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Tokunaga, Kanagawa

Atsuo Tokunaga, Kanagawa JP

Patent application numberDescriptionPublished
20090134316Optical device, image reading device, and filter manufacturing method - A light emitting element has spectral characteristics in a predetermined optical wavelength range. A photodetecting unit includes a photodetecting element capable of detecting a light in the optical wavelength range and performs an OE conversion of either one of a reflected light and transmitted light from a scanning target. A filter unit is arranged in an optical path from the light emitting element to the photodetecting element via the scanning target and having an optical transmission range within the optical wavelength range and covering a range of variation in the optical wavelength range.05-28-2009
20100327515Roll-Sheet Feeding Device And Image Forming Apparatus - A roll-sheet feeding device having a roll sheet wound in a roll to feed a portion of the roll sheet to an image forming unit, includes a progressive mechanism to transmit a drive force from a drive source to transfer the portion of the roll sheet from the roll in a progressive direction, a roll-sheet drive mechanism to receive the drive force transmitted via the portion of the roll sheet transferred in the progressive direction, a rewinding mechanism to transfer the portion of the roll sheet in a direction opposite to the progressive direction via the roll-sheet drive mechanism to rewind the roll sheet, and a regenerating mechanism to obtain the drive force from the roll-sheet drive mechanism and transmit the obtained drive force to the progressive mechanism to regenerate the transmitted drive force as another drive force in addition to the drive force from the drive source.12-30-2010

Patent applications by Atsuo Tokunaga, Kanagawa JP

Kazuhiko Tokunaga, Kanagawa JP

Patent application numberDescriptionPublished
20100065844THIN FILM TRANSISTOR AND METHOD OF MANUFACTURING THIN FILM TRANSISTOR - The present invention provides a thin film transistor including: a channel layer mainly containing a conductive oxide semiconductor; a pair of electrodes on the channel layer; and a protective film covering an exposed surface of the channel layer, exposed to the gap between the pair of electrodes. The protective film includes at least an oxygen transmission film in contact with the channel layer, and an oxygen disturbance film hardly transmitting oxygen in comparison with the oxygen transmission film, in this order from the channel layer side. A length of the oxygen disturbance film in a direction where the pair of electrodes face each other is equal to or larger than a value obtained by multiplying a width of the pair of electrodes in a direction orthogonal to the direction where the pair of electrodes face each other by 0.55.03-18-2010
20100123131THIN FILM TRANSISTOR AND DISPLAY DEVICE - The present invention provides a thin film transistor realizing improved reliability by suppressing deterioration in electric characteristics. The thin film transistor includes an oxide semiconductor film forming a channel; a gate electrode disposed on one side of the oxide semiconductor film via a gate insulating film; and a pair of electrodes formed as a source electrode and a drain electrode in contact with the oxide semiconductor film and obtained by stacking at least first and second metal layers in order from the side of the oxide semiconductor film The first metal layer is made of a metal having ionization energy equal to or higher than molybdenum (Mo), a metal having oxygen barrier property, or a nitride or a silicon nitride of the metal having oxygen barrier property.05-20-2010
20100133525THIN FILM TRANSISTOR, DISPLAY UNIT, AND METHOD OF MANUFACTURING THIN FILM TRANSISTOR - A thin film transistor includes: a gate electrode; a gate insulting film formed on the gate electrode; an oxide semiconductor thin film layer forming a channel region corresponding to the gate electrode on the gate insulating film; a channel protective layer that is formed at least in a region corresponding to the channel region on the gate insulating film and the oxide semiconductor thin film layer, and that includes a first channel protective layer on a lower layer side and a second channel protective layer on an upper layer side; and a source/drain electrode that is formed on the channel protective layer and is electrically connected to the oxide semiconductor thin film layer. The first channel protective layer is made of an oxide insulating material, and one or both of the first channel protective layer and the second channel protective layer is made of a low oxygen permeable material.06-03-2010
20100200843THIN FILM TRANSISTOR AND DISPLAY UNIT - A thin film transistor with which oxygen is easily supplied to an oxide semiconductor layer and favorable transistor characteristics are able to be restored and a display unit including the same are provided. The thin film transistor includes sequentially over a substrate a gate electrode, a gate insulting film, an oxide semiconductor layer including a channel region, and a channel protective layer covering the channel region A source electrode and a drain electrode are formed on the oxide semiconductor layer located on both sides of the channel protective layer, and at least one of the source electrode and the drain electrode has an aperture to expose the oxide semiconductor layer.08-12-2010
20120043548THIN FILM TRANSISTOR AND DISPLAY UNIT - A thin film transistor with which oxygen is easily supplied to an oxide semiconductor layer and favorable transistor characteristics are able to be restored and a display unit including the same. The thin film transistor includes, sequentially over a substrate, a gate electrode, a gate insulting film, an oxide semiconductor layer including a channel region, and a channel protective layer covering the channel region A source electrode and a drain electrode are formed on the oxide semiconductor layer located on both sides of the channel protective layer, and at least one of the source electrode and the drain electrode has an aperture to expose the oxide semiconductor layer.02-23-2012

