Unlock instant, AI-driven research and patent intelligence for your innovation.

Disk mfg. device and method for mfg. transparent layer of disc

A technology of transparent layer and disc base, applied in the field of disc manufacturing, can solve the problems of deterioration of reproduced signal characteristics, increase of deviation, etc.

Inactive Publication Date: 2008-11-26
SAMSUNG ELECTRONICS CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reduction of the laser beam wavelength or the increase of the NA of the objective lens is limited
Therefore, if the NA of the objective lens increases and the wavelength of the laser beam decreases, the spot diameter of the laser beam increases; but the deviation increases greatly, deteriorating the characteristics of the reproduced signal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Disk mfg. device and method for mfg. transparent layer of disc
  • Disk mfg. device and method for mfg. transparent layer of disc
  • Disk mfg. device and method for mfg. transparent layer of disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0033] One of the features of the apparatus and method for manufacturing the disk according to the present invention is that both spin coating and resin hardening are carried out on one apparatus, so there is no need to move the disk when manufacturing the transparent layer. In other words, in the disk manufacturing apparatus, spin coating is performed on the disk, and then, the resin for coating is hardened without moving the disk.

[0034] Figure 4 is a front view of an apparatus for manufacturing discs according to a preferred embodiment of the present invention, Figure 5 is a side view of an apparatus for manufacturing a disk according to a preferred embodiment of the present invention. see Figure 4 with Figure 5 It can be seen that the disk manufacturing apparatus includes a spin coating section for coating resin on the disk...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

An apparatus for manufacturing a disc and a method for forming a transparent layer thereof are provided. The apparatus for manufacturing a disc includes a spin coating portion for coating a resin onto a disc substrate on which a spindle table is mounted, and a resin hardening portion for hardening the resin, which is coated onto the disc substrate in the state where the disc substrate is mounted on the spindle table. A central dispensing method can be easily performed, and a more uniform transparent layer can be obtained.

Description

technical field [0001] The present invention relates to a method of manufacturing a disk, and more particularly, to an apparatus and method for forming a transparent layer of a disk. Background technique [0002] A method of increasing the recording density of a disk includes a method of reducing the diameter of a laser beam spot emitted onto the disk for recording. The shorter the wavelength of the laser beam and the larger the numerical aperture (NA) of the objective lens, the smaller the spot diameter of the laser beam. However, there is a limit to the reduction of the wavelength of the laser beam or the increase of the NA of the objective lens. Therefore, if the NA of the objective lens is increased and the wavelength of the laser beam is decreased, the spot diameter of the laser beam is increased; but the deviation is greatly increased, deteriorating the characteristics of the reproduced signal. [0003] figure 1 is a cross-sectional view of a conventional disk. see...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/26B05D1/00B05D3/06
CPCG11B7/266B05D3/067B05D1/005G11B7/26
Inventor 张道熏朴仁植卢明道尹斗燮
Owner SAMSUNG ELECTRONICS CO LTD