Parting Agent Applicator Patents (Class 399/325)
  • Patent number: 10990037
    Abstract: A developer for a printer for printing to a substrate; the developer comprising a plurality of rollers operable to influence forming an image; the plurality of rollers comprising a developer roller for bearing printing liquid for forming the image and a squeegee roller for cooperating with the developer roller to influence the printing liquid on the developer roller, the squeegee roller being operable, via a brake, to stop rotating relative to the developer roller to influence the printing liquid on the developer roller.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: April 27, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Asaf Shoshani, Lavi Cohen
  • Patent number: 10859974
    Abstract: A sheet discharge tray includes a duct part provided at an upper side of the tray body to form a sheet discharge path communicating with the sheet discharge port and formed in the lower surface thereof with a discharge port that discharges a sheet, a suction fan provided in the duct part to suck air in the image forming apparatus body through the sheet discharge port and to discharge the air from an end part of the duct part, which is opposite to a side of the image forming apparatus body, and a deodorization filter provided in the duct part.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: December 8, 2020
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Fumito Nakamoto
  • Patent number: 10712691
    Abstract: In accordance with an embodiment, a fixing device for fixing a toner image formed on a medium to the medium comprises a heating rotating member that is rotatably supported; a heater configured to heat the heating rotating member; a pressing member arranged at the inside of the heating rotating member and configured to abut against an inner peripheral surface of the heating rotating member; a pressing rotating member configured to be pressed against the pressing member across the heating rotating member to form a nip through which the medium passes; a support member configured to movably support the pressing member in a direction orthogonal to a rotation axis of the pressing rotating member; and a lubricant supply member arranged between the support member and the pressing member and impregnated with a lubricant.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: July 14, 2020
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Sasuke Endo
  • Patent number: 10289068
    Abstract: An image formation apparatus includes: a casing; first and second heat sources disposed in the casing; a first blower blowing air toward the first heat source to cool the first heat source; and a second blower blowing air toward the second heat source to cool the second heat source. The first and second blowers are disposed to have their respective suction portions facing each other so that the air blown out via the first blower and that blown out via the second blower move away from each other. An air suction port which sucks from outside the casing the air that is blown by the first blower and an air suction port which sucks from outside the casing the air that is blown by the second blower are configured by a common air suction port.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: May 14, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Mitsuru Satou
  • Patent number: 10168650
    Abstract: A fixation device according to an embodiment includes: a belt member having a tubular shape with an inner circumferential surface and an outer circumferential surface, and provided to be rotatable; a heating member arranged to face the inner circumferential surface of the belt member; a lubricant supply device including a lubricant holding member that includes a lubricant holding portion that holds a lubricant, an outer surface, and at least one passage extending from the lubricant holding portion to the outer surface, and a lubricant pressurizing member that pressurizes the lubricant held in the lubricant holding portion; and a rotational member provided to be capable of contacting and rotating with the outer circumferential surface of the belt member.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: January 1, 2019
    Assignee: Oki Data Corporation
    Inventor: Teruo Soeda
  • Patent number: 9792209
    Abstract: Apparatus and methods are disclosed that enable the allocation of a cache portion of a memory buffer to be utilized by an on-cache function controller (OFC) to execute processing functions on “main line” data. A particular method may include receiving, at a memory buffer, a request from a memory controller for allocation of a cache portion of the memory buffer. The method may also include acquiring, by an on-cache function controller (OFC) of the memory buffer, the requested cache portion of the memory buffer. The method may further include executing, by the OFC, a processing function on data stored at the cache portion of the memory buffer.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: October 17, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Edgar R. Cordero, David M. Daly, Robert K. Montoye, Saravanan Sethuraman, Diyanesh B. Chinnakkonda Vidyapoornachary
  • Patent number: 9329535
    Abstract: A fixing apparatus includes a fixing belt, a pressure roller, a heater, a stay holder, and a scraper. The fixing belt is configured to heat an image on a sheet at a nip portion and has an inner surface with a grease applied thereon. The pressure roller drives and rotates the fixing belt and forms the nip portion between the pressure roller and the fixing belt. The heater and the stay holder press the fixing belt toward the pressure roller from the inner surface of the fixing belt. The scraper scrapes the lubricant transferred to the pressure roller in an area that can come into contact with the fixing belt and that does not come into contact with a maximum width sheet introducible into the fixing apparatus on one end side in a rotational axis direction of the pressure roller.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: May 3, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ikuo Nakamoto, Shigeru Hirano
  • Patent number: 9316978
    Abstract: A fixing device includes a fixing rotator and a pressure rotator pressed against the fixing rotator to form a fixing nip therebetween. An oil applicator is impregnated with oil to be applied to at least one of the fixing rotator and the pressure rotator. A first mover is connected to the oil applicator to separably bring the oil applicator into contact with the at least one of the fixing rotator and the pressure rotator. A surface polisher refreshes an outer circumferential surface of the fixing rotator. A second mover is connected to the surface polisher to separably bring the surface polisher into contact with the fixing rotator. The first mover brings the oil applicator into contact with the at least one of the fixing rotator and the pressure rotator according to a contact condition under which the surface polisher contacts the fixing rotator.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: April 19, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naoto Suzuki, Takashi Sakamaki
  • Patent number: 9259901
    Abstract: A peeling sheet supply unit is formed along an endless belt and is configured to supply a peeling sheet having a peeling surface on the endless belt. A first resin sheet transfer device is provided at a downstream side of the peeling sheet supply unit, and is configured to form a resin sheet by transferring a thermoplastic toner to a first region of the peeling sheet. A second resin sheet transfer device is provided at a downstream side of the first resin sheet transfer device and is configured to form a resin sheet by transferring a thermoplastic toner to a second region of the peeling sheet, the second region having a region different from a region overlapped with the first region.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: February 16, 2016
    Assignees: CASIO ELECTRONICS MANUFACTURING CO., LTD., CASIO COMPUTER CO., LTD.