Kouki Tokunaga, Kanagawa JP

Patent application numberDescriptionPublished
20100107024Semiconductor device having plural clock domains which receive scan clock in common - A semiconductor device, includes a plurality of scan chains for testing a plurality of clock domains whose operating frequencies are different from one another, each of the plurality of scan chains including a plurality of flip-flop circuits, a clock oscillator which generates a plurality of clock signals corresponding to respective operating frequencies that are used to test the plurality of clock domains, a scan clock signal input circuit which receives, from an outside, and a scan clock signal that is supplied to the plurality of scan chains. The semiconductor device further includes a pulse generation circuit unit which generates a clock pulse signal used for the testing based on the clock signal and the scan clock signal, the pulse generation circuit unit including a plurality of pulse generation circuits corresponding to respective operating frequencies, a clock control circuit unit which selectively activates a part of the pulse generation circuit in the pulse generation circuit unit, the clock control circuit including a plurality of logic circuits corresponding to the plurality of scan chains, respectively, and a clock control signal generation unit which generates a clock control signal to control the clock control circuit unit, based on the scan clock signal.04-29-2010

Masaaki Tokunaga, Kanagawa JP

Patent application numberDescriptionPublished
20100232851DEVELOPER CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A developer-conveying apparatus is provided, the developer-conveying apparatus including: a conveying member that has a rotational axis rotatably set in a container and a blade formed around the rotational axis, the conveying member conveying a developer along the rotational axis by rotation; and a static eliminating member set in the container and eliminating static electricity of the developer in the container by being brought into contact with the developer.09-16-2010
20120082495CLEANING UNIT, IMAGE CARRIER UNIT, AND IMAGE FORMING APPARATUS - A cleaning unit includes: a cleaning member that cleans the surface of the image carrier; a cleaning container that stores developer removed by the cleaning member; a cleaning support that is formed by bending a plate and includes a cleaning-supporting portion supporting the other end portion of the cleaning member and a supported portion angled with respect to the cleaning-supporting portion by bending; a supporting-portion-of-support that includes a facing portion facing the supported portion, is provided at the cleaning container, and supports the cleaning support; a damping member that is disposed between the supported portion and the facing portion, is formed so as to be elastically deformable, and regulates vibration of the cleaning member; and a securing member that secures the cleaning support to the supporting-portion-of-support at a position adjacent to the damping member.04-05-2012
20120114360SENSOR MEMBER AND IMAGE FORMING APPARATUS - An image forming apparatus includes a sensor member having first and second ends opposite to each other in a longitudinal direction of the sensor member and supported by support structures consisting of the first and second ends, and first and second support portions supporting the first and second ends; a first support structure including a first protruding portion fitted on a first recess portion supporting the first protruding portion; and a second support structure including a second protruding portion fitted on a second recess portion supporting the second protruding portion. The second protruding portion has first and second cylinder portions extending in a longitudinal direction of the second protruding portion. The second recess portion has an insertion portion allowing the second protruding portion to be inserted, a pass portion allowing the first cylinder portion to pass therethrough, and a positioning portion fitted on the second cylinder portion.05-10-2012
