FR2356520A1 - Flexible, plastics thermography support - having liq. crystal layer fixed to sheet of transparent protective material maintaining light characteristics - Google Patents

Flexible, plastics thermography support - having liq. crystal layer fixed to sheet of transparent protective material maintaining light characteristics

Info

Publication number
FR2356520A1
FR2356520A1 FR7620137A FR7620137A FR2356520A1 FR 2356520 A1 FR2356520 A1 FR 2356520A1 FR 7620137 A FR7620137 A FR 7620137A FR 7620137 A FR7620137 A FR 7620137A FR 2356520 A1 FR2356520 A1 FR 2356520A1
Authority
FR
France
Prior art keywords
thermography
liq
sheet
crystal layer
support
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
FR7620137A
Other languages
French (fr)
Other versions
FR2356520B3 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7620137A priority Critical patent/FR2356520A1/en
Publication of FR2356520A1 publication Critical patent/FR2356520A1/en
Application granted granted Critical
Publication of FR2356520B3 publication Critical patent/FR2356520B3/fr
Granted 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
    • 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
    • B41M5/28—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating
    • B41M5/281—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating using liquid crystals only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G01K11/16—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials
    • G01K11/165—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials of organic liquid crystals

Abstract

The support comprises a base of flexible material, strong and with good heat conductivity through its thickness but poor conductivity in other directions, e.g. of polyester. It is placed on the surface to be subjected to thermography e.g. the skin of humans or animals, the surface having been covered with a coating of opaque material, of good heat conductivity solely through its thickness and absorbing ultra-violet rays. There are ont or more layers of micro-encapsulated liq. crystals sensitive to temp. and calibrated as a function of the thermography temps. to be investigated. The crystal layer has a thickness kept strictly to a constant value of 25-250 mu, and is fixed to a sheet of transparent protective material maintaining the characteristics of the light passing through it. The polyester material is pre-treated to allow the crystal layers to be secures to the transparent support.
FR7620137A 1976-07-01 1976-07-01 Flexible, plastics thermography support - having liq. crystal layer fixed to sheet of transparent protective material maintaining light characteristics Granted FR2356520A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7620137A FR2356520A1 (en) 1976-07-01 1976-07-01 Flexible, plastics thermography support - having liq. crystal layer fixed to sheet of transparent protective material maintaining light characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7620137A FR2356520A1 (en) 1976-07-01 1976-07-01 Flexible, plastics thermography support - having liq. crystal layer fixed to sheet of transparent protective material maintaining light characteristics

Publications (2)

Publication Number Publication Date
FR2356520A1 true FR2356520A1 (en) 1978-01-27
FR2356520B3 FR2356520B3 (en) 1979-03-23

Family

ID=9175121

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7620137A Granted FR2356520A1 (en) 1976-07-01 1976-07-01 Flexible, plastics thermography support - having liq. crystal layer fixed to sheet of transparent protective material maintaining light characteristics

Country Status (1)

Country Link
FR (1) FR2356520A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462736A1 (en) * 1979-07-30 1981-02-13 Riso Kagaku Corp METHOD AND DEVICE FOR ELECTROMAGNETIC RADIATION DUPLICATION
EP0159965A2 (en) * 1984-04-25 1985-10-30 ILFORD Limited Method of monitoring temperatureand device for carrying out said method
CN109141670A (en) * 2017-06-27 2019-01-04 江苏和成显示科技有限公司 A kind of excess temperature monitoring device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462736A1 (en) * 1979-07-30 1981-02-13 Riso Kagaku Corp METHOD AND DEVICE FOR ELECTROMAGNETIC RADIATION DUPLICATION
EP0159965A2 (en) * 1984-04-25 1985-10-30 ILFORD Limited Method of monitoring temperatureand device for carrying out said method
EP0159965A3 (en) * 1984-04-25 1986-10-01 ILFORD Limited Method of monitoring temperatureand device for carrying out said method
CN109141670A (en) * 2017-06-27 2019-01-04 江苏和成显示科技有限公司 A kind of excess temperature monitoring device

Also Published As

Publication number Publication date
FR2356520B3 (en) 1979-03-23

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Legal Events

Date Code Title Description
ST Notification of lapse