    Inventors: Masaru Sato, Hisao Aihara, Satoshi Mitsui, Tomohumi Sano
  • Patent number: 9221661
    Abstract: A pressure adjuster for changing pressure between a plurality of opposed bodies pressed against each other includes a cam rotatable in a given direction of rotation and having a top dead center on an outer circumferential surface thereof that is distanced farthest from a rotation axis of the cam. A driver is connected to the cam to drive and rotate the cam. A cam rest contacts the cam and is connected to one of the plurality of opposed bodies. A cam regulation assembly is connected to the cam to regulate rotation of the cam at least when the top dead center of the cam passes a contact position where the cam contacts the cam rest.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: December 29, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryuuichi Mimbu, Takayuki Seki, Hiroshi Yoshinaga, Yuji Arai, Yutaka Ikebuchi, Yoshiki Yamaguchi, Kazuya Saito, Shuutaroh Yuasa, Shuntaro Tamaki, Toshihiko Shimokawa, Naoki Iwaya
  • Patent number: 9217968
    Abstract: In accordance with the invention, there are image forming apparatuses, fusing subsystems, and methods of making a member of the fusing subsystems. The method of making a member of a fusing subsystem can include providing a fuser member, the fuser member including a substrate and providing a dispersion including a plurality of carbon nanotubes, a stabilizer, a hydrophobic polymer, and a solvent, wherein the plurality of carbon nanotubes is selected from the group consisting of single wall carbon nanotubes and multiple wall carbon nanotubes. The method can also include applying the dispersion over the substrate to form a coated substrate and heating the coated substrate to form a hydrophobic composite coating such that a top surface of the fuser member has a water contact angle of at least about 120°.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: December 22, 2015
    Assignee: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu, Qi Zhang, Ed Zwartz, Kurt Halfyard, Brian Mcaneney, Gord Sisler
  • Publication number: 20150117921
    Abstract: A belt fuser assembly which dispenses lubricant oil or other depleted lubricant component to the inner surface of the fuser belt. The belt fuser assembly may include a lubricant dispenser positioned to be heated by the heating element of the fuser assembly for dispensing a lubricant oil to the inner surface of the fuser belt. The lubricant dispenser may include a reservoir containing the lubricant oil and an exit port for delivering the lubricant oil from the reservoir to the inner surface of the fuser belt upon the reservoir being heated by the heating element at a temperature above the fusing temperature of the belt fuser assembly.
