With Means To Vary Speed Of Conveyor Sheet Patents (Class 271/270)
  • Patent number: 10961068
    Abstract: A sheet conveying apparatus includes: a plurality of driving parts each connected to one end of corresponding one of a respective plurality of rotating shafts; a first torque adjuster connected to another end of each of the plurality of rotating shafts, the first torque adjuster applying first torque to the plurality of driving parts; a second torque adjuster that applies, to the driving parts, second torque for adjusting the first torque to be applied to the driving parts by the first torque adjuster; and a hardware processor that controls the second torque to be applied to the driving parts in the second torque adjuster in accordance with a number of revolutions of the driving part.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: March 30, 2021
    Assignee: Konica Minolta, Inc.
    Inventors: Satoshi Miyajima, Takanobu Shiki, Tadayuki Ueda, Hiroshi Oyama, Remi Ishikawa
  • Patent number: 10947073
    Abstract: In some examples, velocity and torque based media motor control may include ascertaining a velocity and torque for a feed roller motor associated with a feed roller, and ascertaining a velocity and torque for a drive roller motor associated with a drive roller that is to receive media from the feed roller. Further, velocity and torque based media motor control may include determining whether the torque for the drive roller motor is greater than a torque target. In response to a determination that the torque for the drive roller motor is greater than the torque target, the torque for the drive roller motor may be reduced to the torque target, and the torque for the drive roller motor may be maintained at the torque target.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: March 16, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Daniel James Magnusson, Ian Patrick Anderson, Joseph C O'Banion, Devin Scott Uehling, Alan Shibata, Saurabh Shripad Bhide, Stuart Scofield
  • Patent number: 10944810
    Abstract: A system includes a device and one or more information processing apparatuses. The device includes a device-information generator configured to generate device information on the device; and an analyzer determining unit configured to determine any one of the device and the one or more information processing apparatuses as an analyzer for the device information. The one determined as the analyzer includes an analysis unit configured to perform an analysis based on the device information; and a service determining unit configured to determine a service to the device based on a result of the analysis.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: March 9, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Kenji Ueda, Takenori Oku, Hiroshi Nishida, Satoshi Hatanaka, Takeyoshi Sekine, Yasushi Nakazato, Fumihiro Nagano, Tetsutaro Oishi, Kazuho Satoh
  • Patent number: 10677681
    Abstract: In an inspection method and apparatus, when an infrared (IR) image is obtained by using an IR camera and thermal image data corresponding to the obtained IR image is stored or inspected, confidence of the thermal image data is improved.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: June 9, 2020
    Assignee: COGLIX CO. LTD.
    Inventors: Seoung Je Jo, Jae Hun Park, Boo Han Lee
  • Patent number: 9428357
    Abstract: A conveying device and a conveying control method that can control a phase of a main conveying roller and a position of a print medium with an inexpensive configuration and a fast throughput are provided. For that purpose, an LF roller phase is obtained, phase matching control is performed so that the print medium comes to a desired position when the LF roller is at a desired phase, and skewing of the print medium is corrected by the same control method as the phase matching control.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: August 30, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideyuki Terashima
  • Patent number: 9272866
    Abstract: Provided is a conveyance device that includes: a conveyance unit configured to convey a conveyance object; a motor configured to drive the conveyance unit; a sensor configured to detect a position of the conveyance object; an instruction unit configured to generate an instruction signal for conveying the conveyance object to a target position; and a control unit configured to control the motor by performing a speed feedback control and control the motor so as to cancel a delay between a time when the position of the conveyance object is detected and a time when the speed feedback control is reflected on the motor.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: March 1, 2016
    Assignee: Ricoh Company, Limited
    Inventors: Natsuko Ishizuka, Tatsuya Watahiki
  • Patent number: 9150037
    Abstract: An individual sheet overlapping mechanism includes holding cylinders having paper edge holding mechanisms capable of holding a front edge portion in a conveying direction of a first individual sheet and that are provided rotatably along the conveying direction of the first individual sheet. The holding cylinders are configured to wrap the first individual sheet that has reached the holding cylinders around the holding cylinders by the paper edge holding mechanisms, release the first individual sheet at a timing when a second individual sheet has reached the holding cylinders, and stack the first individual sheet on the second individual sheet.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: October 6, 2015
    Assignee: Kabushiki Kaisha Tokyo Kikai Seisakusho
    Inventor: Takanori Anzai
  • Patent number: 9102173
    Abstract: A print processing apparatus processes a print job that includes print data corresponding to a plurality of pages and first paper information relating to papers used in printing of the print data. The microprocessor unit sets second paper information relating to a paper stacking order of a paper stack including a plurality of types of papers placed in a mixed state in one paper feeding tray. Then, the microprocessor unit compares the first paper information with the second paper information. The microprocessor unit controls the printer based on an obtained comparison result so that the print data can be printed on a target paper on which the print data should be printed, and controls the printer based on the obtained comparison result so that any surplus paper other than papers that are necessary and sufficient can be separated from papers on which the print data has been printed.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: August 11, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshinobu Umeda
