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Jun Yamaguchi

Jun Yamaguchi, Osaka-Shi JP

Patent application numberDescriptionPublished
20110008068DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device is disclosed which includes a developing tank, a developing roller, a carrying member, and a filter. Rotation of the developing roller causes a first airflow directed from the outside of the developing tank through an air path to the inside of the developing tank. Rotation of the carrying member causes a second airflow directed from below in an upward direction inside the developing tank. Collision between the first airflow and the second airflow causes a third airflow directed from the inside of the developing tank through the filter to the outside of the developing tank and further from the outside through the filter back to the inside of the developing tank. This arrangement prevents not only filter clogging but also a toner leak to the outside of the developing device.01-13-2011

Jun Yamaguchi, Tokyo JP

Patent application numberDescriptionPublished
20100224793DETECTION SYSTEM AND PROBE THEREFOR - There is provided a detection system capable of simultaneously detecting a plurality of fluorescences or phosphorescences having different dominant wavelengths generated from a minute region and a probe therefor. A fluorescence detection system includes a probe having a lens and optical fibers and arranged on one end thereof. The probe receives excitation light with a dominant wavelength and excitation light with a dominant wavelength at one end of the lens and converges the excitation lights at the solution containing Cy3 and Cy5 in a channel inside a microchemical chip and the probe receives fluorescence with a dominant wavelength and fluorescence with a dominant wavelength at the other end of the lens and converges the fluorescences at the tips of the optical fibers.09-09-2010

Patent applications by Jun Yamaguchi, Tokyo JP

Jun Yamaguchi, Aichi-Ken JP

Patent application numberDescriptionPublished
20100154497MECHANICAL KEY AND LOCKING/UNLOCKING KEY - The portability of a mechanical key and a locking/unlocking key having the mechanical key is improved. The mechanical key is housed in a portable device in such a manner that a key plate is folded into two at a portion formed with an inner groove. Thus, the housing space for housing the mechanical key can be reduced and the portable device can be made smaller. Accordingly, the portability of the locking/unlocking key can be improved.06-24-2010

