CA2272145A1 - Electronic article surveillance markers for direct application to optically recorded media - Google Patents

Electronic article surveillance markers for direct application to optically recorded media Download PDF

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Publication number
CA2272145A1
CA2272145A1 CA002272145A CA2272145A CA2272145A1 CA 2272145 A1 CA2272145 A1 CA 2272145A1 CA 002272145 A CA002272145 A CA 002272145A CA 2272145 A CA2272145 A CA 2272145A CA 2272145 A1 CA2272145 A1 CA 2272145A1
Authority
CA
Canada
Prior art keywords
marker
recorded media
optically recorded
direct application
electronic article
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.)
Granted
Application number
CA002272145A
Other languages
French (fr)
Other versions
CA2272145C (en
Inventor
Ching-Long Tsai
Chester Piotrowski
Rita M. Lunderville
Norman L. Koning
John G. Fitzgerald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining And Manufacturing Company
Ching-Long Tsai
Chester Piotrowski
Rita M. Lunderville
Norman L. Koning
John G. Fitzgerald
3M Company
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
Priority claimed from US08/587,721 external-priority patent/US5699047A/en
Application filed by Minnesota Mining And Manufacturing Company, Ching-Long Tsai, Chester Piotrowski, Rita M. Lunderville, Norman L. Koning, John G. Fitzgerald, 3M Company filed Critical Minnesota Mining And Manufacturing Company
Publication of CA2272145A1 publication Critical patent/CA2272145A1/en
Application granted granted Critical
Publication of CA2272145C publication Critical patent/CA2272145C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Burglar Alarm Systems (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

An Electronic Article Surveillance (EAS) marker (10) is adapted for direct application to optically recorded media such as compact disks. CD-ROM's, laser disks, digital video disks, and the like. The marker includes a support sheet (12) and one or more marker elements (16, 18) which are positioned such that the mass distribution of the marker is symmetrically disposed about the center of the marker. This ensures that when the marker is properly positioned on the optically recorded media, the marker does not adversely affect the mechanical balance of the media.
CA002272145A 1996-01-19 1997-01-14 Electronic article surveillance markers for direct application to optically recorded media Expired - Fee Related CA2272145C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/587,721 1996-01-19
US08/587,721 US5699047A (en) 1996-01-19 1996-01-19 Electronic article surveillance markers for direct application to optically recorded media
CA002241743A CA2241743C (en) 1996-01-19 1997-01-14 Electronic article surveillance markers for direct application to optically recorded media

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002241743A Division CA2241743C (en) 1996-01-19 1997-01-14 Electronic article surveillance markers for direct application to optically recorded media

Publications (2)

Publication Number Publication Date
CA2272145A1 true CA2272145A1 (en) 1997-07-24
CA2272145C CA2272145C (en) 2006-01-10

Family

ID=29712990

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002272145A Expired - Fee Related CA2272145C (en) 1996-01-19 1997-01-14 Electronic article surveillance markers for direct application to optically recorded media

Country Status (1)

Country Link
CA (1) CA2272145C (en)

Also Published As

Publication number Publication date
CA2272145C (en) 2006-01-10

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Effective date: 20170116