  • Patent number: 9062963
    Abstract: Thickness measurement apparatuses 1 and 2 are set a preset distance Ld from each other. The first apparatus 1 performs calibration using a thickness reference plate 5c. While the second apparatus 2, placed on a downstream side in a conveying direction, is performing measurement process, mode setter 3 sets “measurement” for the first apparatus 1. Mode setter 3 further gives an instruction to start a “thickness correction” process to the second apparatus 2. Mode setter 3 delays a first thickness measurement value 1 until a position corresponding to the distance is reached in a traveling distance, determines the difference between the first value 1 and a second thickness measurement value 2 from the second apparatus 2 as a correction value, and executes thickness correction without halting the measurement performed by the second apparatus 2.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: June 23, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsuo Furuta, Teruo Ishizuka
  • Publication number: 20150145202
    Abstract: A stepping motor control device includes a driving IC driving a stepping motor by PWM control, and a setting circuit for setting PWM frequency of the driving IC. The setting circuit sets the driving IC such that in stepping motor accelerating and decelerating periods, the PWM frequency of the driving IC becomes higher than the PWM frequency of the driving IC in a constant-speed period of the stepping motor. Thus, power loss of the driving IC in the stepping motor accelerating and decelerating periods can be reduced, and ripple current can be reduced.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 28, 2015
    Inventor: Tamaki MASHIBA
  • Patent number: 8998203
    Abstract: A sheet take-out apparatus includes a first separation unit, a second separation unit, a drawing roller for drawing sheets from a nip of the second separation unit, and a pinch roller rotating in contact with it. Overlapping sheets which pass the first and second separation units and are not separated are detected to be overlapped in a state that they are clamped by the nip of the drawing roller and pinch roller. When overlapping is detected, in a state that the rear ends of the overlapping sheets in the conveying direction are restricted by the nip, the drawing roller and pinch roller are stopped and the overlapping sheets are re-separated.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: April 7, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yusuke Mitsuya, Yukio Asari
  • Patent number: 8998200
    Abstract: A medium feeding device includes a feeding roller that conveys a medium in a conveying direction, and a brake roller that includes rollers that are arranged to be rotatable around one shaft and cause a conveyance load to act on the medium that has entered between the feeding roller and the rollers. The rollers are arranged to press the feeding roller with a predetermined pressure. The medium feeding device further includes a rotational difference generating unit that generates a rotational difference between the rollers so that the conveyance load acting on the medium by the rollers becomes even.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: April 7, 2015
    Assignee: PFU Limited
    Inventor: Satoru Moto
  • Patent number: 8991821
    Abstract: In an image reading apparatus, it is judged whether an original sheet is a first sheet type, whose sheet length is longer than or equal to a first conveyance distance and shorter than a second conveyance distance, and a second sheet type, whose sheet length is longer than or equal to the second conveyance path, the first conveyance distance being a distance between a first conveyance roller and a second conveyance roller, the second conveyance distance being a distance between a supply roller and the second conveyance roller. At least one of a leading-edge arriving timing; a trailing-edge arriving timing; and a sub-scanning magnification is set dependently on the judged result. An image is read from the original sheet by using an image reading unit and a conveyance unit based on the set at least one of the leading-edge arriving timing; trailing-edge arriving timing; and sub-scanning magnification.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: March 31, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Masayoshi Oosaki, Takashi Maeda, Muneaki Takahata, Yoshinori Osakabe
  • Patent number: 8985579
    Abstract: A paper feeding device includes a lower housing, an upper housing, a pickup assembly, a separation assembly, a relay assembly, a paper friction mechanism, an elastic element, a paper speed detector, a first paper feeding assembly, a second paper feeding assembly, a transmission assembly, a motor and a control unit. The control unit controls the paper speed detector to detect paper feeding speeds and the paper speed detector sends signals to the control unit for determining paper feeding conditions. The control unit controls the motor to rotate, and the motor drives the pickup assembly, the relay assembly and the first paper feeding assembly to rotate by virtue of the transmission assembly, and the first paper feeding assembly drives the second paper feeding assembly to rotate, the control unit is capable of adjusting rotating speeds of the motor, so that the paper feeding speeds are stabilized.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: March 24, 2015
    Assignee: Foxlink Image Technology Co., Ltd
    Inventors: Chun Chia Juan, Te You Chu
  • Publication number: 20150061217
    Abstract: An image forming apparatus can exchange a sound reduction mode and a normal mode. The image forming apparatus includes a sound reduction sheet feed cassette, a normal sheet feed cassette, a sound reduction sheet feed cassette roller, and a normal sheet feed cassette roller. The sound reduction sheet feed cassette roller and the normal sheet feed cassette roller can exchange rotation speed to a slower speed than a normal paper feeding speed, In the sound reduction mode, the image forming apparatus performs one of a noise reduction high performance mode and a noise reduction low performance mode. In the normal mode, the image forming apparatus performs a high performance mode.
