EP1529274B1 - Dispositif pour creer des images et des textes pouvant etre reconnus sous l'effet de la lumiere incidente - Google Patents

Dispositif pour creer des images et des textes pouvant etre reconnus sous l'effet de la lumiere incidente Download PDF

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Publication number
EP1529274B1
EP1529274B1 EP03790891A EP03790891A EP1529274B1 EP 1529274 B1 EP1529274 B1 EP 1529274B1 EP 03790891 A EP03790891 A EP 03790891A EP 03790891 A EP03790891 A EP 03790891A EP 1529274 B1 EP1529274 B1 EP 1529274B1
Authority
EP
European Patent Office
Prior art keywords
ink
type area
duct
chamber
color
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 - Lifetime
Application number
EP03790891A
Other languages
German (de)
English (en)
Other versions
EP1529274A1 (fr
Inventor
Friedrich-Josef Sacher
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.)
ASPRE AG
Original Assignee
ASPRE AG
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 ASPRE AG filed Critical ASPRE AG
Publication of EP1529274A1 publication Critical patent/EP1529274A1/fr
Application granted granted Critical
Publication of EP1529274B1 publication Critical patent/EP1529274B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G09F9/377—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 positions of the elements being controlled by pneumatic means
    • 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
    • G09F9/372—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 positions of the elements being controlled by the application of an electric field

Definitions

  • the invention relates to an apparatus for generating recognizable by conspicuous light images and texts, wherein the image surface is composed of numerous electronically controllable, grid-like arranged dot elements and in which each dot element has at least one color mirror, of at least one on the flat side transparent container is formed and whose interior communicates via a channel with a paint container, the content can be set by electronic control so under pressure that passes from the ink container color in the color mirror and reducing the pressure in the ink container, the color of the color mirror transported back into the paint container.
  • each dot element or each pixel can assume two colors, namely either the color of the rear wall of the color mirror or the color coming out of the ink tank the color mirror is pressed.
  • the transport of the colors from the ink containers into the color mirrors takes place by means of piezoelectric actuators or by means of an external electric field.
  • each dot element has at least three color mirrors which communicate with ink containers filled with different colors, in particular black, cyan, yellow and magenta.
  • the dot elements thus composed can assume the colors of the controlled ink containers in the image area. Since two or more ink containers of a dot element can also be controlled, the dot elements can also be the colors of color mixtures accept.
  • the color mirror of a point element can also be arranged one behind the other, provided that the respective upstream color mirror made of clear transparent material and are connected to filled with transparent color ink containers.
  • the paint containers are fed by micropumps, e.g. Piezo actuators, pressurized. These piezo actuators can be controlled via diode matrix.
  • the invention has for its object to improve the known devices so that a color change of the color mirror accelerates and the energy required for color and image change is significantly reduced.
