There is disclosed an information reproducing apparatus and an information recording apparatus in which information transfer is possible by an information amount unit different from a sector unit, so that a burden on a host apparatus is lightened, waste of transfer time is avoided, and information protection level is raised. Then, the movable switch contact is spring-urged to move the switch contact to reopen the shutter-flash synchronization switch and push the single-piece driver in a reverse direction to move the blades towards one another. The P2MP FEC element may, for example, associate an address of the root node of the P2MP LSP with an opaque identifier. The heater of the temperature control module is adapted to thermally communicate with a removable substrate, on which said chemical andor biological sample is placed, via the conductor of caloric.