OPTICAL INFORMATION RECORDING MEDIUM AND PRODUCTION METHOD THEREFOR, PRODUCTION DEVICE

摘要

An optical information recording medium comprising a signal substrate having a signal surface formed on at least one surface thereof and a center hole, a center substrate disposed so as to be flush with the signal surface of the signal substrate and close the center hole, and a transparent layer formed on the signal surface of the signal substrate so as to include at least part of the center substrate, characterized in that the center substrate has a clamping means; and a production method for the optical information recording medium.