Patents by Inventor Takeshi Shibuya
Takeshi Shibuya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20090256157Abstract: A display device includes a first substrate on which a semiconductor circuit is formed. A second substrate is disposed over the first substrate to include a first electrode formed on a first surface to perform image displaying, and a second electrode exposed to a second surface and bonded to the first electrode via a contact hole. A third substrate is disposed over the second substrate to include a third electrode formed to perform image displaying in association with the first electrode of the second substrate. An image displaying layer is disposed between the second substrate and the third substrate to perform image displaying. An electrode on a surface of the first substrate on which the semiconductor circuit is formed is electrically connected to the second electrode exposed to the second surface of the second substrate.Type: ApplicationFiled: April 7, 2009Publication date: October 15, 2009Applicant: RICOH COMPANY, LTD.Inventors: Hiroshi KONDO, Tohru Yashiro, Yuki Nakamura, Takeshi Shibuya, Shigenobu Hirano, Yukiko Abe
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Publication number: 20090234783Abstract: Reinforcement learning is one of the intellectual operations applied to autonomously moving robots etc. It is a system having excellent sides, for example, enabling operation in unknown environments. However, it has the basic problem called the “incomplete perception problem”. A variety of solution has been proposed, but none has been decisive. The systems also become complex. A simple and effective method of solution has been desired. A complex value function defining a state-action value by a complex number is introduced. Time series information is introduced into a phase part of the complex number value. Due to this, the time series information is introduced into the value function without using a complex algorithm, so the incomplete perception problem is effectively solved by simple loading of the method.Type: ApplicationFiled: August 18, 2006Publication date: September 17, 2009Applicant: National University Corporation Yokohama National UniversityInventors: Tomoki Hamagami, Takeshi Shibuya
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Publication number: 20090231663Abstract: An electrochromic compound having in the molecule at least an adsorbable group, a redox chromophore and a spacer portion, and represented by the following General Formula (1): wherein A represents the adsorbable group, C represents the redox chromophore, and X represents the spacer portion represented by the following formula; wherein R1 and R3 each represent an aliphatic hydrocarbon group or an aromatic derivative group, R2 represents a hydrogen atom or a monovalent group.Type: ApplicationFiled: March 10, 2009Publication date: September 17, 2009Inventors: Shigenobu HIRANO, Takeshi Shibuya, Hiroshi Kondo, Yuki Nakamura, Yukiko Abe, Tohru Yashiro
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Publication number: 20090231664Abstract: An electrochromic compound represented by the following General Formula (1). A-(CX2)n—B ??General Formula (1) In the formula, A is a monovalent binding group, B is a redox chromophore, X is a halogen atom, and n is an integer of 1 or more.Type: ApplicationFiled: March 10, 2009Publication date: September 17, 2009Inventors: Takeshi SHIBUYA, Shigenobu Hirano, Hiroshi Kondo, Yuki Nakamura, Yukiko Abe, Tohru Yashiro
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Publication number: 20090225151Abstract: A disclosed image forming apparatus includes a laser array light source having plural laser light sources for generating plural laser beams; a photosensitive body having a surface on which an electrostatic latent image is formed by a surface potential changed by the plural laser beams emitted from the laser array light source; and a controller for controlling emission of the plural laser beams of the laser array light source. The controller sequentially turns off at least one of the plural laser beams when forming a continuous electrostatic latent image line on the photosensitive body by scanning the plural laser beams in a main scanning direction of the photosensitive body.Type: ApplicationFiled: February 25, 2009Publication date: September 10, 2009Inventor: Takeshi SHIBUYA
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Publication number: 20090220264Abstract: An electrophotography apparatus prevents the edge effect without causing the blurring or loss of a single-dot image or a single-dot-width line. Based on a measurement of a testing patch, two templates with different sizes are generated. Image data to be printed is subjected to template matching using the templates to obtain a difference region as an image edge region of the image data where, when the image data is developed, the amount of attached toner is increased. The exposure amount for the image edge region is controlled based on a measurement of the amounts of attached toner in edge portions of the testing patch so that the difference in the attached toner amounts are minimized.Type: ApplicationFiled: March 2, 2009Publication date: September 3, 2009Inventors: Shinya Kobayashi, Takeshi Shibuya