    Type: Application
    Filed: August 30, 2014
    Publication date: March 5, 2015
    Inventors: Koji Minakuchi, Daiki Sone
  • Publication number: 20150054219
    Abstract: Provided is a transporting device including a first contact member having a first contact portion that contacts a medium transported, a second contact member having a second contact portion that contacts the medium transported, on the downstream side of the first contact portion in a transporting direction, the first contact portion and the second contact portion each having a tangential plane, and the tangential planes coinciding with each other, a transporting unit that transports the medium so that a first surface of the medium coincides with the tangential plane in a section of the first contact portion to the second contact portion, and a processing unit that is arranged between the first contact portion and the second contact portion, and performs processing on the first surface of the medium that is passing through a processing region.
    Type: Application
    Filed: February 25, 2014
    Publication date: February 26, 2015
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Seigo MAKIDA, Takao FURUYA, Kiyoshi HOSOI, Katsumi SAKAMAKI, Masaki HACHISUGA
  • Patent number: 8960665
    Abstract: A sheet conveyance apparatus includes a first conveyance roller configured to convey a sheet, a second conveyance roller configured to convey the sheet at a variable speed ranging from a first sheet conveyance speed to a second sheet conveyance speed wherein the first sheet conveyance speed is less than a sheet conveyance speed of the first conveyance roller and the second sheet conveyance speed is greater than the sheet conveyance speed of the first conveyance roller, a driving unit configured to drive the second conveyance roller, and a control unit configured to control the driving unit.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: February 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yutaka Nishimura
  • Patent number: 8955841
    Abstract: An actual sheet interval from a preceding sheet to a succeeding sheet is detected by a top sensor. A registration roller is accelerated or decelerated such that the sheet interval from the preceding sheet to the succeeding sheet is an ideal value by the time that the leading edge of the succeeding sheet reaches a transfer nip part. Note that a time period during which acceleration or deceleration is applied and a sub-scan synchronization signal output timing are determined from the actual sheet interval. Note that a recording sheet P does not stop at the registration roller.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: February 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroto Endo
  • Publication number: 20150042033
    Abstract: A variable speed unit is driven by a drive unit to make a tooth-missing large gear of a sheet feed tooth-missing stage gear mesh with a small gear of an input stage gear rotating at a constant speed, to then rotate a rotating shaft of the feeding roller and a cam at a first speed to lift an intermediate plate. If a sheet stacked on the intermediate plate is pressed against the feeding roller, the variable speed unit makes a large gear of the input stage gear and a tooth-missing small gear of the sheet feed tooth-missing stage gear mesh with each other, so that the rotating shaft of the feeding roller is rotated at a second speed faster than the first speed to rotate the feeding roller at a fast speed.