  • a movable wall is arranged in the ink container as a pumping element, which divides the ink container into a paint chamber and a gas chamber, and that the color mirror is connected via a second channel to the gas chamber.
  • a screen is composed of several hundred thousand point elements or pixels 1.
  • Each dot element 1 has at least one visible from Fig. 1 color mirror 3, which consists of a flat container whose located on the visible side wall 2 is transparent and via a channel is connected to a paint container 5.
  • a micropump 7 the liquid color from the ink container 5 press in the color mirror 3 and can retrieve color from the color mirror 3.
  • a movable wall 30 is arranged as a pumping element, which divides the ink container 5 into a paint chamber 31 and a gas chamber 32.
  • the channel 6 is connected to the ink chamber 31 and opens at the left side in the flat container of the color mirror 3.
  • a channel 33 is arranged, which connects the color mirror 3 with the gas chamber 32. Presses the micropump 7, the wall 30 to the left, then the ink chamber 31 is smaller and the gas chamber 32 larger.
  • valves or sliders 8.34 are arranged, with the aid of the channels 6 and 33 can be opened or closed.
  • the state of the color mirror 3 can be fixed independently of the operating state of the micropump 7. In this way, still images can be fixed, so that the system can be turned off by a power supply.
  • the channels 6 and 33 are shown relatively long for a better overview. To reduce the energy to be expended when changing color, these channels 6 and 33 should be made as short as possible.
  • FIGS. 2 to 5 show four schematic diagrams of operating states of a color mirror 3 with a color container 5.
  • the movable wall 30 is in the initial position and the color mirror 3 is free of color.
  • the volume of the ink chamber 31 is dimensioned so that in the starting position, the color liquid is in the channel 6 to at the mouth of the channel 6 in the color mirror 3, so that immediately after activation of the micropump 7 color enters the color mirror 8.
  • the wall 30 presses color liquid from the ink chamber 31 in the color mirror 3.
  • gas is pressed from the color mirror 3 into the increasing gas chamber 32.
  • the color mirror 3 is completely filled with colored liquid.
  • FIG. 5 corresponds to the starting position shown in FIG. 2.
  • the micropump 7 is formed by a piezoactuator, which, when activated, pivots the movable wall 30 like a finger, thereby pressing on the paint liquid contained in the ink chamber 31.
  • the free end of the wall 30 must bear tightly against the upper wall of the paint container 5 with a sealing lip.
  • the movable wall 30 can operate against an elastic membrane which separates the paint chamber 31 from the gas chamber 32.
  • the maximum volume of the gas chamber 32 should also be the volume of the color mirror 3 and the maximum pumping volume.
  • the interior of the color mirror 3 is liquid-repellent, for example treated with the product sold under the brand name "Ombrello".
  • a dot element may also have three or more color levels arranged side by side or one above the other, each color mirror being connected via channels 6 and 33 to the color chambers 31 and gas chambers 32 of the own color container 5.
  • the channel 6 is widened in a funnel-like manner both at its confluence with the color mirror 3 and at its junction with the ink chamber 5 for the respective container.
  • the color liquid is up to the mouth of the channel 6 in the color mirror 3, so that no time is lost when filling the color mirror 3 with color.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Reciprocating Pumps (AREA)
  • Micromachines (AREA)

