Canon Patents

Canon Inc. manufactures office appliances, including multifunction devices, copying machines, laser printers, and inkjet printers. It also develops imaging systems, such as digital cameras and digital video camcorders, as well as lenses and photographic accessories. Its third-largest product segment is semiconductor lithography equipment.

Canon Patents by Type

  • Canon Patents Granted: Canon patents that have been granted by the United States Patent and Trademark Office (USPTO).
  • Canon Patent Applications: Canon patent applications that are pending before the United States Patent and Trademark Office (USPTO).
  • Patent number: 9602753
    Abstract: A solid-state imaging apparatus includes: a comparator comparing a signal output from pixels with a reference signal of which level changes dependent on time; a plurality of first bit storage units and a plurality of second bit storage units holding, bit by bit, a count signal of the plurality of bits from a counter, according to a write control signal based on a result of the comparing by the comparator; and a control unit arranged between the comparator and the first and second bit storage units, and adjusting a delay time of the write control signal. An order of lengths of the delay time of the count signal held by the first and second bit storage units is the same as an order of lengths of the delay time of the write control signal of the first and second bit storage units.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazuhiro Saito, Hiroaki Kameyama, Kohichi Nakamura
  • Patent number: 9603231
    Abstract: A processing apparatus includes a substrate supporting unit that supports a substrate in a processing space in which the substrate is processed, a first partitioning member that includes a ceiling portion having an opening and partitions the processing space from an outer space, and a second partitioning member that is attached to the first partitioning member so as to close the opening and partition the processing space from the outer space together with the first partitioning member. The second partitioning member is attached to the first partitioning member so that the second partitioning member is removable from the first partitioning member by moving the second partitioning member toward a space which a lower surface of the ceiling portion faces.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: March 21, 2017
    Assignee: Canon Anelva Corporation
    Inventors: Tomoaki Osada, Masami Hasegawa
  • Patent number: 9603195
    Abstract: An apparatus includes a C-shaped susceptor including a first substrate placement portion capable of placing the substrate, and an opening portion, a substrate stage including a second substrate placement portion capable of placing the substrate, and a susceptor support portion configured to support the susceptor, and a complementary portion formed separately from the susceptor support portion, engaged with the susceptor support portion, and configured to complement an opening portion of the susceptor to form the susceptor into an annular shape in a state in which the susceptor support portion supports the susceptor. When the substrate is placed on the second substrate placement portion and the second substrate placement portion is located at a predetermined distant position with respect to the heat radiation surface, the susceptor forms the annular shape together with the complementary portion to surround the substrate.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON ANELVA CORPORATION
    Inventors: Kaori Mashimo, Masami Shibagaki
  • Patent number: 9602842
    Abstract: The invention provide an apparatus that enables encoding while suppressing a maximum distortion due to a compression of pixel values to an allowable error. The apparatus comprises a setting unit that sets transformation information for transforming a pixel value of a target image into a second pixel value in accordance with the allowable error information; a transformation unit that transforms each pixel value of the image based on the transformation information to generate a second image; a first unit that encodes the second image using an encoding unit for encoding such that a difference in a pixel value before and after encoding is within a constant ?; and a second unit that generates inverse transformation information for transforming a pixel value of the second image into a value related to a pixel value of the target image, and lossless-encodes the generated information.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hideyuki Matsui, Tomokazu Sato
  • Patent number: 9602579
    Abstract: Roles of communication apparatuses in a service executed by the communication apparatuses and roles of the communication apparatuses in a layer different from a layer corresponding to the service are efficiently controlled. A communication apparatus determines whether to function as a base station or a terminal. The communication apparatus determines to function as the base station when functioning as a server of a service executed with another communication apparatus.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hideaki Tachibana
