Jam Patents (Class 399/21)
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Patent number: 8773684Abstract: An image forming apparatus according to the present disclosure includes: a printing unit configured to perform printing on a recording medium; a multiple-sheet-feed detecting unit configured to detect a multiple sheet feed of the recording medium; an image holding unit configured to hold an image expected to print on the recording medium on which the multiple sheet feed is detected (i.e. the multi-fed medium); and a print control unit configured to control the printing unit. The print control unit is further configured (a) to cancel printing on the multi-fed medium, and (b) to cause the printing unit to print the held image on another recording medium, which (b1) is in transfer after the multi-fed medium, (b2) is nearest in a transferring order to the multi-fed medium, and (b3) has a property same as that of the multi-fed medium.Type: GrantFiled: August 10, 2012Date of Patent: July 8, 2014Assignee: Kyocera Document Solutions, Inc.Inventor: Masato Hirota
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Publication number: 20140186060Abstract: An image forming apparatus includes a drive roller, a rotary drive source, a rotation signal detection portion, and a removal determination portion. The drive roller is configured to rotate in contact with a printing medium. The rotary drive source is configured to supply a rotational force to the drive roller. The rotation signal detection portion is configured to detect a rotation signal indicating that the drive roller is rotated while the rotary drive source is being powered off. The removal determination portion is configured to determine whether the printing medium that has stopped in contact with the drive roller is removed, based on detection of the rotation signal by the rotation signal detection portion.Type: ApplicationFiled: December 20, 2013Publication date: July 3, 2014Applicant: KYOCERA Document Solutions Inc.Inventor: Masaya Tashiro
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Patent number: 8755697Abstract: An image forming apparatus includes a carrying unit, a resistance unit, a jam detection unit, a paper detection unit and a control unit. Responding to the jam detection unit detecting that a jam occurring location is outside the resistance unit, the control unit sets a part of the carrying unit, the part including at least the resistance unit, as an accumulation unit where a remaining sheet is accumulated, in accordance with a size of the remaining sheet. The remaining sheet is detected by a paper detection unit when the jam occurs. The control unit releases, among a resistance roller pair and carrying roller pairs of the carrying unit, the rollers of a pair located in the accumulation unit from pressing against each other, and makes the carrying unit carry the remaining sheet to the accumulation unit.Type: GrantFiled: October 15, 2012Date of Patent: June 17, 2014Assignee: Konica Minolta Business Technologies, Inc.Inventor: Hiroyuki Arai
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Publication number: 20140153937Abstract: A printing system, a printing apparatus, a method of controlling the same and a storage medium. The printing apparatus determines whether a sheet jam occurs while print processing is performed, interrupts the print processing in a case where it is determined that the sheet jam occurs, and conveys a sheet remaining on a sheet conveyance path to a sheet holding unit. The apparatus detects whether or not there is a sheet in the sheet holding unit, and makes a notification to a user instructing removal, from the sheet holding unit, of a sheet in a case where it is detected that there is a sheet in the sheet holding unit.Type: ApplicationFiled: November 8, 2013Publication date: June 5, 2014Applicant: Canon Kabushiki KaishaInventor: Koichi Unno
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Publication number: 20140140711Abstract: An image forming apparatus including at least one option cassette, and a paper jam handling method performed in the image forming apparatus are provided. The paper jam handling method includes the operations of detecting whether paper jam occurs in the image forming apparatus, checking whether paper sheets exist on a transfer path of the image forming apparatus and on a transfer path of the option cassette, when the paper jam is detected, and leaving the paper sheet on the transfer path of the option cassette as it is and discharging the paper sheet caught on the transfer path of the image forming apparatus. Accordingly, paper damage or paper consumption may be prevented by not discharging a paper sheet caught on a transfer path of at least one option cassette during paper jam.Type: ApplicationFiled: January 28, 2014Publication date: May 22, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sang-gyu Park, Yun-su Kim
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Publication number: 20140133872Abstract: A fixing unit which may be disposed in an image forming includes a heating roller, at least one pressure roller being in pressure contact with the heating roller to form a nip together with the heating roller, and a pressure releasing member partially restricting application of pressure to the nip. The nip includes an effective fixing section used for fixing. The pressure releasing member includes a pair of pressure releasing parts inserted into sections of the nip other than the effective fixing section, a connection part connecting the pair of pressure releasing parts, and guide parts extending from the connection part in the same direction as the pair of pressure releasing parts. The pressure releasing member prevents deformation of a portion of an elastic layer formed on the heating roller which corresponds to the effective fixing section.Type: ApplicationFiled: December 20, 2012Publication date: May 15, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung Woo KANG, Jin Gue Ko, Hyun Joon Keum, Seung Jun Lee
