Magnetic tape surface treatment method and apparatus

摘要

In a magnetic tape surface treatment method and apparatus for rubbing together a magnetic tape (1) and a lapping tape (9) and thereby removing projections and adhered matter from the magnetic surface of the magnetic tape, pressurized air is blown onto the tapes from an outer side and an air film between the contacting surfaces of the two tapes is cut off and the contact quality is thereby raised and the surface treatment efficiency is increased. This improves both the productivity and quality, as regards dropout, of a magnetic tape. Also, dispersion in the surface treatment effect is eliminated by simultaneously controlling the tensions in the magnetic tape (1) before and after the two tapes (1, 9) make contact. <IMAGE>