Fuji Xerox Co., Ltd.

Kiyoshi Shigehiro

Yoshinori Machida

Yoshiro Yamaguchi

Takeshi Matsunaga

Motohiko Sakamaki

Yasufumi Suwabe

Atsushi Hirano

Minoru Koshimizu

Takeo Kakinuma

Satoshi Tatsuura

Shota Oba

Masaaki Abe

Nobuyuki Nakayama

Yasuo Yamamoto

Hiroaki Moriyama

Kazuo Terao

Tsutomu Ishii

Yasunori Saito

Haruo Harada

Hiroshi Arisawa

Ikutaroh Nagatsuka

Yasunari Nishikata

Tsunemasa Mita

Takashi Yamamuro

Daisuke Tsuda

Katsumi Nukada

Kenji Yao

Satoshi Hiraoka

Kiyokazu Mashimo

Yoshihiro Inaba

Ryojiro Akashi

Yoshinori Yamaguchi

Kazuhiko Arai

Chisato Urano

Hiroshi Miyamoto

Shunichiro Shishikura

Toru Teshigawara

Kazunaga Horiuchi

Hiroshi Kayashima

Kyoko Nishikawa

The present invention provides an image display medium comprising a pair of substrates at least one of which having translucency, the substrates being disposed opposite to each other with a gap, a dispersion medium which has translucency and is enclosed in a space between the pair of substrates; and plural kinds of particle groups which are movably dispersed in the dispersion medium, move according to an electric field formed, and have different colors and forces for separation from the substrates.

Image displaying medium, image display device, writing device and displaying method

An image display medium comprises a display member, a back substrate, spacers having a cell structure held between the substrates, and first particles and second particles, whose colors and charging polarities are different from one another, enclosed between the display member and back substrate. The display member includes a transparent support base, a transparent electrode formed thereon, a transparent dielectric layer formed on the transparent electrode, filters formed on the opposite side from the transparent electrodes side of the support base, and a protective layer formed thereon.

Image display medium, image display device, and image display method

An image display medium including a pair of substrates, a transparent dispersion medium, one or more kind of colored particles and larger sized colored particles. The pair of substrates is disposed with a separation therebetween and at least one of the pair of substrates is transparent. The dispersion medium is transparent and enclosed between the pair of substrates. Each kind of the colored particles is colored a predetermined color, is dispersed in the dispersion medium, has predetermined charge characteristics or predetermined magnetic properties, and is able to migrate between the pair of substrates. The larger sized colored particles have a different color and a larger particle size than the colored particles, are disposed so that the colored particles are able to pass through the separation, have charge characteristics or magnetic properties which are different from those of the colored particles, and are able to move.

Image display medium and image display device

There is provided an image display medium that includes: a pair of substrates at least one of that is light-transmissive; a liquid enclosed between the substrates; and three or more types of colored particles dispersed in the liquid that move in accordance with electric fields applied between the substrates and have different colors and charge characteristics, wherein at least one type of the colored particles has an opposite polarity from at least one other type of colored particles.

Image display medium, image display device, storage medium storing an image display program, and image display method

There is provided a driving device for an image display medium that drives the image display medium including: a display substrate; a back surface substrate; plural first electrodes; plural second electrodes; and particles enclosed between the display substrate and the back surface substrate so as to move according to an electric field generated between the substrates by applying a voltage corresponding to an image between the first and second electrodes; the driving device including: a voltage application section that applies the voltage corresponding to an image between the first and second electrodes, the voltage application section, as a display drive voltage to be applied for each pixel to display a desired color at each pixel, applying a first pulse voltage that can cause the particles in a stationary state to start moving and thereafter applying a second pulse voltage that can cause the particles that have started moving to move.

Driving device for image display medium

A display medium is provided. The display medium includes a pair of electrodes disposed so as to have a gap therebetween, an electrolyte disposed between the pair of electrodes, an electroconductive porous layer disposed at least one of the pair of electrodes at the side facing the other electrode, a first electrochromic dye held by the porous layer, a second electrochromic dye dispersed in the electrolyte and forming a color different from the color of the first electrochromic dye. Both the first electrochromic dye and the second electrochromic dye are oxidation dyes which form colors by an electrochemical oxidation reaction and are rendered color-faded by an electrochemical reduction reaction, or reduction dyes which form colors by an electrochemical reduction reaction and are rendered color-faded by an electrochemical reduction reaction. The threshold values of voltages applied to the pair of the electrodes for changing from a color-faded state to a colored state of the first electrochromic dye and the second electrochromic dye satisfy a specific relationship.