  • Patent number: 9597870
    Abstract: Provided is an inkjet print head in which, without causing an increase in print head size, printing elements that can perform ejection at a high frequency are densely arrayed. For this purpose, an ink supplying port and a wiring line, which are common to a predetermined number of printing elements, are prepared, and a substrate on which the ink supplying ports and the wiring lines are alternately arranged at the same pitches as an array pitch of the printing elements is also prepared.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Sakurai, Ken Tsuchii
  • Patent number: 9597871
    Abstract: An embodiment of this invention is directed to determining a discharge status of liquid discharged from a liquid discharge head capable of accurately determining the discharge status of each nozzle at high speed with a simple arrangement. According to the embodiment, a base includes an electrothermal transducer configured to supply heat to liquid, a first temperature detection element configured to detect the temperature of the electrothermal transducer, and a second temperature detection element configured to detect the temperature of the same electrothermal transducer. In this case, the first and the second temperature detection elements are arranged so that at least part of each of the first and second temperature detection elements is included immediately above or below a region where the electrothermal transducer is arranged in the base.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeshi Ike
  • Patent number: 9597874
    Abstract: A liquid ejection head includes a substrate and a flow path forming member. Energy generating elements that generate energy with which a liquid is ejected are formed on the substrate. The flow path forming member is disposed on the substrate and a flow path which encloses the energy generating elements is formed using the flow path forming member. Plural ejection ports that are in communication with the flow path are formed in the flow path forming member. A groove portion extending obliquely with respect to an X direction in which adjoining ejection ports are arranged is formed between the adjoining ejection ports in the flow path forming member.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akio Goto
  • Patent number: 9597875
    Abstract: A needed job is quickly performed even if a recovery operation for a print head performed by a recovery mechanism needs a long time as a result of sharing of the same drive source between a discharge roller and the recovery mechanism. To achieve this, a recovery operation for the print head is suspended when a print job is received while the recovery operation is being performed, on a condition that a printing apparatus is in a state where the printing apparatus permits the print job to be performed.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoki Aoyama, Toshiyuki Kuroda
  • Patent number: 9597884
    Abstract: To provide an ink cartridge in which a satisfactory electrical connection with a printer main assembly can be established An ink cartridge 1 detachably mountable to a cartridge mounting portion 33 including an ink receiving tube 52, an electrical connecting portion 55 and a locking lever 58, the ink cartridge 1 includes a tube inserting portion 8 into which an ink receiving tube 52 is inserted and which is provided in a lower portion at a front surface 2c of a casing 2, an electrical contact 4 provided above the tube inserting portion 8 and electrically connectable with the electrical connecting portion 55, and an engaging portion 24 provided in a position closer to the electrical contact than to the tube inserting portion 8 and engageable with the locking lever 58.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tatsuo Nanjo, Yasuo Kotaki, Kenta Udagawa, Hiroshi Koshikawa, Wataru Takahashi, Koichi Kubo, Shigeki Fukui, Naozumi Nabeshima, Soji Kondo, Masafumi Seki, Kazuya Yoshii, Satoshi Kimura, Kyosuke Toda
  • Patent number: 9599185
    Abstract: A vibration control apparatus is provided that controls the vibration of a first object supported by a base, the apparatus including: a first control system including a first compensator for outputting a first operation signal representing an input to a first driving unit based on a first detection signal output by a first detector; a second control system including a second compensator for outputting a second operation signal representing an input to a second driving unit based on a second detection signal output by a second detector; and a third control system including a third compensator for outputting a third operation signal representing an input to the first driving unit based on a signal relating to the second control system so as to compensate the vibration of the base.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Ryo Nawata
  • Patent number: 9597893
