, porous material disposed on the outer surface thereof is mounted in a foil bearing so that the surface of the porous material protrudes above the bearing surface. The interior of the bearing is maintained at a negative pressure, and a jet of pressurized air disposed within the rotatable element. When magnetic tape is transported over the bearing surface, the tape makes contact with and slightly compresses the porous material. As the cleaning element rotates successive areas of the porous material is brought into contact with the tape. Compression of the material causes the pores thereof to expand slightly, and engage foreign material on the tape surface. The pores contract as the material breaks contact with the tape to encapture the foreign material. The foreign matter thus accumulated is subsequently blown free of the porous material by a jet of air directed from within the rotatable body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.