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Patent number: 7570412Abstract: A reversible recording material is disclosed. The reversible recording material includes one or more kinds of compounds having a structure shown in Chemical Formula (1) on a surface of metal oxide particles. In Chemical Formula (1), X shows a linkage including an element selected from Si, Ti, and Al; Y shows a linkage including a structure selected from Chemical Formula (2); Z shows a methylene group or a sulfide group capable of having a substituent group; Ar shows an aromatic group capable of having a substituent group; R1 and R2 show corresponding alkylene groups; R3 shows an alkylene group capable of forming a ring structure linked with —N—C—O— and able to have a substituent group; and “n” is an integer which is 1 or more.Type: GrantFiled: November 6, 2007Date of Patent: August 4, 2009Assignee: Ricoh Company, Ltd.Inventors: Takeshi Shibuya, Shigenobu Hirano
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Publication number: 20090162247Abstract: Disclosed herein is a sample-processing system that can improve total system processing efficiency, and reduce a sample-processing time, by establishing a functionally independent relationship between a rack conveyance block with rack supply, conveyance, and recovery functions, and a processing block with sample preprocessing, analysis, and other functions. A buffer unit with random accessibility to multiple racks standing by for processing is combined with each of multiple processing units to form a pair, and the system is constructed to load and unload racks into and from the buffer unit through the rack conveyance block so that one unprocessed rack is loaded into the buffer unit and then upon completion of process steps up to automatic retesting, unloaded from the buffer unit. Functional dependence between any processing unit and a conveyance unit is thus eliminated.Type: ApplicationFiled: December 23, 2008Publication date: June 25, 2009Inventors: Hitoshi TOKIEDA, Yoshimitsu TAKAGI, Takeshi Shibuya, Masashi Akutsu
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Patent number: 7525716Abstract: To provide a display device which includes: a display electrode; a counter electrode provided to face the display electrode; a display layer provided on the counter electrode-side surface of the display electrode; and an electrolyte provided between the display electrode and the counter electrode, wherein the display layer comprises conductive or semi-conductive fine particles, the fine particles comprise an insulating or semi-conductive substance attached to the surface thereof, and the fine particles carry an organic electrochromic compound.Type: GrantFiled: March 3, 2006Date of Patent: April 28, 2009Assignee: Ricoh Company, Ltd.Inventors: Shigenobu Hirano, Hiroyuki Takahashi, Ikue Kawashima, Takeshi Shibuya
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Patent number: 7489432Abstract: To provide an electrochromic display device which includes a display electrode formed of a substrate having a transparent conductive film; a counter electrode formed of a substrate having a transparent conductive film; and a metal oxide layer which contains a metal oxide and is disposed on the display electrode, the metal oxide layer having an organic electrochromic compound attached, wherein the metal oxide is a long fibrous metal oxide.Type: GrantFiled: March 21, 2006Date of Patent: February 10, 2009Assignee: Ricoh Company, Ltd.Inventors: Takeshi Shibuya, Shigenobu Hirano, Satoshi Uchida, Yoshitaka Sanehira
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Publication number: 20090002802Abstract: The present invention provides an organic-inorganic composite material containing a metal oxide, and a functional organic material located on the metal oxide, wherein the functional organic material and the metal oxide are bound via a silanol bond. An aspect that the silanol bond is formed by reacting a silane coupling agent with the metal oxide, and an aspect that the silane coupling agent has a reactive terminal are preferred. The present invention also provides a display electrode for electrochromic display device and electrode for photoelectric conversion device using the organic-inorganic composite material, an electrochromic display device using the display electrode and a photoelectric conversion device using the electrode.Type: ApplicationFiled: September 4, 2008Publication date: January 1, 2009Applicant: RICOH COMPANY, LTD.Inventors: Takeshi Shibuya, Shigenobu Hirano
