WO2008133113A1 - True/false judging method, discriminator and polarizer - Google Patents

True/false judging method, discriminator and polarizer Download PDF

Info

Publication number
WO2008133113A1
WO2008133113A1 PCT/JP2008/057351 JP2008057351W WO2008133113A1 WO 2008133113 A1 WO2008133113 A1 WO 2008133113A1 JP 2008057351 W JP2008057351 W JP 2008057351W WO 2008133113 A1 WO2008133113 A1 WO 2008133113A1
Authority
WO
WIPO (PCT)
Prior art keywords
true
false
layer
judging
discriminator
Prior art date
Application number
PCT/JP2008/057351
Other languages
French (fr)
Japanese (ja)
Inventor
Yoshikichi Somoto
Noriyuki Ito
Toru Murakami
Takashi Shimamura
Mari Suzuki
Original Assignee
Toppan Printing 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 Toppan Printing Co., Ltd. filed Critical Toppan Printing Co., Ltd.
Priority to JP2009511811A priority Critical patent/JP5375603B2/en
Publication of WO2008133113A1 publication Critical patent/WO2008133113A1/en

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/0005Adaptation of holography to specific applications
    • G03H1/0011Adaptation of holography to specific applications for security or authentication
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H1/0252Laminate comprising a hologram layer
    • G03H1/0256Laminate comprising a hologram layer having specific functional layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/328Diffraction gratings; Holograms
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2223/00Optical components
    • G03H2223/14Diffuser, e.g. lens array, random phase mask
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2250/00Laminate comprising a hologram layer
    • G03H2250/42Reflective layer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Credit Cards Or The Like (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Polarising Elements (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

[PROBLEMS TO BE SOLVED] It is a problem to provide a method for making it possible to judge whether a subject is true or false and a tool for judging whether it is true or false without being influenced by a shine of metal used in the true-false judgment of a forgery preventive body with a reflective thin film layer of a metallic thin film or the like. [MEANS FOR SOLVING THE PROBLEM] A true/false judging method for judging whether a sheet-like counterfeit preventive structure provided with at least a light reflective thin film layer and a counterfeit preventive layer is true or false is carried out by using a discriminator. The method is characterized in that the true/false judgment is carried out by using the discriminator provided with a light diffusive true/false judging layer for judging whether the sheet-like counterfeit preventive structure is true or false or a true/false judging layer and a light diffusive layer for judging whether the sheet-like counterfeit preventive structure is true or false; a haze of the light diffusive true/false judging layer or the light diffusing layer ranges from 50-95%; and a total light-ray transmission rate ranges from 50-100%.
PCT/JP2008/057351 2007-04-18 2008-04-15 True/false judging method, discriminator and polarizer WO2008133113A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009511811A JP5375603B2 (en) 2007-04-18 2008-04-15 Authenticity determination method and discriminator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-109120 2007-04-18
JP2007109120 2007-04-18

Publications (1)

Publication Number Publication Date
WO2008133113A1 true WO2008133113A1 (en) 2008-11-06

Family

ID=39925571

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/057351 WO2008133113A1 (en) 2007-04-18 2008-04-15 True/false judging method, discriminator and polarizer

Country Status (2)

Country Link
JP (1) JP5375603B2 (en)
WO (1) WO2008133113A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011033790A (en) * 2009-07-31 2011-02-17 Fujifilm Corp Forgery preventing medium and forgery preventing seal
JP2012226260A (en) * 2011-04-22 2012-11-15 Toppan Printing Co Ltd Forgery prevention medium
JP2013007887A (en) * 2011-06-24 2013-01-10 Fujifilm Corp Method for manufacturing article having birefringence

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0933721A (en) * 1995-07-25 1997-02-07 Arisawa Mfg Co Ltd Translucent polarizing plate for display device, its production and display device
JPH09193332A (en) * 1996-01-16 1997-07-29 Dainippon Printing Co Ltd Glare protecting film
JPH10119067A (en) * 1996-10-22 1998-05-12 Dainippon Printing Co Ltd Manufacture of triacetylcellulose film having antigrare property
JP2001096997A (en) * 1999-10-01 2001-04-10 Toppan Printing Co Ltd Method for preventing forgery of ovd forming medium, ovd forming medium having forgery prevention applied and ovd seal using the ovd forming medium
JP2001096999A (en) * 1999-10-01 2001-04-10 Toppan Printing Co Ltd Method for preventing forgery of ovd forming sheet, ovd forming sheet having forgery prevention applied and ovd seal using the ovd forming sheet
JP2001105800A (en) * 1999-08-04 2001-04-17 Toppan Printing Co Ltd Forgery preventing method for image receiving sheet, image receiving sheet provided with forgery prevention function and image display body using the image receiving sheet
JP2002248712A (en) * 2001-02-23 2002-09-03 Toppan Printing Co Ltd Anti-glaring sheet
JP2004004777A (en) * 2002-04-24 2004-01-08 Dainippon Printing Co Ltd Glare shield film, polarizing element and picture display apparatus
WO2005073763A1 (en) * 2004-01-29 2005-08-11 Nippon Paint Co., Ltd. Antidazzle coating composition, antidazzle film and process for producing the same

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0933721A (en) * 1995-07-25 1997-02-07 Arisawa Mfg Co Ltd Translucent polarizing plate for display device, its production and display device
JPH09193332A (en) * 1996-01-16 1997-07-29 Dainippon Printing Co Ltd Glare protecting film
JPH10119067A (en) * 1996-10-22 1998-05-12 Dainippon Printing Co Ltd Manufacture of triacetylcellulose film having antigrare property
JP2001105800A (en) * 1999-08-04 2001-04-17 Toppan Printing Co Ltd Forgery preventing method for image receiving sheet, image receiving sheet provided with forgery prevention function and image display body using the image receiving sheet
JP2001096997A (en) * 1999-10-01 2001-04-10 Toppan Printing Co Ltd Method for preventing forgery of ovd forming medium, ovd forming medium having forgery prevention applied and ovd seal using the ovd forming medium
JP2001096999A (en) * 1999-10-01 2001-04-10 Toppan Printing Co Ltd Method for preventing forgery of ovd forming sheet, ovd forming sheet having forgery prevention applied and ovd seal using the ovd forming sheet
JP2002248712A (en) * 2001-02-23 2002-09-03 Toppan Printing Co Ltd Anti-glaring sheet
JP2004004777A (en) * 2002-04-24 2004-01-08 Dainippon Printing Co Ltd Glare shield film, polarizing element and picture display apparatus
WO2005073763A1 (en) * 2004-01-29 2005-08-11 Nippon Paint Co., Ltd. Antidazzle coating composition, antidazzle film and process for producing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011033790A (en) * 2009-07-31 2011-02-17 Fujifilm Corp Forgery preventing medium and forgery preventing seal
JP2012226260A (en) * 2011-04-22 2012-11-15 Toppan Printing Co Ltd Forgery prevention medium
JP2013007887A (en) * 2011-06-24 2013-01-10 Fujifilm Corp Method for manufacturing article having birefringence

Also Published As

Publication number Publication date
JPWO2008133113A1 (en) 2010-07-22
JP5375603B2 (en) 2013-12-25

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