Canon Kabushiki Kaisha

Fuji Xerox Co., Ltd.

Nippon Steel Corporation

Nec Corporation

Nippon Steel & Sumitomo Metal Corporation

Other

Canon Denshi Kabushiki Kaisha

Lenovo Innovations Limited (hong Kong)

Hiroshi Hagiwara

Kenji Watanabe

Takashi Fujita

Hiroaki Awano

Emiko Shiraishi

Katsumi Harada

Takuya Makita

Kojiro Tsutsumi

Yasuhiro Kusumoto

Hiromitsu Kumada

Yoshinori Nakano

Junichi Hirota

Masayuki Hashimura

Takateru Ohkubo

Yohei Suzuki

Seiji Hara

Toshiyasu Yukawa

Masafumi Monde

Yoshitaka Zaitsu

Akinobu Hirayama

Yoshiko Kubo

Takanari Miyaki

Kosuke Ogino

Toshiaki Sako

Takehiro Uchiyama

Takamitsu Soda

Naoto Tsuchihashi

Atsushi Mizuno

Hiroaki Hayashi

Kenichiro Naito

Kazunori Onishi

Ken-ichi Iida

Hiroshi Hirata

Satoshi Tomita

Takayuki Kisu

Kohichi Isobe

Munehiro Kuramochi

Takashi Yano

Hiroshi Kita

Noriaki Sato

Kenichi Iida

Masatoshi Itoh

Masato Saito

Munehito Kurata

Tetsuya Sano

Tatsuro Ochi

Tomonori Shida

Katsuhiko Shinjo

Naohisa Nagata

Yuuji Takayama

Takayuki Miyamoto

Minoru Sodeura

Noriyuki Yamada

Yasuo Yoda

Hikaru Uchidate

Shuhei Watanabe

Kazuhiko Okazawa

Ikuo Ochiai

Hajime Sugaya

Seiichi Koike

Masaaki Nakamura

Kentaro Yamashita

Takahiro Nakamura

Shingo Harada

Keisuke Endoh

Ayumi Onishi

Yoshitake Matsubara

Sadao Furuoya

Satoshi Mizuhashi

Yasuhisa Mizuta

Katsuaki Shiiki

Takashi Yotsuyanagi

Shoichi Suzuki

Shingo Suda

Shouich Suzuki

Yuki Nagato

Toshio Banno

Kouichi Maeyama

Masayuki Takao

Shotaro Yoshimura

Senju Sato

Takanori Miyaki

Kouichi Yamazaki

Tatsurou Ochi

An image forming apparatus includes a first drive source of a first roller and a third roller, a second drive source of a second roller, and a control unit, which is configured to perform a first control of changing a conveying speed of a sheet by the first roller from a reference speed in order to adjust timing at which the sheet reaches an image forming region until a front end of the sheet reaches a first position between the first roller and the image forming region. The control unit is configured to control a feeding timing of a second sheet to be fed to a main conveyance path after a first sheet so that the first control is not executed while the first sheet is being conveyed by both the second roller and the third roller.

Image forming apparatus that can form images on both sides of sheet

An image forming apparatus includes a stack portion having recording materials, an image forming unit, a basis weight detection unit, an operating sound detection unit, and a mode selection unit. The basis weight detection unit detects a recording material basis weight based on an ultrasonic wave. The operating sound detection unit detect an abnormality of a generated operating sound. The mode selection unit selects, for each recording material fed to the image forming unit, between transmitting to the basis weight detection unit a first instruction for detecting the recording material basis weight and transmitting to the operating sound detection unit a second instruction for detecting the operating sound abnormality. In determining an interval at which each second instruction is transmitted, the mode selection unit determines the interval so that the interval and a cycle, in which properties of recording materials on the stack portion are repeated, do not continuously coincide.

Image forming apparatus

An image forming system includes an image forming unit, a plurality of drive units configured to drive the image forming unit, a sound detection unit configured to detect operation sounds of the plurality of drive units, and a control unit configured to implement a drive mode for operating at least one of the plurality of drive units and not operating other drive units, without forming an image on a recording material by the image forming unit, wherein the control unit implements the drive mode when the value of a counter reaches a threshold value, the counter being incremented with each image formation on a recording material by the image forming unit, and wherein the identification operation identifies a component causing the predetermined sound based on the operation sounds detected by the sound detection unit during a period in which the drive mode is being implemented.

Detection unit for operation sounds of image forming system

A sound diagnosis system includes: a setting unit configured to set a threshold for each of a plurality of time sections, based on a sound wave level in each of the plurality of time sections of a plurality of first sound data classified in a first group; and a determination unit configured to determine whether or not an abnormal sound is generated by calculating a comparison value for each of the plurality of time sections based on a sound wave level in each of the plurality of time sections of one or more second sound data classified in the first group, and comparing the comparison value for each of the plurality of time sections with the threshold value of the corresponding time section of the first group, the threshold value being set by the setting unit.