Jun Yamaguchi, Aichi JP

Patent application numberDescriptionPublished
20090031768CYLINDER LOCK, CLUTCH DEVICE AND UNLOCKING DEVICE COMPRISING THEREOF - A cylinder lock includes a sleeve, and a key plug housed in the sleeve and having an output portion to output an interrupted motion of a clutch device by moving in an insertion and extraction direction by an insertion and extraction of a matching key. The key plug is formed by a pivoting spindle in which the output portion pivotally supports an input clutch element and an output clutch element of the clutch device in the output state by an insertion of the matching key.02-05-2009
20090031770CYLINDER LOCK AND UNLOCKING DEVICE COMPRISING THEREOF - A cylinder lock includes a sleeve having a plurality of locking holes, a key plug housed in the sleeve and having an output portion to output an interrupted motion of a clutch device by moving in an insertion and extraction direction by an insertion and extraction of a matching key, and a plurality of key matching members movably supported to the key plug, arranged to be insertable and removable in the plurality of locking holes respectively, and withdrawn from the plurality of locking holes respectively by an insertion of the matching key into the key plug. Dimensions of a key insertion and extraction direction, which is from a position where the plurality of key matching members are inserted into the plurality of locking holes to where they contact with the inner surface of the plurality of locking holes by a move operation in a key insertion direction of the key plug, are set to be at least two small and large dimensions which are different from one another.02-05-2009
20090031771CYLINDER LOCK AND UNLOCKING DEVICE COMPRISING THEREOF - A cylinder lock includes a sleeve having a locking hole, a key plug housed in the sleeve and having an output portion to output an interrupted motion of a clutch device by moving in an insertion and extraction direction by an insertion and extraction of a matching key, a key matching member movably supported to the key plug, arranged to be insertable and removable in the locking hole and withdrawn from the locking hole by an insertion of the matching key into the key plug, and a key plug locking mechanism for locking the key plug into the sleeve in the state that the key matching member is inserted into the locking hole. The key matching member is arranged with gaps between an inner surface of the locking hole in a key insertion and extraction direction in the state that the key plug is locked into the sleeve by the key plug locking mechanism.02-05-2009
20090031772CYLINDER LOCK AND UNLOCKING DEVICE COMPRISING THEREOF - A cylinder lock includes a sleeve having a plurality of locking holes, a key plug housed in the sleeve and having an output portion to output an interrupted motion of a clutch device by moving in an insertion and extraction direction by an insertion and extraction of a matching key, and a plurality of key matching members movably supported to the key plug, arranged to be insertable and removable in the plurality of locking holes respectively, and withdrawn from the plurality of locking holes respectively by an insertion of the matching key into the key plug. A portion of key matching members among the plurality of key matching members has a hook protruding toward a key insertion direction, and the sleeve has an engaging portion engaging with the hook by a movement in a key insertion direction of the key plug in locking holes among the plurality of licking holes which correspond to the portion of key matching members in the state that the plurality of key matching members are inserted into the plurality of locking holes.02-05-2009
20100090817VEHICLE ELECTRONIC KEY SYSTEM - A vehicle electronic portable key system including a master key and sub-key. A retainer is arranged in the vehicle to retain the sub-key. A control unit determines whether the master key or sub-key is located in a vehicle interior or exterior wireless communicatable area. When the key is located in one of the wireless communicatable areas, the control unit permits various operations of the vehicle in accordance with the communicable area in which the key is located. The control unit determines that the sub-key is in a lent state if the sub-key is removed from the retainer when the master key is located in the interior wireless communicatable area. In a state in which the sub-key is located in one of the wireless communicatable areas after removal from the retainer, the control unit limits the operations of the vehicle unless the sub-key is determined as being in the lent state.04-15-2010

Patent applications by Jun Yamaguchi, Aichi JP

Jun Yamaguchi, Osaka JP

Patent application numberDescriptionPublished
20100008693TONER CARTRIDGE AND IMAGE FORMING APPARATUS USING THE SAME - A toner cartridge includes: a toner container for containing a toner, the toner container being removably mounted in an image forming apparatus; and a storage section for electronically storing specific information held by the toner container, the storage section being electrically connected to a to-be-connected portion of the image forming apparatus when the toner container is mounted in the image forming apparatus, the storage section comprising: a board assembly including a board on which a storage element for storing the specific information held by the toner container as electronic information is mounted; a housing member for holding the board assembly; and a covering member for detachably integrating the board assembly and the housing member, the storage section being attachable to and removable from the toner container.01-14-2010
20100077346APPARATUS AND METHOD FOR AUTOMATIC FOCUS SHIFT - The focus is automatically shifted among a plurality of application windows which are displayed concurrently. In order to achieve this, in the present invention, an interruption of communication processing started by an application corresponding to a first window displayed with the focus is detected. Then a second window to which the focus is to shift is determined based on the detection result and state data. As a result, the focus is automatically shifted, based on the determination result, from the first window displayed on a display section to the second window.03-25-2010

Jun Yamaguchi, Minato-Ku JP

Patent application numberDescriptionPublished
20100027129LENS ARRAY UNIT AND IMAGE READING DEVICE - A lens array unit includes a first lens array plate, a second lens array plate, and a holder. The holder includes a first surface part provided with a plurality of first through holes respectively corresponding to a plurality of first outer lenses, a second surface part provided with a plurality of second through holes respectively corresponding to a plurality of second outer lenses, and a support part operative to support the first surface part and the second surface part so as to be located at a predetermined distance from each other. The first surface part, the second surface part, and the support part are integrally formed by a light shielding material, and the first lens array plate and the second lens array plate are held by the holder by being inserted into the gap between the first surface part and the third surface part and the gap between the second surface part and the third surface part, respectively.02-04-2010