    Type: Application
    Filed: December 31, 2014
    Publication date: April 30, 2015
    Inventors: Donald Eugene Proffitt, Fangsheng Wu
  • Patent number: 8977175
    Abstract: A fixing apparatus of the invention includes a pressure roller 6 and a fixing roller 7 that make press-contact with each other and an oil roller 8 that makes press-contact with either the pressure roller 6 or the fixing roller 7, and passes a recording sheet through a nip area between the pressure roller 6 and the fixing roller 7 to fix toner on the recording sheet. The fixing apparatus also includes: a pressure roller gear 21 and an oil roller gear 22 that transmit a rotation of a shaft of the pressure roller 6 that makes press-contact with the oil roller 8 to a shaft of the oil roller 8; and a one-way clutch 23 that causes the oil roller 8 to idly rotate in a direction of a driven rotation when the oil roller 8 is driven to rotate by pressing against the pressure roller 6.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: March 10, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaya Asakawa, Hirokazu Nakamura, Takashi Yamanaka
  • Patent number: 8934823
    Abstract: A donor roller for use in a fuser assembly of an electrophotographic printing apparatus, the donor roller includes a core; a silicone cushion surrounding the core; wherein the silicone cushion includes a surface gloss greater than 5G60 and a concave shaped surface with a diameter differential of greater than 0.3 mm.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: January 13, 2015
    Assignee: Eastman Kodak Company
    Inventors: Jerry Alan Pickering, David Francis Cahill
  • Patent number: 8855538
    Abstract: An apparatus and method are provided for cleaning a pressure roll of a fuser unit useful in printing by way of a cleaning member having a compressible surface portion configured to contact the pressure roll, the compressible surface portion comprising a porous material configured to absorb a release agent from the pressure roll.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: October 7, 2014
    Assignee: Xerox Corporation
    Inventors: Erwin Ruiz, Jeffrey Nyyssonen Swing, David S. Derleth, Charles T. Facchini, II, Steven Russel, Jorge M. Rodriguez
  • Patent number: 8843049
    Abstract: An image forming method including forming an image of a toner including a wax on a recording medium; fixing the toner image using by an oil-less fixing device; and then forming an overcoat layer on the fixed toner image. When a portion of the fixed toner image having the heaviest toner weight is subjected to an ATR FT-IR analysis, a peak area ratio Ab/Aa falls in a range of 3.0 to 7.0 or a peak area ratio Ab?/Aa? falls in a range of 0.004 to 0.014, wherein Aa represents the area of a peak present in a range of 2896 cm?1 to 2943 cm?1, Ab represents the area of a peak present in a range of 2946 cm?1 to 2979 cm?1, Aa? represents the area of a peak present in a range of 791 cm?1 to 860 cm?1, and Ab? represents the area of a peak present in a range of 2834 cm?1 to 2862 cm?1.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: September 23, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Kabata, Momoko Shionoiri, Masato Iio, Tsuyoshi Asami
  • Publication number: 20140241748
    Abstract: A belt fuser assembly which dispenses lubricant oil or other depleted lubricant component to the inner surface of the fuser belt. The belt fuser assembly may include a lubricant dispenser positioned to be heated by the heating element of the fuser assembly for dispensing a lubricant oil to the inner surface of the fuser belt. A controller coupled to the heating element activates the heating element to generate heat at a fusing temperature during a fusing operation and at at least one second temperature greater than the fusing temperature during a lubricant dispensing operation so as to cause lubricant to dispense from the lubricant dispenser.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicant: Lexmark International, Inc.
    Inventors: Donald Eugene Proffitt, Fangsheng Wu
  • Publication number: 20140241763
    Abstract: A belt fuser assembly which dispenses lubricant oil or other depleted lubricant component to the inner surface of the fuser belt. The belt fuser assembly may include a lubricant dispenser positioned to be heated by the heating element of the fuser assembly for dispensing a lubricant oil to the inner surface of the fuser belt. The lubricant dispenser may include a reservoir containing the lubricant oil and an exit port for delivering the lubricant oil from the reservoir to the inner surface of the fuser belt upon the reservoir being heated by the heating element at a temperature above the fusing temperature of the belt fuser assembly.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicant: LEXMARK INTERNATIONAL, INC.
    Inventors: Donald Eugene Proffitt, Fangsheng Wu
  • Patent number: 8805257
    Abstract: An applying device includes an applying member that applies an applying material to an outer peripheral surface of a fixing member that rotates, while a peripheral velocity difference is caused to exist between a peripheral velocity of the fixing member and a peripheral velocity of the applying member. The applying material contains a fluorocarbon resin material.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: August 12, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Norio Ogawahara, Yasushi Nagata
  • Patent number: 8744328
    Abstract: A fluid delivery system is controlled to adjust a release fluid delivery rate to a rate that is predetermined to be effective for fusing a next sheet in a print job before the sheet arrives at a fusing nip. Predetermined rates and corresponding media types may be stored in memory. A controller controls the fluid release system for a print job in accordance with a print job schedule based on the predetermined fluid delivery rates.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: June 3, 2014
    Assignee: Xerox Corporation
    Inventors: Paul M. Fromm, David Mark Kerxhalli, Benjamin Whitney Paulson, Aldwin A. Roberts, Michele Donna Cleary, David Lee Rasmussen, Biruk Gossaye, Jamison Charles DeLorenzo
  • Patent number: 8731450