    Abstract: If the shape of an element substrate is a parallelogram, a trapezoid, an uneven shape, or the like, there is no region where a driver transistor corresponding to a heater in the vicinity of an end portion of the element substrate is arranged, and thus the heater cannot be arranged near the end portion. The layout arrangement of driving circuits suitable for the substrate shape is required while suppressing an increase in the area of the element substrate. In an embodiment of this invention, the diffusion layer of the drain electrode of a driver transistor for driving a heater is divided in a direction perpendicular to that in which heaters are arranged, and the divided portions are connected to form one driver transistor. The divided portions are arranged stepwise.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoko Kudo, Ryo Kasai
  • Patent number: 9597899
    Abstract: The present invention provides an information processing apparatus. The apparatus includes a generating unit generating printing data for printing on a printing medium by a printing apparatus, an analyzing unit analyzing a margin amount on a leading edge side of the printing medium based on the printing data, and a transmitting unit transmitting margin information based on an analysis result of the analyzing unit to the printing apparatus prior to transmission of the printing data to the printing apparatus.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kazuya Imafuku
  • Patent number: 9597900
    Abstract: The present invention provides a printing apparatus. The printing apparatus includes a feeding unit, a pair of rollers configured to nip a printing medium and to convey the printing medium fed by the feeding unit, a printing unit and a control unit. The control unit can execute successive overlapped conveyance in which the pair of rollers nip an overlapping portion between a trailing edge of a preceding printing medium and a leading edge of a succeeding printing medium and convey them. The control unit executes the successive overlapped conveyance at least on condition that printing of the preceding printing medium by the printing unit has ended.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasufumi Tanaami, Tetsuya Saito, Noriyuki Sugiyama, Syunichi Kunihiro
  • Patent number: 9597798
    Abstract: A control method of a robot apparatus, the robot apparatus including a link and a pair of actuators, obtaining each driving force command value of each of the actuators, and controlling each of the actuators, the control method including: a torque command value calculation step of using the target stiffness, the target trajectory, angular velocity of the target trajectory, and angular acceleration of the target trajectory to calculate a torque command value; a determination step of determining whether each of the driving force command values is a value 0 or greater; a change step of performing at least one of a change of increasing the target stiffness and a change of reducing the angular acceleration; and a driving force command value calculation step of using the target stiffness and the torque command value to calculate each of the driving force command values.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kiyoshi Takagi
  • Patent number: 9597803
    Abstract: Provided is a small-sized robot device having high versatility without decreasing the work efficiency. The robot device includes: an arm; a hand or a tweezer tool that includes a stereo camera for measuring a three-dimensional position of a workpiece, the hand or the tweezer tool performing a work with respect to the workpiece whose three-dimensional position has been measured by the stereo camera; and a connection portion or a hand provided at a distal end of the arm, the connection portion or the hand releasably connecting the hand or the tweezer tool to the arm.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toshihiko Mimura, Takashi Arai
  • Patent number: 9598253
    Abstract: A printing apparatus comprises a feeding roller configured to feed a printing sheet, a conveyance roller configured to convey the printing sheet, a printing unit configured to print on the printing sheet, a conveyance control unit configured to control conveyance of printing sheets so that a trailing edge of a preceding sheet and a leading edge of a succeeding sheet overlap each other, an acquisition unit configured to acquire, before completion of a printing operation of the preceding sheet, information of a leading edge position of the succeeding sheet, and a determination unit configured to determine whether to convey the succeeding sheet to a position facing the printing unit while keeping an overlap state between the preceding sheet and the succeeding sheet in accordance with the leading edge position of the succeeding sheet.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuya Saito, Noriyuki Sugiyama, Yasuyuki Asai, Syunichi Kunihiro
  • Patent number: 9598260
    Abstract: An image forming apparatus determines whether crease processing at a plurality of portions set on the sheet includes crease processing on two, front and back surfaces of the sheet; determines, if it is determined that crease processing includes crease processing on the two surfaces of the sheet, whether a connected post-processing apparatus that performs crease processing on a sheet can perform crease processing on the two, front and back surfaces of the sheet by one feeding; and controls, if it is determined that the connected post-processing apparatus cannot perform crease processing on the two surfaces by one feeding, to change, to one of the front and back surfaces of the sheet based on attribute information of the sheet, a surface to be processed in crease processing at the plurality of portions.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideaki Ooba