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Patent number: 8718493Abstract: A controller for controlling an image forming apparatus having a light detection unit controls at least two operations including: 1) operation of detecting a jam of a recording sheet in a sheet transfer path based on a light intensity level detected by the light detection unit when image forming is performed; and 2) operation of controlling switching of an operation mode of the image forming apparatus to an energy save mode based on a light intensity level detected by the light detection unit.Type: GrantFiled: June 1, 2011Date of Patent: May 6, 2014Assignee: Ricoh Company, Ltd.Inventor: Hiroaki Nagata
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Patent number: 8705989Abstract: A color electrophotographic image forming apparatus for forming an image on a recording material, wherein plurality of cartridges are detachably mounted to a main assembly of the apparatus, the color electrophotographic image forming apparatus includes a cartridge supporting member for supporting the cartridges, the cartridge supporting member being movable between an inside position which is in the main assembly the outside position which is out of the main assembly; a belt unit including a feeding belt for feeding a recording material on which the image is to be formed; and locking means for locking the cartridge supporting member and the belt unit in the state that the feeding belt and the cartridge are contacted to each other, wherein the belt unit and the cartridge supporting member in the state of being locked by the locking means are movable from the inside position to the outside position, and the feeding belt and the cartridge are capable of being spaced from each other by releasing the locking meansType: GrantFiled: February 26, 2010Date of Patent: April 22, 2014Assignee: Canon Kabushiki KaishaInventors: Koji Kawamura, Seiji Inada
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Patent number: 8705995Abstract: An image forming apparatus includes a transporting section including a transport path for transporting a recording medium; an image forming unit that forms an image on the recording medium that is transported at the transporting section; a fixing device that fixes the image formed on the recording medium at the image forming unit while heating the image; and a controller that performs control so that Pw<Pw1+Pw2 is set and so that a forced transporting operation of the transporting section is performed before starting or after ending a preparation operation of the fixing device, where Pw1 is electric power for the preparation operation including increasing a temperature of the fixing device, Pw2 is electric power for the forced transporting operation of forcedly transporting the recording medium jammed in the transporting section, and Pw is a specified value of electric power consumption.Type: GrantFiled: May 11, 2011Date of Patent: April 22, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Shouichi Maeda, Junichi Asaoka, Yoshinori Koike
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Publication number: 20140079411Abstract: A user-friendly image forming system is described which can notify users of the situation of sheets remaining on conveying routes when a paper jam occurs. The image forming system includes a conveyance unit for conveying sheets, a display unit for displaying information, a jam determination unit for determining if a paper jam occurs on the conveying routes, and a control unit for controlling the conveyance unit and the display unit on the basis of the result of determination by the jam determination unit and the position of the sheet managed by a paper management unit. When a paper jam occurs, the control unit determines whether or not a sheet remaining on the conveying route can be automatically discharged by driving the conveyance unit, and displays the result of determination on the display unit in association with the position of the sheet.Type: ApplicationFiled: September 18, 2013Publication date: March 20, 2014Applicant: KONICA MINOLTA, INC.Inventor: Yasushi SAITSU
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Patent number: 8676065Abstract: An image forming apparatus including at least one option cassette, and a paper jam handling method performed in the image forming apparatus are provided. The paper jam handling method includes the operations of detecting whether paper jam occurs in the image forming apparatus, checking whether paper sheets exist on a transfer path of the image forming apparatus and on a transfer path of the option cassette, when the paper jam is detected, and leaving the paper sheet on the transfer path of the option cassette as it is and discharging the paper sheet caught on the transfer path of the image forming apparatus. Accordingly, paper damage or paper consumption may be prevented by not discharging a paper sheet caught on a transfer path of at least one option cassette during paper jam.Type: GrantFiled: May 26, 2009Date of Patent: March 18, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-gyu Park, Yun-su Kim
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Publication number: 20140064748Abstract: An image forming apparatus capable of properly reducing recovery printing time, while reducing abrasion and deterioration of image bearing members. As an image formation mode determining method, a first method is selected before a print job is interrupted e.g. a jam, whereas for recovery printing, one of the first method and a second method is selected. In the first method, if an image to be formed is a color image, an image formation mode is set to an all-contact mode having an intermediate transfer belt brought into contact with all of photosensitive members, and if the image is a monochrome image, the mode is set to a partial-contact mode having the belt brought into contact only with a photosensitive member for black toner. In the second method, the mode is set to the all-contact mode for all pages on which image formation is to be performed.Type: ApplicationFiled: August 27, 2013Publication date: March 6, 2014Applicant: CANON KABUSHIKI KAISHAInventor: Yasuhiro YAKO
