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公开(公告)号：DE69612404D1
公开(公告)日：2001-05-17
申请号：DE69612404
申请日：1996-01-03
Applicant: XEROX CORP
Inventor： SHERIDON NICHOLAS K , RICHLEY EDWARD A
Abstract: An improved electric paper which allows it to form an image from a light image rather than from an applied electric field. The prior art embodiment had a number of rotatable balls imbedded in a plastic substrate. Each ball had hemispheres that had different electrical characteristics, and were colored differently. Under the influence of an image in the form of an electrical field, the balls would selectively rotate to form a permanent visible image, whereupon the field could be removed. This invention has two conductive surfaces to provide a uniform electric field across the substrate (11), and then exposes the substrate (11) to light which selectively changes the electrical characteristics of one of the two hemispheres, resulting in the rotation of the selected balls (13) to form the image.
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32.发明专利
公开(公告)号：CA2320564A1
公开(公告)日：2001-05-12
申请号：CA2320564
申请日：2000-09-22
Applicant: XEROX CORP
Inventor： HOWARD MATTHEW E , RICHLEY EDWARD A
Abstract: The invention is an electric reusable paper sheet that uses a pattern o f conductive charge-retaining islands on the outward-facing side of the first of two thin layers used to encapsulate a Electric reusable paper substrate which interac t with conductive areas in the encapsulating sheet. The second encapsulating layer may also coated with a conductive material, or made of a conductive material, and may or may not be patterned. The Electric reusable paper substrate and two encapsulatin g layers comprise a sheet of Gyricon electric reusable paper on which images can be written and erased repeatedly. The patterned charge-retaining islands of the first encapsulating layer receive electric charges from an external charge-transfe r device. After the charge-transfer device is removed, the conductive, charge-retainin g islands hold electric charge, creating an electric field in the electric reusable paper sufficient to cause an image change.
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33.发明专利
公开(公告)号：CA2257757A1
公开(公告)日：1999-07-09
申请号：CA2257757
申请日：1999-01-04
Applicant: XEROX CORP
Inventor： RICHLEY EDWARD A
Abstract: A bichromal ball includes a first hemisphere. The first hemisphere includes a first pigment having a first color and a first polarity. The first pigment is added to a carrier fluid and polymer mixture during formation of the bichromal ball. A second hemisphere includes a second pigment having a second color and a second polarity. The second pigment is added to the carrier fluid and polymer mixture during formation of the bichromal ball. The carrier fluid and polymer mixture have a lower viscosity than the polymer alone. The carrier fluid is substantially removed after the first and second hemispheres are formed. The polymer is left along with the first and second pigments which form the bichromal ball. A diameter of the bichromal ball is reduced after the carrier fluid is substantially removed.
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公开(公告)号：DE60039486D1
公开(公告)日：2008-08-28
申请号：DE60039486
申请日：2000-10-25
Applicant: XEROX CORP
Inventor： SHERIDON NICHOLAS K , RICHLEY EDWARD A , MIKKELSEN JAMES
Abstract: A display media with an encapsulant medium, and bichromal beads having a crystalline material, wherein the bichromal beads are dispersed or contained in the encapsulant medium is set forth.
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公开(公告)号：DE60025417T2
公开(公告)日：2006-07-20
申请号：DE60025417
申请日：2000-07-14
Applicant: XEROX CORP
Inventor： RICHLEY EDWARD A
Abstract: An apparatus for fabricating bichromal elements comprising a separator member (14) having a central rotating point, the separator member (14) having first (34) and second (36) spaced apart, opposed surfaces with an edge region in contact with both of said opposed surfaces (34,36). The spacing between the opposed surfaces (34,36) varies with the distance outwardly from the central rotating point such that the spacing is the largest at the central rotating point and the spacing decreases outwards from the central rotating point and the spacing is a minimum at the edge region. Further each of the opposed surfaces (34,36) has a substantially annular cup (20) spaced apart from and substantially surrounding the central rotating point. The apparatus for fabricating bichromal elements also includes apparatus for dispensing first and second differently colored hardenable liquids in the cups (20) of the first and second surfaces, respectively, and an apparatus for substantially uniformly spreading the liquid material in the annular cups (20) located in the first (34) and second (36) surfaces and for substantially uniformly spreading the liquid material from the cups (20) over the first (34) and second (36) surfaces toward said edge region to form a reservoir of liquid material outboard of said edge region, and for forming ligaments from said reservoir.
