Changes in the Global Parameters of Polytropic Stars Induced by the Appearance of the Soft Core

A cleaning apparatus for cleaning the heads of tape player/recorder units in which, when the cleaning apparatus is operably loaded into the unit, movement of the pinch roller and capstan of the unit turns a cleaning element positioned against the head. Transmission of the rotary movement of the pinch roller and capstan is achieved by a rotatably mounted drive belt connected to a cleaning element, such as a felt pad, so that as the pinch roller and capstan rotate, the belt is driven, thus causing the cleaning element to be rotated against the head about an axis substantially perpendicular to the plane of the face of the head of the unit. A tape drive cleaning assembly is included which cleans the pinch roller and capstan of the unit when the cleaning apparatus is turned upside down.