    Abstract: In a fixing device for thermally fixing a developer image transferred onto a recording sheet, a nip plate is disposed on an inner surface of a tubular flexible fusing member which is flexibly deformable in such a manner that permits the fusing member to slide along the nip plate, and configured to be heated by a heating element disposed inside the fusing member. The fusing member is nipped between the nip plate and a backup member to form a nip portion between the fusing member and the backup member. The nip plate is bent to form a recessed portion which opens on the inner surface of the fusing member and holds a lubricant.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: May 20, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kei Ishida, Noboru Suzuki, Yoshihiro Miyauchi, Tomohiro Kondo, Tsuneo Fujiwara, Etsuko Fujiwara
  • Patent number: 8693939
    Abstract: A disclosed fixing device includes a fixer application unit configured to apply a fixer containing a softener, capable of softening resin by dissolving or swelling at least a part of the resin, and water to resin particles formed on a recording medium such that the resin particles are fixed on the recording medium. The fixing unit may further include an anti-tack agent application unit configured to apply a liquid anti-tack agent immiscible with the softener to surfaces of the resin particles that are mixed with the softener by the application of the fixer containing the softener.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: April 8, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidenori Tomono, Yasuo Katano, Yukimichi Someya, Tsuneo Kurotori, Yuko Arizumi, Shigenobu Hirano, Hidekazu Yaginuma, Shigeo Takeuchi, Fuminari Kaneko
  • Publication number: 20140086610
    Abstract: Various variable gloss reduction techniques are disclosed. In one embodiment, a gloss reduction technique is disclosed using a textured roller and a wiper impregnated with fuser oil to create a differential gloss pattern that reduces the gloss of an image printed on a substrate. In one embodiment, a gloss reduction technique is disclosed using a combination of heat and pressure to create a differential gloss pattern that reduces the gloss in specific regions of an image printed on a substrate. In one embodiment, a gloss reduction technique is disclosed using a differential gloss pattern to generate a security mark on a printed image to prevent against copying or fraudulent misrepresentation of the image.
    Type: Application
    Filed: October 15, 2013
    Publication date: March 27, 2014
    Applicant: ELECTRONICS FOR IMAGING, INC.
    Inventors: Leon WILLIAMS, Thor OLSON
  • Publication number: 20130336687
    Abstract: An approach is provided for reducing release agent transfer to a pressure member in a fuser. The approach involves causing, at least in part, at least a first sheeted substrate and a second sheeted substrate to be advanced through a fuser in a process direction. The approach also involves determining the presence of the first sheeted substrate at a fusing position. The approach further involves causing, at least in part, a fuser member and a pressure member to engage to form a fusing nip at the fusing position based, at least in part, on the determined presence of the first sheeted substrate at the fusing position. The approach additionally involves determining the first sheeted substrate has advanced through the fusing nip. The approach further involves causing, at least in part, the fuser member and the pressure member to disengage.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 19, 2013
    Applicant: XEROX CORPORATION
    Inventors: Melissa Ann MONAHAN, Erwin RUIZ, Steven RUSSEL, Jeffrey Nyyssonen SWING, Christopher Alan JENSEN
  • Publication number: 20130336688
    Abstract: A fixing apparatus of the invention includes a pressure roller 6 and a fixing roller 7 that make press-contact with each other and an oil roller 8 that makes press-contact with either the pressure roller 6 or the fixing roller 7, and passes a recording sheet through a nip area between the pressure roller 6 and the fixing roller 7 to fix toner on the recording sheet. The fixing apparatus also includes: a pressure roller gear 21 and an oil roller gear 22 that transmit a rotation of a shaft of the pressure roller 6 that makes press-contact with the oil roller 8 to a shaft of the oil roller 8; and a one-way clutch 23 that causes the oil roller 8 to idly rotate in a direction of a driven rotation when the oil roller 8 is driven to rotate by pressing against the pressure roller 6.
    Type: Application
    Filed: February 16, 2012
    Publication date: December 19, 2013
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Masaya Asakawa, Hirokazu Nakamura, Takashi Yamanaka
  • Patent number: 8565657
    Abstract: According to various illustrative embodiments, an apparatus for redistributing release agent on a fuser surface of an image forming device is provided. The apparatus includes a fuser surface for contacting a sheet of media having an image formed thereon by the image forming device, the fuser surface moving in a traveling direction; and a flexible blade for redistributing the release agent on the fuser surface from a first post-fusing distribution to a second distribution, the flexible blade contacting the release agent on the fuser surface at a contact area and pressing the release agent against the fuser surface to redistribute the release agent from the first post-fusing distribution to the second distribution, wherein the flexible blade is adapted to redistribute the release agent such that the second distribution is more uniform across the fuser surface than the first post-fusing distribution.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: October 22, 2013
    Assignee: Xerox Corporation
    Inventors: Augusto E. Barton, James Padula
  • Patent number: 8509665
    Abstract: According to various illustrative embodiments, an apparatus for redistributing release agent on a fuser surface of an image forming device is provided. The apparatus has a fuser surface for contacting a sheet of media having an image formed thereon by the image forming device, the fuser surface moving in a traveling direction; and a smoothing roll for redistributing the release agent on the fuser surface from a first post-fusing distribution to a second distribution, the smoothing roll contacting the release agent on the fuser surface at a contact area and pressing the release agent against the fuser surface to redistribute the release agent from the first post-fusing distribution to the second distribution. The smoothing roll is adapted to redistribute the release agent such that the second distribution is more uniform across the fuser surface than the first post-fusing distribution.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: August 13, 2013
