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EP1618983A4 - Method for producing a laser marking on reflective material - Google Patents

Method for producing a laser marking on reflective material

Info

Publication number
EP1618983A4
EP1618983A4 EP04729405A EP04729405A EP1618983A4 EP 1618983 A4 EP1618983 A4 EP 1618983A4 EP 04729405 A EP04729405 A EP 04729405A EP 04729405 A EP04729405 A EP 04729405A EP 1618983 A4 EP1618983 A4 EP 1618983A4
Authority
EP
European Patent Office
Prior art keywords
laser
reflective
laser beam
reflective material
rough surfaces
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.)
Granted
Application number
EP04729405A
Other languages
German (de)
French (fr)
Other versions
EP1618983A1 (en
EP1618983B1 (en
Inventor
Kam Fuk Derek Ip
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.)
Merit Corp Ltd
Original Assignee
Merit 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 Merit Corp Ltd filed Critical Merit Corp Ltd
Publication of EP1618983A1 publication Critical patent/EP1618983A1/en
Publication of EP1618983A4 publication Critical patent/EP1618983A4/en
Application granted granted Critical
Publication of EP1618983B1 publication Critical patent/EP1618983B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/24—Ablative recording, e.g. by burning marks; Spark recording

Landscapes

  • Optical Elements Other Than Lenses (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Credit Cards Or The Like (AREA)
  • Laser Beam Processing (AREA)

Abstract

A method for producing a laser mark on reflective material by a laser beam is provided, wherein a plurality of images on the same laser mark can be observed only from different view angles. The method includes the steps of selectively vaporizing the sides of each group of reflective bodies to form rough surfaces by a laser beam with a certain incident angle, and then selectively vaporizing another side of said each group of reflective bodies to form rough surfaces by a laser beam with another incident angle. Due to the different reflectivity of the rough surfaces and the unrough surfaces, dark spots and bright spots are respectively formed and hence constitute pictures. Therefore, different images may be recorded and shown on the same reflective body by means of more than one surfaces thereof. The commercial reflective material can be used in the method of the invention, so that middle or small manufacturers can produce laser marks with high quality, low cost, excellent optical effect and high difficulty of counterfeit by common computers and laser scanning devices.
EP04729405A 2003-04-25 2004-04-26 Method for producing a laser marking on reflective material Expired - Lifetime EP1618983B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB031279635A CN100421966C (en) 2003-04-25 2003-04-25 Method for processing laser mark on reflecting material
PCT/CN2004/000406 WO2004101210A1 (en) 2003-04-25 2004-04-26 Method for producing a laser marking on reflective material

Publications (3)

Publication Number Publication Date
EP1618983A1 EP1618983A1 (en) 2006-01-25
EP1618983A4 true EP1618983A4 (en) 2007-07-04
EP1618983B1 EP1618983B1 (en) 2009-03-04

Family

ID=33438168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04729405A Expired - Lifetime EP1618983B1 (en) 2003-04-25 2004-04-26 Method for producing a laser marking on reflective material

Country Status (6)

Country Link
US (1) US20060213871A1 (en)
EP (1) EP1618983B1 (en)
CN (1) CN100421966C (en)
AT (1) ATE424306T1 (en)
DE (1) DE602004019773D1 (en)
WO (1) WO2004101210A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2921012A1 (en) * 2007-09-13 2009-03-20 Advanced Track And Trace Sa Surface marking method for e.g. document, involves determining image representing information, and marking surface with polarized laser beam to form oriented nanostructures representing image on surface
CN101823382B (en) * 2010-03-30 2012-05-09 深圳市大族激光科技股份有限公司 Method for carrying out laser marking on surface of workpiece
RU2460619C2 (en) * 2010-12-07 2012-09-10 Общество с ограниченной ответственностью "Лазерный Центр" Metal or alloy laser etching method
CN107907994A (en) * 2017-11-28 2018-04-13 苏州天弘激光股份有限公司 A kind of production method of the false proof water ripples of reflective membrane

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6217175B1 (en) * 1998-06-26 2001-04-17 Intel Corporation Laser marking process on retro-reflective material for security labels
WO2003005075A1 (en) * 2001-07-03 2003-01-16 3M Innovative Properties Company Microlens sheeting with composite image that appears to float

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2584136B2 (en) * 1991-03-01 1997-02-19 松下電器産業株式会社 Image forming device
US5533997A (en) * 1994-06-29 1996-07-09 Ruiz; Luis A. Apparatus and method for performing presbyopia corrective surgery
CN1163199A (en) * 1996-01-08 1997-10-29 日本化药株式会社 Laser marked product and laser marking method
US6231196B1 (en) * 1997-03-27 2001-05-15 Precision Laser Marking, Inc. Laser marking process and products
US6172328B1 (en) * 1998-02-17 2001-01-09 Advanced Foliar Technologies, Inc. Laser marking of plant material
TW487959B (en) * 1999-08-13 2002-05-21 Semiconductor Energy Lab Laser apparatus, laser annealing method, and manufacturing method of a semiconductor device
DE10139980A1 (en) * 2001-08-21 2003-03-13 Foba Gmbh Elektronik & Lasersy Processing device, especially for laser engraving, marking or inscribing has pump light from diode laser fed to laser rod essentially along straight line that intersects rod cross-sectional area

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6217175B1 (en) * 1998-06-26 2001-04-17 Intel Corporation Laser marking process on retro-reflective material for security labels
WO2003005075A1 (en) * 2001-07-03 2003-01-16 3M Innovative Properties Company Microlens sheeting with composite image that appears to float

Also Published As

Publication number Publication date
HK1087058A1 (en) 2006-10-06
WO2004101210A1 (en) 2004-11-25
US20060213871A1 (en) 2006-09-28
CN100421966C (en) 2008-10-01
CN1539589A (en) 2004-10-27
EP1618983A1 (en) 2006-01-25
EP1618983B1 (en) 2009-03-04
DE602004019773D1 (en) 2009-04-16
ATE424306T1 (en) 2009-03-15

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