A tire bead holder assembly for centering and gripping a circular tire bead before placement on a bead setter has circumferentially spaced radially moveable fingers actuated by a chain drive for simultaneous controlled movement of the fingers and application of centering pressure without distortion of the bead. The SIP semiconductor device includes chips including first and second chips. The ink jet recording apparatus includes a control unit which, when effecting an arbitrary recording, effects control such that, when a sheet trailing edge leaves the upstream side conveyance unit, a rotating position of a drive side roller of the downstream side conveyance unit is the same as the rotating position of the drive side roller when the test pattern is recorded. The apparatus can be operated in a first mode and a second mode by actuating the control circuit. The readwrite request includes virtual block numbers which are translated into physical block numbers before performing the readwrite operation on the physical storage. Any time a writable medium is accessed, the drive must automatically write the drive identifier to the Access Audit Table and, if appropriate, to the Unique Drive Table.