Patent ID: 7913737

Claim:
A compact bonding apparatus for flat-plate forms of recording media formed by a pair of substrates bonded together, comprising: a turntable for revolving about an axis having a plurality of substrate carrying parts on and adjacent a perimeter of the turntable, a rotational speed of the turntable is set to enable correction of any warping of the recording media; a plurality of operational units are positioned sequentially along the turntable perimeter to interact with the substrate carrying parts on the turntable in the following sequence, a first substrate placement unit for placing a first substrate on one of the plurality of substrate carrying parts, a second substrate placement unit for placing a second substrate on top of the first substrate with adhesive therebetween on the one of the plurality of substrate carrying parts, a bonding unit for receiving the first and second substrates with adhesive to apply a vacuum to adhere the first and second substrates together as bonded substrates on the one of the plurality of substrate carrying parts, a pre-curing standing unit portion of the turntable that occupies one third of the plurality of the substrate carrying parts on the turntable, each holding a free standing bonded substrates that are only being subject to ambient atmosphere and temperature to enable a predetermined rest time period of rotation of the turntable to relieve stress between the bonded substrates and prevent warping of the bonded substrates, before a subsequent operational process is performed on the bonded materials, and a curing unit to irradiate the bonded substrates with ultraviolet light to cure the adhesive between the stress relieved bonded substrates; and means for setting a rotational speed of the turntable to enable correction of warping in respectively a radial and a tangential direction of the free standing bonded substrates as the turntable rotates through the pre-curing standing unit portion of the turntable.