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Patent Agency Ranking
公开(公告)号：DE69922314D1
公开(公告)日：2005-01-05
申请号：DE69922314
申请日：1999-09-14
Applicant: XEROX CORP
Inventor： RICHLEY EDWARD A , SILVERMAN ALEXANDER E , HOWARD MATTHEW E , PREAS BRYAN T
Abstract: A bistable display device (400) that is powered only by ambient energy. Ambient energy is collected by an ambient energy receiver (420) which converts the ambient energy into an operating signal and provides the operating signal to a controller (C). The controller (C) drives the display device based on the operating signal. A user can create a custom display by fixing customizable patterned electrodes to the display. A display controller uses a self-starting oscillator (530). The oscillator (530) outputs a clock input signal wave to a ripple counter (540) and a voltage signal to a voltage doubler (560). The voltage doubler (560) outputs a stored charge signal to a transformer (570) concurrently with a clock pulse that is output by the ripple counter (540) to change a state of the voltage output from the transformer to conductive electrodes within or on the display. The voltage output from the transformer (570) applies an electric field across the display in the portions of the display covered by the conductors to switch the image on the display. As the display is bistable, if the ambient energy receiver and controller are detached from the display or there is an insufficient amount of ambient energy, the image on the display will stop switching, but will not fade.
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公开(公告)号：DE69901265D1
公开(公告)日：2002-05-23
申请号：DE69901265
申请日：1999-01-04
Applicant: XEROX CORP
Inventor： RICHLEY EDWARD A
Abstract: A bichromal ball (12) includes a first hemisphere (14). The first hemisphere (14) includes a first pigment having a first color and a first polarity. The first pigment is added to the carrier fluid and polymer mixture during formation of the bichromal balls. A second hemisphere (16) includes a second pigment having a second color and a second polarity. The second pigment is added to the carrier fluid and polymer mixture during formation of the bichromal balls. The carrier fluid and polymer mixture have a lower viscosity than the polymer alone and so more easily form reasonably uniform small sized droplets (44). The carrier fluid is substantially removed from the droplets (44) after the first and second hemispheres (14,16) are formed. The polymer is left along with the first and second pigments which form the bichromal ball (12). A diameter of the bichromal ball is reduced by the substantially removing the carrier fluid.
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公开(公告)号：DE69801258T2
公开(公告)日：2002-01-31
申请号：DE69801258
申请日：1998-01-29
Applicant: XEROX CORP
Inventor： RICHLEY EDWARD A
Abstract: A twisting ball display sheet is disclosed which utilizes a mechanism other than Zeta potential to create dipole moment to rotate a plurality of bichromal balls. The twisting ball display sheet comprises a transparent sheet (52) which contains a plurality of bichromal balls (40). Each bichromal ball (40) comprises two hemisphere (w3 and b3). Each hemisphere has a material which has a different work function than the work function of the other hemisphere. The two different work functions of each bichromal ball create a dipole moment which at the presence of a proper electric filed will cause the bichromal ball to rotate.
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公开(公告)号：DE69801258D1
公开(公告)日：2001-09-06
申请号：DE69801258
申请日：1998-01-29
Applicant: XEROX CORP
Inventor： RICHLEY EDWARD A
Abstract: A twisting ball display sheet is disclosed which utilizes a mechanism other than Zeta potential to create dipole moment to rotate a plurality of bichromal balls. The twisting ball display sheet comprises a transparent sheet (52) which contains a plurality of bichromal balls (40). Each bichromal ball (40) comprises two hemisphere (w3 and b3). Each hemisphere has a material which has a different work function than the work function of the other hemisphere. The two different work functions of each bichromal ball create a dipole moment which at the presence of a proper electric filed will cause the bichromal ball to rotate.
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公开(公告)号：CA2282124A1
公开(公告)日：2000-03-15
申请号：CA2282124
申请日：1999-09-13
Applicant: XEROX CORP
Inventor： PREAS BRYAN T , SILVERMAN ALEXANDER E , RICHLEY EDWARD A , HOWARD MATTHEW E
Abstract: A bistable display device that is powered only by ambient energy. Ambient energy is collected by an ambient energy receiver which converts the ambient energy into an operating signal and provides the operating signal to a controller. The controller drives the display device based on the operating signal. A user can create a custom display by fixing customizable patterned electrodes to the display. A display controller uses a self-starting oscillator. The oscillator outputs a clock input signal wave to a ripple counter and a voltage signal to a voltage doubler. The voltage doubler outputs a stored charge signal to a transformer concurrently with a clock pulse that is output by the ripple counter to change a state of the voltage output from the transformer to conductive electrodes within or on the display. The voltage output from the transformer applies an electric field across the display in the portions of the display covered by the conductors to switch the image on the display. As the display is bistable, if the ambient energy receiver and controller are detached from the display or there is as insufficient amount of ambient energy, the image on the display will stop switching, but will not fade.
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