| 摘要 |
PURPOSE:To obtain a disk cartridge in which the generation of wear powder generated by the contact of the outer periphery of the disk with a disk holder or a lever is largely reduced and which can sufficiently endure against a severe impact at the time of transporting. CONSTITUTION:A 2P layer having a track groove on a glass board, a recording film layer, a silicon nitride layer for holding the film layer to protect them, and further an acrylic resin layer for protecting the film layer and the silicon layer, are sequentially formed on the board. The two boards are adhered via an adhesive with the surfaces having the acrylic resins disposed inside. Thus, a double sided disk is provided. The outer periphery of the board is covered with the resin member, thereby eliminating the direct contact of the board with the member. |
