EP0466097A2 - Magnetisch betriebene Anzeigevorrichtung und Verfahren zu ihrer Herstellung - Google Patents

Magnetisch betriebene Anzeigevorrichtung und Verfahren zu ihrer Herstellung Download PDF

Info

Publication number
EP0466097A2
EP0466097A2 EP91111407A EP91111407A EP0466097A2 EP 0466097 A2 EP0466097 A2 EP 0466097A2 EP 91111407 A EP91111407 A EP 91111407A EP 91111407 A EP91111407 A EP 91111407A EP 0466097 A2 EP0466097 A2 EP 0466097A2
Authority
EP
European Patent Office
Prior art keywords
display element
coating
station
magnetic
magnetic particles
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
EP91111407A
Other languages
English (en)
French (fr)
Other versions
EP0466097B1 (de
EP0466097A3 (en
Inventor
Oded Peled
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
Publication of EP0466097A2 publication Critical patent/EP0466097A2/de
Publication of EP0466097A3 publication Critical patent/EP0466097A3/en
Application granted granted Critical
Publication of EP0466097B1 publication Critical patent/EP0466097B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
    • G09F9/375—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the position of the elements being controlled by the application of a magnetic field

Definitions

  • the present invention relates to magnetically-actuated display elements, and also to a method of making such display elements.
  • the invention is particularly applicable to making the disc-shape display elements as described, for example, in US Patents 3,871,945 and 3,942,274, and is therefore described below with respect to such an application, but it will be appreciated that the invention could advantageously be used in making display elements of other configurations, for example of spherical or cylindrical configuration.
  • Magnetically-actuated displays of the foregoing type comprise a plurality of display elements of disc configuration arranged in a rectangular matrix of horizontal rows and vertical columns, with each display element being coloured with contrasting colours on the its opposite sufaces.
  • Each display element is pivotally mounted to a supporting member to permit it to be pivoted to two stable positions.
  • Each element displays one of the surfaces of contrasting colour, and includes a magnet cooperable with fixed electromagnetic means on the supporting member for pivoting the display element to selected positions in order to produce variable displays among the plurality of display elements.
  • each display element is a magnetic body occupying a relatively small area of the display element.
  • This requires the magnetic body to be of appreciable thickness, and thereby requires the display element also to be of appreciable thickness.
  • Such a construction increases the mass of the display element, and therefore the time and/or power required to change the displays.
  • displays using such a construction are relatively expensive to produce.
  • An object of the present invention is to provide a display element for magnetically-actuated displays having advantages in the above respects.
  • a magnetically-actuated display element comprising a plurality of surfaces of contrasting colour, mounting means for movably mounting the display element to permit it to assume a plurality of stable positions each displaying one of said surfaces of one of contrasting colour, and a magnet carried by the display element and cooperable with fixed electromagnetic means for moving said display element to a selected one of its plurality of stable positions; characterized in that said display element comprises a non-magnetic substrate, and a coating thereover of magnetic particles bound to the non-magnetic substrate by an adhesive.
  • the display element is of disc shape and is formed with a pair of diametrically-opposed ears constituting the mounting means and permitting pivoting the disc to one of two stable positions, one face of the disc being one of the colours, and the opposite face of the disc carrying the coating of magnetic particles and being of the other colour.
  • the other colour is preferably in the form of a coating of colouring matter over the coating of magnetic particles bound to the substrate.
  • the adhesive is preferably an epoxy resin; and the non-magnetic substrate is preferably of plastic material, such as Mylar plastic film. It is contemplated, however, that the non-magnetic substrate may also be of metal, such as copper or aluminum.
  • the present invention also provides a method of making the above-described display elements comprising: feeding a continuous strip of the non-magnetic substrate, having one face coloured with the one colour, through a plurality of stations; coating the opposite face of the strip with the adhesive at one station; coating the adhesive with a layer of the magnetic particles at a second station; drying the adhesive to bind the magnetic particles to the opposite face of the strip at a third station; coating the layer of magnetic particles with the other colour at a fourth station; and punching out the disc-shaped display elements from the strip at a fifth station.
  • relatively thin display elements may be constructed in accordance with the present invention in volume and at low cost.
  • a continuous strip, generally designated 2 of a non-magnetic substrate is continuously fed through a plurality of stations at which various processes are formed on the continuous strip to produce a plurality of display elements 4 at the final station in the process.
  • the continuous strip 2 may be of a plastic material, such as Mylar plastic film; alternatively, it could be of a metal, such as copper or aluminum. In either case, it is of one colour on one face (that hidden from view in the drawing), while the various operations are formed on the opposite face (that exposed to view).
  • the continuous strip 2 is first passed to an adhesive station 10 wherein a coating of adhesive supplied from a reservoir 12 is applied, as by spraying, brushing or calendering, onto the exposed face of the strip to cover substantially the complete surface with the adhesive, as shown at 14.
  • a coating of adhesive supplied from a reservoir 12 is applied, as by spraying, brushing or calendering, onto the exposed face of the strip to cover substantially the complete surface with the adhesive, as shown at 14.
  • the strip is passed through station 20 at which magnetic particles, preferably in fine powder form, are applied from a reservoir 22 to coat substantially the complete surface of the adhesive coating 14, as shown at 24.
  • the strip is then applied through a dryer station 30 wherein the adhesive is dried and thereby to bind the magnetic particles 24 to the respective face of strip 2.
  • the continuous strip 2 is passed through a colour-coating station 40, in which colouring matter is applied, as by spraying, onto the dried coating of magnetic particles.
  • the colour of the mattter applied at station 40 is of course of a contrasting colour from that carried by the hidden surface of the strip.
  • the continuous strip 2 is fed through another drying station 50, and then through a magnetizing station 60 in which an electromagnetic 62 magnetizes the coating of magnetic particles.
  • the magnetic particles are of "hard” magnetic material, so that the particles are thereby permanently magnetized in a predetermined direction.
  • the continuous strip 2 is passed through a punching station 70, wherein a punch 72, in the shape of the display element 4 to be produced, punches out the display elements 4 from the continuous strip 2.
  • the display elements 4 so-produced are of disc shape and include ears 4a at diametrically-opposite sides so as to permit a plurality of such display elements to be pivotally mounted in the form of rectangular matrices in their respective housings, as shown at 80 in Fig. 2. Since such matrices and housings are well-known, for example as described in the above-cited patents, they are not illustrated in detail herein. It will be appreciated, however, that such housings include fixed electromagnets, shown schematically at 82, which are selectively energizable to pivot the display elements to a respective one of their two stable positions, i.e., exposing one or the other face, thereby to selectively expose one or the other of their colours according to the information to be displayed.
  • the continuous strip 2 may be of any suitable non-magnetic material, such as plastic or metal.
  • it should be sufficiently stiff so that the display element, produced by applying to it the various layers described above, retains its shape when such display elements are mounted in the display housing as shown in Fig. 2, but preferably should be sufficiently flexible to permit the display element to be manually flexed in order to snap its ears 4a into the openings provided in the display housing for pivotally mounting the display elements.
  • the invention enables the production of relatively thin display elements in a continuous, low-cost and high-volume manner.
  • the display element may be of cylindrical, spherical, or other shape.
  • the coating of magnetic particles could be applied to a substrate which is adhesively bonded to the display element.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Burglar Alarm Systems (AREA)
EP91111407A 1990-07-10 1991-07-09 Magnetisch betriebene Anzeigevorrichtung und Verfahren zu ihrer Herstellung Expired - Lifetime EP0466097B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL95017 1990-07-10
IL9501790A IL95017A (en) 1990-07-10 1990-07-10 Magnetically-actuated display elements and method of making same