  • Patent number: 9598592
    Abstract: Provided is an ink set enabling the recording of images that have excellent gloss clarity and bronzing resistance and have suppressed an occurrence of fringe unevenness when a clear ink and a pigment ink are used in combination. The aqueous ink set includes a combination of a first ink containing no coloring material and a second ink containing a coloring material.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Eiichi Nakata, Hirofumi Ichinose, Kouhei Nakagawa
  • Patent number: 9599171
    Abstract: A one-way clutch includes: an inner ring provided with an inserting opening for permitting insertion of a rotation shaft and rotatable integrally with the rotation shaft by being engaged with the rotation shaft; an outer ring engaged with an outer peripheral surface of the inner ring and rotatable in one direction relative to the inner ring and non-rotatable in a direction opposite to the one direction; and an elastic metal plate member, engaged with the inner ring, for limiting movement of the inner ring relative to the outer ring in a rotational axis direction of the outer ring. When the rotation shaft is mounted in the inner ring, the elastic metal plate member includes a leaf spring portion positioned and elastically deformable in a gap between the rotation shaft and the inner ring.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshimasu Yamaguchi, Takashi Uno
  • Patent number: 9599950
    Abstract: The power supply apparatus includes a transformer, a switch element that drives a primary side of the transformer, and a control unit that controls a drive frequency of the switch element, wherein when a state of driving the switch element at a first drive frequency is shifted to a state of driving the switch element at a second drive frequency lower than the first drive frequency, the control unit turns on the switch element at a first timing in which a displacement amount of the transformer caused by the drive of the transformer becomes a first displacement amount and at a second timing in which the displacement of the transformer becomes a second displacement amount smaller than the first displacement amount.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Minoru Hayasaki
  • Patent number: 9599754
    Abstract: An optical element array includes a plurality of optical elements arranged along a first direction and a second direction. A first optical element is included at a position distanced from a center of the optical element array by a first distance. The first optical element has a first width, a first height, and a first curvature radius at the first position, and a second width, a second height, and a second curvature radius at a second position. The first width is wider than the second width, the first height is higher than the second height, and the first curvature radius is smaller than the second curvature radius. The first position and the second position are taken along a single direction.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunari Kawabata, Jun Iba, Zempei Wada
  • Patent number: 9599462
    Abstract: To measure the three-dimensional shape of a target object with higher accuracy, a three-dimensional shape measurement apparatus projects a pattern image to a predetermined measurement area including a support structure on which the target object is placed; and captures an image of the predetermined measurement area. In addition, the apparatus derives, based on the captured image, a first correction value for correcting a position fluctuation of a support structure, and a second correction value for correcting a fluctuation of a projection position; and calculates, based on the captured image and the first correction value and the second correction value, a plurality of coordinates on a surface of the target object.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Kobayashi, Shinji Uchiyama
  • Patent number: 9599879
    Abstract: An image pickup apparatus capable of reducing unnecessary reflected light without narrowing an exposure area. A holding member holds a semi-transparent mirror and is rotatably supported by a mirror box so as to move between a mirror-down position in a photographing light path and a mirror-up position out of the photographing light path. A shading member is supported on an object-side end of the holding member via a rotation shaft so as to rotate between a closed position close to the holding member and an opened position apart from the holding member. An urging member energizes the shading member toward the opened position when the holding member is in the mirror-down position. An engagement portion engages with the shading member when the holding member rotates toward the mirror-up position so as to rotate the shading member toward the closed position against the urging force.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Futoshi Hirai, Hiroyasu Sugihara