    Type: Application
    Filed: March 29, 2013
    Publication date: February 12, 2015
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Taku Fukita, Akira Kuroda, Yoshiyuki Yamazaki, Noritomo Yamaguchi
  • Patent number: 8950749
    Abstract: In an image reading apparatus, it is judged whether an original sheet is either one of a first sheet type, whose sheet length is longer than or equal to a first conveyance distance and shorter than a second conveyance distance, and a second sheet type, whose sheet length is longer than or equal to the second conveyance path, the first conveyance distance being distance between a first conveyance roller and a second conveyance roller, the second conveyance distance being distance between a supply roller and the second conveyance roller. The original sheet is conveyed at a separation timing, when the original sheet separates away from the supply roller, at a speed that is smaller for a case where the original sheet is of the first sheet type than for a case where the original sheet is of the second sheet type. An image is read from the conveyed original sheet.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: February 10, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takashi Maeda, Muneaki Takahata, Yoshinori Osakabe, Masayoshi Oosaki
  • Publication number: 20150021846
    Abstract: Provided are a device and method for controlling a paper interval in a paper feeder of an image forming apparatus, and an image forming apparatus including the device. The device includes: a leading edge sensor configured to detect a leading edge of a sheet of paper when the sheet of paper is picked up and fed as a printing medium; a feed unit configured to accelerate the sheet of paper; and a control unit. If the sheet of paper arrives late at a paper sensing position of the leading edge sensor, the control unit measures a travel time during which the sheet of paper is fed to the paper sensing position, and according to the measured travel time, the control unit varies a time point at which the sheet of paper starts to be accelerated.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 22, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-bok Lee, Sang-cheol Kim, Taiichi Ominami, Jin-soo Lee
  • Patent number: 8936242
    Abstract: A re-time sheet buffering system is used in connection with a finisher for a digital printing system and a plurality of media sheets arranged in sets. A path loop between a sheet path entrance and exit provides space for buffering. A registration nip decelerates, registers and accelerates sheets 1 through N. A first retime nip holds sheets 1 and 2 of the set at registration speed for a longer time than remaining sheets, to gain time for finishing, and then accelerates sheets 1 and 2. A second retime nip accelerates sheets 1 and 2 of the set to compiling speed. Sheets are transported, compiled, stapled, and ejected.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: January 20, 2015
    Assignee: Xerox Corporation
    Inventors: Joseph M. Ferrara, Joseph J. Ferrara
  • Publication number: 20150014914
    Abstract: Provided are an auto document feeder (ADF), a scanner including the ADF, and a method of controlling auto document feeding. The ADF includes: a feed unit picking up a sheet of paper and carrying the sheet of paper to a scan unit; a feed control unit controlling the feed unit; and a retry control unit. If a sheet of paper is not normally picked up by the feed unit, the retry control unit decreases a speed of a motor driving the feed unit or increases a current supplied to the motor for picking up the sheet of paper. Therefore, although sheets of paper are not normally fed when a user intends to use various kinds of sheets of paper with the ADF, the retry control unit may stabilize feeding of the feeding of the sheets of paper. Thus, efficient, convenient, and high-quality paper feeding may be possible.
    Type: Application
    Filed: July 14, 2014
    Publication date: January 15, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventor: Byung-jun SUNG
  • Patent number: 8925918
    Abstract: A conveying apparatus has a first conveying roller pair; a second conveying roller pair; a first conveying path through which a sheet is conveyed in such a manner that the first conveying roller pair is placed downstream of the second conveying roller pair; and a second conveying path through which the sheet is conveyed in such a manner that the first conveying roller pair is placed upstream of the second conveying roller path. A circumferential velocity of at least one of the first conveying roller pair and the second conveying roller pair is switched so as to meet conditions, i.e., |Va|>|Vb| when the sheet is conveyed through the first conveying path and |Va|?|Vb| when the sheet is conveyed through the second conveying path. Here, |Va| is an absolute value of the circumferential velocity of the first conveying roller pair, and |Vb| is an absolute value of the circumferential velocity of the second conveying roller pair.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: January 6, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takahiro Kiuchi
  • Patent number: 8899581
    Abstract: An image processing apparatus includes: a transport roller for transporting a sheet subjected to image processing; a motor that drives the transport roller to rotate; and a speed reduction unit that performs a speed reduction control on the motor to temporarily stop the sheet, the speed reduction control being performed in a manner that a stopping time and a stopping distance each satisfy a corresponding target range, wherein the speed reduction control includes: a first control that is a control of reducing a rotation speed of the motor to a reference speed through at least two operations from among a braking operation, a powering operation, and a free running operation; and a second control that is a control of, after a rotation amount of the motor from the start of the speed reduction control reaches a reference value, continuously performing the braking operation until the stop of the motor.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: December 2, 2014
    Assignee: Konica Minolta, Inc.
