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Stamper sticking method and device, and multi-layer recording medium

A laminating device and stamper technology, which is applied in the direction of optical recording/reproduction, optical record carrier, sound record carrier, etc., can solve the problems of stamper tilt, warpage, and the thickness direction of the upper recording layer is not constant, etc. Achieve the effect of preventing relative position change and improving holding force

Inactive Publication Date: 2007-05-09
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the stamper may be tilted or warped due to the weight of the stamper or the viscous resistance of an ultraviolet curable resin (so-called resin) previously applied on the inner edge side of a substrate.
[0012] Therefore, when the stamper is tilted or warped, the thickness of the ultraviolet curable resin (so-called resin layer) to be cured between a disk and the stamper is different, and thus the position of the upper recording layer is different in the thickness direction. constant problem

Method used

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  • Stamper sticking method and device, and multi-layer recording medium
  • Stamper sticking method and device, and multi-layer recording medium
  • Stamper sticking method and device, and multi-layer recording medium

Examples

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Embodiment Construction

[0049] Now, a preferred embodiment of a stamper bonding method and apparatus and a multilayer recording medium will be described in detail with reference to the accompanying drawings.

[0050] Fig. 1 is a schematic plan view of a groove forming device to which the die bonding device of this embodiment is applied as a die bonding part. In this embodiment, a device having a stamper removal portion is used as a groove forming device. However, the device is not limited to the formation of a groove structure. An information pit may be formed in the circumferential direction of the disk in addition to the groove structure, or a combination of the groove structure and the information pit may be formed by combining the groove structure and the information pit.

[0051] The stamper bonding device of the present embodiment is applied as a stamper bonding section to which a groove forming device 230 forms a groove forming device 230 at the upper recording side of a rewritable double-lay...

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Abstract

A stamper is overlapped on a disk and then, the stamper (280) is lowered to the disk side in accordance with the pressure of an attaching head (356). Then, the stamper (280) is centered in accordance with fitting with a centering member and attracted by the attaching head (356). Thus, by setting a clearance of the stamper (280) to the disk (278) in accordance with lowering of the attaching head (356), it is possible to center the disk (278) and the stamper (280) and attaching can be performed in which a tilt or warpage does not occur between the disk (278) and the stamper (280).

Description

technical field [0001] The present invention relates to a method and device for attaching a stamper and a multi-layer recording medium, in particular to a stamper capable of centering a disk with a stamper and attaching the stamper to the disk. Die-bonding method and device, and a multi-layer recording medium manufactured by the device. Background technique [0002] Currently, various discs with a multilayer structure have been proposed as next-generation recording media. [0003] Fig. 14 is a schematic cross-sectional view showing the structure of a dedicated reproduction double-layer disc. As shown in FIG. 14, a dedicated reproduction double-layer disc 200 is constructed by including a substrate 202 of 1.1 mm thick and forming a light-transmitting layer 204 of 0.1 mm thick on either surface of the substrate 202. [0004] FIG. 15 is an enlarged view of a boundary portion between a substrate and a light-transmitting layer in FIG. 14 . As shown in FIG. 15, spiral informati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/26G11B7/24B29C31/00B29C33/30B29C43/02B29C65/48B29C65/78B29L17/00G11B7/24038
CPCG11B7/263B29C33/303B29C2043/025G11B7/265B29C31/006B29C43/32B29C43/021B29C2043/3689G11B7/24038B29C65/48B29C65/78G11B7/26
Inventor 金子幸生村上义昭山口晴彦巽纯幸宇佐美守小卷壮
Owner TDK CORPARATION