  • Patent number: 9599893
    Abstract: A production process for an optically shaped product, including applying a photosensitive resin composition in a form of a dry film on to a substrate in which a hole opening to a surface thereof is formed so as to cover the hole and performing patterning to form an optically shaped product, wherein the photosensitive resin composition contains a resin comprising a tri- or higher functional epoxy resin and a bifunctional epoxy resin, the bifunctional epoxy resin has a weight-average molecular weight (Mw) of 5,500 to 60,000, the resin has a weight-average molecular weight (Mw) ranging from 4,500 to 11,000, and the mixing ratio by mass between the tri- or higher functional epoxy resin and the bifunctional epoxy resin satisfies (b)/(a)?1.5, where (a) is the mass of the tri- or higher functional epoxy resin, and (b) is the mass of the bifunctional epoxy resin.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Isamu Horiuchi
  • Patent number: 9599903
    Abstract: A foreign substance detection method includes: judging the presence/absence of a foreign substance by measuring a surface condition of a substrate; measuring a surface condition of a second substrate different from the substrate upon replacing the substrate on the chuck with the second substrate, when it is judged in the judging that a foreign substance exists; and determining whether an adhering location of the foreign substance determined to exist in the judging is the substrate, based on a measurement result obtained in the measurement.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tadao Nakamura, Yuji Kosugi, Tomohisa Nakazawa
  • Patent number: 9599913
    Abstract: An electrophotographic member is provided in which conductivity barely reduces and sufficient conductivity is obtained even under a low temperature and low humidity environment, a reduction in resistance beyond necessity is readily suppressed even under a high temperature and high humidity environment, and the bleeding of the quaternary ammonium salt can be suppressed.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Satoru Nishioka, Kazuhiro Yamauchi, Masahiro Watanabe, Masaki Yamada, Hideya Arimura
  • Patent number: 9599914
    Abstract: The electrophotographic member includes an electro-conductive substrate and an electro-conductive resin layer as the surface layer on the substrate. The electro-conductive resin layer contains a binder and a bowl-shaped resin particle; the surface of electrophotographic member has a concavity derived from the opening of the bowl-shaped resin particle, a protrusion derived from the edge portion of the opening and the electro-conductive resin layer; and when the surface of the member is observed using a scanning electron microscope at an accelerating voltage (1 kV) and a magnification (×2000) while applying a DC voltage (50 to 100 V) between an electrode disposed opposite to the electrophotographic member and the substrate, the brightness of the protrusion, K1, the brightness of the bottom of the concavity, K2, and the brightness of the exposed surface of the electro-conductive resin layer, K3, satisfy K2<K1, K3<K1 and 0.8?K2/K3?1.2.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Uematsu, Tomohito Taniguchi, Masahiro Watanabe, Noboru Miyagawa, Taichi Sato, Takehiko Aoyama, Takeshi Yoshidome
  • Patent number: 9599915
    Abstract: A conductive layer of an electrophotographic photosensitive member includes a binder material, a first metal oxide particle, and a second metal oxide particle. The first metal oxide particle is a zinc oxide particle or tin oxide particle coated with tin oxide doped with phosphorus, tungsten, niobium, tantalum, or fluorine. The second metal oxide particle is an uncoated zinc oxide particle or tin oxide particle. The content of the first metal oxide particle is not less than 20% by volume and not more than 50% by volume based on the total volume of the conductive layer. The content of the second metal oxide particle is not less than 0.1% by volume and not more than 15% by volume based on the total volume of the conductive layer, and not less than 0.5% by volume and not more than 30% by volume based on the content of the first metal oxide particle.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takashi Anezaki, Kazuhisa Shida, Haruyuki Tsuji, Atsushi Fujii, Nobuhiro Nakamura, Hiroyuki Tomono, Hideaki Matsuoka
  • Patent number: 9599917
    Abstract: An electrophotographic photosensitive member that abuts with a charging member and/or a developer carrying member with an abutting member interposed therebetween, wherein the electrophotographic photosensitive member has a first portion and a second portion abutting with the abutting member along the longitudinal direction thereof, the electrophotographic photosensitive member has a support, a charge generation layer containing a charge generating material and a polyacetal resin, and a surface layer in this order, the electrophotographic photosensitive member has, in the first portion, an undercoat layer containing a polymerized product of a composition including an electron transporting material and a cross-linking agent, the layer being adjacent to a surface of the charge generation layer, facing the support, and the electrophotographic photosensitive member has, in the second portion, an intermediate layer containing a metal oxide particle and a phenol resin, the layer being between and adjacent to the sup
