A voltage adjusting thin plate 16 is arranged below a roller before transfer 7 so as to be abutted on a surface of the roller before transfer 7 at a side opposite to a side where a transfer wire 18 of a transfer device 9 is located. Several individual images of the signal emitted by the tissue or vascular region are recorded and stored at successive points in time. Ac terminations and ac currents in connecting circuitry are particularly troublesome, so the input and output terminations of the transformer are dc. The high-speed input and output circuits are comparatively simple, in one example having only a clear signal for a control line input, and are able to interface to lower speed circuitry inside the core of an integrated circuit. The compressed block of fibers is cooled to solidify melted portions of the fibers at portions where the fibers intersect with each other. A support structure supports the rotary table and the housing.