SE7909041L - Kopieringssekrat dokument och sett att framstella detta - Google Patents

Kopieringssekrat dokument och sett att framstella detta

Info

Publication number
SE7909041L
SE7909041L SE7909041A SE7909041A SE7909041L SE 7909041 L SE7909041 L SE 7909041L SE 7909041 A SE7909041 A SE 7909041A SE 7909041 A SE7909041 A SE 7909041A SE 7909041 L SE7909041 L SE 7909041L
Authority
SE
Sweden
Prior art keywords
image
document
line
background
defeat
Prior art date
Application number
SE7909041A
Other languages
Unknown language ( )
English (en)
Inventor
Alfred V Alasia
Original Assignee
Alasia Alfred Victor
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 Alasia Alfred Victor filed Critical Alasia Alfred Victor
Publication of SE7909041L publication Critical patent/SE7909041L/sv

Links

Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00838—Preventing unauthorised reproduction
    • H04N1/00883—Auto-copy-preventive originals, i.e. originals that are designed not to allow faithful reproduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Printing Methods (AREA)
  • Cleaning In Electrography (AREA)
SE7909041A 1979-01-23 1979-11-01 Kopieringssekrat dokument och sett att framstella detta SE7909041L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US572779A 1979-01-23 1979-01-23

Publications (1)

Publication Number Publication Date
SE7909041L true SE7909041L (sv) 1980-07-24

Family

ID=21717410

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7909041A SE7909041L (sv) 1979-01-23 1979-11-01 Kopieringssekrat dokument och sett att framstella detta

Country Status (4)

Country Link
AU (1) AU5109979A (sv)
GB (1) GB2040224A (sv)
NL (1) NL7907996A (sv)
SE (1) SE7909041L (sv)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8818431D0 (en) * 1988-08-03 1988-09-07 Kenrick & Jefferson Ltd Copy protection of multi-colour documents
DD291962A5 (de) * 1989-02-23 1991-07-18 ��@��@���@�����@�K@�Kk�� Wertschein, insbesondere banknote, mit einem sicherheitsmuster und verfahren zu dessen herstellung
US5340159A (en) * 1991-07-12 1994-08-23 The Standard Register Company Varying tone security document
ES2109163B1 (es) * 1995-05-18 1998-07-01 Nacional Moneda Timbre Procedimiento de securizacion de productos impresos y elementos de seguridad obtenidos con dicho procedimiento.
ES2119705B1 (es) * 1996-10-31 1999-04-16 Nacional De Mondeda Y Timbre F Procedimiento para la obtencion de un elemento variable opticamente (evo) y documentos que lo incorporan.
US5954368A (en) * 1996-11-19 1999-09-21 The Standard Register Company Security document containing a non-orthogonal array
US7180635B2 (en) 2002-05-30 2007-02-20 Xerox Corporation Halftone image gloss control for glossmarks
US7193751B2 (en) * 2002-12-12 2007-03-20 Xerox Corporation Tag control for runtime glossmarks
US8248661B2 (en) 2007-02-12 2012-08-21 Xerox Corporation Color-consistent three level differential gloss images

Also Published As

Publication number Publication date
AU5109979A (en) 1980-07-31
NL7907996A (nl) 1980-07-25
GB2040224A (en) 1980-08-28

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Legal Events

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