GB0406028D0 - Optically coded security markings - Google Patents

Optically coded security markings

Info

Publication number
GB0406028D0
GB0406028D0 GB0406028A GB0406028A GB0406028D0 GB 0406028 D0 GB0406028 D0 GB 0406028D0 GB 0406028 A GB0406028 A GB 0406028A GB 0406028 A GB0406028 A GB 0406028A GB 0406028 D0 GB0406028 D0 GB 0406028D0
Authority
GB
United Kingdom
Prior art keywords
security markings
optically coded
coded security
optically
markings
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.)
Withdrawn
Application number
GB0406028A
Other versions
GB2401823A (en
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.)
Microsharp Corp Ltd
Original Assignee
Microsharp Corp 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 Microsharp Corp Ltd filed Critical Microsharp Corp Ltd
Publication of GB0406028D0 publication Critical patent/GB0406028D0/en
Publication of GB2401823A publication Critical patent/GB2401823A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/08—Photoprinting; Processes and means for preventing photoprinting
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
    • G03F7/001—Phase modulating patterns, e.g. refractive index patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/12—Stencil printing; Silk-screen printing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
GB0406028A 2003-03-17 2004-03-17 Optically coded security markings Withdrawn GB2401823A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0306058A GB0306058D0 (en) 2003-03-17 2003-03-17 Optically coded security markings

Publications (2)

Publication Number Publication Date
GB0406028D0 true GB0406028D0 (en) 2004-04-21
GB2401823A GB2401823A (en) 2004-11-24

Family

ID=9954915

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0306058A Ceased GB0306058D0 (en) 2003-03-17 2003-03-17 Optically coded security markings
GB0406028A Withdrawn GB2401823A (en) 2003-03-17 2004-03-17 Optically coded security markings

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0306058A Ceased GB0306058D0 (en) 2003-03-17 2003-03-17 Optically coded security markings

Country Status (1)

Country Link
GB (2) GB0306058D0 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8812890D0 (en) * 1988-05-31 1988-07-06 De La Rue Co Plc Security device & methods & apparatus for verification
DE69420290T2 (en) * 1993-06-15 1999-12-09 Nashua Corp., Nashua Process for the production of a mask with randomly distributed openings for the production of a diffusing screen
GB2287553A (en) * 1994-03-10 1995-09-20 Sharp Kk A method of manufacturing a diffuser
AU2002223793A1 (en) * 2000-11-10 2002-05-21 Durand Technology Limited Optical recording materials
GB0118382D0 (en) * 2001-07-27 2001-09-19 Durand Technology Ltd Security and authentication marking of products
GB0130726D0 (en) * 2001-12-21 2002-02-06 Durand Technology Ltd Improvements in or relating to security or authentication markings or the like

Also Published As

Publication number Publication date
GB2401823A (en) 2004-11-24
GB0306058D0 (en) 2003-04-23

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)