    Inventors: Hiroshi Yamaguchi, Takaki Kato, Yuta Tachibana, Yuji Kobayashi, Satoshi Teshima
  • Patent number: 8899571
    Abstract: A sheet-through document reading apparatus including: a document tray for containing a plurality of documents; a determination unit that determines a length of a document on the document tray; a feed unit that separates and feeds a document on the document tray; a resist convey unit that performs consistency processing on the document fed by the feed unit; a first drive unit that rotationally drives the resist convey unit; a read convey unit that feeds the document subjected to consistency processing by the resist convey unit; a second drive unit that rotationally drives the read convey unit; a reading unit that reads, at a fixed reading position, the document conveyed by the read convey unit; and a control unit for changing a relative conveying velocity between the resist convey unit and the read convey unit on the basis of a result of the determination by the determination unit.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: December 2, 2014
    Assignee: Konica Minolta, Inc.
    Inventor: Hiroshi Nishikawa
  • Patent number: 8894065
    Abstract: The present invention provide a printing apparatus and a method for conveying a sheet wherein generation of noise is minimized using a simple configuration, wherein, during sheet discharging, a sheet is discharged at a speed suitable for the sheet discharging, and wherein the sheet is aligned at a sheet discharging position. The printing apparatus controls conveyance of sheets as follows. A first sheet and a second sheet fed subsequently to the first sheet are conveyed at a relatively low conveying speed until an upstream trailing end of the first sheet is placed at a sheet discharging standby position. Then, the first sheet is discharged to the sheet discharging position, and the first sheet and the second sheet are conveyed at a relatively low conveying speed until a downstream leading end of the second sheet is placed at a sheet feeding control position.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: November 25, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuji Takayama
  • Patent number: 8888094
    Abstract: There is provided a conveying device including a controller that makes a conveying speed of a printing medium conveyed by a first conveyor unit be higher than a conveying speed of a printing medium conveyed by a second conveyor unit and makes the printing medium be conveyed while forming sagging on the printing medium between the first and second conveyor units. The controller makes a sheet sensor acquire the amount of light, which passes through the printing medium conveyed between a light emitting part and a light receiving part, as the amount of received light and determines whether or not the double-feed of the printing media has occurred only when this amount of received light is smaller than the double-feed criterion amount of received light at substantially the same conveying distance of the printing medium conveyed by the first conveyor unit.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: November 18, 2014
    Assignee: Riso Kagaku Corporation
    Inventor: Eiji Hori
  • Patent number: 8864122
    Abstract: An image recording apparatus includes: a sheet supplier configured to supply a recording medium; a first conveyor configured to convey the recording medium supplied from the sheet supplier in a conveying direction; a recording portion configured to record an image on the recording medium conveyed by the first conveyor; and a controller configured to detect an orientation of the recording medium with respect to the conveying direction while the recording medium is conveyed and change a conveying speed of the recording medium conveyed by the first conveyor depending on the detected orientation of the recording medium.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: October 21, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Akihiro Hayashi
  • Patent number: 8864132
    Abstract: Upon continuous feeding of a plurality of sheets and upon detection of a leading end of a sheet by a detection unit before an elapse of a first time after a start of a paper feed roller, a controller performs control such that a paper conveyance speed of the paper feed roller is set lower than a paper conveyance speed of a registration roller, and the paper feed roller is stopped after conveying the sheet having the leading end detected for a specified conveyance distance before a next timing of starting the registration roller.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: October 21, 2014
    Assignee: Riso Kagaku Corporation
    Inventor: Akihiro Yamagata
  • Patent number: 8851473
    Abstract: A sheet medium separating mechanism and a control method and a control system thereof. When the head part of a currently separated medium reaches the front boundary of a preset speed regulating region in front of a money distributing wheel (111) and the tail part of the currently separated medium leaves the back boundary of a preset speed regulating region on the money distributing wheel, relative speeds of a money distributing wheel motor (122) and a back money distributing power wheel motor (120) are regulated, so that a preset medium separating distance is kept between the tail part of the currently separated medium and the head part of a next separated medium. Therefore, the sheet medium separating mechanism is adapted to sheet media of different shapes and different specifications, the money distributing wheel size and rotary inertia of longitudinal deposit equipment are reduced, and the motor load is effectively lowered.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: October 7, 2014
    Assignee: GRG Banking Equipment Co., Ltd.
