Patent ID: 6960269

Claim:
A laminated optical disc manufacturing apparatus comprising: an adhesive applier that applies an adhesive to a first substrate; a laminator configured to superimpose a second substrate onto the first substrate with an adhesive layer having a specific thickness between the first and second substrates; a centerer insertable within a common center hole of the superimposed substrates, the centerer comprising at least two contact pins configured to simultaneously contact an inside circumferential edge of the common center hole and an air source that supplies air pressure to the centerer to extend the at least two contact pins, wherein the at least two contact pins are configured to retractably extend in radial directions to press against the inside circumferential edge of the common center hole and align the superimposed substrates; and a cylinder coupled to each contact pin and configured to retractably extend in the radial direction in accordance with operation of the air source.