Abstract: An arrangement for preventing a condensation on a head for writing information into a storage medium and for reading the information from the storage medium. The arrangement includes a temperature detector for detecting the temperature of the head and a condensation detector for detecting condensation on the head, the temperature detector and the condensation detector being provided in the vicinity of the head, and a heater for heating the head. A controller causes the heater to be energized on the basis of the outputs from the temperature detector and the condensation detector if the head is below a predetermined temperature or if condensation exists on the head at temperatures above the said predetermined temperature.

Abstract: An improved gain controller for use in an audio equipment for controlling a gain of an audio signal without causing any clipping distortion and keeping a good S/N ratio.

Abstract: An improved method of manufacturing a thin film magnetic head, which includes the steps of forming an electrically conductive material coil layer on a substrate of a magnetic material, applying onto the electrically conductive material coil layer, an insulation layer of SiO.sub.2, Si.sub.3 N.sub.4, Al.sub.2 O.sub.3 and the like by sputtering, plasma chemical vapor deposition process, etc., and further forming a coating layer of SiO.sub.2 on the insulation layer by spin-coating process for flattening the upper surface of the insulation layer.

Abstract: A rotary head type recording and reproducing device in which a magnetic tape cassette inserted through a slot of the device is positioned therein in any of an ejection position, an unloaded position, and a loaded position where a recording or reproducing operation of the device is performed. An unloading device is provided which functions to automatically move the cassette from the loaded position to the unloaded position when the operation of the device is terminated with the cassette being held in the loaded position, so that the magnetic tape in the cassette can be protected against dust.

Abstract: There is disclosed a process for modifying in an oxygen plasma an inert reaction product produced on a Fe-Al-Si alloy back core during a production of a thin film magnetic head utilizing a reactive ion etching (RIE) process. As a result of modifying the reaction product it is made readily soluble in and thus removable by water.

Abstract: There provides a process for preparing a coil type thin film magnetic head having high density record by planarization differences in level caused by an electroconductive coil holded between upper and lower magnetic cores.