    Assignee: Xerox Corporation
    Inventors: Augusto E. Barton, James Padula
  • Patent number: 8498559
    Abstract: This disclosure relates to a lubricating supply system for a fuser assembly of a printing process having a perforated sleeve, the perforated sleeve supporting a semi-porous foam roll. The perforated sleeve slips around the outer surface of a rotating shaft in order that the lubricant supplied to the hollow of the rotating shaft is diffused through the perforated sleeve and foam roll to lubricate a heated surface of the fuser assembly. A lubricant port connects a source of lubricant to the hollow portion of the rotating shaft.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: July 30, 2013
    Assignee: Xerox Corporation
    Inventors: Martin F Zess, Jason M Lefevre
  • Patent number: 8422927
    Abstract: A fixing device includes: a fixing member that fixes a developer image on a recording medium while rotating; an external heating member that heats the fixing member, the external heating member being driven-rotated by rotation of the fixing member while contacting with an outer peripheral face of the fixing member; an oil supply member that supplies oil to a surface of the external heating member; a switching unit that switches between contact and non-contact of the external heating member to the outer peripheral face of the fixing member, the switching unit causing the external heating member to contact with the outer peripheral face of the fixing member after a fixing operation by the fixing member is started; and a rotation mechanism that rotates the fixing member and rotates the external heating member in a state where the external heating member is separated from the fixing member by the switching unit.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: April 16, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuyuki Kobayashi, Kenji Kanai, Masakatsu Eda
  • Patent number: 8422926
    Abstract: Fixing devices for fixing marking material to a substrate, printing apparatuses and methods of fixing marking material to a substrate are provided. An exemplary embodiment of the fixing devices includes a first roll including an outer surface; a second roll forming a fixing nip with the outer surface of the first roll at which is received a pre-heated substrate on which marking material is disposed; a release agent applicator system including a supply of a release agent having a viscosity of from about 10 cST to about 300 cST, and a release agent applicator for applying the release agent to the outer surface of the first roll; and a thermal energy source for heating the outer surface of the first roll to a temperature of less than a boiling point of the release agent. The first roll and second roll are operable to apply heat and a pressure of at least about 500 psi to the pre-heated substrate and marking material at the fixing nip to fix the marking material to the substrate.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: April 16, 2013
    Assignee: Xerox Corporation
    Inventors: Jason M. LeFevre, Michael Jon Levy, Paul J. McConville
  • Patent number: 8406667
    Abstract: A fixing device includes: a fixing member that fixes a toner image onto a recording medium; a pressing member that presses the recording medium against the fixing member; an oiling unit that applies release oil onto a surface of the fixing member to clean the surface; a removing member that is arranged between an downstream side of the oiling unit and an upstream side of the pressing member in a rotating direction of the fixing member and movable between an in-contact state where the removing member is in contact with the surface of the fixing member and an out-of-contact state where the removing member is out of contact with the surface; a drive unit that drives the removing member; and an oiling control unit that, when starting earliest fixing, controls the drive unit to gradually move the removing member from the in-contact state into the out-of-contact state.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: March 26, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Makoto Yagawara, Tsukasa Onose, Souichi Nakazawa, Sho Sawahata, Ken Onodera, Masahiro Mizuno, Soushi Kikuchi, Takahiro Inoue
  • Patent number: 8385799
    Abstract: A lubricating device includes an lubricant impregnation member to coat a surface of a target member with lubricant, an lubricant supply member to supply lubricant to the lubricant impregnation member, a subsidiary roller to feed the lubricant impregnation member out, a main roller to reel in the lubricant impregnation member fed by the subsidiary roller, a drive motor to drive the main roller, an encoder disc provided at a rotational shaft of the subsidiary roller, an encoder sensor to detect a rotational state of the encoder disc, and a controller unit to calculate an outer diameter of the main roller and a portion of the lubricant impregnation member reeled by the main roller, based on a number of drive steps of the drive motor during a detection interval of the encoder disc.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: February 26, 2013
    Assignee: Ricoh Company, Limited
    Inventor: Atsushi Miyamoto
  • Patent number: 8364065
    Abstract: An image forming apparatus is disclosed, including: a toner image forming unit which forms a toner image on a surface of a transfer material, the toner image being an image formed of toner, the toner containing wax; a fixing device which fixes the toner image using a fixing member on which a mold release agent including oil is applied; and a surface processing device which processes the fixed surface of the transfer material, on which surface the toner image is fixed using the fixing member on which the mold release agent including the oil is applied, wherein the surface processing device further includes a discharging unit which generates a discharge on or near the fixed surface of the transfer material, on which surface the fixed toner image is formed.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: January 29, 2013
    Assignees: Ricoh Company, Ltd., Tohoku Ricoh Co., Ltd.