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Patent number: 8654384Abstract: An image forming apparatus to be network-connected is provided with an acquirer for requesting event information indicating a specific event having occurred in another image forming apparatus via a network and acquiring the event information transmitted via the network in response to this request, and a processor for performing a predetermined process to deal with the specific event when the event information is acquired by the acquirer.Type: GrantFiled: August 30, 2011Date of Patent: February 18, 2014Assignee: Kyocera Mita CorporationInventors: Katsuhisa Kamomae, Shinya Ogawa, Masaki Sone
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Patent number: 8644717Abstract: An image forming apparatus and a method are provided. The apparatus includes an image forming unit that discharges ink; a transfer unit that performs a first conveying operation of conveying the sheet in a state in which a first surface thereof faces the image forming unit, and a second conveying operation of conveying the sheet in a state in which a second surface thereof faces the image forming unit after the first conveying operation; a detecting unit that detects a jam of the sheet subjected to the second conveying operation; a setting unit that sets a dry time for drying the ink; and a control unit that controls the transfer unit to start the second conveying operation after the dry time has elapsed after the first conveying operation, wherein the setting unit sets the dry time for a current sheet based on the detection result of a previous sheet.Type: GrantFiled: May 30, 2008Date of Patent: February 4, 2014Assignee: Brother Kogyo Kabushiki KaishaInventor: Tetsunori Mori
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Patent number: 8632071Abstract: An image forming apparatus is provided that, even when a recording material is conveyed with a short interval between papers, reduces mistaken detection of a jam without reducing throughput of image formation. To accomplish this, when an interval between papers is not detected by a sensor that is disposed upstream in a conveyance direction but is detected by a sensor that is disposed downstream in the conveyance direction, there is a high possibility of determining that a jam has been generated in which recording material wraps around a fixing roller, but even in such a case, discharge processing is executed normally without a determination that a jam has been generated in which recording material has wrapped around a fixing roller, by using a recording material size and a time period of detection of the interval between papers.Type: GrantFiled: March 31, 2011Date of Patent: January 21, 2014Assignee: Canon Kabushiki KaishaInventors: Naoki Inoue, Nobuyuki Kobayashi
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Patent number: 8634729Abstract: An image forming apparatus includes: a sheet conveyance section having a sheet storing member to store sheets that have been aligned in a prescribed placing direction, which conveys a sheet stored in the sheet storing member; an image forming section having an image carrier, which forms an image on the image carrier; an image transfer section which transfers the image formed on the image carrier onto a sheet conveyed by the sheet conveyance section; a winding detection section which detects whether or not the sheet conveyed by the sheet conveyance section is wound around the image carrier; and a controller which controls to instruct an operator to conduct a change operation of the placing direction of the sheets stored in the sheet storing member based on a sheet winding detection signal outputted from the winding detection section.Type: GrantFiled: November 11, 2010Date of Patent: January 21, 2014Assignee: Konica Minolta Business Technologies, Inc.Inventors: Akira Okamoto, Kenji Yamamoto, Kazumichi Yamauchi, Hideki Nakamura, Kazutoshi Yoshimura, Masatoshi Ogawa
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Patent number: 8634757Abstract: An image forming apparatus 1 is provided with a double-side transport unit 80 capable of clearing a paper jam. The double-side transport unit 80 is provided with a reverse transport passage 75 provided with a reverse roller 57 for switching back paper P having an image formed on one side thereof, a return transport passage 76 for transporting the paper P turned upside down through the reverse transport passage 75 to an image forming portion 10, and a reverse introduction passage 74a extending from a downstream side, with respect to a branch transport passage 74, of the second transport roller 56 that is disposed close to the reverse transport passage 75, to the reverse transport passage 75. The double-side transport unit 80 can be taken out of or put in an apparatus main body 1a in a direction perpendicular to a paper transport direction.Type: GrantFiled: March 3, 2010Date of Patent: January 21, 2014Assignee: Kyocera Document Solutions, Inc.Inventor: Masaru Takagi
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Patent number: 8626050Abstract: Detachable sheet feeding units are connected to an image forming apparatus. A transmitting unit transmits a feeding instruction via a signal line to a sheet feeding unit that is to perform sheet feeding. A first sheet detector, which is placed in the sheet feeding unit, detects a sheet that has been fed from the sheet feeding unit. A second sheet detector is provided downstream of the first sheet detector in terms of the sheet conveyance direction. If the feeding instruction is transmitted and a plurality of sheets are fed from the sheet feeding unit, an image formation controller determines whether to cause the image forming operation to continue or stop based upon whether a sheet-to-sheet interval of a plurality of sheets has been detected by the second sheet detector in a state in which the result of detection by the first sheet detector indicates presence of a sheet.Type: GrantFiled: February 19, 2008Date of Patent: January 7, 2014Assignee: Canon Kabushiki KaishaInventor: Atsuya Takahashi
