RECORDING AND REPRODUCING METHOD AND RECORDING ELEMENT

摘要

PURPOSE:To execute high-density recording and reproducing by detecting distribution patterns in accordance with the difference in the quantity of the electrons released from a work function changing part and a work function reference part thereby reproducing information while executing recording of the information by the distribution pattern of the work function changing part. CONSTITUTION:A medium 1 is set in a reactive gas atmosphere B and laser light as an energy device 2 is converged to locally heat or activate the surface of the recording medium 1. The reaction of the components b... forming the atmosphere B and the components A... forming the recording medium 1 is induced locally and a compsn. change by sticking of the components b... is generated by this reaction, by which the recording of the information is executed. The laser light as the energy device 4 for releasing the electrons 3 is converged onto the medium 1 and the difference in the quantity of the released electrons 3 between the work function reference part 14 and the work function changing part 15 is detected as a change in the intensity of the current, by which the distribution patterns of the changing part 15 is detected and the reproduction of the information is executed.