    Inventors: Zhongwu Lai, Fazhi Yin, Zhiqiang Sun
  • Patent number: 8833760
    Abstract: An image processing apparatus includes: a motor for driving a first rotary body and a second rotary body that rotates according to an image processing operation; a switching unit that switches a connection/disconnection of the motor and the second rotary body; and a control unit that performs: a constant-speed rotation process of rotating the motor at a first speed in the connection state; a disconnecting process of performing switching to the disconnection state during the constant-speed rotation process; a decelerating process of decelerating the motor to a second speed after the disconnecting process; and a connecting process of performing, before completion of the decelerating process, switching to the connection state when the rotating speed of the second rotary body at a timing when the decelerating process is performed is slower than that at a timing when the switching to the disconnection state is performed in the disconnecting process.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: September 16, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takashi Suzuki, Tetsuya Okano
  • Patent number: 8838267
    Abstract: In a computer-controlled conveying system (3), virtual markers (K1-K10) are generated and are stored in association with a conveying element (31, 32, 33, 34). The virtual markers (K1-K10) each comprise a marker position which is based on the current position of the conveying element (31, 32, 33, 34) at the time of generation. A search is carried out for stored virtual markers (K1, K5, K6, K9) which have a relative position with respect to the associated conveying element (31, 32, 33, 34) that lies within a defined sector (T1, T2, T3) at the search time. Actuators of the conveying system (3) are driven depending on whether virtual markers (K1, K5, K6, K9) were found in the defined sector (T1, T2, T3) during searching. The virtual markers (K1-K10) may be applied to the conveying elements (31, 32, 33, 34) with dynamically changing distances, for example, and make it possible to drive actuators in a flexible manner independently of a fixedly defined clock rate.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: September 16, 2014
    Assignee: Ferag AG
    Inventor: Rudolf Gallati
  • Patent number: 8827258
    Abstract: A recording medium transport device includes a connecting member that connects two transport roller pairs, and a drive switching section that is provided to one of the two transport roller pairs, and switches between a state in which a rotational drive force is transmitted between the two transport roller pairs via the connecting member and a state in which the rotational drive force is not transmitted between the two transport roller pairs. A controller of the recording medium transport device causes the drive switching section to switch from the state in which the rotational drive force is not transmitted between the two transport roller pairs to the state in which the rotational drive force is transmitted between the two transport roller pairs via the connecting member, when the rotational speed of at least one of the transport roller pairs falls outside a predetermined speed range.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: September 9, 2014
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Masafumi Miki
  • Publication number: 20140239585
    Abstract: A trimmer is provided. The trimmer includes an infeed for transporting a sheet material article at a first speed, a trimming station transporter for decelerating the sheet material article for trimming by a trimmer, and a decelerator between the infeed and the trimming station transporter. The decelerator forms a deceleration nip for transferring the sheet material article from the infeed to the trimming station transporter. A method of operating a trimmer is also provided.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Applicant: Goss International Americas, Inc.
    Inventors: Louis John Doucet, Glenn Alan Guaraldi
  • Patent number: 8814163
    Abstract: A paper feeder includes a resist roller configured to convey a sheet to an image formation unit, a paper feed roller configured to convey a sheet to the resist roller, and a controller configured to control the paper feed roller such that the paper feed roller first conveys a sheet at a first conveying speed and then conveys the sheet while decelerating from the first conveying speed to a second conveying speed slower than the first conveying speed. The controller sets the first and second conveying speeds in advance to speeds which allow the paper feed roller to convey a single sheet by a predetermined conveying amount in a predetermined driving time period. The controller determines a time point to start a deceleration from the first conveying speed to the second conveying speed to allow a sheet to hit the resist roller at the second conveying speed.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: August 26, 2014
    Assignee: Riso Kagaku Corporation
    Inventor: Akihiro Yamagata
  • Patent number: 8807561
    Abstract: There are provided a paper conveying apparatus, a jam detection method and a computer-readable, non-transitory medium which can precisely determine any occurrence of a jam by a sound regardless of the conveyance speed of the paper. The paper conveying apparatus includes a sound signal generator for generating a sound signal corresponding to a sound generated by a paper during conveyance of the paper, a corrected signal generator for correcting the sound signal to generate a corrected signal, and a sound jam detector for determining whether a jam has occurred based on the corrected signal, wherein the corrected signal generator sets a method of correcting the sound signal in accordance with conveyance speed information.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: August 19, 2014
    Assignee: PFU Limited
    Inventors: Masanobu Hongo, Takayuki Umi
  • Patent number: 8794625
