| 摘要 |
PURPOSE:To generate high adhesive power between a substrate and spacers, more particularly an outside spacer and to prevent the exfoliation of recording layers from the ends thereof by providing the recording layers to part of the region where said layers are joined to the outside spacer. CONSTITUTION:The recording layers 2a, 2b are respectively provided on two sheets of the disk-shaped substrates 1a, 1b. Both the recording layers are formed up to part of the region where the substrates 1a, 1b and the annular outside spacer 4 are joined. The substrates 1a, 1b are, therefore, joined partly via the recording layers 2a, 2b by adhesive agent layers 3a, 3b with the spacer 4 in-between. Another end of the recording layers 2a, 2b is not extended up to the joint region on the inside spacer side and the substrates 1a, 1b are directly joined by adhesive agent layers 3a, 3d with the annular inside spacer 5 in-between. The finish of the region where the substrates and the outside spacer are joined is thereby improved and further the exfoliation of the recording layers is prevented. |
