GB1468768A - Magneto-optical display device - Google Patents

Magneto-optical display device

Info

Publication number
GB1468768A
GB1468768A GB2063975A GB2063975A GB1468768A GB 1468768 A GB1468768 A GB 1468768A GB 2063975 A GB2063975 A GB 2063975A GB 2063975 A GB2063975 A GB 2063975A GB 1468768 A GB1468768 A GB 1468768A
Authority
GB
United Kingdom
Prior art keywords
film
substrate
colour
flakes
coloured
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.)
Expired
Application number
GB2063975A
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.)
NCR Voyix Corp
Original Assignee
NCR Corp
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 NCR Corp filed Critical NCR Corp
Publication of GB1468768A publication Critical patent/GB1468768A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/09—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect
    • G02F1/091—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on magneto-optical elements, e.g. exhibiting Faraday effect based on magneto-absorption or magneto-reflection
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/17—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on variable-absorption elements not provided for in groups G02F1/015 - G02F1/169
    • G02F1/172—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on variable-absorption elements not provided for in groups G02F1/015 - G02F1/169 based on a suspension of orientable dipolar particles, e.g. suspended particles displays

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Toys (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

1468768 Coated products N C R CORP 15 May 1975 [10 June 1974] 20639/75 Heading B2E [Also in Divisions G2 and G5] A magneto-optical display device whereby different colours are selectively shown, or lettering is obscured or revealed by a magnetic-shutter effect, consists of a substrate of a certain colour and an overlying film including multiple micro-capsules each containing a liquid dispersion of magnetic flakes, the film having a colour in contrast to that of the substrate, there being sufficient microcapsules to ensure that the sum of the flatside areas of the flakes is 1.5 to 4.75 times the area of the capsular film. Magnetic alignment of the flakes parallel to the film surface results in display of the film colour, whereas alignment of the flakes perpendicular to the film surface reveals the substrate colour. The microcapsules are enclosed in, and adhered to the substrate by, a transparent polymeric binder, which may be coloured. Alternatively, the capsule walls or the liquid therein may be coloured, or again a further coating overlying the capsular film may be coloured. The microcapsules range in size from 5 to 1000 microns in diameter.
GB2063975A 1974-06-10 1975-05-15 Magneto-optical display device Expired GB1468768A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47801674A 1974-06-10 1974-06-10

Publications (1)

Publication Number Publication Date
GB1468768A true GB1468768A (en) 1977-03-30

Family

ID=23898208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2063975A Expired GB1468768A (en) 1974-06-10 1975-05-15 Magneto-optical display device

Country Status (7)

Country Link
JP (2) JPS6027003B2 (en)
CA (1) CA1023457A (en)
CH (1) CH586913A5 (en)
DE (1) DE2525223C3 (en)
FR (1) FR2280161A1 (en)
GB (1) GB1468768A (en)
SU (1) SU572224A3 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0551137A1 (en) * 1992-01-10 1993-07-14 Hankuk Glass Industries, Inc. Light-polarizing liquid suspension, and method for making the liquid suspension
EP0615629A1 (en) * 1991-11-01 1994-09-21 Research Frontiers Incorporated Light valve employing a film comprising an encapsulated liquid suspension, and method of making such film
US5463492A (en) * 1991-11-01 1995-10-31 Research Frontiers Incorporated Light modulating film of improved clarity for a light valve
US5463491A (en) * 1991-11-01 1995-10-31 Research Frontiers Incorporated Light valve employing a film comprising an encapsulated liquid suspension, and method of making such film
EP1051921A1 (en) * 1999-05-14 2000-11-15 Societe Des Produits Nestle S.A. Process for the production of cereal granules for porridges
EP1120768A2 (en) * 2000-01-26 2001-08-01 Kabushiki Kaisha Pilot Magnetic material-inverting display panel
EP1120769A2 (en) * 2000-01-26 2001-08-01 Kabushiki Kaisha Pilot Magnetic material-inverting display panel
EP1267200A1 (en) * 2001-06-12 2002-12-18 Japan Capsular Products, Inc. Magnetic display device
EP1315137A2 (en) * 2001-11-27 2003-05-28 Japan Capsular Products, Inc. Magnetic display
WO2011050128A1 (en) * 2009-10-21 2011-04-28 Sun Chemical Corporation Piezochromic device