    Abstract: A sheet supply device includes registration rollers for feeding a print sheet to a print unit, feed rollers for feeding a print sheet to the registration rollers, and a controller for controlling the registration rollers and the feed rollers. The controller starts first rotation of the feed rollers to contact a leading edge of the print sheet to the registration rollers to form a slack with a predetermined slack amount, stops the first rotation after the slack is formed, starts rotation of the registration rollers after the first rotation is stopped to reduce a slack amount of the slack, and starts second rotation of the feed rollers after the rotation of the registration rollers is started so as to make the slack remained until a trailing edge of the print sheet passes through the feed rollers. According to the sheet supply device, noises during feeding print sheets can be reduced.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: August 5, 2014
    Assignee: Riso Kagaku Corporation
    Inventor: Akihiro Yamagata
  • Patent number: 8752834
    Abstract: An image forming apparatus includes a fixing device including a pair of first rotating members; a first transport path having a curved portion where a recording medium is curved, the first transport path being for transporting the recording medium to which the image is fixed by the pair of first rotating members; a first transporting section including a pair of second rotating members provided downstream from the curved portion of the first transport path; and a controller that controls so that, while the recording medium is interposed between the pair of first rotating members and the pair of second rotating members, a peripheral velocity of the second rotating members and a peripheral velocity of the first rotating members are reduced at the same time, or the peripheral velocity of the second rotating members is reduced before reducing the peripheral velocity of the first rotating members.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: June 17, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Naohito Otsuki, Yoshinori Koike, Shouichi Maeda, Junichi Asaoka
  • Patent number: 8731453
    Abstract: An image forming apparatus includes: an intermediate transfer member onto which a image is primarily transferred from an image forming unit; a transfer unit to secondarily transfer the image from the intermediate transfer member to a media at a secondary-transfer position; a conveying unit configured to convey the media to the secondary-transfer position; and a conveying speed controller to control a speed of conveying the media. The conveying unit includes a first detector and a second detector downstream the first detector and upstream the secondary-transfer position. Based on a detection of the media by the first detector and a timing at which the image forming unit forms the image, the conveying speed controller changes the conveying speed until the second detector detects the media and changes, after the second detector detects the media, the conveying speed to a speed substantially the same as the intermediate transfer member speed.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: May 20, 2014
    Assignee: Oki Data Corporation
    Inventor: Hiroyuki Inoue
  • Patent number: 8695975
    Abstract: A jam-processing assisting device that performs a jam removal process for removing a sheet jammed at a carriage roller by rotating the carriage roller includes: a motor that drives the carriage roller to rotate; a rotation-direction detecting unit that detects a direction of rotation in which the motor is required to rotate for removing a jam; and a motor-driving controlling unit that drives the motor to rotate in the direction that has been detected. The rotation-direction detecting unit determines, based on a detection of a pulling-out direction in which the jammed sheet is pulled by an external force, the pulling-out direction that has been detected as the direction of rotation of the motor and drives the motor in the direction that has been determined.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: April 15, 2014
    Assignee: Ricoh Company, Limited
    Inventor: Takeo Seki
  • Patent number: 8678379
    Abstract: A method for feeding sheets to a printing technology machine improves reliability of feeding sheets and reduces an acceleration time from a base speed to a production speed. The sheets are conveyed onto a feed table in shingled formation by a first drive and are individually and successively conveyed from the feed table to a first processing station of the machine by a second drive. The sheets are conveyed onto the feed table before an acceleration of the second drive to production speed is completed and the first drive is accelerated to the production speed when the processing station has reached the production speed.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: March 25, 2014
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Thomas Bechberger, Holger Edinger, Rolf Kündgen, Klaus Lulay, Burkhard Wolf
  • Patent number: 8672321
    Abstract: A method of controlling the average sheet velocities in the separate paths in a parallel architecture to prevent sheet collision and provide for sheet arrival in the proper order at the sheet merger point(s) in the media path. Modifying the travel time of the sheets, or re-phasing strategy, at various points along the media path ensure that sheet collision is avoided even at maximum capacity. Adjusting the velocity of the sheets allow for the printer to run at maximum capacity without jamming and collision of the sheets running therethrough.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: March 18, 2014
    Assignee: Xerox Corporation
    Inventor: Martin Krucinski
  • Publication number: 20140070484
    Abstract: A system includes a sheet holder configured to hold a sheet of blanks, the sheet of blanks including a first blank and a second blank attached to the first blank. A conveyor mechanism is configured to transport the sheet of blanks from the sheet holder to a separator mechanism. The separator mechanism is configured to apply a pulling force to the first blank. A resistance component is configured to apply a resistance force to the second blank to resist the pulling force. The pulling force and the resistance force are configured to separate the first blank from the second blank.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 13, 2014
    Applicant: LBP Manufacturing, Inc.
