| 摘要 |
PURPOSE:To prevent the erosion of a recording material by bleeding out of an adhesive without using the adhesive for fixing the outer peripheral part of a transparent substrate by adopting the constitution in which a film-shaped sheet is inserted between a frame material fitted to the outer peripheral end face of the substrate and the transparent substrate end face thereof. CONSTITUTION:The film-shaped sheet 3 is put on the transparent substrate 1 provided with spacers 4, 4' and a recording layer 2 and the fitting frame material 5 is fitted with the sheet 3 in-between to the outer peripheral end face of the substrate 1, by which the sheet 3 is fixed to the substrate 1. The formation of a hollow structure is, therefore, possible without using a back material and without using the adhesive for the spacer part at the outer peripheral part. Since the adhesive is not used for fixing the outer peripheral part of the outer peripheral in the integrated structure by such fitting, the erosion of the recording material by the bleeding out of the adhesive is obviated and since the spaces for adhesion are not needed, the width of the outer peripheral spacers is sufficient at about 1 to 2mm and the wider recording region can be taken. |