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5947676B2 (en) * 1977-04-11 1984-11-20 株式会社パイロット magnetic panel
JPS60107689A (en) * 1983-11-16 1985-06-13 東京磁気印刷株式会社 Magnetic panel of magnet inversion display
JPS63303325A (en) * 1987-06-03 1988-12-09 Nippon Sheet Glass Co Ltd Electromagneto-optical device for optical element
JP2709707B2 (en) * 1987-07-14 1998-02-04 日本製紙 株式会社 Simple magnetic display set
JP2582798B2 (en) * 1987-08-26 1997-02-19 日本信号株式会社 Method for manufacturing visible magnetic recording sheet
JP2717536B2 (en) * 1987-12-02 1998-02-18 株式会社日本カプセルプロダクツ Magnetic display system
US4937119A (en) * 1988-12-15 1990-06-26 Hoechst Celanese Corp. Textured organic optical data storage media and methods of preparation
JP2850056B2 (en) * 1990-12-28 1999-01-27 株式会社 日本カプセルプロダクツ Magnetic display system
US5419706A (en) * 1993-06-22 1995-05-30 Levy; Richard C. Apparatus for forming images of non-visible elements underlying an opaque surface

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1536032A (en) * 1967-09-06 1968-08-09 Electrically sensitive light adjuster
US3670323A (en) * 1970-12-14 1972-06-13 Zenith Radio Corp Image-display devices comprising particle light modulators with storage

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0615629A1 (en) * 1991-11-01 1994-09-21 Research Frontiers Incorporated Light valve employing a film comprising an encapsulated liquid suspension, and method of making such film
EP0615629A4 (en) * 1991-11-01 1994-10-12 Research Frontiers Inc Light valve employing a film comprising an encapsulated liquid suspension, and method of making such film.
US5463492A (en) * 1991-11-01 1995-10-31 Research Frontiers Incorporated Light modulating film of improved clarity for a light valve
US5463491A (en) * 1991-11-01 1995-10-31 Research Frontiers Incorporated Light valve employing a film comprising an encapsulated liquid suspension, and method of making such film
EP0551137A1 (en) * 1992-01-10 1993-07-14 Hankuk Glass Industries, Inc. Light-polarizing liquid suspension, and method for making the liquid suspension
EP1051921A1 (en) * 1999-05-14 2000-11-15 Societe Des Produits Nestle S.A. Process for the production of cereal granules for porridges
AU773093B2 (en) * 2000-01-26 2004-05-13 Kabushiki Kaisha Pilot Corporation Magnetic material-inverting display panel
EP1120768A2 (en) * 2000-01-26 2001-08-01 Kabushiki Kaisha Pilot Magnetic material-inverting display panel
EP1120769A2 (en) * 2000-01-26 2001-08-01 Kabushiki Kaisha Pilot Magnetic material-inverting display panel
EP1120768A3 (en) * 2000-01-26 2003-03-26 Kabushiki Kaisha Pilot Magnetic material-inverting display panel
EP1120769A3 (en) * 2000-01-26 2003-04-09 Kabushiki Kaisha Pilot Magnetic material-inverting display panel
EP1267200A1 (en) * 2001-06-12 2002-12-18 Japan Capsular Products, Inc. Magnetic display device
EP1315137A3 (en) * 2001-11-27 2004-01-02 Japan Capsular Products, Inc. Magnetic display
EP1315137A2 (en) * 2001-11-27 2003-05-28 Japan Capsular Products, Inc. Magnetic display
WO2011050128A1 (en) * 2009-10-21 2011-04-28 Sun Chemical Corporation Piezochromic device
US8917436B2 (en) 2009-10-21 2014-12-23 Sun Chemical Corporation Piezochromic device
EP3242161A1 (en) * 2009-10-21 2017-11-08 Sun Chemical Corporation Piezochromic device

Also Published As

Publication number Publication date
FR2280161B1 (en) 1979-02-16
CA1023457A (en) 1977-12-27
FR2280161A1 (en) 1976-02-20
DE2525223A1 (en) 1975-12-18
JPS50160046A (en) 1975-12-25
DE2525223C3 (en) 1980-03-20
SU572224A3 (en) 1977-09-05
JPS5878186A (en) 1983-05-11
JPS6027003B2 (en) 1985-06-26
DE2525223B2 (en) 1979-07-05
CH586913A5 (en) 1977-04-15
JPS6223294B2 (en) 1987-05-22

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee