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1. EP1012837 - ARCHIVAL IMAGING AND METHOD THEREFOR

Office European Patent Office
Application Number 98923583
Application Date 21.05.1998
Publication Number 1012837
Publication Date 28.06.2000
Publication Kind A1
IPC
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
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
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
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
41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
M
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5
Duplicating or marking methods; Sheet materials for use therein
26
Thermography
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
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
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
F
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
7
Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
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
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
F
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
7
Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
26
Processing photosensitive materials; Apparatus therefor
36
Imagewise removal not covered by groups G03F7/30-G03F7/3492
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 
241
Record carriers characterised by the selection of the material
242
of recording layers
243
comprising inorganic materials only, e.g. ablative layers
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
B 32B
G 11B
B42D 15/10
B 32B
B41M 5/26
B 42D
CPC
B41M 5/262
C25D 11/04
G11B 7/26
Y10S 148/903
Y10S 430/146
Y10T 428/12701
Applicants FROMSON H A
Inventors FROMSON HOWARD A
ROZELL WILLIAM J
Designated States
Priority Data 1983098 06.02.1998 US
3867298 11.03.1998 US
4744697 22.05.1997 US
09079734 15.05.1998 US
9810344 21.05.1998 US
Title
(DE) ARCHIVALISCHE BILDERZEUGUNG UND VERFAHREN DAFÜR
(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.

(FR)
Cette invention se rapporte à un support d'archivage, du type disque compact, qui est constitué d'un métal tel que l'aluminium, dont la surface est rendue rugueuse par procédé mécanique et sur lequel il est possible d'enregistrer des images par exposition sélective à un rayonnement infrarouge. Un support en aluminium rendu mécaniquement rugueux peut également être soumis à une oxydation anodique dans des conditions telles que la capacité du substrat à être imprimé au laser n'est pas modifiée. Il est possible de recouvrir ce support d'archivage de revêtements polymères transparents aux U.V. et opaques au rayonnement visible, avant ou après l'enregistrement des images, à des fins de sécurité et/ou protection. Ledit revêtement peut être conçu pour subir une ablation par laser, ce qui permet de disposer d'un support inviolable.