Fujitsu Corporation

Ricoh Company, Ltd.

Kabushiki Kaisha Toshiba

Fujifilm Corporation

Yamaha Corporation

Nippon Steel Corporation

Fuji Photo Film Company, Limited

Sumitomo Light Metal Industries, Ltd.

Hiroshi Kubo

Yoshifumi Kajiwara

Hiroyuki Takita

Shinya Kitaoka

Kenta Sugimori

Takeshi Akai

Manabu Matsushima

Takashi Fujii

Haruyoshi Yada

Fumiyuki Heishi

Norio Kimura

Kenichiro Morita

Yoshito Suzuki

Masashi Tomura

Kimiharu Yanagisawa

Hitoshi Hattori

Masahiro Itoh

Yoshiaki Nagao

Michihiro Shibata

Tatsuo Fushiki

Ayumu Hashimoto

Hiroki Shirado

Hajime Tsukahara

Hisanori Itoga

Hidekatsu Kobayashi

Seiya Yamada

Tatsuya Ozaki

Atsushi Kanaya

Kazunobu Yoneyama

Takehisa Shimazu

Tomohiko Ono

Yuuki Nakada

Yoshifumi Tsukamoto

Satoshi Saito

Jun Yamada

Hiroaki Sakashita

Atsuya Yoshida

Motoya Sano

Hiroaki Utagawa

Toshikazu Ishioka

Takashi Suzuki

Shingo Matsushita

Ikuhisa Okamoto

Tatsuaki Nagano

Kenji Hayasaka

Takeshi Komuro

Kei Tanemoto

Hiroshi Fukano

Kenji Yamada

Naohiro Kikkawa

Michitaka Suzuki

Takuya Sano

Junichi Tokita

Hidehiko Fujiwara

Koki Sakano

Kiyoshi Yamada

Manabu Hongo

Yoshinobu Makino

Kouki Murakami

Hiroaki Okamoto

Yasuo Kosuga

Nobuyoshi Suzuki

Masahiro Tamura

Tomohiro Furuhashi

Hiroshi Maeda

Shuuya Nagasako

Akira Kunieda

Toshio Takahashi

Makoto Hidaka

Hiroyuki Kawamoto

Takuro Sekiya

Shingo Yamaguchi

Kazuhiro Kobayashi

Junichi Iida

Satoshi Watanabe

Yasuyuki Nomizu

Masaru Nikaido

Ichiro Ichihashi

Tomoichi Nomura

Katsuhisa Homma

Akira Hirose

Satoshi Kanbayashi

Kazutoshi Katayama

Hideo Yamazaki

Hiroshi Kusumoto

Tetsuya Hanawa

Shin Tsuchida

Hiroki Tanaka

Takashi Taruki

Masashi Kohchi

Katsumi Takada

Isamu Fukuda

Toru Irie

Wataru Nara

Masayuki Sato

Yasuhiro Ite

Toshifumi Tanida

Mitsunori Maeda

Yoshihiro Suzuki

An image reading device and an image forming apparatus. The image reading device includes an image reader to read an image of a document, and a color reference component arranged to face the image reader. In the image reading device, the image reader reads the color reference component at a prescribed timing to obtain color reference image data, and correction data generating processes are executed based on the obtained color reference image data to generate correction data used to correct data of the image read by the image reader. In the image reading device, wherein the color reference component is moved relative to the image reader in a direction orthogonal to a direction toward and away from the image reader. The image forming apparatus includes the image reading device, and an image is formed on a recording material based on data of the image read by the image reading device.

Image reading device and image forming apparatus for correcting a read image

An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object; detect a second boundary between the object and the shadow of the object in the image information; and detect an inclination of the object in the image information from the first boundary and the second boundary detected by the processing circuitry.

Inclination detecting device, reading device, image processing apparatus, and method of detecting inclination

An edge detecting device includes processing circuitry. The processing circuitry is configured to acquire first color information and second color information in an image including a document region and a background region outside the document region. The first color information is color information of the background region and the second color information is color information of the document region. The processing circuitry is configured to detect a boundary between the background region and the document region from a change in color information between the first color information and the second color information.

Edge detecting device, tilt correction device, reading device, image processing apparatus, and edge detection method

An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object at detection positions in at least one of main-scanning and sub-scanning directions on an outline of the object; detect a second boundary between the object and the shadow of the object at detection positions in at least one of the main-scanning and sub-scanning directions on the outline of the object in the image information; detect a boundary group including detection results of the second boundary at the detection positions; and detect an inclination of the object in the image information from detection results of the first boundary, the second boundary, and the boundary group.

A sheet reading apparatus includes a sheet table on which a sheet is placed, a conveyor configured to convey the sheet, a reading guide configured to guide the sheet conveyed by the conveyor, and a reading device configured to read a shadow of the sheet conveyed by the conveyor, for detection of an inclination of the sheet. The sheet reading apparatus further includes a transparent member disposed at a position on a reading line of the reading device. The position on the reading line is withdrawn from the sheet and adjacent to the reading guide.

Sheet reading apparatus for detecting the shadow of a conveyed sheet to determine an inclination

An image processing apparatus includes circuitry to: obtain a read image read from an image of a document output from an image reading device; detect an edge between a background area and a document area in the read image; sample a detection result of the edge at each first interval in a first direction to extract a first boundary point group including a plurality of boundary points; sample the detection result of the edge at each second interval in the first direction to extract a second boundary point group including a plurality of boundary points; determine a noise removal condition based on the first boundary point group; remove, from the second boundary point group, a boundary point satisfying the noise removal condition as noise; and calculate a linear equation approximating the second boundary point group from which the noise is removed.