20120114367DEVELOPER COLLECTING DEVICE AND IMAGE FORMING APPARATUS - A developer collecting device includes a housing provided with an opening opposed to a developer carrying member, a collecting member provided along an edge of the opening at a downstream end of the opening in a transporting direction in which the developer carrying member transports the developer, a sealing member provided along an edge of the opening at an upstream end of the opening in the transporting direction, a suction path that extends along a longitudinal direction of the housing and that is connected to a suction unit for sucking the developer into the housing, a developer transporting unit that is provided between the opening and the suction path and that transports the developer collected in the housing, a filter member disposed between the developer transporting unit and the suction path, and a hood member disposed between the opening and the filter member and separated from the filter member.05-10-2012
20120114369IMAGE FORMING APPARATUS - An image forming apparatus includes a transfer member that retains developer; a housing provided with a removing member that removes the developer and having an intake opening that is opposed to the transfer member, the developer removed by the removing member being taken into the housing through the intake opening; a guiding pipe connected to the housing and having a suction hole through which the developer is sucked and an outlet through which the developer is discharged; and a suction member that applies a suction force to an inner space of the housing through the guiding pipe. A capturing area for capturing the developer that flows through a flow channel from the suction hole to the outlet is provided in the flow channel. A cross section of the capturing area in a radial direction of the flow channel is larger than that of other areas.05-10-2012
20120114370DEVELOPER COLLECTING DEVICE AND IMAGE FORMING APPARATUS - A developer collecting device includes a housing provided with an opening opposed to a developer carrying member, a collecting member provided on a support member and capable of coming into contact with and separating from the developer carrying member, a suction path provided between the opening and a suction member for sucking developer removed from the developer carrying member, an opening-closing plate that opens or closes the suction path, an urging member that urges the opening-closing plate, a retaining member that retains the opening-closing plate, and an opening-closing unit including a rotating member and an elastic member whose ends are connected to the rotating member and the support member. The elastic member is pulled so as to rotate the rotating member in association with a movement of the collecting member, thereby rotating the opening-closing plate so as to open or close the suction path.05-10-2012
20120114387POWDER CONTAINER AND IMAGE FORMING APPARATUS - A powder container includes a containing portion having an opening; an opening/closing member that is movable between an open position and a closed position and supported with play; an opening restraining portion provided on the containing portion; an opening restrained portion provided on the opening/closing member; an urging member that urges the opening/closing member; and an opening/closing contact portion provided on the opening/closing member and contactable with an opening/closing contacted portion of an apparatus into which the containing portion is installed, wherein the opening restrained portion is disposed such that a direction of force generated when the containing portion is installed into the apparatus is inclined with respect to the direction in which the opening/closing member moves, and the opening restrained portion is disposed downstream of an imaginary line extending from a contact position at which the opening/closing contact portion contacts the opening/closing contacted portion.05-10-2012
20120114391POWDER CONTAINER AND IMAGE FORMING APPARATUS - A powder container includes a containing portion having an opening; an opening/closing member movable between an open position and a closed position; an opening restrained portion on one of the opening/closing member and the containing portion; an opening restraining portion on the other of the opening/closing member and the containing portion at a position corresponding to the opening restrained portion when the opening/closing member is at the closed position, the opening restraining portion restraining movement of the opening/closing member toward the open position by contacting the opening restrained portion; an urged portion on one of the containing portion and the opening/closing member; and an urging portion on the other of the containing portion and the opening/closing member at a position corresponding to the urged portion when the opening/closing member is at the closed position, the urging portion making the opening restraining portion contact the opening restrained portion.05-10-2012