Claims (11)

  1. Dispositif pour créer des images et des textes pouvant être reconnus sous l'effet de la lumière incidente, dans lequel l'écran se compose de nombreux points (1) commandés électroniquement et disposés à la manière d'une trame, chaque point (1) présentant au moins une zone de coloration (3) formée par un réservoir transparent - au moins du côté plat visible - et dont l'intérieur est relié par un canal (6) à un réservoir de substance colorée (5) dont le contenu peut être mis sous pression par commande électronique de sorte que de la substance colorée parvienne dans la zone de coloration (3) depuis le réservoir de substance colorée (5) et que la substance colorée soit ramenée de la zone de coloration (3) au réservoir de substance colorée (5) par réduction de la pression dans le réservoir de substance colorée (5),
    caractérisé en ce qu'une cloison mobile (30) est disposée comme élément de pompage dans le réservoir de substance colorée (5) pour diviser le réservoir de substance colorée (5) en une chambre de substance colorée (31) et une chambre de gaz (32), et en ce que la zone de coloration (3) est reliée à la chambre de gaz (32) par un second canal (33).
  2. Dispositif selon la revendication 1, caractérisé en ce que le canal (6) reliant la chambre de substance colorée (31) à la zone de coloration (3) débouche dans la zone de coloration (3) sur un côté de la zone de coloration (3) et le canal (33) reliant la zone de coloration (3) à la chambre de gaz (32) part du côté opposé de la zone de coloration (3).
  3. Dispositif selon la revendication 1 ou la revendication 2, caractérisé en ce que des valves (8, 34) sont disposées respectivement dans le canal (6) reliant la chambre de substance colorée (31) à la zone de coloration (3) et dans le canal (33) reliant la zone de coloration (3) à la chambre de gaz (32) pour ouvrir ou obturer lesdits canaux (6, 33).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le volume de pompage maximum de la micro-pompe (7) correspond sensiblement au volume de la zone de coloration (3).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le volume maximum de la chambre de gaz (32) correspond au volume de pompage maximum de la micro-pompe (7).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que l'intérieur de la zone de coloration (3) est traité pour repousser les liquides afin de provoquer l'effet lotus.
  7. Dispositif selon la revendication 6, caractérisé en ce que l'intérieur de la chambre de substance colorée (31) est lui aussi traité pour repousser les liquides.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que la cloison mobile (30) qui sépare la chambre de substance colorée (31) de la chambre de gaz (32) est constituée d'une membrane flexible ou élastique.
  9. Dispositif selon la revendication 8, caractérisé en ce que le liquide coloré situé dans le réservoir de substance colorée (5) est entouré d'une membrane flexible.
  10. Dispositif selon la revendication 9, caractérisé en ce que la membrane enveloppante située dans la chambre de substance colorée (31) est composée d'une nappe de fibres de carbone, de type nanotube, et forme la micro-pompe.
  11. Dispositif selon l'une des revendications 1 à 10, caractérisé en ce que les embouchures du canal (6) dans la zone de coloration (3) et dans la chambre de substance colorée (31) s'élargissent en forme d'entonnoir.
EP03790891A 2002-08-09 2003-08-08 Dispositif pour creer des images et des textes pouvant etre reconnus sous l'effet de la lumiere incidente Expired - Lifetime EP1529274B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10237069 2002-08-09
DE2002137069 DE10237069A1 (de) 2002-08-09 2002-08-09 Vorrichtung zur Erstellung von durch auffallendes Licht erkennbaren Bildern und Texten
PCT/EP2003/008850 WO2004021318A1 (fr) 2002-08-09 2003-08-08 Dispositif pour creer des images et des textes pouvant etre reconnus sous l'effet de la lumiere incidente

Publications (2)

Publication Number Publication Date
EP1529274A1 EP1529274A1 (fr) 2005-05-11
EP1529274B1 true EP1529274B1 (fr) 2006-10-04

Family

ID=30469721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03790891A Expired - Lifetime EP1529274B1 (fr) 2002-08-09 2003-08-08 Dispositif pour creer des images et des textes pouvant etre reconnus sous l'effet de la lumiere incidente

Country Status (4)

Country Link
EP (1) EP1529274B1 (fr)
AU (1) AU2003251699A1 (fr)
DE (2) DE10237069A1 (fr)
WO (1) WO2004021318A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8331009B2 (en) 2005-05-21 2012-12-11 Aspre Ag Method for mixing colors in a display unit
US8693077B2 (en) 2009-11-09 2014-04-08 Aspre Ag Display

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006009541A1 (de) * 2006-02-28 2007-08-30 Aspre Ag Bildfläche oder Display

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04166981A (ja) * 1990-10-31 1992-06-12 Toshiba Corp ディスプレイ装置
US5717283A (en) * 1996-01-03 1998-02-10 Xerox Corporation Display sheet with a plurality of hourglass shaped capsules containing marking means responsive to external fields
EP1090384B1 (fr) * 1998-06-26 2002-04-17 Pirschel, Manfred Dispositif pour produire des images et des textes identifiables par lumiere incidente

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8331009B2 (en) 2005-05-21 2012-12-11 Aspre Ag Method for mixing colors in a display unit
US8693077B2 (en) 2009-11-09 2014-04-08 Aspre Ag Display

Also Published As

Publication number Publication date
EP1529274A1 (fr) 2005-05-11
WO2004021318A1 (fr) 2004-03-11
AU2003251699A1 (en) 2004-03-19
DE10237069A1 (de) 2004-02-19
DE50305286D1 (de) 2006-11-16

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