    Inventors: Takashi Bisaiji, Yasutada Shitara, Hijiri Ogata, Haruki Saitoh
  • Patent number: 8357481
    Abstract: An image forming method including forming an electrostatic latent image on a photoreceptor; developing the latent image with a developer including a toner using a center-feed developing device to form a toner image; transferring the toner image onto a receiving material; and fixing the toner image using a fixing member coated with silicone oil. The toner includes at least a binder resin; a colorant; and a quaternary ammonium salt having a specific formula, wherein when the toner is dispersed in ethanol using ultrasonic waves, the dispersion has a turbidity of from 0.4 to 1.0 when the turbidity is determined using a haze meter. An image forming apparatus including a photoreceptor; a center-feed developing device using a developer including the toner; a transferring device; a fixing device using a fixing member coated with silicone oil; and a cleaner for the photoreceptor.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: January 22, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Hiroyuki Kishida, Masahide Inoue, Hyo Shu, Yasutada Shitara
  • Patent number: 8355659
    Abstract: A fixing device of the present invention includes: an external heating belt which is to contact with a surface of a fixing roller so as to heat up the fixing roller; and a cleaning member (a scraper and/or cleaning pad) which is to contact with the external heating belt. The cleaning pad which is impregnated with silicone oil is to contact with a surface of the external heating belt, thereby applying the silicone oil (release agent) to the surface of the external heating belt. This makes it possible to prevent generation of an offset.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: January 15, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiaki Kagawa, Susumu Murakami, Masashi Hirai, Atsushi Ide, Takashi Mukai
  • Patent number: 8346503
    Abstract: A method enables linear web velocities generated with reference to angular velocity signals generated by encoders at different rollers in a double reflex printing registration system to be equalized. The method includes identifying a low frequency component of a first linear velocity of a moving web, identifying a high frequency component of a second linear velocity of the moving web, and computing a linear velocity for the moving web at a roller in a print zone with reference to the identified high frequency component of the second linear velocity and the identified low frequency component of the first linear velocity.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: January 1, 2013
    Assignee: Xerox Corporation
    Inventors: Yongsoon Eun, Jeffrey J Folkins, Jess R Gentner
  • Patent number: 8346143
    Abstract: A fixing device includes a rotatable first nip formation member, a rotatable second nip formation member, and an oil applier. The second nip formation member is provided under the first nip formation member to contact the first nip formation member. The oil applier includes an oil pan, an oil receiver, and an oil filter. The oil pan is provided under the second nip formation member to contain oil in which the second nip formation member is dipped. The oil receiver holds the oil pan. The oil filter is provided between the oil pan and the oil receiver to filter oil overflowing the oil pan.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: January 1, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Masami Okamoto, Jun Okamoto, Kazuo Suno, Kenji Nozawa, Naoto Suzuki, Yoshihiro Sonohara, Syoichi Kaneko, Keisuke Kubota, Takashi Kagami, Hiroyuki Shimada
  • Patent number: 8265533
    Abstract: An apparatus for applying release agent to a fuser roll used in printing a print job is provided. The apparatus has a release agent metering roll supported for contact with a supply of release agent material; a variable speed drive arranged to effect movement of the release agent metering roll in an endless path at different surface velocities; a donor roll supported in contact with the release agent metering roll and the fuser roll, the donor roll arranged to convey release agent material from the release agent metering roll to the fuser roll at various rates depending on a surface velocity of the release agent metering roll; and a controller that controls a velocity of the variable speed drive such that the surface velocity of the release agent metering roll varies relative to a surface velocity of the fuser roll and the engagement and disengagement times at the start and end of the print job. The variable speed drive is operative independently of the fuser roll.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: September 11, 2012
    Assignee: Xerox Corporation
    Inventors: Augusto E. Barton, Paul M. Fromm
  • Patent number: 8224220
    Abstract: A fixing device includes a rotatable fixing member, a pressing member, a motor, and an oil applier. The pressing member contacts the fixing member. The oil applier includes an application roller and an oil supply mechanism. The application roller applies oil to one of the fixing member and the pressing member. The oil supply mechanism supplies oil to the application roller. The motor is provided independent of other drivers, and supplies a driving force to the application roller to rotate the application roller at an arbitrary speed.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: July 17, 2012
    Assignee: Ricoh Company, Limited
    Inventors: Masami Okamoto, Jun Okamoto, Kazuo Suno, Kenji Nozawa, Naoto Suzuki, Syoichi Kaneko, Yoshihiro Sonohara, Keisuke Kubota, Takashi Kagami, Hiroyuki Shimada
  • Publication number: 20120155929