Display medium and display device

An image processing device is provided for processing image data in order to display an image at an image display medium which is capable of displaying white, black, and colors at individual pixels, which are structured by pluralities of sub-pixels. The judgment component acquires the image data and judges whether there is a chromatic color or a non-chromatic color at each pixel. When a pixel is judged to be non-chromatic, the selection component selects a pre-specified black-and-white sub-pixel set in accordance with a gray level of the non-chromatic color. When a pixel is judged to be chromatic, the conversion component converts color data to a sub-pixel set of black and the color in accordance with a pre-specified condition. Of results of conversion, the replacement component replaces a pre-specified sub-pixel set of colors, in an individual pixel or in a pre-specified sub-pixel group, with a pre-specified black-and-white sub-pixel set.

Image processing device and image processing method which are capable of displaying white, black and a color other than white and black at each pixel

An image display device is provided. The image display device has: an image display medium where charged particle groups are sealed between a pair of substrates at least one of which has translucency and which are opposed to each other with a space therebetween, and display density is changed by transfer of the charged particle groups between the pair of substrates according to an electric field formed by a voltage applied between the substrates; a temperature measuring unit that measures a temperature of the image display medium; a voltage applying unit that applies, between the substrates, a driving voltage according to the temperature of the image display medium measured by the temperature measuring unit, based on a predetermined voltage applying condition corresponding to the temperature of the image display medium, in order to display an image with predetermined display density on the image display medium.

Image display device that can suppress a reduction in display density due to changes in the charge amount of charged particles

A medium writing apparatus obtains information to be written onto a recording medium, converts the information into a suitable writable format, and then writes the converted information onto the recording medium. An ID obtaining section obtains a medium ID from the recording medium, or through an input by the user. The medium ID and information indicating the place of the written information are sent to a server, and then stored as index information correlating them with each other. When the information written onto the recording medium is to be used at a later timing, the medium ID is identified, and the index information is obtained from the server. Therefore, the original information can be obtained so as to be easily reprocessed or reused.

System for writing information and method of writing information

An image display medium includes a pair of substrates, a liquid that is enclosed between the substrates, first colored particles, second colored particles and third colored particles. The first colored particles are colored a first color and move in response to an electric field that is formed between the substrates. The second colored particles are colored a second color and move in an opposite direction of the first colored particles. The third colored particles are colored a third color, are configured to have a particle diameter such that the third colored particles move through clearances between the first colored particles and the second colored particles in a state in which the first colored particles and the second colored particles have aggregated together, and move in response to an electric field that is formed between the substrates.

The present invention provides an image display device capable of freely changing a scanning direction of an image display medium including support plates, first and second electrode groups provided at the plates and colored particles provided between the plates, including first and second electrode-driving components which receive electrode-designation signals and apply voltages to the designated electrodes in the first and second electrode groups, and which can apply voltage to plural electrodes simultaneously, a line-image-data generation component which generates line-image-data for line images to be displayed along scan electrodes in accordance with a scanning direction, and a signal-output-destination-switching component, in accordance with the scanning direction, which outputs a first electrode designation signal for designating a scan electrode of a line image and a second electrode designation signal for designating an electrode to be driven for displaying the line image, to the first electrode driving component or the second electrode driving component.

Image display device

An image display device and image display method are provided. The device and method can prevent changes in image density and contrast, which are caused by repeated displaying over long periods of time and changes in environment, by employing accurate electric current detection, due to the following operations. Voltage measurement is initiated with a detection circuit. Next, the application of drive voltage is initiated with a drive power source. An electric current value is calculated from the measured voltage value and the electric current value is temporarily stored. The electric current values are stored every set amount of time and the storage thereof accumulates. Application of the drive voltage is terminated and the integral value of the electric current is calculated in accordance with formulas.

Image display device and method

In an image display apparatus and image display method suppress the degradation of display function and the shortening of service life due to long-term use, measurement of a current value is carried out and the measured current value each time a certain time elapses is stored. The integrated value of the current is calculated, and a comparator compares the integrated value with a reference value stored in a storage section for determining whether or not the result is greater than a prescribed value. If the result is affirmed to differ by prescribed value, a recovery voltage is applied, and it is determined whether or not a recovery time has exceeded a stored recovery time. If the excedance of the recovery time is affirmed, the application of the recovery voltage is terminated. If a negation is given at the determination of the greater difference value, the flow is ended. If a negation is given at the determination of the recovery time, the recovery voltage is applied.

Image display apparatus and image display method

A display medium includes at least: a pair of substrates, at least one of the substrates having optical transparency; a dispersion medium positioned in a gap between the pair of substrates; one or more kinds of electrophoretic particles or two or more kinds of electrophoretic particles different in color from each other, included in the dispersion medium; and a holder disposed between the pair of substrates, the holder having a function of holding the electrophoretic particles and a function of controlling, by an external voltage, a movement amount of the electrophoretic particles on the holder.

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Ashigarakami-gun, Japan

Kiyoshi Shigehiro