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Okuda, Nobuhiro Nakamura, Kazunori Noguchi, Akihiro Maruyama, Atsushi Fujii, Yuka Ishiduka, Yuki Yamamoto, Kazuko Sakuma, Tatsuya Ikezue
  • Patent number: 9599919
    Abstract: The present invention relates to a toner having a toner particle containing a binder resin containing a styrene acrylic resin and a block polymer, wherein the block polymer has a polyester segment and a vinyl polymer segment and has a melting point of 55° C. to 90° C., the polyester segment has a specific structure and a solubility parameter (SP) value of 9.40 to 9.85, and the vinyl polymer segment has a weight-average molecular weight (Mw) of 4000 to 15000.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoya Isono, Masatake Tanaka, Tsutomu Shimano, Shintaro Noji, Yu Yoshida
  • Patent number: 9599920
    Abstract: The present invention is a magnetic carrier that has a magnetic carrier core and a resin coat layer, wherein the resin coat layer contains a coat resin A and a coat resin B, the coat resin A is a polymer obtained by polymerization of a (meth)acrylate ester monomer that has an alicyclic hydrocarbon group, the coat resin B is a polymer obtained by polymerization of (meth)acrylic monomer and has a polar group and an acid value of 4.0 to 50.0 mg KOH/g, the content of the coat resin A is 10 to 90 mass %, the content of the coat resin B is 10 to 90 mass %, and an acid value of the resin component in the resin coat layer is 1.0 to 10.0 mg KOH/g.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Nobuyoshi Sugahara, Hironori Minagawa, Yuto Onozaki, Wakashi Iida
  • Patent number: 9599923
    Abstract: An image forming apparatus includes a photosensitive member; a charging device; an exposure device; and a developer carrying member, wherein, when it is assumed that an image forming area, a printing portion and a non-printing portion are an area on the photosensitive member on which an image to be transferred onto a recording material is formed, an area in the image forming area to which the developer adheres and an area in the image forming area to which the developer does not adhere, respectively, the exposure device exposes the printing portion at a first laser power, exposes the non-printing portion at a second laser power smaller than the first laser power, and exposes a non-image forming area on the photosensitive member between two adjacent image forming areas at no laser power or a third laser power smaller than the second laser power.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takuya Kitamura, Hideaki Hasegawa, Shuichi Tetsuno
  • Patent number: 9599926
    Abstract: A developing unit includes a developing container, a developing sleeve, a developer regulating member, and a magnetic field generating portion. The magnetic field generating portion includes a drawing-up pole and a cut pole. In addition, in a peak-to-peak area, the magnetic field generating portion includes at least one of an Fr flat area in which Fr is substantially constant and an Fr attenuation area in which Fr attenuates toward the cut pole side from the drawing-up pole side, and is configured that F? is oriented toward the same direction as a direction of rotation of the developing sleeve in the entire peak-to-peak area.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yusuke Ishida, Katsuya Nose, Kosuke Takeuchi, Toshihisa Yago, Fumiyoshi Saito, Naoki Mugita
  • Patent number: 9599930
    Abstract: A fixing portion 18c for suppressing movement of a developer bag 16 when the developer bag 16 is unsealed by moving a sealing member 19 is provided. By this, unsealing becomes easy.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroomi Matsuzaki, Junichi Matsumura, Kazuki Matsumoto, Tatsuo Fujisaki, Kojiro Yasui
  • Patent number: 9599932
    Abstract: An accommodating container includes: an accommodating chamber, provided with an opening, for accommodating a developer; a seal member for unsealably sealing the opening; and a rotatable member rotatably supported inside the accommodating chamber. The seal member includes a sealing portion for sealing the opening, a connecting portion connected with the rotatable member, and at least one hole provided between the sealing portion and the connecting portion. The rotatable member includes a shaft portion and at least one projection extending in a direction of being spaced from the shaft portion. The hole and the projection are provided to establish a non-overlapping positional relationship with respect to a direction along the shaft portion.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Takeuchi, Yoshiyuki Batori, Ryuta Murakami, Daisuke Makiguchi, Gosuke Goto, Makoto Tokudome, Yu Fukasawa
  • Patent number: 9599933