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Patent number: 8626003Abstract: A printing apparatus includes non-transparent doors and/or drawers on a body of the printing apparatus. The non-transparent doors and drawers allow access to internal areas of the body of the printing apparatus. A processor is within the body of the printing apparatus, and the processor controls actions of the printing apparatus. Also, at least one internal graphic user interface display is within the body of the printing apparatus. The internal graphic user interface display is operatively connected to the processor, and the internal graphic user interface display is positioned to be observable only when the non-transparent doors and drawers are open.Type: GrantFiled: April 26, 2011Date of Patent: January 7, 2014Assignee: Xerox CorporationInventors: Gareth Andrew Dobinson, Nicholas Baxter, Alexandria Jayne Dobinson, Lewis Williams
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Patent number: 8626053Abstract: A medium correcting device includes: a first holding body that holds a first rotating body having a surface moving circumferentially; a second holding body that holds a second rotating body having a surface that moves following the circumferential movement of the first rotating body and becoming a coupled body incorporating the first and second rotating bodies; a rotation shaft connected to a driving system when the coupled body is housed in a housing body and separated from the driving system when the coupled body is removed; an off-center cam eccentrically fixed to the rotation shaft, presses one rotating body against the other by an amount of pressing according to an angle of the off-center cam, the amount being larger in a downward eccentric direction; and a center-of-gravity correction section fixed to the rotation shaft, causing a larger torque than a torque produced by the off-center cam's own gravity.Type: GrantFiled: June 9, 2010Date of Patent: January 7, 2014Assignee: Fuji Xerox Co., Ltd.Inventor: Haruhiko Nishida
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Patent number: 8620183Abstract: In a sheet conveying apparatus according to the present invention, a guide unit is rotatably disposed in an apparatus body. The sheet conveying apparatus includes a conveying portion which is disposed in the guide unit in such a manner as to be movable relatively to a cover and conveys the sheet on a second conveyance path, and a positioning portion which is disposed in the cover and positions the conveying portion at the cover when the cover is closed with respect to the apparatus body. The guide unit is moved to a closure position during the operation for closing the cover, and thereafter, the positioning portion positions the conveying portion by the operation for closing the cover.Type: GrantFiled: October 9, 2009Date of Patent: December 31, 2013Assignee: Canon Kabushiki KaishaInventor: Shinichiro Hosoi
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Patent number: 8610911Abstract: A conversion unit converts a command part of an image inclusion command into an internal command. A first memory unit stores an image non-inclusion command and the internal command converted by the conversion unit. A second memory unit stores an image data part of the image inclusion command. A restart page number memory unit stores restart page number information when a print process being executed is interrupted in order to execute an interruption print process. When restarting the interrupted print process, a control unit executes control to read out the internal command and the image non-inclusion command stored in the first memory unit up to the page indicated by the restart page number information, and from the page indicated by the restart page number, further executes control to read out from the second memory unit the image data part following the internal command read out from the first memory unit.Type: GrantFiled: September 15, 2011Date of Patent: December 17, 2013Assignees: Casio Electronics Manufacturing Co., Ltd., Casio Computer Co., Ltd.Inventor: Miyoshi Sasakura
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Publication number: 20130322894Abstract: An image forming apparatus including: a passage defining assembly; a movable member; an assisting member; and a sensor. The passage defining assembly defines a conveying passage. The passage defining assembly is pivotally movable relative to the main casing between a first position for defining the conveying passage and a second position for expanding the conveying passage in size greater than that at the first position. The movable member is positioned to intersect the conveying passage and is pivotally movably supported to the passage defining assembly. The assisting member is configured to abut the movable member when the passage defining assembly is moved from the first position to the second position to allow the movable member to pivotally move relative to the passage defining assembly. The sensor detects whether the movable member is pivotally moved.Type: ApplicationFiled: January 10, 2013Publication date: December 5, 2013Inventors: Kei Ishida, Hisashi Tsukawaki
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Publication number: 20130315610Abstract: 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.Type: ApplicationFiled: May 17, 2013Publication date: November 28, 2013Applicant: RICOH COMPANY, LIMITEDInventors: Hiroaki UTAGAWA, Hiroshi KUBO, Shinya KITAOKA, Takehisa SHIMAZU, Takeshi AKAI, Fumiyuki HEISHI, Norio KIMURA, Yoshito SUZUKI, Jun YAMADA
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Publication number: 20130308963Abstract: A sheet processing apparatus, by which a failure in control does not occur even if cutting wastes are conveyed by a conveying unit and an image forming apparatus having the sheet processing apparatus are provided. The sheet processing apparatus has a cutter unit for cutting a sheet, a dust box for accommodating the cutting wastes, a conveying belt pair which conveys the cut sheet, sensors for detecting the sheet conveyed by the conveying belt pair, and a controller for controlling conveyance of the sheet based on the signals detected by the sensors, wherein when the length of the sheet detected by the sensor is equal to or less than a predetermined amount, the controller does not determine the sheet as a sheet.Type: ApplicationFiled: July 26, 2013Publication date: November 21, 2013Applicant: CANON KABUSHIKI KAISHAInventor: Kenichi Hayashi