Nami Tokunaga, Kanagawa JP

Patent application numberDescriptionPublished
20100225575PARTICLE DISPERSION FOR DISPLAY, DISPLAY MEDIUM AND DISPLAY DEVICE - A particle dispersion for display including: first particles for display including a colorant and a first polymer having a first charging group, the first particles for display being movable in response to an electric field; a first polymeric dispersant attached to the first particles for display; second particles for display including a colorant and a second polymer having a second charging group, the second particles for display being movable in response to an electric field; a second polymeric dispersant attached to the second particles for display; and a dispersing medium in which the first particles for display and the second particles for display are dispersed, the first polymeric dispersant and the second polymeric dispersant having different weight average molecular weights so that the first particles for display and the second particles for display start moving upon application of different voltages.09-09-2010

Norifumi Tokunaga, Kanagawa JP

Patent application numberDescriptionPublished
20120024779SURFACE TREATING AGENT, FILTERING MATERIAL FOR FILTER, AND BLOOD TREATMENT FILTER - A surface treating agent is comprising a copolymer including: a monomer (A) having a hydrophilic functional group of formula (02-02-2012

Shigetomi Tokunaga, Kanagawa JP

Patent application numberDescriptionPublished
20090161320ELECTRONIC CIRCUIT APPARATUS FOR COMPRESSOR - An electronic circuit apparatus for a compressor includes a board and a case. One corner of the board is fixed to case such that the board cannot move in the thickness direction and is movable in the flattening direction. According to this structure, even when an electronic part generates heat or outside air temperature of the case varies, the expansion or contraction of the board in the flattening direction is not affected by the expansion or contraction of the case in the flattening direction. Therefore, it is possible to prevent the deformation of the board and stress from being repeatedly applied to a soldering portion of the electronic part. As a result, it is possible to ensure the reliability of soldering strength for a long time.06-25-2009

Shinya Tokunaga, Kanagawa JP

Patent application numberDescriptionPublished
20120127774SEMICONDUCTOR DEVICE AND ELECTRONIC DEVICE - All interface pins for transmitting and receiving a signal having a predetermined function of a semiconductor integrated circuit element are formed on an outer periphery of the semiconductor integrated circuit element along one side of the semiconductor integrated circuit element. The one side of the semiconductor integrated circuit element is adjacent to two of sides of a BGA substrate, the two sides being not parallel to the one side. Of balls provided on the BGA substrate, balls electrically connected to the interface pins for transmitting and receiving a signal having a predetermined function are provided between the one side of the semiconductor integrated circuit element and the two sides of the BGA substrate.05-24-2012

Tsukasa Tokunaga, Kanagawa JP

Patent application numberDescriptionPublished
20090295285SPONTANEOUS EMISSION DISPLAY, SPONTANEOUS EMISSION DISPLAY MANUFACTURING METHOD, TRANSPARENT CONDUCTIVE FILM, ELECTROLUMINESCENCE DEVICE, SOLAR CELL TRANSPARENT ELECTRODE, AND ELECTRONIC PAPER TRANSPARENT ELECTRODE - A spontaneous emission display includes a support, a first electrode section provided on the support and having a fine wire structure portion made of a conductive metal and a translucent conductive film, and a display section formed on the first electrode section and having a light-emitting layer. The volume resistance of the fine wire structure portion of the first electrode is 1012-03-2009

Tsuyoshi Tokunaga, Kanagawa JP

Patent application numberDescriptionPublished
20110285060LAYERED MANUFACTURING METHOD AND LAYERED MANUFACTURING DEVICE - A layered manufacturing method for forming a desired three-dimensional object by using a powder as a raw material. The method forms a desired solid body, which is employed in a layered manufacturing device, including a stage member having stage surface; a transparent member having an optical window to cover the stage surface to form an enclosed region together with the stage surface; and an exhaust system for exhausting gasses in the enclosed region. The optical window is positioned at a vertical upper direction when the enclosed region is formed.11-24-2011