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Patent Searching and Data


Title:
SPACER LAYER FORMING DEVICE AND METHOD FOR DISK HAVING TWO-LAYERED STRUCTURE
Document Type and Number:
Japanese Patent JPH0973670
Kind Code:
A
Abstract:

To lessen the formation of the flashes of a UV curing resin protruding from the outer periphery of a rotary stamper by forming the outside diameter of a substrate and the outside diameter of the rotary stamper nearly equal to each other.

This spacer layer forming device has the stamper 107 which is arranged to face the low reflection film on the substrate 101 and a UV curing resin supplying machine 23 having a resin supplying nozzle 22 for supplying the liquid UV curing resin 103a between this stamper and the low reflection film. The device has a means for forming the spacer layer consisting of the UV curing resin 103a between the substrate 101 and the stamper 107 by rotating both of the substrate 101 and the stamper 107 while crushing the UV curing resin 103a by bringing the substrate 101 and the stamper 107 into pressurized contact with each other. At this time, the outside diameters of the rotary stamper 107 and the outside diameter of the substrate 101 are nearly equal to each other, by which the flashes protruding from the outer periphery of the stamper 107 are less produced. In addition, the treatment is made easier and the productivity is improved even when the flashes are stripped by pressing a cutter blade, etc., to the outer peripheral surface.


Inventors:
YOSHIMURA YOSHINORI
Application Number:
JP25452695A
Publication Date:
March 18, 1997
Filing Date:
September 07, 1995
Export Citation:
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Assignee:
SONY DISC TECHNOLOGY INC
International Classes:
B29D17/00; G11B7/26; B29K101/10; (IPC1-7): G11B7/26; B29D17/00
Attorney, Agent or Firm:
Hideki Yamamoto