    Abstract: According to various illustrative embodiments, an apparatus for redistributing release agent on a fuser surface of an image forming device is provided. The apparatus has a fuser surface for contacting a sheet of media having an image formed thereon by the image forming device, the fuser surface moving in a traveling direction; and a smoothing roll for redistributing the release agent on the fuser surface from a first post-fusing distribution to a second distribution, the smoothing roll contacting the release agent on the fuser surface at a contact area and pressing the release agent against the fuser surface to redistribute the release agent from the first post-fusing distribution to the second distribution. The smoothing roll is adapted to redistribute the release agent such that the second distribution is more uniform across the fuser surface than the first post-fusing distribution.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 21, 2012
    Applicant: XEROX CORPORATION
    Inventors: Augusto E. BARTON, James PADULA
  • Publication number: 20120114355
    Abstract: An image forming apparatus includes a fixing roller, a heating section, a pressurizing roller, an oil roller, a first cleaning roller, and a control section. The pressurizing roller is pressed against the fixing roller. The oil roller abuts against the fixing roller and is capable of being rotated by rotation of the fixing roller to apply oil onto a surface of the fixing roller. The first cleaning roller abuts against the oil roller and is capable of being rotated by rotation of the oil roller to clean a surface of the oil roller. When the control section determines that the fixing roller and the pressurizing roller have performed fixing on a predetermined number and more of consecutive sheet surfaces, the control section carries out a first control process which causes the heating section to stop and the fixing roller to rotate for a first predetermined time period after the fixing.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 10, 2012
    Inventors: Masaki Amemiya, Yasunori Minakuchi
  • Publication number: 20120107027
    Abstract: According to various illustrative embodiments, an apparatus for redistributing release agent on a fuser surface of an image forming device is provided. The apparatus includes a fuser surface for contacting a sheet of media having an image formed thereon by the image forming device, the fuser surface moving in a traveling direction; and a flexible blade for redistributing the release agent on the fuser surface from a first post-fusing distribution to a second distribution, the flexible blade contacting the release agent on the fuser surface at a contact area and pressing the release agent against the fuser surface to redistribute the release agent from the first post-fusing distribution to the second distribution, wherein the flexible blade is adapted to redistribute the release agent such that the second distribution is more uniform across the fuser surface than the first post-fusing distribution.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 3, 2012
    Applicant: XEROX CORPORATION
    Inventors: Augusto E. BARTON, James Padula
  • Patent number: 8162472
    Abstract: An apparatus (100) and method that meters fluid film in an ink jet printing system is disclosed. The apparatus can include a source of fluid film (110) and a source metering assembly (120) rotatably supported in the apparatus. The source metering assembly can have a source metering assembly surface (122) coupled to the source of fluid film and the source metering assembly surface can be configured to transport fluid film from the source of fluid film. The apparatus can include a donor assembly (140) rotatably supported in the apparatus, where the donor assembly can have a donor assembly surface (142) coupled to the source metering assembly surface and the donor assembly surface can be configured to transport fluid film from the source metering assembly surface. The apparatus can include an ink jet printhead (195) configured to emit ink and a print assembly (170) rotatably supported in the apparatus.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: April 24, 2012
    Assignee: Xerox Corporation
    Inventors: Brendan H. Williamson, David P. Van Bortel
  • Patent number: 8126382
    Abstract: This is a system to coat oil on a fuser roller in a xerographic marking procedure. The system has an IR sensor which is located adjacent to the metering roller and which measures the emissivity of an oil film on the metering roller. Once the IR sensor determines the emissivity of this film, it conveys the emissivity reading to a controller. The controller then controls the metering roller speed to thereby control the oil film thickness. Once a fixed oil film is determined, the emissivity can be used to ensure this same film thickness is applied from run to run. There is no need to redesign the entire oil coating apparatus when the desired film thickness is varied, the same apparatus is used only the emissivity will vary to vary the oil film thickness.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: February 28, 2012
    Assignee: Xerox Corporation
    Inventor: John E Derimiggio
  • Publication number: 20120039642
    Abstract: Multi-stage fixing systems for fixing toner to a substrate, printing apparatuses and methods of fixing marking material to a substrate are provided. An exemplary embodiment of the multi-stage fixing systems includes a softening device for softening toner applied to a substrate by a marking device; and a fixing device for fixing the softened toner to the substrate. The fixing device includes a first fixing member including a first surface; a first thermal energy source for actively heating the first surface; and a second fixing member including a second surface, the first surface and the second surface form a fixing nip at which the substrate with softened toner is received. The first fixing member and the second fixing member are operable to apply heat and pressure to the substrate and softened toner received at the fixing nip to fix the toner to the substrate.