Publications (3)

Publication Number Publication Date
EP0466097A2 true EP0466097A2 (de) 1992-01-15
EP0466097A3 EP0466097A3 (en) 1992-07-22
EP0466097B1 EP0466097B1 (de) 1995-12-06

Family

ID=11061389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111407A Expired - Lifetime EP0466097B1 (de) 1990-07-10 1991-07-09 Magnetisch betriebene Anzeigevorrichtung und Verfahren zu ihrer Herstellung

Country Status (7)

Country Link
EP (1) EP0466097B1 (de)
AT (1) ATE131304T1 (de)
CA (1) CA2046462A1 (de)
DE (1) DE69115143T2 (de)
ES (1) ES2081395T3 (de)
GR (1) GR3019210T3 (de)
IL (1) IL95017A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001095008A2 (en) * 2000-06-05 2001-12-13 3M Innovative Properties Company Variable image-displaying member
US6919581B2 (en) * 2000-08-18 2005-07-19 Sony Corporation Image display unit and production method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2411560A1 (de) * 1973-03-12 1974-09-26 Ferranti Ltd Verfahren zur herstellung von magnetisch drehbaren zeichenelementen
DE2513550A1 (de) * 1974-04-15 1975-10-23 Ferranti Ltd Vorrichtung zur darstellung von zeichen, insbesondere buchstaben
EP0285579A2 (de) * 1987-03-31 1988-10-05 S.I.P.A.P. SAS DI DEMICHELIS MARGHERITA & C. Verfahren zur Herstellung eines magnetischen Kunststofflaminats und nach diesem Verfahren hergestelltes magnetisches Laminat