Sound diagnosis system, information processing apparatus, and computer-readable storage medium

An image forming apparatus includes an image forming unit having a plurality of members, a control unit, and a sound collecting unit. The control unit controls operations of the plurality of members in a first operation mode in which the image forming unit forms an image on a recording material. The sound collecting unit collects a sound that arises in the image forming apparatus during the first operation mode execution to generate a sound signal. When it is determined, based on the generated sound signal, that an abnormal sound has arisen, the control unit determines a source of the abnormal sound by transitioning to a second operation mode after the first operation mode has ended and causing, in the second operation mode, one or more members, from the plurality of members, that are possible sources of the abnormal sound to operate separately from the remaining plurality of members.

Image forming apparatus, abnormality diagnosis method, and image forming system

An image forming apparatus includes a conveyance unit, a detection unit, and a determination unit. The conveyance unit conveys a sheet. The detection unit detects a sound that emanates when the conveyance unit operates. The determination unit performs state determination. In a case where a volume of a sound detected by the detection unit is not higher than or equal to a predetermined sound volume, the determination unit determines that the conveyance unit is not normally operating. In a case where the detected sound volume is higher than or equal to the predetermined sound volume, the determination unit determines that the conveyance unit is normally operating.

Image forming apparatus and image forming system configured to determine operation

An image forming apparatus includes a transfer member, a fixing unit, a double-side feeding path through which the sheet, performed with image formation on a first surface thereof and passed through the fixing unit; is fed to transfer the toner image onto a second surface thereof, a first feeding unit to feed the sheet in the double-side feeding path and a second feeding unit to feed the sheet fed by the first feeding unit toward the transfer member. A controller selects a first double-side feeding control in which the sheet is fed by the second feeding unit or a second double-side feeding control in which the sheet is fed by the first feeding unit and the second feeding unit in a case in which the double-side printing is performed in the second mode.

Image forming apparatus with a first double-side feeding and a second double-side feeding

A control apparatus includes a prediction unit configured to repeatedly predict a first target value based on prediction information; a transmission/reception unit configured to repeatedly transmit the prediction information to a server and receive a second target value having higher prediction accuracy than the first target value predicted by the server; a management unit configured to update a first error of prediction in the prediction unit based on the second target value and the first target value; and a setting unit configured to set a control target value based on the first target value and the first error. A first time interval in which the prediction unit repeatedly predicts the first target value is shorter than a second time interval in which the transmission/reception unit repeatedly transmits the prediction information to the server.

Control apparatus and control system

There is provided an image forming system that includes an image forming apparatus including, a first variable mechanism that varies from a first state to a second state or from the second state to the first state when physically operated by a user, a first detection unit configured to detect the variation of a state of the first variable mechanism, and a sound collection unit. The image forming system further includes a generation unit configured to generate, when the variation is detected by the first detection unit, first statistical information regarding at least one sound wave obtained by the sound collection unit in a period based on a timing when the variation is detected.

Image forming system

An image forming apparatus includes an image formation unit configured to form an image on a sheet at a formation position; a circulatory conveyance path for conveying the sheet with the image formed at the formation position on a first side thereof to the formation position again; a reading unit configured to read the first side of the sheet conveyed through the circulatory conveyance path and output image information; and a conveyance control unit configured to convey the sheet in one conveyance mode out of a plurality of conveyance modes when the reading unit reads the first side of the sheet. A range, in a conveyance direction, of the sheet that can be read by the reading unit while a conveyance speed of the sheet is constant is different for each of the plurality of conveyance modes.

Image forming apparatus having plurality of conveyance modes

An image forming apparatus includes an image forming unit configured to form an image on a sheet; a reading unit configured to read the image formed on the sheet by the image forming unit during a period in which the sheet is being conveyed by a conveying unit; a control unit configured to control a conveyance speed of the sheet by the conveying unit; and a determination unit configured to determine whether or not there is an image defect in the image formed on the sheet by the image forming unit based on image data of a first partial image read by the reading unit, excluding a second partial image passing through the reading unit during a speed variation period in which the control unit varies the conveyance speed of the sheet.

Image forming apparatus for determining image defect

A feeding apparatus includes a placement unit on which a recording material is to be placed, a feeding rotating member, a regulating plate, a detecting unit, and a control unit. The feeding rotating member feeds the recording material placed on the placement unit. The regulating plate regulates a position of an upstream end of the recording material placed on the placement unit in a direction of feeding by the feeding rotating member. The detecting unit detects a size of the recording material from a position of the regulating plate. The control unit changes duration of execution of a recording-material feeding operation performed by the feeding rotating member based on the size of the recording material detected by the detecting unit and a size of the recording material specified in advance by a user.

Feeding apparatus and method for the same

To display an image list stored in a memory with good visibility and to display the image list at a high speed, an image display device reads an image file in an Exif format, extracts a thumbnail image included in the image file in the Exif format, and generates a displayed image having a predetermined size and a square shape, thus displaying it in the image list. It is possible to improve visibility in displaying the image file aligning square-shaped displayed image having the same size while precluding blanks. It is possible to perform high-speed processing in producing an image list using thumbnail images included in image files in the Exif format.

Image display device, image list display method, and image list display program

Growing community of inventors

Suntou-gun, Japan

Hiroshi Hagiwara