    Type: Application
    Filed: August 12, 2010
    Publication date: February 16, 2012
    Applicant: XEROX CORPORATION
    Inventors: Dale R. Mashtare, Shu Chang, Grace T. Brewington, John F. Knapp, Anthony S. Condello, Daniel M. Bray, Paul J. McConville, Jason M. LeFevre, Karen A. Moffat, Jordan H. Wosnick, Santokh S. Badesha
  • Publication number: 20120039645
    Abstract: Fixing devices for fixing marking material to a substrate, printing apparatuses and methods of fixing marking material to a substrate are provided. An exemplary embodiment of the fixing devices includes a first roll including an outer surface; a second roll forming a fixing nip with the outer surface of the first roll at which is received a pre-heated substrate on which marking material is disposed; a release agent applicator system including a supply of a release agent having a viscosity of from about 10 cST to about 300 cST, and a release agent applicator for applying the release agent to the outer surface of the first roll; and a thermal energy source for heating the outer surface of the first roll to a temperature of less than a boiling point of the release agent. The first roll and second roll are operable to apply heat and a pressure of at least about 500 psi to the pre-heated substrate and marking material at the fixing nip to fix the marking material to the substrate.
    Type: Application
    Filed: August 12, 2010
    Publication date: February 16, 2012
    Applicant: XEROX CORPORATION
    Inventors: Jason M. LeFEVRE, Michael J. Levy, Paul J. McConville
  • Patent number: 8112022
    Abstract: In a fixing device, a controller switches a pressing member between a pressure application state to contact the pressing member against a fixing member and a pressure release state to separate the pressing member from the fixing member. The controller starts rotation of the pressing member before the pressing member contacts the fixing member in the pressure application state, when the pressing member switches from the pressure release state to the pressure application state. An oil applier includes an oil pan and an oil regulating member. The oil pan is provided under the pressing member to contain oil in which the pressing member is dipped. The oil regulating member is provided downstream from the oil pan in a direction of rotation of the pressing member to contact the pressing member to regulate an amount of oil adhering to the pressing member.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: February 7, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Masami Okamoto, Jun Okamoto, Kazuo Suno, Kenji Nozawa, Naoto Suzuki, Yoshihiro Sonohara, Syoichi Kaneko, Takashi Kagami, Keisuke Kubota, Hiroyuki Shimada
  • Publication number: 20120020708
    Abstract: This disclosure relates to a lubricating supply system for a fuser assembly of a printing process having a perforated sleeve, the perforated sleeve supporting a semi-porous foam roll. The perforated sleeve slips around the outer surface of a rotating shaft in order that the lubricant supplied to the hollow of the rotating shaft is diffused through the perforated sleeve and foam roll to lubricate a heated surface of the fuser assembly. A lubricant port connects a source of lubricant to the hollow portion of the rotating shaft.
    Type: Application
    Filed: July 23, 2010
    Publication date: January 26, 2012
    Applicant: XEROX CORPORATION
    Inventors: Martin F. Zess, Jason M. Lefevre
  • Publication number: 20110318072
    Abstract: An apparatus for applying release agent to a fuser roll used in printing a print job is provided. The apparatus has a release agent metering roll supported for contact with a supply of release agent material; a variable speed drive arranged to effect movement of the release agent metering roll in an endless path at different surface velocities; a donor roll supported in contact with the release agent metering roll and the fuser roll, the donor roll arranged to convey release agent material from the release agent metering roll to the fuser roll at various rates depending on a surface velocity of the release agent metering roll; and a controller that controls a velocity of the variable speed drive such that the surface velocity of the release agent metering roll varies relative to a surface velocity of the fuser roll and the engagement and disengagement times at the start and end of the print job. The variable speed drive is operative independently of the fuser roll.
    Type: Application
    Filed: June 24, 2010
    Publication date: December 29, 2011
    Applicant: XEROX CORPORATION
    Inventors: Augusto E. BARTON, Paul M. Fromm
  • Patent number: 8082842
    Abstract: An offset printing apparatus for transferring a phase change ink onto a print medium, which includes a) a phase change ink component for applying a phase change ink in a phase change ink image; b) an imaging member for accepting the phase change ink image from the phase change ink component, and transferring the phase change ink image from the imaging member to the print medium, the imaging member having i) an imaging substrate, and thereover ii) an optional outer layer; and iii) iii) a release agent material coating, wherein the release agent material coating includes a perfluorinated polyether having a skeleton selected from the group consisting of Formulas I and II and mixtures thereof: CF3—(CF2CF2)m—O—(R1R2O)—(R3R3O)n—(R3O)p—(CF2)q—CF3??Formula I and R1—(CF2CF2)m—O—(R2R2O)n—(R2O)p—(CF2)q—CF3—R1??Formula II.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: December 27, 2011
    Assignee: Xerox Corporation
    Inventors: David J. Gervasi, Bryan J. Root, Santokh S Badesha