    Abstract: In the structure of a shutter moving mechanism, if the inclination angle of an elongated hole with respect to a sliding direction of a shutter is increased, it is necessary to increase the size of a movement plate for moving the shutter. On the other hand, if the inclination angle of the elongated hole with respect to the sliding direction of the shutter is decreased, an urging force with which a user urges the door against an image forming apparatus when shutting the door is increased. A shutter moving mechanism includes a rotation mechanism and moves the shutter by rotation of the rotation mechanism.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Aruga
  • Patent number: 9599935
    Abstract: In an adjustment step, an adjustment purpose toner image is formed on an intermediate transfer belt, and the adjustment purpose toner image is removed from the intermediate transfer belt by a cleaning member contacting the intermediate transfer belt and through an electrostatic cleaning step. This adjustment step is executed in a state where a toner attachment amount on a charging member is switched from a first limit value, which is allowed in the image forming step to a second limit value, which is allowed immediately before executing the adjustment step. This switching is performed by the execution of a toner discharging step, where a power supply changes the state of applying voltage to the charging member from that in the electrostatic cleaning step, so that toner attached to the charging member is transferred to the intermediate transfer belt.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanori Asai, Kazuhiro Funatani, Hiroyuki Seki, Shuji Saito, Yasutaka Yagi, Tetsuichiro Fujimoto
  • Patent number: 9599943
    Abstract: An image forming apparatus includes an image forming unit for forming an image on a recording material, a first detection unit including a transmission unit for transmitting an ultrasonic wave and a reception unit for receiving the transmitted ultrasonic wave, first and second conveyance units for conveying the recording material, and a control unit. The first and second conveyance units form a loop on the recording material by conveying the recording material at different speeds. The control unit controls an image forming condition for forming an image on the recording material by the image forming unit, based on the ultrasonic wave received via the recording material in a period in which no loop is formed on the recording material by the first and second conveyance units.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tsutomu Ishida, Masafumi Monde, Takuya Shono, Kohki Abiko
  • Patent number: 9599944
    Abstract: The circuit substrate includes at least two lands formed on a substrate, wherein one electrode is to be mounted on the at least two lands, an electronic part having electrodes, one of the electrodes is soldered on the at least two lands with solders whose amounts are adjusted by a metal mask having at least two opening parts, positions of the at least two opening parts corresponding to the at least two lands when the solders are applied and melted, areas of the at least two opening parts being different with each other, wherein a height of one of the solders is different from a height of the other of the solders according to the difference of the areas of the at least two opening parts of the metal mask, whereby the electronic part is mounted on the circuit substrate in an inclined state.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masayuki Sakai, Takahiro Yoneyama, Fumiyuki Yamatsuka
  • Patent number: 9599947
    Abstract: When calculating a toner consumption amount that is based on a dot count value of raster data, the toner consumption amount can be estimated more accurately by taking into consideration density control as well as pulse width control, which are used as part of image formation processing.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kensuke Kawajiri
  • Patent number: 9597888
    Abstract: An inkjet printing apparatus performing a printing operation using a main tank for storing ink and a sub tank for storing the ink supplied from the main tank to supply the ink to the print head includes a detection unit for detecting the ink amount in the sub tank and an ink filling unit for driving a driving unit for supplying ink from the main tank to the sub tank to subject the sub tank to an ink filling operation. The ink filling unit is configured, when the ink amount detected by the detection unit is determined to be equal to or lower than the first predetermined amount, the second ink filling operation is performed. The second ink filling operation performs a driving longer than the drive time of the driving unit in the first ink filling operation performed when the main tank is attached to the inkjet printing apparatus.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Takahashi, Kei Kosaka, Tomoyuki Tenkawa, Naozumi Nabeshima
  • Patent number: 9599957
