Optical recording substrate; optical recording medium; and manufacturing method thereof
A technology of optical recording medium and manufacturing method, which is applied in the direction of optical recording carrier manufacturing, optical recording carrier, sound recording carrier, etc., and can solve the problems of not being able to obtain injection molding, etc.
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[0029] The present invention will be described in detail below using examples. However, the present invention is not limited to this example.
no. 1 Embodiment
[0031] An optical recording substrate was molded using a NIC200 molding machine manufactured by Nissei Plastic Industry Co., Ltd. This device is figure 1 As shown, it consists of the following 4 stations: ① Place the workpiece (sheet), take out the substrate (press 0), ② preheat press (press 1), ③ heat press (press 2), ④ cold press (press 3). This enables the laminated body of the stamper and the organic polymer sheet to be fixed on the rotary plate R for a predetermined time each time while keeping the contact surface decompressed, and to be rotated and moved. At the press 0, the press mold and the pressed material such as the organic polymer sheet are laminated. After lamination, close the cover, start vacuuming, and then rotate and move to the next process. After the material to be pressed is preheated in press 1, it is heated to a predetermined temperature in press 2, and the surface shape of the stamper is transferred. Then, cooling and fixing are performed at the pre...
no. 2 Embodiment
[0039] In the first embodiment, the vacuuming time at press 0 was set to 1 minute, and the PC film was previously brought into contact with the glass fiber fabric impregnated with polyvinyl fluoride (registered trademark) using the above-mentioned sheet forming machine. One surface was roughened, and the roughened surface was brought into contact with the information surface of the stamper, and the same molding and evaluation as in the first example were performed. In this case, although the evacuation time at the press 0 was shortened compared with the first example, all five samples obtained good evaluation results. It can be seen from this that roughening the PC film can shorten the forming cycle, improve production efficiency, and improve the product qualification rate.
[0040] Furthermore, the thickness distribution of the film was measured at intervals of 1 cm vertically and horizontally. As a result, the average value before forming was 100.2 μm, and the standard devia...
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Abstract
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