Magnetic recording and reproducing apparatus with heated tape guide

Claim 1

In a magnetic recording and reproducing apparatus of the helical scan type having magnetic type guide means including a lower drum having a guide surface for guiding a magnetic tape upwardly along its periphery, a shaft rotatably mounted in a concentric relation on the magnetic tape guide surface of said lower drum, an upper drum having a guide surface for guiding the magnetic tape downwardly along its periphery and located in a concentric relation to said lower drum to define a predetermined gap therebetween, and at least one rotary head mounted on said shaft with its leading edge projecting into the gap defined between said upper and lower drums, wheRein the magnetic tape travels while it is wrapped around said guide means over at least 180 degrees thereof whereby a slant magnetization pattern can be recorded on the magnetic tape when said rotary head is rotated; the improvement comprising heating means for heating at least one side of the magnetic tape guide surfaces of said upper and lower drums in order to vaporize water content attracted to contact surfaces between said upper and lower drums and the magnetic tape to reduce friction resistance between said drum and the magnetic tape.