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Publication number: 20130302045Abstract: An image forming apparatus that is capable of using a residual sheet effectively even in a double-sided printing mode. A control unit controls to perform a double-sided image formation process to recording sheets. A detection unit detects a jam of the recording sheet. A determination unit determines whether residual sheets, which are recording sheets on the conveyance path other than a jamming sheet that generates a jam, are available in the image forming process resumed after the jam is removed based on the number of copies of sheets on which the same image is formed, the recording sheets on which images have been formed on one sides, and the latest recording sheet that was normally ejected. The control unit stops the process and ejects the residual sheets that are determined unavailable from the conveyance path when a jam is detected during the process.Type: ApplicationFiled: May 1, 2013Publication date: November 14, 2013Applicant: CANON KABUSHIKI KAISHAInventor: Masahiro Serizawa
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Publication number: 20130302044Abstract: An indicator disposed on an openably closable door disposed on a part of an exterior panel includes a light source disposed on a housing positioned in an interior of the door and a diffusion lens disposed on the door and opposed to the light source, wherein the light source is mounted on a support part disposed on the housing so that an optical axis of the light source is coincident with that of the diffusion lens. The door includes a recessed portion including a retainer, and the diffusion lens is supported in the recessed portion with the retainer pressing an external surface of the diffusion lens entirely so that the light from the light source is prevented from leaking from the surface of the door.Type: ApplicationFiled: April 16, 2013Publication date: November 14, 2013Applicant: RICOH COMPANY, LTD.Inventor: Makoto YOSHIOKA
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Publication number: 20130294785Abstract: An image forming apparatus capable of distinguishing whether paper material retained in a sheet conveying path is an original or a recording material. An image forming apparatus includes an image reading unit that reads an original, a photosensitive drum that forms an image on a recording sheet, and a main motor and a double-sided-printing drive motor which convey the original and the recording sheet. Paper sheet sensors detect an occurrence of a jam of the original or the recording sheet. When a paper jam is detected, a CPU controls a display section to display a plurality of sheets retained in a conveying path, in a manner distinguishing between the original and the recording material.Type: ApplicationFiled: May 7, 2013Publication date: November 7, 2013Applicant: CANON KABUSHIKI KAISHAInventor: Toru TAKAHASHI
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Patent number: 8573593Abstract: An image forming apparatus includes a unit that detects the position of a sheet in a sheet transport path when jamming is detected, a forced moving processing unit that, when jamming is detected and rotational driving of sheet transport rollers is stopped, based on the position of the sheet in the sheet transport path, performs forced moving processing in which the sheet is transported so as to forcibly move the sheet to a sheet removal position, and a forced moving processing determination unit that determines whether the forced moving processing is to be performed by the forced moving processing unit in accordance with the position of the sheet that was detected by the sheet position detection unit.Type: GrantFiled: February 7, 2012Date of Patent: November 5, 2013Assignee: Sharp Kabushiki KaishaInventor: Yoshinori Shiraishi
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Publication number: 20130287413Abstract: The present invention provides an image forming apparatus which suppresses the occurrence of the dew condensation in the post-processing operation when the sheet is jammed and prevents additional sheet jam. When information indicating that a sheet is jammed is received, if the sheet detecting sensor detects the sheet on a switching member, a controller drives rollers until an upstream edge of the sheet in the sheet conveyance direction passes through the switching member.Type: ApplicationFiled: March 15, 2013Publication date: October 31, 2013Applicant: CANON KABUSHIKI KAISHAInventor: Yuki Akamatsu
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Publication number: 20130279922Abstract: A method and apparatus for avoiding fuser jams in an image production device may include determining an entrance velocity of media entering a fuser nip during a print job, the fuser nip being the area of a fuser formed by a fuser roll meeting a pressure roll, determining an exit velocity of media exiting the fuser nip, determining a difference between the entrance velocity and the exit velocity, determining if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, wherein if the difference between the entrance velocity and the exit velocity exceeds a predetermined threshold, retracting the pressure roll away from the fuser roll for a predetermined time period, determining if the predetermined time period has expired, wherein if the predetermined time period has expired, reposition the pressure roll to meet the fuser roll to reform the fuser nip, and resuming printing the print job.Type: ApplicationFiled: April 19, 2012Publication date: October 24, 2013Applicant: XEROX CORPORATIONInventors: Erwin Ruiz, Eliud Robles Flores
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Patent number: 8561985Abstract: An image forming apparatus includes a feed unit, a sensor, a control unit, a measuring unit, and a determining unit. The feed unit 1 conveys a sheet. The sensor detects the sheet being conveyed. The control unit controls to change the force acting on the sheet from that is in normal conveyance of the sheet. The measuring unit measures a measurement value related to conveyance speed of the detected sheet with the acting force changed. The determining unit determines whether there is an indication of abnormality in conveyance of the sheet on the basis of the measurement value.Type: GrantFiled: January 14, 2011Date of Patent: October 22, 2013Assignee: Ricoh Company, LimitedInventors: Yuusuke Ishizaki, Takahisa Koike
