Abstract: In an alignment disk for use in adjustment or inspection of a magnetic read/write head in a floppy disk drive unit, which further includes an erase head, the alignment disk is provided with first regions in which signals are prerecorded and second regions in which no signals are prerecorded, the first and the second regions being alternately disposed along a locus followed by the read/write head when the disk is rotated. The length of each of the first region is smaller than the distance between read/write head and the erase head and the length of each of the second regions are larger than the distance between the read/write head and the erase head.

Abstract: The invention relates to a manufacturing apparatus which comprises moving means which continuously moves the works that are transferred along a frame chute, and detector means which detects at least a portion of the work that is moved. The moving means is controlled by kind-of-work data and by a work position signal from the detector means, and the work is set to a predetermined position. Hence, even a work of a different kind can be set to an optimum bonding position without the need of exchanging the unit, making it possible to perform the operation fully automatically and to meet general purposes.Further, provision is made of means which moves the frame chute in a direction at right angles with the direction in which the work is moved, so that even that work that has different widths and shapes in the widthwise direction can be placed in position and subjected to the bonding fully automatically.