GB9709318D0 - Improvements in and relating to anti-photocopying measures - Google Patents

Improvements in and relating to anti-photocopying measures

Info

Publication number
GB9709318D0
GB9709318D0 GBGB9709318.1A GB9709318A GB9709318D0 GB 9709318 D0 GB9709318 D0 GB 9709318D0 GB 9709318 A GB9709318 A GB 9709318A GB 9709318 D0 GB9709318 D0 GB 9709318D0
Authority
GB
United Kingdom
Prior art keywords
photocopying
relating
measures
photocopying measures
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Withdrawn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
GBGB9709318.1A
Other versions
GB2312872A (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.)
KALAMAZOO COMPUTER GROUP PLC
Original Assignee
KALAMAZOO COMPUTER GROUP PLC
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 KALAMAZOO COMPUTER GROUP PLC filed Critical KALAMAZOO COMPUTER GROUP PLC
Publication of GB9709318D0 publication Critical patent/GB9709318D0/en
Publication of GB2312872A publication Critical patent/GB2312872A/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Withdrawn legal-status Critical Current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
    • B41M3/146—Security printing using a non human-readable pattern which becomes visible on reproduction, e.g. a void mark
    • 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
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/04—Preventing copies being made of an original
    • G03G21/043—Preventing copies being made of an original by using an original which is not reproducible or only reproducible with a different appearence, e.g. originals with a photochromic layer or a colour background

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Printing Methods (AREA)
  • Credit Cards Or The Like (AREA)
GB9709318A 1996-05-10 1997-05-09 An anti-photocopying device comprising a dot pattern Withdrawn GB2312872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9609826.4A GB9609826D0 (en) 1996-05-10 1996-05-10 Improvements in and relating to anti-photocopying measures

Publications (2)

Publication Number Publication Date
GB9709318D0 true GB9709318D0 (en) 1997-06-25
GB2312872A GB2312872A (en) 1997-11-12

Family

ID=10793516

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9609826.4A Pending GB9609826D0 (en) 1996-05-10 1996-05-10 Improvements in and relating to anti-photocopying measures
GB9709318A Withdrawn GB2312872A (en) 1996-05-10 1997-05-09 An anti-photocopying device comprising a dot pattern

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9609826.4A Pending GB9609826D0 (en) 1996-05-10 1996-05-10 Improvements in and relating to anti-photocopying measures

Country Status (2)

Country Link
EP (1) EP0806706A1 (en)
GB (2) GB9609826D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9718958D0 (en) * 1997-09-08 1997-11-12 House Of Questa The Limited Improvements relating to security printing
US6725346B1 (en) * 2000-04-04 2004-04-20 Motorola, Inc. Method and apparatus for overlaying memory in a data processing system
GB0011751D0 (en) * 2000-05-17 2000-07-05 Ascent Systems Software Limite Security apparatus
JP5071523B2 (en) 2010-06-03 2012-11-14 コニカミノルタビジネステクノロジーズ株式会社 Background pattern image synthesis apparatus, background pattern image synthesis method, and computer program
GB201817461D0 (en) * 2018-10-26 2018-12-12 De La Rue Int Ltd Apparatuses and methods for printing security documents

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265469A (en) * 1977-05-18 1981-05-05 Burroughs Corporation Protected document and method of making same
US4175774A (en) * 1978-03-23 1979-11-27 American Standard Inc. Non-copying printed document and method of printing same
US4351547A (en) * 1979-10-11 1982-09-28 Burroughs Corporation Security document and method for making same using an alternating dot pattern
US4341404A (en) * 1980-02-11 1982-07-27 Burroughs Corporation Security document using a variable dot screen
US4579370A (en) * 1982-09-10 1986-04-01 Burroughs Corporation Multi-tone cancellation phrase and background
US5149140A (en) * 1991-03-11 1992-09-22 The Standard Register Company Security, information document
US5171040A (en) * 1991-03-29 1992-12-15 Invisible Images, Inc. Copy-invalidating document
US5340159A (en) * 1991-07-12 1994-08-23 The Standard Register Company Varying tone security document
US5197765A (en) * 1991-07-12 1993-03-30 The Standard Register Company Varying tone securing document
GB2262065A (en) * 1991-12-07 1993-06-09 Moore Business Forms Inc Security printed document resistant to xerographic copying.
US6039357A (en) * 1992-01-08 2000-03-21 Moore North America, Inc. Security bands to prevent counterfeiting with color copies
GB9400942D0 (en) * 1994-01-19 1994-03-16 De La Rue Thomas & Co Ltd Copy indicating security device

Also Published As

Publication number Publication date
EP0806706A1 (en) 1997-11-12
GB9609826D0 (en) 1996-07-17
GB2312872A (en) 1997-11-12

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)