    Inventors: James A. Hubbard, JR., Stephen Alan Smith, Vicky Elizabeth Dittman, Frank A. Degliomini, Samuel Angel Valdes, Glen Powalish, Mitchell T. Cooper
  • Publication number: 20140062013
    Abstract: A sheet conveyance apparatus includes a first conveyance roller configured to convey a sheet, a second conveyance roller configured to convey the sheet at a variable speed ranging from a first sheet conveyance speed to a second sheet conveyance speed wherein the first sheet conveyance speed is less than a sheet conveyance speed of the first conveyance roller and the second sheet conveyance speed is greater than the sheet conveyance speed of the first conveyance roller, a driving unit configured to drive the second conveyance roller, and a control unit configured to control the driving unit
    Type: Application
    Filed: August 28, 2013
    Publication date: March 6, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yutaka Nishimura
  • Publication number: 20140042693
    Abstract: An actual sheet interval from a preceding sheet to a succeeding sheet is detected by a top sensor. A registration roller is accelerated or decelerated such that the sheet interval from the preceding sheet to the succeeding sheet is an ideal value by the time that the leading edge of the succeeding sheet reaches a transfer nip part. Note that a time period during which acceleration or deceleration is applied and a sub-scan synchronization signal output timing are determined from the actual sheet interval. Note that a recording sheet P does not stop at the registration roller.
    Type: Application
    Filed: July 18, 2013
    Publication date: February 13, 2014
    Inventor: Hiroto Endo
  • Patent number: 8646776
    Abstract: A reversely-rotatable roller conveys a sheet having an image formed on its one side at a sheet conveying velocity faster than that of a conveying roller by normal rotation and then, the reversely-rotatable roller conveys the sheet to a re-conveying path by reverse rotation. The sheet conveying velocity of the reversely-rotatable roller when the reversely-rotatable roller reversely rotates is made slower than the sheet conveying velocity when the reversely-rotatable roller normally rotates so that the sheet conveying velocity of the re-conveying roller is substantially equal to or slower than the sheet conveying velocity of the conveying roller.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: February 11, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Agata, Kenji Matsuzaka, Kouichi Yamada, Masatoshi Takiguchi, Ryukichi Inoue, Masahiko Suzumi, Jun Asami, Sho Taguchi
  • Patent number: 8628080
    Abstract: In a mail processing machine having a non-staging transport and a downstream staging transport for moving mailpieces, the speed of the non-staging transport is constant whereas the speed of the staging transport is controllable. In normal operation, both the staging and non-staging transports move the mailpieces downstream in the same constant speed. When a jam occurs downstream from the staging transport, the staging transport is effectively slowed down so that the staging transport can hold additional mailpieces before they arrive at the jam site during the jam clearance process. After the jam has been cleared, the staging transport is controlled in order to re-gap the mailpieces already released from the non-staging transport. After re-gapping is completed, the staging transport is sped up so that the mail processing machine is returned to its normal operation.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: January 14, 2014
    Assignee: Pitney Bowes Inc.
    Inventor: Mark S Hancock
  • Patent number: 8626051
    Abstract: The present invention provides an image forming apparatus including an upstream conveying portion, a downstream conveying portion, and a loop detector, wherein the image forming apparatus further includes a driving portion which moves the contact portion to a projecting position where the sheet conveying path is in contact with a conveyed sheet and to a retracted position where the sheet conveying path is not in contact with the conveyed sheet, and a controlling portion which controls the driving portion such that the contact portion is moved from the projecting position to the retracted position before a tip end of a sheet which enters the sheet conveying path from the upstream conveying portion reaches the contact portion.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: January 7, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kuniaki Kasuga, Daizo Fukuzawa, Noriaki Sato, Mahito Yoshioka, Munehito Kurata, Tooru Imaizumi
  • Patent number: 8596635
    Abstract: A system for conveying mailpieces along a conveyance path and singulating a mailpiece from a stack of mailpieces along the conveyance path. The system includes a first conveyance for conveying mailpieces at a variable velocity and a second conveyance, downstream of the first conveyance, for conveying mailpieces at a constant velocity along the conveyance path. A series of optical sensors extends from the first to the second conveyance and is operative to issue a gap signal indicative of the relative spacing between sequential mailpieces along the conveyance path. A processor is responsive to the gap signal and is operative to control the first conveyance to decrease the relative spacing between sequential mailpieces when the gap signal exceeds a threshold value.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: December 3, 2013
    Assignee: Pitney Bowes Inc.
    Inventors: Anthony E. Yap, Richard F. Stengl, Boris Rozenfeld, Steven J. DaCunha