Solidified holding tray capable of controlling bonding excursion of center hole of double-layer optical disk

Abstract

The invention provides a solidified tray, which comprises a carrying tray which is provided with a central opening and an offset-controlling device, wherein the offset-controlling device includes a sleeve barrel, a positioning head, a clamping cap, a shaft core seat, a core column and a magnet fixing seat, wherein one end of the sleeve barrel is open, the other opposite base end is enclosed and is provided with a central hole, the lower end of the positioning head is disposed inside the opening end of the sleeve barrel, the positioning head can move between the closing state and the opening state, thereby respectively limiting the outer diameter of phi 14.8 millimeters and phi 15 millimeters. The clamping cap is utilized to fix the sleeve barrel and the positioning head in the central opening of the carrying tray, and the shaft core seat is arranged inside the sleeve barrel and is adjacently connected with the lower end of the positioning head. The core column is mounted by passing the central hole disposed at the base end of the sleeve barrel and the shaft core, the diameter enlarging end of the core column is positioned inside the positioning head, the other end is disposed in the external portion of the base end of the sleeve barrel and is provided with core column magnets. The magnet fixing seat is disposed on the base board and is employed to fix a base board magnet. The solidified tray is capable of eliminating offset errors introduced in the gluing process of the central opening of a disc with a double-layer structure.

Description

technical field [0001] The invention relates to a device for manufacturing digital optical discs, in particular to a curing tray used in a curing device, the curing tray can control the bonding offset of the central hole of a double-layer optical disc. Background technique [0002] According to the optical disc red book, eccentricity (ECC eccentricity) means the distance between two circle centers, that is, the distance between the geometric center of the information track and the geometric center of the central hole of the disc. [0003] With the improvement of optical disc reading and writing speed, recording density, and shortening of seek time, the requirements for eccentricity become more and more stringent. In order to obtain higher quality discs and to better optimize the manufacturing process, it is necessary to control the eccentricity introduced by each disc production stage. [0004] A finished disc of a DVD disc having a double-layer structure is formed by bondi...

AI Technical Summary

Problems solved by technology

In this way, the central holes of the two single pieces will produce offset errors during the bonding process, resulting in disc eccentricity (ECC) and reducing the quality of the disc.

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