Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for resolving nonuniformity of thickness of retaining layer in production of blue ray disc

A technology of protective layer thickness and Blu-ray disc, applied in the direction of optical record carrier, optical record carrier manufacturing, etc., can solve problems such as uneven thickness of protective layer, achieve the effect of improving the reuse rate, avoiding the phenomenon of chucking, and avoiding consolidation

Inactive Publication Date: 2009-02-04
HENAN KAIRUI DIGITAL
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of uneven thickness of the protective layer due to the shrinkage of the protective layer glue in the production of Blu-ray discs

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
  • Method and device for resolving nonuniformity of thickness of retaining layer in production of blue ray disc
  • Method and device for resolving nonuniformity of thickness of retaining layer in production of blue ray disc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] like figure 1 As shown, a lamp holder 1 is fixed on the movable arm 2, and an ultraviolet lamp 11 is installed on the lamp holder. On the base 9, there is fixed a glue-rejecting bowl 8. In the center of the glue-rejecting bowl 8, there is a glue-rejecting rotating shaft 10 connected to the motor, and a tray 7 is fixed at the upper end. Column 6, the guide column is convex, and is used to fix the position of the CD when the disc is placed in the tray. On the surrounding platform of the convex guide column, there are 6 holes, which are all connected with a trachea, and the trachea attracts the place. The generated negative pressure sucks the clamping area in the center of the disc through the upper opening, so that the disc and the tray are tightly combined, which can prevent the disc from sliding on it when the tray rotates in the gluing bowl. A fixed arm 4 is also fixed on the base 9 , and the movable arm 2 can move up and down along the fixed arm 4 . After the optica...

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

No PUM Login to View More

Abstract

A method and a device for solving the problem of thickness unevenness of the protective layer in the production of a blue-ray disc are disclosed. After being spin-coated with protective glue, the disc is placed on a tray in a whirl coating bowl and is irradiated by an uviol lamp when a whirl coating rotating shaft drives the tray to rotate. The device is characterized in that a fixed arm and the whirl coating bowl are fixed on a pedestal; the whirl coating rotating shaft is arranged at the center of the whirl coating bowl and the tray is fixed at the upper end of the whirl coating rotating shaft; the moveable arm on which the uviol lamp is fixed can move up and down along the fixed arm. Due to the irradiation of the uviol lamp, the viscidity of the glue on the disc can be increased and the elastic shrinkage of the glue layer can be reduced, thus effectively controlling the evenness of the thickness of the protective layer of the disc.

Description

a technical field [0001] The invention belongs to optical disc production technology and equipment, and particularly relates to a method and device for solving the uneven thickness of protective layers in the production of blue-ray discs. Two background technology [0002] In order to improve the storage capacity of Blu-ray Disc, Blu-ray Disc uses 405nm blue-violet laser, which puts forward higher requirements for the physical structure of the disc. Floor. Due to the mature injection molding process in the DVD industry, it is relatively easy to inject a 1.1mm disc base, but how to make a 100±2um thick protective layer poses a technical problem for the production process. There are two commonly used methods of making protective layers on the market today, one is the method of sticking the film, and the other is the method of spin coating the protective glue. The film sticking method needs to pre-produce a 100um film in advance. In the actual film sticking, this method is pr...

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 Applications(China)
IPC IPC(8): G11B7/26
Inventor 夏芃范海龙刘娟宋国旗缪灯奎马琰高强王书娟张翔
Owner HENAN KAIRUI DIGITAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com