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Publication number: 20130272725Abstract: According to embodiments, an image forming apparatus has a cassette section for holding sheets, a conveying section for conveying the sheet, an image forming section that forms the image on the sheet conveyed by the conveying section, a determining section that determines the type of the sheet fed from the cassette, and a display section that displays different messages corresponding to the type of the sheet if a jam of the sheet has occurred while the sheet is conveyed in the conveying section. The source of a sheet for printing thereon may be changed if a threshold number of paper jams occur using paper fed from a particular cassette.Type: ApplicationFiled: April 16, 2013Publication date: October 17, 2013Applicant: Toshiba Tec Kabushiki KaishaInventor: Norio TANAKA
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Publication number: 20130243447Abstract: An image forming apparatus includes a control device executing: a holding process of holding developer attached on an image carrier at a holding member; a moving process of moving the developer from the holding member to the image carrier; and a collection process of collecting the developer attached on the image carrier into a collection member. The control device executes the moving process and the collection process after completing printing. The control device sets a first flag when predetermined time period elapses from start of the moving process and unsets the first flag at start of the printing. When the first flag is not set at a startup time, the control device executes the moving process and the collection process before the printing. When the first flag is set, the control device omits the moving process before the printing.Type: ApplicationFiled: March 14, 2013Publication date: September 19, 2013Applicant: Brother Kogyo Kabushiki KaishaInventors: Kensuke Miyahara, Toshio Furukawa
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Patent number: 8532530Abstract: A fixing device fixes on a recording material a toner image formed on the recording material and includes a fixing roller, a heating member for heating the fixing roller in contact with an outer surface of the fixing roller, and a pressing member for forming a fixing nip between itself and the fixing roller. When the recording material which has been jammed so that its leading end passes through the fixing nip to reach a contact portion between the heating member and the fixing roller, a force for drawing the recording material upstream when nipped in the fixing nip is at least equal to the drawing force of the recording material, toward the upstream side with respect to the rotational direction of the fixing roller, nipped between the fixing roller in the rest state and the heating member.Type: GrantFiled: March 22, 2011Date of Patent: September 10, 2013Assignee: Canon Kabushiki KaishaInventors: Satoshi Nishida, Kenichi Ogawa, Masashi Tanaka, Shuichi Tetsuno, Shogo Kan
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Patent number: 8525045Abstract: A Faraday cage includes a casing structured by a first housing having a first outer cover made of a conductive material, and a first inner cover made of a conductive material, which is accommodated in the first outer cover and is electrically insulated from the first outer cover, and a second housing having a second outer cover made of a conductive material, which fits the first outer cover, and a second inner cover made of a conductive material, which is accommodated in the second outer cover and is electrically insulated from the second outer cover, the first and second housings being separable from each other; and a filter cartridge disposed inside the casing configured to be separable into two pieces, which accommodates therein a first filter for collecting fine particles sucked in from the outside the casing.Type: GrantFiled: June 24, 2009Date of Patent: September 3, 2013Assignee: U-TEC CorporationInventors: Chiseki Yamaguchi, Naoya Hamada, Shunsuke Umezawa, Takuo Wariishi, Tomohiro Kamitani, Naoki Moribe
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Patent number: 8520249Abstract: A procedure through which a device is started up when power is introduced is fixed. Consequently, if there is a job that has been suspended owing to cut-off of power the length of time from re-introduction of power to resumption of the suspended job is too long. In order to solve this problem, an image processing apparatus, which enables execution of a plurality of jobs by starting up a plurality of software modules, is so adapted that in a case where a job being executed is suspended, execution information indicating status of execution of the job at the time of suspension is stored. The suspended job is resumed based on the execution information. Specifically, in resuming the suspended job, a group of software modules relating to the suspended job is started up before other software modules.Type: GrantFiled: May 21, 2007Date of Patent: August 27, 2013Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Muto, Tomoaki Osada
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Publication number: 20130209113Abstract: A printing apparatus notifies a user of a message that jamming may be attributed to a protective member yet to be removed, without providing any sensor for detecting the protective member. A method for controlling a printing apparatus that conveys a sheet includes detecting sheet jamming, determining a number of discharged sheets, and notifying the user to remove the protective member present on a conveyance path if the sheet jamming is detected and the number of discharged sheets is determined to be less than a predetermined number, and notifying the user of the sheet jamming if the sheet jamming is detected and the number of discharged sheets is determined to be equal to or greater than the predetermined number.Type: ApplicationFiled: February 12, 2013Publication date: August 15, 2013Applicant: CANON KABUSHIKI KAISHAInventor: CANON KABUSHIKI KAISHA
