Abstract: A tape guide device includes a guide member of a cylindrical configuration for guiding a tape, a ultrasonic vibrator secured to the guide member for vibrating the guide member in standing-waves configuration and a supporting member for supporting the guide member. A rotation preventing member for preventing a rotation of the guide member is formed on one of a pair of tape position restricting members in the width direction of the tape, whereby the number of the assembly parts of the tape guide device is reduced and a mechanism thereof is simplified. Therefore, the tape guide device can be miniaturized. Also, the structure and the shape of the ultrasonic vibrator are selected so that, even when the tape guide device is miniaturized, a coefficient of friction between the tape and the guide member becomes an optimum value.

Abstract: In a tape loading device in which a tape is drawn from a mounted tape cassette and loaded on a tape path which lies in front of the mounted tape cassette, a big capstan which is arranged in front of the mounted tape cassette is inserted into a space formed between the mounted tape cassette and a portion of the tape which has been loaded on the tape path, from a position where the big capstan does not interfere with the tape which is moved to the tape path, so that it is possible to make the diameter and length of the capstan large.

Abstract: Process for producing hexamethyleneimine by catalytic hydrogenation of .epsilon.-caprolactam in a liquid phase which comprises contacting .epsilon.-caprolactam with hydrogen over a catalyst selected from the group consisting of:A. essentially cobalt-molybdenum catalysts, andB. essentially cobalt-rhenium-molybdenum catalysts.