Jun Yamaguchi, Yokkaichi-City JP

Patent application numberDescriptionPublished
20090117758Electrical junction box - An electrical junction box comprising a casing body including a bottom wall and a side wall extending upward from the bottom wall; a circuit board contained in the casing body; a connector housing disposed in a cutout section in the side wall and adapted to be coupled to a mating member; a filler filled in a space enclosed by the bottom wall, side wall and connector housing; and a packing disposed in a clearance between the cutout section and an outer peripheral surface of the connector housing to seal the clearance.05-07-2009
20090130882Electrical junction box - An electrical junction box comprising: a casing containing a circuit assembly therein; a connector housing disposed on a bottom of the casing and adapted to be coupled to a mating connector; a plurality of terminal metals connected to the circuit assembly and passing through a wall of the connector housing to be drawn into the connector housing; and a waterproof cover formed individually from the casing and disposed in the casing. The waterproof cover includes a first waterproof wall for covering a space above adjacent terminal metals, a second waterproof front wall and second waterproof side walls for partitioning a space between the adjacent terminal metals and a side wall of the casing.05-21-2009
20090137135Connector for board and electrical junction box - A connector for a board and an electrical junction box that utilizes the connector are provided. The connector prevents adjacent terminal metals from causing a short circuit. Each connector housing includes a hood section having an inner wall. Protrusions are provided on an outer surface of each inner wall to project outward in a thickness direction of the inner wall. Openings around adjacent through-holes are shifted in the thickness direction of the inner wall. Thus, it is possible to increase a distance on surface between adjacent terminal metals inserted into the adjacent through-holes. The distance on the surface between adjacent terminal metals prevents water adhering to the terminals metals from short-circuiting the adjacent terminal metals.05-28-2009
20090163053Electrical junction box - An electrical junction box has a casing for housing a circuit board on which electrically conductive paths are formed. Fuse-receiving sections in an upper wall of the casing are adapted to receive a mating member. Receiving ribs inward from an inside of a side wall of the casing at a position below the fuse-receiving sections to receive water that enters the casing from the fuse-receiving sections, guide ribs project inward from an inside of the side wall provided with the receiving ribs and extend from end edges of the receiving ribs to guide the water that is received on the receiving ribs to a bottom wall of the casing. A bottom wall of the casing defines drain holes.06-25-2009

Jun Yamaguchi, Fujisawa-Shi JP

Patent application numberDescriptionPublished
20090033029SHEET CONVEYING DEVICE AND IMAGE FORMING APPARATUS - A sheet conveying device for conveying a sheet includes a displacement-amount detector configured to detect an amount of displacement of a conveyed sheet from a conveyance reference in a width direction being substantially perpendicular to a sheet conveying direction and a plurality of sheet conveying roller portions configured to be shiftable in a direction substantially perpendicular to the sheet conveying direction while pinching the sheet having the amount of displacement detected by the displacement-amount detector. Before the sheet reaches the sheet conveying roller portions, the sheet conveying roller portions are shifted based on the amount of displacement detected by the displacement-amount detector from a conveyance-reference position in a direction in which the sheet is displaced. After the sheet reaches the sheet conveying roller portions, the sheet conveying roller portions are shifted while pinching the sheet so as to reduce the amount of displacement.02-05-2009
20090034992IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus includes an endless belt type transfer member configured to carry an image formed with developer of a plurality of colors, a drive roller configured to drive the transfer member by rotating while contacting the transfer member, a first detection unit configured to detect a mark provided on the transfer member, a second detection unit configured to detect the mark at a position different from the position of the first detection unit in a conveyance direction of the transfer member, and a correction unit configured to correct a conveyance speed of the transfer member using a difference between respective times at which the first and second detection units detect the mark. The first and second detection units are located such that an interval between respective positions at which the first and second detection units detect the mark is an integral multiple of a perimeter of the drive roller.02-05-2009

Patent applications by Jun Yamaguchi, Fujisawa-Shi JP