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Publication number: 20080291478Abstract: A color conversion method including the steps of a) generating output values corresponding to a body-center of each cubic lattice block included in a three-dimensional input space, and interpolating between the output values generated in step a) and the LUT values. The cubic lattice block is divided into six quadrangular pyramids. Each of the quadrangular pyramids is divided into two tetrahedron blocks by a side parallel to a predetermined straight line and by a plane including a diagonal line of a bottom plane that intersects the side parallel to the predetermined axis. Corrected output values are determined by performing linear interpolation on output values corresponding to body-center points of each of the tetrahedron blocks and using LUT values corresponding to three lattice points of each of the tetrahedron blocks and three correction coefficients based on a positional relationship of input color signals inside each of the tetrahedron blocks.Type: ApplicationFiled: May 27, 2008Publication date: November 27, 2008Inventors: Takeshi SHIBUYA, Teruyoshi YAMAMOTO, Nobuyuki SATO
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Publication number: 20080112033Abstract: A reversible recording material is disclosed. The reversible recording material includes one or more kinds of compounds having a structure shown in Chemical Formula (1) on a surface of metal oxide particles. In Chemical Formula (1), X shows a linkage including an element selected from Si, Ti, and Al; Y shows a linkage including a structure selected from Chemical Formula (2); Z shows a methylene group or a sulfide group capable of having a substituent group; Ar shows an aromatic group capable of having a substituent group; R1 and R2 show corresponding alkylene groups; R3 shows an alkylene group capable of forming a ring structure linked with —N—C—O— and able to have a substituent group; and “n” is an integer which is 1 or more.Type: ApplicationFiled: November 6, 2007Publication date: May 15, 2008Inventors: Takeshi Shibuya, Shigenobu Hirano
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Patent number: 7333259Abstract: Multicolor display elements are disclosed that are adapted to full color electric papers, which comprises a display electrode, counter electrode, electrolyte, and display layer, wherein the counter electrode is disposed oppositely to the display electrode, the electrolyte is filled into a space provided between the display electrode and the counter electrode, the display layer is disposed on the surface, which faces the counter electrode, of the display electrode, the display layer contains plural electrochromic compositions in a condition that the plural electrochromic compositions are separated into plural layers within the display layer or are mixed together within the display layer, and at least one of threshold voltage for coloring condition and threshold voltage for decoloring condition, or at least one of charge amount required for coloring into a sufficient color density and charge amount required for sufficiently decoloring, are substantially different each other between the plural electrochromic comType: GrantFiled: October 2, 2006Date of Patent: February 19, 2008Assignee: Ricoh Company, Ltd.Inventors: Shigenobu Hirano, Takuji Kato, Hiroyuki Takahashi, Ikue Kawashima, Takeshi Shibuya
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Publication number: 20080013152Abstract: Multicolor display elements are disclosed that are adapted to full color electric papers, which comprises a display electrode, counter electrode, electrolyte, and display layer, wherein the counter electrode is disposed oppositely to the display electrode, the electrolyte is filled into a space provided between the display electrode and the counter electrode, the display layer is disposed on the surface, which faces the counter electrode, of the display electrode, the display layer contains plural electrochromic compositions in a condition that the plural electrochromic compositions are separated into plural layers within the display layer or are mixed together within the display layer, and at least one of threshold voltage for coloring condition and threshold voltage for decoloring condition, or at least one of charge amount required for coloring into a sufficient color density and charge amount required for sufficiently decoloring, are substantially different each other between the plural electrochromic comType: ApplicationFiled: September 17, 2007Publication date: January 17, 2008Inventors: Shigenobu Hirano, Takuji Kato, Hiroyuki Takahashi, Ikue Kawashima, Takeshi Shibuya