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Patent number: 8503923Abstract: An image recording apparatus includes a particular tray, a sheet feeder configured to feed a sheet from the particular tray to a first conveying path in a feed direction, a recording unit positioned along the first conveying path, and a driving roller positioned along a second conveying path and configured to convey the sheet, after the sheet passes the recording unit, along the second conveying path and back to the first conveying path. The particular tray includes a side guide configured to position the sheets in a widthwise direction perpendicular to the feeding direction. The side guide includes a guide member that defines at least a portion of the second conveying path and is configured to guide the sheet along the second conveying path, and a driven roller rotatably supported on the guide member and configured to pinch the sheet against the driving roller as the sheet is conveyed along the second conveying path.Type: GrantFiled: September 15, 2009Date of Patent: August 6, 2013Assignee: Brother Kogyo Kabushiki KaishaInventors: Tetsuo Asada, Naokazu Tanahashi, Shota Iijima, Masatoshi Izuchi, Satoru Nakakita
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Publication number: 20130195474Abstract: An image-forming apparatus includes an image formation section, a placement unit, a paper feed rotating body, a detecting body, a storage unit, and a determination unit. The detecting body detects the arrival of the paper having been supplied by the paper feed rotating body. The storage unit stores measurement data that is based on a measurement time from the start of paper feeding until when the detecting body detects the arrival. The determination unit finds the average time of the measurement times and, when the average time is longer than a predetermined theoretical time, establishes as the paper-non-feed jam detection time a time obtained by adding the absolute value of the time difference between the theoretical time and the average time to a detection reference time. The determination unit determines whether or not a paper-non-feed jam has occurred with the paper-non-feed jam detection time.Type: ApplicationFiled: January 30, 2013Publication date: August 1, 2013Applicant: KYOCERA DOCUMENT SOLUTIONS INC.Inventor: Kyocera Document Solutions Inc.
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Patent number: 8490968Abstract: When a trailing edge detection sensor is affected by toner, dust, etc. adhered on an optical path thereof or when the sensor fails, malfunction of the apparatus is prevented from happening by measuring the size of a record material only with a unit for detecting a leading edge. The image forming apparatus has a unit for leading edge detection adapted to detect the leading edge of the record material and a unit for trailing edge detection adapted to detect the trailing edge of the record material, and is configured to, when the unit for trailing edge detection falls in detection capability or fails, form an image and measure the size of the record material only with the unit for leading edge detection.Type: GrantFiled: July 26, 2007Date of Patent: July 23, 2013Assignee: Canon Kabushiki KaishaInventor: Yoshitaka Kokubo
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Patent number: 8472053Abstract: An electronic device includes a display unit that displays operation information about a user's operation procedure; a communication unit that performs communication with a mobile terminal device; and a transmission unit that transmits, in case that a predetermined operation information is to be displayed on the display unit, image data for displaying the predetermined operation information to the mobile terminal device via the communication unit.Type: GrantFiled: November 11, 2009Date of Patent: June 25, 2013Assignee: Fuji Xerox Co., Ltd.Inventor: Takashi Aoki
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Publication number: 20130148988Abstract: A recording material conveying device includes a stripping claw being in contact with one rotary body of a first pair of rotary bodies, and a supporting member supporting a recording material curved when a jam occurs. The supporting member includes a supporting section located more away from the stripping claw than an imaginary straight line (C) passing a nip portion of the first pair of rotary bodies and a surface on a conveying path's side of the stripping claw, and the supporting section supports the recording material curved when the jam occurs. The recording material conveying device further includes a conveyance guide that is disposed on the downstream side from the supporting member and is displaced toward a pressed direction by a pressing force acting when the curved recording material comes into contact with the conveyance guide.Type: ApplicationFiled: May 26, 2011Publication date: June 13, 2013Applicant: SHARP KABUSHIKI KAISHAInventor: Susumu Murakami
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Publication number: 20130142526Abstract: In an image forming apparatus provided with a detachable fixing unit having fixing paired-rollers, a heating unit heats at least one of the fixing paired-rollers, and a temperature detecting unit detects a temperature of the detachable fixing unit. The image forming apparatus is further provided with an adjustment mechanism for preventing the detachable fixing unit from being taken out from the apparatus body, when the temperature detecting unit determines that the temperature of the detachable fixing unit exceeds a predetermined value, and allowing the detachable fixing unit to be taken out from the apparatus body, when the temperature detecting unit determines that the temperature of the detachable fixing unit is the predetermined value or less, whereby protecting users from getting their hands burned when taking out the detachable fixing unit from the apparatus body.Type: ApplicationFiled: December 5, 2012Publication date: June 6, 2013Applicants: CASIO COMPUTER CO., LTD., CASIO ELECTRONICS MANUFACTURING CO., LTD.Inventors: CASIO ELECTRONICS MANUFACTURING CO., L, CASIO COMPUTER CO., LTD
