Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

A Disk Configuration for Optical Storage

IP.com Disclosure Number: IPCOM000062754D
Original Publication Date: 1986-Nov-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Best, ME: AUTHOR [+3]

Abstract

We have made an optical disk product which takes advantage of both polymeric and glass material properties. The basic configuration is comprised of (a) an injection molded polymethylmethacrylate (PMMA) or polycarbonate (PC) substrate (N1/8" th with smooth surfaces, (b) an acrylate layer (40 microns) on the substrate, and (c) a glass cover layer (N0.5mm) on the acrylate layer. The substrate, of course, can be coated and covered on either side. The injection molded substrate is obtained by an oscillatory injection molding process. The acrylate (2P layer) is placed on the substrate by first coating the stamper (Ni) with the acrylate and then placing the substrate over the stamper, curing (UV N366nm for 10 sec) and finally peeling apart the stamper from the acrylate layer.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

A Disk Configuration for Optical Storage

We have made an optical disk product which takes advantage of both polymeric and glass material properties. The basic configuration is comprised of
(a) an injection molded polymethylmethacrylate (PMMA) or polycarbonate (PC) substrate (N1/8" th with smooth surfaces, (b) an acrylate layer (40 microns) on the substrate, and (c) a glass cover layer (N0.5mm) on the acrylate layer. The substrate, of course, can be coated and covered on either side. The injection molded substrate is obtained by an oscillatory injection molding process. The acrylate (2P layer) is placed on the substrate by first coating the stamper (Ni) with the acrylate and then placing the substrate over the stamper, curing (UV N366nm for 10 sec) and finally peeling apart the stamper from the acrylate layer. Postbaking for x-linking the 2P layer and getting rid of the moisture was used. A UV-curable adhesive layer was then applied to the periphery of the glass plastic assembly and cured for 90 sec. For controlling the flow path of the adhesive, a groove along the periphery of the disk was made.

Disclosed anonymously.

1