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Publication number: 20070046999Abstract: A halftoning device that converts an input pixel signal of 8 bits per pixel into an output pixel signal of r bits per pixel(r<8), the halftoning device includes: a gradation correction unit that expands the input pixel signal into an expanded pixel signal of n bits per pixel(n>8); a threshold value array storage that stores a threshold value array having a threshold value of 8 bits; and a threshold value expansion unit that expands the threshold value of 8 bits to expanded threshold value of n bits per pixel. A range of the expanded pixel signal output from the gradation correction unit is matched with a range of the expanded threshold value. The output pixel signal is set according to a comparison of the expanded pixel signal with the expanded threshold value corresponding to the threshold value that is selected for each input pixel signal.Type: ApplicationFiled: August 22, 2006Publication date: March 1, 2007Applicant: RICOH PRINTING SYSTEMS, LTD.Inventors: Takeshi Shibuya, Nobuyuki Sato, Naoyuki Urata, Shiro Kofuji
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Publication number: 20070024948Abstract: Multicolor display elements are disclosed that are adapted to full color electric papers, which comprises a display electrode, counter electrode, electrolyte, and display layer, wherein the counter electrode is disposed oppositely to the display electrode, the electrolyte is filled into a space provided between the display electrode and the counter electrode, the display layer is disposed on the surface, which faces the counter electrode, of the display electrode, the display layer contains plural electrochromic compositions in a condition that the plural electrochromic compositions are separated into plural layers within the display layer or are mixed together within the display layer, and at least one of threshold voltage for coloring condition and threshold voltage for decoloring condition, or at least one of charge amount required for coloring into a sufficient color density and charge amount required for sufficiently decoloring, are substantially different each other between the plural electrochromic comType: ApplicationFiled: October 2, 2006Publication date: February 1, 2007Inventors: Shigenobu Hirano, Takuji Kato, Hiroyuki Takahashi, Ikue Kawashima, Takeshi Shibuya
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Patent number: 7130076Abstract: In an image output device a test chart 18 including tests charts 6 of each color is used, and a tone correction table is calculated. The test charts 6 are patterned in a checkered pattern, each including continuous areas 10 in which the tones increase in steps and reference areas 11 for comparison with the continuous areas 10. The reference areas 11 are formed of white ground of paper in a highlight proof part 7, a solid pattern with a maximum density in a shadow proof part 8, and halftone dot-concentrated or line screens with a lower resolution than in the continuous areas in a middle proof part 9. Tone correction values are calculated from characteristic values of the highlight, shadow and middle parts, obtained from visual data of the test chart 18.Type: GrantFiled: July 25, 2001Date of Patent: October 31, 2006Assignee: Ricoh Printing Systems, Ltd.Inventors: Takeshi Shibuya, Yukio Yamamoto, Naoyuki Urata, Toshiyuki Yamada, Natsuhiko Hirayama
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Publication number: 20060215250Abstract: To provide an electrochromic display device which includes a display electrode formed of a substrate having a transparent conductive film; a counter electrode formed of a substrate having a transparent conductive film; and a metal oxide layer which contains a metal oxide and is disposed on the display electrode, the metal oxide layer having an organic electrochromic compound attached, wherein the metal oxide is a long fibrous metal oxide.Type: ApplicationFiled: March 21, 2006Publication date: September 28, 2006Inventors: Takeshi Shibuya, Shigenobu Hirano, Satoshi Uchida, Yoshitaka Sanehira
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Publication number: 20060204866Abstract: To provide a display device which includes: a display electrode; a counter electrode provided to face the display electrode; a display layer provided on the counter electrode-side surface of the display electrode; and an electrolyte provided between the display electrode and the counter electrode, wherein the display layer comprises conductive or semi-conductive fine particles, the fine particles comprise an insulating or semi-conductive substance attached to the surface thereof, and the fine particles carry an organic electrochromic compound.Type: ApplicationFiled: March 3, 2006Publication date: September 14, 2006Inventors: Shigenobu Hirano, Hiroyuki Takahashi, Ikue Kawashima, Takeshi Shibuya