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2411560A1 (de) * 1973-03-12 1974-09-26 Ferranti Ltd Verfahren zur herstellung von magnetisch drehbaren zeichenelementen
DE2513550A1 (de) * 1974-04-15 1975-10-23 Ferranti Ltd Vorrichtung zur darstellung von zeichen, insbesondere buchstaben
DE2513551A1 (de) * 1974-04-15 1975-10-30 Ferranti Ltd Vorrichtung zur darstellung von zeichen, insbesondere buchstaben
EP0285579A2 (de) * 1987-03-31 1988-10-05 S.I.P.A.P. SAS DI DEMICHELIS MARGHERITA & C. Verfahren zur Herstellung eines magnetischen Kunststofflaminats und nach diesem Verfahren hergestelltes magnetisches Laminat

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001095008A2 (en) * 2000-06-05 2001-12-13 3M Innovative Properties Company Variable image-displaying member
WO2001095008A3 (en) * 2000-06-05 2003-01-09 3M Innovative Properties Co Variable image-displaying member
US6557279B2 (en) 2000-06-05 2003-05-06 3M Innovative Properties Company Variable image-displaying member
US6919581B2 (en) * 2000-08-18 2005-07-19 Sony Corporation Image display unit and production method thereof

Also Published As

Publication number Publication date
IL95017A (en) 1995-07-31
EP0466097B1 (de) 1995-12-06
DE69115143T2 (de) 1996-05-09
CA2046462A1 (en) 1992-01-11
DE69115143D1 (de) 1996-01-18
ES2081395T3 (es) 1996-03-01
ATE131304T1 (de) 1995-12-15
GR3019210T3 (en) 1996-06-30
EP0466097A3 (en) 1992-07-22
IL95017A0 (en) 1991-06-10

Similar Documents

Publication Publication Date Title
CN100543767C (zh) 制造用于射频识别标签的天线的方法
CA2223139C (en) Magnetic cards
US6124650A (en) Non-volatile MEMS micro-relays using magnetic actuators
CA1089964A (en) Displaying magnetic panel and its display device
US3093919A (en) Magnetic display arrangement
CN1966278B (zh) 用于印刷光学效果的磁板
EP0406667A1 (de) Verfahren zur Herstellung einer gemusterten Beschichtung
US3812490A (en) Flexible membrane display panel for generating characters visible in ambient light
EP0354759A3 (de) Elektromagnetisches Identifikationssystem
US11676839B2 (en) Method for making adsorption device
WO2003030093A3 (de) Transponder-etikett
EP0466097B1 (de) Magnetisch betriebene Anzeigevorrichtung und Verfahren zu ihrer Herstellung
US4825205A (en) Changeable display unit for use in a sign device
EP0758792B1 (de) Koppelfeld
CA2167734A1 (en) Planning and toy assemblies, and the like, employing movable elements of permanent magnetic material
US4613874A (en) Magnetic printing
JPH0219830Y2 (de)
JPH047518B2 (de)
CA2281081A1 (en) Display device and array
EP0526248B1 (de) Anzeigen mit rotierenden Prismen
EP0305525B1 (de) Elektrisch leitendes durchsichtiges material und anzeigeanordnung unter verwendung des elektrisch leitenden durchsichtigen materials
US20030043092A1 (en) Image display medium and image display apparatus
JP3297807B1 (ja) 磁気吸着シートおよびその製造方法
JP2002350907A (ja) 表示媒体
CA2319237A1 (en) Magnetic markers or tags

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE

17P Request for examination filed

Effective date: 19930324

17Q First examination report despatched

Effective date: 19941128

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19951206

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19951206

Ref country code: DK

Effective date: 19951206

Ref country code: CH

Effective date: 19951206

Ref country code: BE

Effective date: 19951206

Ref country code: AT

Effective date: 19951206

REF Corresponds to:

Ref document number: 131304

Country of ref document: AT

Date of ref document: 19951215

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 69115143

Country of ref document: DE

Date of ref document: 19960118

ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2081395

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960306

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3019210

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960709

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960710

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19970201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960709

REG Reference to a national code

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3019210

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970328

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19970201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970402

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19970811

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050709