Attachment apparatus for disc protective sheet and attachment method therefore

1. Technical Field of the Invention An attachment apparatus for disc protective sheet which is adapted for attaching disc protective sheet for protecting disc rotatably accommodated within a cartridge body formed by connecting or joining a pair of upper and lower halves with respect to the surface opposite to the disc of the half. This apparatus comprises a supporting mechanism for supporting halves constituting the cartridge body to which disc protective sheets are attached, a supply mechanism for supplying disc protective sheet to the half, the disc protective sheet being such that a cut portion larger than an opening portion provided at the half and facing a portion of the disc toward the external is provided and a thermal fusible layer is provided on the attachment surface of the surface opposite to the disc of the half in the state where the thermal fusible layer is opposed to the surface opposite to the disc of the half and the cut portion is caused to correspond to the opening portion, and a fusing mechanism having outer shape slightly larger than that of the disc protective sheet and disposed in a manner opposite to the supporting mechanism, the fusing mechanism serving to fuse the thermal fusible layer of the disc protective sheet delivered to the half to fixedly fuse the disc protective sheet onto the half. When the supporting mechanism is moved toward the fusing mechanism side so that the fusing mechanism and the supporting mechanism are relatively moved, the disc protective sheet is fixedly fused onto the surface opposite to the disc of the half by the fusing mechanism.