Image processing apparatus, method for processing image, and recording medium for noise removal and skew correction

An automatic document feeder includes: a recording-medium set unit, on which a recording medium is set; a recording-medium set detecting unit that detects whether the recording medium is set on the recording-medium set unit; a conveying unit that conveys the recording medium; a sheet-feeding cover section that constitutes part of the conveying unit and that includes an openable and closable sheet feeding cover; and a control unit that separately receives a power-on signal, which is output when a power source of an image forming device including the automatic document feeder is turned on, and an energy-saving return signal, which is output when a return is made from an energy saving state where a power source of part of the device is disconnected. When the power-on signal is received, the control unit performs an initialization operation to initialize each unit of the automatic document feeder.

Automatic document feeder, image forming device, and image reading device

A document reading device including an image reader. The image reader includes a first reader to read a first image from a first face of a document fed by a document feeder and a second reader to read a second face of the document. An operation mode is switchable between a normal operation mode in which the image reader is in an operation enabled state and an energy-saving mode in which the image reader is in an operation stop state. In a return from the energy saving mode to the normal operation mode, the image reader performs a start-up operation including a first initial operation for returning the first reader to the normal operation mode and then performs a second initial operation for returning the second reader to the normal operation mode.

Document reading device and image forming apparatus including same

An electronic device includes: an enclosure that has an opening formed therein; a switch disposed in the enclosure opposite the opening; a key top member disposed inside the opening; and a water sealing member that has a wall part which extends such that a height direction of the wall part coincides with an opening direction of the opening and which seals an inner surface of the opening, an arm part which extends from the wall part to the inner side of the opening and supports the key top member, and a wall part reinforcer provided in the wall part.

Electronic device

An electronic device including: a protrusion portion that projects towards a bottom face of a groove from the opposite side face of a second hook portion, that is inserted into the groove, and that makes close contact with a sealing material; and a cut-away portion that is formed to a side wall portion positioned further to the casing inside out of a pair of side wall portions forming the groove, the cut-away portion being formed at a position corresponding to a first hook portion.

Electronic device and electronic device manufacturing method

An automatic document feeder comprises: a feeding unit that causes an image of a first side of a document to be read by a first image reading unit; a second image reading unit that reads an image of a second side of the document; a release unit that supports a reading guide opposite to a reading surface of the second image reading unit and enables underneath of the reading surface to be released; and a paper ejection tray on which the document having been subjected to image reading and ejected from a paper ejection roller pair is accumulated, wherein an end fence that rises up at a document ejection direction upstream side of the paper ejection tray is configured of separate members that are an upper portion and a lower portion, and a rotational pivot of the release unit is provided downstream from the end fence in a feeding direction.

Automatic document feeder, image reading device, and image forming apparatus

An electronic device includes a housing including an opening-portion and an annular-projection provided in the vicinity of the opening-portion from the housing, the annular-projection projecting so as to surround a periphery of the opening-portion, a frame member including a tubular-portion having an outer surface that faces the annular-projection to be fitted with the annular-projection, a top plate exposed from the opening-portion with the tubular-portion fitted with the annular-projection, an extension-portion extending from the outer surface of the tubular-portion, the tubular-portion being expanded toward the annular-projection when a pressing force is applied to a surface of the top plate exposed from the opening-portion with the annular-projection and the tubular-portion fitted with each other, and an O-ring that contacts entire peripheries of the outer surface of the tubular-portion and an inner surface of the annular-projection.

Electronic device having waterproof structure

According to an embodiment, an ADF includes: a sheet-feed cover unit; a switch unit to be switched on or off depending on whether the sheet-feed cover unit is open or closed and including a first terminal, to which a first voltage, by which a driving motor is driven, is input, and a second terminal connected to the driving motor; and an open/close-detection circuit unit that includes a first switch circuit and a second switch circuit. The first switch circuit is switched on or off based on a threshold voltage that is larger than a second voltage to be generated in the driving motor by a jammed-document removing motion and smaller than the first voltage. The open/close-detection circuit unit detects that the sheet-feed cover unit is closed when the second switch circuit is energized, but detects that the sheet-feed cover unit is open when the second switch circuit is de-energized.

Automatic document feeder and image forming apparatus including the same

An image reading apparatus includes: a transmitting glass; and a step member that is located upstream of a reading position, at which an image of a conveyed document is read by a reading unit via a transmitting glass, in a conveying direction of the document, and has a document guiding surface at a position away from a surface of a transmitting glass by a prescribed distance and forms a step between the document guiding surface and the transmitting glass. The step member is provided with a protrusion protruding downstream in the conveying direction of the document to form space between the transmitting glass and a downstream part of the step member in the conveying direction of the document.

Image reading apparatus and image forming apparatus

According to an embodiment, an ADF that feeds and conveys original document sheets one sheet by one sheet from a tray unit to a read position on a document glass by motive power from a driving motor includes: an opening/closing unit operable to open and close relative to the document glass; an open/close detection sensor that detects an open/closed state of the opening/closing unit; a first interlock switch, which is arranged between a power source and the driving motor, that is on when the opening/closing unit is closed, and vice versa; and a control circuit that determines the open/closed state of the opening/closing unit based on detection outputs of the first interlock switch and the open/close detection sensor. The control circuit determines that the opening/closing unit is in the closed state when the first interlock switch is on and the open/close detection sensor is detecting the closed state.

Automatic document feeder, image reading device including the same, and image forming apparatus including the same

Growing community of inventors

Kawasaki, Japan

Hiroshi Kubo