JPH0342236A - Stamper for duplicating disk substrate - Google Patents

Stamper for duplicating disk substrate

Info

Publication number
JPH0342236A
JPH0342236A JP17735489A JP17735489A JPH0342236A JP H0342236 A JPH0342236 A JP H0342236A JP 17735489 A JP17735489 A JP 17735489A JP 17735489 A JP17735489 A JP 17735489A JP H0342236 A JPH0342236 A JP H0342236A
Authority
JP
Japan
Prior art keywords
stamper
disk substrate
duplicating
center
peripheral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17735489A
Other languages
Japanese (ja)
Inventor
Fumio Ito
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP17735489A priority Critical patent/JPH0342236A/en
Publication of JPH0342236A publication Critical patent/JPH0342236A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a stamper capable of duplicating a disk substrate of high quality by providing a piercing hole having a specific diameter for sending a gas for releasing in the vicinity of the center of the stamper.
CONSTITUTION: A piercing hole 7 for sending a gas for releasing at the time of release in a disk substrate duplicating process is formed to the center of a stamper 1. The proper size of the piecing hole 7 is 0.01 - 1mm, pref., 0.05 - 0.1mm. By this method, when a resin substrate + cured UV resin is released from the stamper in the disk substrate duplicating process, the release gas is sent in through said piercing hole and release is performed from the center to the outer peripheral part of the stamper and, therefore, the generation of the broken piece of a 2P resin at the outer peripheral and thereof is suppressed and, even if the broken piece is generated, since an air stream going to the outer peripheral part from the center is formed by air pressure, said broken piece becomes hard to bond to the disk substrate and the disk substrate of high quality can be duplicated.
COPYRIGHT: (C)1991,JPO&Japio
JP17735489A 1989-07-10 1989-07-10 Stamper for duplicating disk substrate Pending JPH0342236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17735489A JPH0342236A (en) 1989-07-10 1989-07-10 Stamper for duplicating disk substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17735489A JPH0342236A (en) 1989-07-10 1989-07-10 Stamper for duplicating disk substrate

Publications (1)

Publication Number Publication Date
JPH0342236A true JPH0342236A (en) 1991-02-22

Family

ID=16029502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17735489A Pending JPH0342236A (en) 1989-07-10 1989-07-10 Stamper for duplicating disk substrate

Country Status (1)

Country Link
JP (1) JPH0342236A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100078143A1 (en) * 2008-09-29 2010-04-01 Kabushiki Kaisha Toshiba Method for manufacturing a duplicating stamper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100078143A1 (en) * 2008-09-29 2010-04-01 Kabushiki Kaisha Toshiba Method for manufacturing a duplicating stamper

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