WO2000040422A3 - Colorant-free thermal imaging methods - Google Patents

Colorant-free thermal imaging methods Download PDF

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Publication number
WO2000040422A3
WO2000040422A3 PCT/US2000/000158 US0000158W WO0040422A3 WO 2000040422 A3 WO2000040422 A3 WO 2000040422A3 US 0000158 W US0000158 W US 0000158W WO 0040422 A3 WO0040422 A3 WO 0040422A3
Authority
WO
WIPO (PCT)
Prior art keywords
colorant
thermal imaging
gloss
image
resolution
Prior art date
Application number
PCT/US2000/000158
Other languages
French (fr)
Other versions
WO2000040422A2 (en
Inventor
Kenneth L Bowman
Alex J Drake
Simon M Tan
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to AU25997/00A priority Critical patent/AU2599700A/en
Publication of WO2000040422A2 publication Critical patent/WO2000040422A2/en
Publication of WO2000040422A3 publication Critical patent/WO2000040422A3/en

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Classifications

    • 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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/36—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Abstract

A colorant-free thermally imaged substrate is disclosed, made by a method of using a heating element without ink or toner present to alter the gloss or orientation of a polymeric substrate wherein the heating element is controlled to provide a digital image having a resolution of from about 25 to about 1200 dots per inch (dpi). The thermal imaging method results in a gloss differential image having a resolution such at that obtained in thermal mass transfer printing techniques, but without the color. The gloss differential of the thermal image can be measured or monitored on product inventory or quality control equipment.
PCT/US2000/000158 1999-01-05 2000-01-05 Colorant-free thermal imaging methods WO2000040422A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU25997/00A AU2599700A (en) 1999-01-05 2000-01-05 Colorant-free thermal imaging of substrates and methods of making and using same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22597699A 1999-01-05 1999-01-05
US09/225,976 1999-01-05

Publications (2)

Publication Number Publication Date
WO2000040422A2 WO2000040422A2 (en) 2000-07-13
WO2000040422A3 true WO2000040422A3 (en) 2002-09-26

Family

ID=22847045

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/000158 WO2000040422A2 (en) 1999-01-05 2000-01-05 Colorant-free thermal imaging methods

Country Status (2)

Country Link
AU (1) AU2599700A (en)
WO (1) WO2000040422A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6219482A (en) * 1985-07-19 1987-01-28 Olympus Optical Co Ltd Braille recording medium and recording method
WO1995034429A1 (en) * 1994-06-10 1995-12-21 Timo Valkas A method and a device for producing symbols or shapes
JPH08187895A (en) * 1995-01-10 1996-07-23 Tohoku Ricoh Co Ltd Method and device for braille printing, and braille print head
GB2300327A (en) * 1995-04-28 1996-10-30 Eastman Kodak Co Writing elliptical spots on a thermal medium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6219482A (en) * 1985-07-19 1987-01-28 Olympus Optical Co Ltd Braille recording medium and recording method
WO1995034429A1 (en) * 1994-06-10 1995-12-21 Timo Valkas A method and a device for producing symbols or shapes
JPH08187895A (en) * 1995-01-10 1996-07-23 Tohoku Ricoh Co Ltd Method and device for braille printing, and braille print head
GB2300327A (en) * 1995-04-28 1996-10-30 Eastman Kodak Co Writing elliptical spots on a thermal medium

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 196 (M - 601)<2643> 24 June 1987 (1987-06-24) *
PATENT ABSTRACTS OF JAPAN vol. 96, no. 11 29 November 1996 (1996-11-29) *
YOSHIMICHI YONEZAWA ET AL: "A METHOD OF NONIMPACT BRAILLE PRINTER BY ELECTRO-THERMOSENSITIVE PROCESS", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART II - ELECTRONICS, vol. 71, no. 11, PART 02, 1 November 1988 (1988-11-01), pages 1 - 9, XP000093406, ISSN: 8756-663X *

Also Published As

Publication number Publication date
WO2000040422A2 (en) 2000-07-13
AU2599700A (en) 2000-07-24

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