MTP844B - - Google Patents

Info

Publication number
MTP844B
MTP844B MT844A MTP844A MTP844B MT P844 B MTP844 B MT P844B MT 844 A MT844 A MT 844A MT P844 A MTP844 A MT P844A MT P844 B MTP844 B MT P844B
Authority
MT
Malta
Application number
MT844A
Inventor
Sidney Albert Ridler
Original Assignee
Adbury Wilkinson And Co 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 Adbury Wilkinson And Co Ltd filed Critical Adbury Wilkinson And Co Ltd
Publication of MTP844B publication Critical patent/MTP844B/xx

Links

Classifications

    • 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
    • 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
    • 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
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
  • Cleaning In Electrography (AREA)
  • Color Printing (AREA)
MT844A 1978-04-11 1979-03-28 MTP844B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1422378 1978-04-11

Publications (1)

Publication Number Publication Date
MTP844B true MTP844B (en) 1980-05-21

Family

ID=10037273

Family Applications (1)

Application Number Title Priority Date Filing Date
MT844A MTP844B (en) 1978-04-11 1979-03-28

Country Status (5)

Country Link
DE (1) DE2914831A1 (en)
GB (1) GB2018197B (en)
IE (1) IE48093B1 (en)
MT (1) MTP844B (en)
NL (1) NL7902472A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420175A (en) * 1980-12-22 1983-12-13 Burroughs Corporation Color copy resistant document using irregular outline letters in a multi-void background
JPS59222398A (en) * 1983-05-31 1984-12-14 株式会社細川活版所 Print suitable for forgery prevention
GB2167010A (en) * 1984-10-04 1986-05-21 Canadian Bank Note Co Ltd Security documents adapted to reveal photocopying
GB8818431D0 (en) * 1988-08-03 1988-09-07 Kenrick & Jefferson Ltd Copy protection of multi-colour documents
DD291962A5 (en) * 1989-02-23 1991-07-18 ��@��@���@�����@�K@�Kk�� BOOKSHOP, IN PARTICULAR BANKNOTE, WITH A SAFETY PATTERN AND METHOD FOR THE PRODUCTION THEREOF
AT398407B (en) * 1989-03-31 1994-12-27 Ueberreuter Endlos Computer Fo Copy-protected printed products, film for their production by printing and method for identifying copies of printed products
GB2262065A (en) * 1991-12-07 1993-06-09 Moore Business Forms Inc Security printed document resistant to xerographic copying.
US5853197A (en) * 1996-03-05 1998-12-29 The Standard Register Company Security document
US20090121471A1 (en) * 2007-01-31 2009-05-14 Gaffney Gene F Method and system for producing documents, websites, and the like having security features
US7740281B2 (en) 2007-01-31 2010-06-22 The Ergonomic Group Method and system for producing certified documents and the like
JP5137451B2 (en) * 2007-04-19 2013-02-06 キヤノン株式会社 Image forming apparatus
FR3007323B1 (en) * 2013-06-19 2018-01-26 Ceag Comptoir Europeen Des Arts Graphiques DEVICE AGAINST THE FALSIFICATION OF ALL PRINTED DOCUMENTS BY CHANGING THE INTITLE BETWEEN THE ORIGINAL AND ITS COPY OBTAINED DURING A PHOTOCOPY OR COMPUTER SCANNING DUPLICATION

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE227601C (en) * 1900-01-01
US3471172A (en) * 1967-04-25 1969-10-07 Transmarine Corp Scrip for use with paper security validation apparatus
SE379873B (en) * 1972-11-07 1975-10-20 Ericsson Telefon Ab L M

Also Published As

Publication number Publication date
GB2018197A (en) 1979-10-17
DE2914831A1 (en) 1979-10-18
IE790642L (en) 1979-10-11
IE48093B1 (en) 1984-09-19
NL7902472A (en) 1979-10-15
GB2018197B (en) 1982-06-03

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