Browse Prior Art Database

Vibration Separation Method for Multi-Disk Substrate

IP.com Disclosure Number: IPCOM000122840D
Original Publication Date: 1998-Jan-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 21K

Publishing Venue

IBM

Related People

Chong, D: AUTHOR [+4]

Abstract

Disclosed is a process for separating a group of individual minidisks which have been engraved from both sides on a parent substrate. The minidisks are normally retained in the parent substrate only by a thin web of uncut material which remains in the middle of the substrate.

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Vibration Separation Method for Multi-Disk Substrate

      Disclosed is a process for separating a group of individual
minidisks which have been engraved from both sides on a parent
substrate.  The minidisks are normally retained in the parent
substrate only by a thin web of uncut material which remains in the
middle of the  substrate.

      The novel method for separation is to vibrate the multi-disk
substrate over a band of frequencies selected to cause the substrate
to resonate.  The repeated flexing between the parent carrier (1) and
the individual minidisks (2) induces stress levels in the connecting
web (3) that exceed the yield strength of the material causing it to
fail resulting in the separation of the minidisks from the parent
carrier.