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Patent number: 8452197Abstract: An image forming device includes a changeover flap, a cover, a flap displacement mechanism, an inlet end, an outlet end, and a first conveyer passage extending from the outlet end. A second conveyer passage is bifurcated from the first conveyer passage at a bifurcated portion. The changeover flap is provided at the bifurcated portion and is pivotally movable. The flap displacement mechanism includes a pivot arm pivotally movable. The pivot arm includes a free end portion provided with a linking portion to which the changeover flap is pivotally movably connected. The pivot arm and the changeover flap is configured to change an angle therebetween in accordance with a pivotal movement of the changeover flap and the pivot arm in interlocking relation to the pivotal movement of the cover from its closed position to its open position to displace the linking portion toward the cover.Type: GrantFiled: February 22, 2010Date of Patent: May 28, 2013Assignee: Banner & Witcoff, Ltd.Inventor: Yoshiya Tomatsu
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Publication number: 20130129364Abstract: An image heating apparatus includes a heating roller; a nip forming member for forming the nip with the roller; a sheet jam sensor; a first controller for interrupting a heating operation when the sensor detects the sheet jamming, and for resuming the heating operation after the jamming is cleared; a rubbing member for rubbing a heating roller surface; a moving mechanism for moving the rubbing member to a position for spacing the rubbing member from the roller to a position for rubbing the roller surface; and a second controller for executing an operation of moving the rubbing member to the rubbing position to rub the heating roller surface when a predetermined condition is reached, wherein the second controller delays, when the condition is reached during a period in which a predetermined count of sheets pass the nip after the jam clearance, the moving operation to after the period.Type: ApplicationFiled: November 15, 2012Publication date: May 23, 2013Applicant: CANON KABUSHIKI KAISHAInventor: CANON KABUSHIKI KAISHA
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Patent number: 8446613Abstract: An information processing apparatus capable of communicating with a printing device includes an input unit for inputting a search condition for searching for a desired printing device, a display unit for displaying at least one printing device that satisfies the search condition, a selection unit for selecting a printing device from the at least one printing device displayed by the display unit, and a setting unit for setting the search condition input by the input unit as a printing setting for the printing device selected by the selection unit in accordance with selection of the printing device by the selection unit.Type: GrantFiled: February 3, 2005Date of Patent: May 21, 2013Assignee: Canon Kabushiki KaishaInventor: Yasuhiro Kujirai
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Publication number: 20130121708Abstract: An image forming apparatus includes a main body; a scanning unit disposed above the main body to be opened and closed; a paper discharging cover which is disposed on a top end of the main body below the scanning unit to open and close an opening formed on the main body and printing media are stacked; a fusing unit that is disposed behind the paper discharging cover inside the main body and includes a pressing roller and a heating roller; a first cover that is disposed above the fusing unit and guides a printing medium passed through between the pressing roller and the heating roller to the paper discharging cover; and a second cover disposed above the first cover to cover the first cover. When the second cover is opened and closed, the pressing roller and the heating roller are separated from and in contact with each other.Type: ApplicationFiled: August 14, 2012Publication date: May 16, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Jae-seok YOO
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Patent number: 8442421Abstract: A conveying path switching structure includes a cover unit and a conveying path switch unit. The cover unit is attached to an image forming apparatus main body so as to be movable between a close state and an open state in which a fixing unit is exposed. The conveying path switch unit is rotatably attached to the cover unit and that switches a conveying path of a record medium between a discharge conveying path and a double-side conveying path. The discharge conveying path is a path where the record medium is conveyed from a discharge part of the fixing unit to a discharge unit that discharges the record medium to outside of the image forming apparatus main body in a close state. The double-side conveying path is a path where the record medium is conveyed again to an image forming unit.Type: GrantFiled: January 13, 2010Date of Patent: May 14, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Yukihiro Ichiki, Yasuki Tanaka, Satoshi Isahai
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Publication number: 20130108284Abstract: An image forming apparatus includes a paper transfer path through which a sheet of paper is to be transferred, a transfer unit (for example, transfer rollers) to reciprocatably transfer the sheet of paper through the paper transfer path, a housing door openable to expose the paper transfer path, an open-close sensor to detect whether the housing door is open or closed, a paper sensor disposed along the paper transfer path to detect a position of the sheet of paper, and a paper jam determination unit to determine whether a paper jam has occurred in the paper transfer path based on a result of detection by the paper sensor. When the paper jam determination unit determines that a paper jam has occurred and when the housing door is opened, the transfer unit transfers the sheet of paper in a reverse direction.Type: ApplicationFiled: November 1, 2012Publication date: May 2, 2013Applicant: Sharp Kabushiki KaishaInventor: Sharp Kabushiki Kaisha