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1. (CA2291088) ARCHIVAL IMAGING AND METHOD THEREFOR

Office : Canada
Application Number: 2291088 Application Date: 21.05.1998
Publication Number: 2291088 Publication Date: 26.11.1998
Publication Kind : A1
Prior PCT appl.: Application Number:US1998010344 ; Publication Number: Click to see the data
IPC:
G11B 7/24
B32B 15/00
B32B 15/08
B42D 15/10
C25D 11/04
G11B 7/26
G11C 13/04
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
24
Record carriers characterised by shape, structure or physical properties, or by the selection of the material 
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15
Layered products essentially comprising metal
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15
Layered products essentially comprising metal
04
comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
08
of synthetic resin
B PERFORMING OPERATIONS; TRANSPORTING
42
BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
D
BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
15
Printed matter of special format or style not otherwise provided for
10
Identity, credit, cheque or like information-bearing cards
C CHEMISTRY; METALLURGY
25
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
D
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; JOINING WORKPIECES BY ELECTROLYSIS; APPARATUS THEREFOR
11
Electrolytic coating by surface reaction, i.e. forming conversion layers
02
Anodisation
04
of aluminium or alloys based thereon
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
24
Record carriers characterised by shape, structure or physical properties, or by the selection of the material 
26
Apparatus or processes specially adapted for the manufacture of record carriers
G PHYSICS
11
INFORMATION STORAGE
C
STATIC STORES
13
Digital stores characterised by the use of storage elements not covered by groups G11C11/, G11C23/, or G11C25/173
04
using optical elements
CPC:
B41M 5/262
C25D 11/04
G11B 7/26
Y10S 148/903
Y10S 430/146
Y10T 428/12701
Y10T 428/12722
Y10T 428/12799
Y10T 428/12993
Y10T 428/24372
Y10T 428/24413
Applicants: FROMSON, HOWARD A.
Inventors: FROMSON, HOWARD A.
ROZELL, WILLIAM J.
Priority Data: 09/019830 06.02.1998 US
09/038672 11.03.1998 US
09/079734 15.05.1998 US
60/047446 22.05.1997 US
Title: (EN) ARCHIVAL IMAGING AND METHOD THEREFOR
(FR) ARCHIVAGE D'IMAGES ET PROCEDE CORRESPONDANT
Abstract:
(EN) An archival medium, such as a compact disc, is made of a metal such as aluminum which is mechanically roughened and visibly imageable by selective exposure to infrared laser radiation. A mechanically roughened aluminum medium can also be anodically oxidized under conditions that do not impair the ability of the substrate to be laser imaged. The archival medium can be coated with opaque and transparent polymer coatings before or after imaging for security and/or protection. The coating can be a laser ablatable coating to provide a tamper-proof medium.


Also published as:
MXPA/a/1999/010579EP1012837JP2002514340 AU1998075843WO/1998/053451