Patent ID: 7502200

Claim:
An information recording and reproducing unit comprising: a head unit configured to record information into a disc-like recording medium and reproducing information from the recording medium; a carriage member which positions the head unit at an arbitrary position in the radius direction of the recording medium; a carriage drive unit configured to change the position of the carriage member; a carriage drive circuit configured to supply a control signal for changing the position of the carriage member to the carriage drive unit; a connecting medium to connect the carriage drive unit with the carriage drive circuit such that the control signal can be supplied from the carriage drive circuit to the carriage drive unit; and a support base member to support the carriage drive circuit and the connecting medium so that the connecting medium is displaced on either (i) a same plane as a plane in which the carriage member rotates or (ii) a plane parallel to the plane in which the carriage member rotates, the support base member being formed integrally with the carrier member via a plurality of cutting areas which are to be cut out from the carrier member, folded and overlapped at a predetermined position in a state in which the support base member is cut out by punching, while when the support base member is folded and overlapped, the plurality of the cutting areas are provided at positions in which they avoid contact with each other.