    Abstract: An image forming apparatus includes: a supporting member supporting multiple cartridges and movable between an inside position inside an apparatus main body and an outside position, in which the cartridges are supported arrayed in a direction of extracting the supporting member from the inside position to the outside position, with the multiple cartridges being detachably attachable at the outside position; a first cartridge; a second cartridge adjacent to the first cartridge; and a third cartridge adjacent to the second cartridge. The first cartridge has a greater protrusion amount from the supporting member compared to the second cartridge and the third cartridge, in a direction orthogonal to the extracting direction and to a longitudinal direction of the cartridges. When viewed from the orthogonal direction, the amount of overlapping between the first cartridge and the second cartridge is greater than the amount of overlapping between the second cartridge and the third cartridge.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Suzuki, Noritomo Yamaguchi, Yuichi Fukui
  • Patent number: 9599951
    Abstract: A roller is provided includes a cylindrical shaft supported by a main assembly of an image forming apparatus or a detachable cartridge. The cylindrical shaft includes a separation region on a circumference of the cylindrical shaft, where a pair of end portions of the cylindrical shaft oppose each other or are in contact with each other with respect to a circumferential direction relative to the circumference of the cylindrical shaft, and wherein the separation region extends in an axial direction of the cylindrical shaft. In addition, a rotatable cylindrical member is mounted around an outer circumference of the cylindrical shaft and is rotatable about the cylindrical shaft while an inner peripheral surface of the rotatable cylindrical member is in contact with an outer peripheral surface of the cylindrical shaft in a region of the cylindrical shaft other than the separation region with respect to the circumferential direction.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Noritomo Yamaguchi, Yoichiro Iizuka
  • Patent number: 9599952
    Abstract: An image forming apparatus includes a main assembly provided with an opening and a tray for placing thereon a cartridge for forming an image, wherein the tray is movable through the opening between an image forming position where the cartridge is used for image formation inside the main assembly and a mounting and demounting position where the cartridge is exposed to an outside of the main assembly and is mountable and demountable. In addition a door opens and closes the opening, and an accommodating member accommodates a sheet on which an image is formed. When the tray is in the mounting and demounting position, the door supports the tray and the accommodating member supports the door.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiromi Fujinaka, Takuya Suto, Yuichiro Osawa
  • Patent number: 9599955
    Abstract: A developer storage unit includes a receiving portion which is provided on a rotating shaft, and configured to receive a developer falling from a conveyance member.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kuniaki Hirukawa, Akihiro Fujiwara, Yu Fukasawa
  • Patent number: 9599956
    Abstract: An image forming apparatus for forming an image on a recording material includes a main assembly to which a cartridge including an image bearing member on which a latent image is formed and including a developing device for developing the latent image on the image bearing member is detachably mountable, and a transfer unit, detachably mountable to the main assembly separately from the cartridge, for transferring a developer image formed on the image bearing member. The developing device includes a developer carrying member and is movable between a contact position where the developer carrying member is contacted to the image bearing member and a spaced position where the developer carrying member is spaced from the image bearing member. The transfer unit includes a developing device contact-and-separation mechanism for moving the developing device between the contact position and the spaced position.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Takeo Kawanami
  • Patent number: 9600219
    Abstract: The present invention is directed to an image forming apparatus including a switch configured to shift the image forming apparatus from a power-off state to a first power state.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takaaki Miyata
  • Patent number: 9599800
    Abstract: Provided is a zoom lens, including, in order from an object side to an image side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; and a rear lens group including at least one lens unit, in which an interval between each pair of adjacent lens units is changed during zooming, and materials of lenses included in a lens unit arranged closest to the image side are appropriately set.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kohei Kimura
  • Patent number: 9599960
    Abstract: The imaging apparatus includes an optical system dividing light into object and reference beams and causing the object beam and the reference beam to interfere with each other to form interference fringes on an image sensor. A processor performs multiple imaging processes for the interference fringes with different incident angles of the object beam to an object, a first process to acquire a transmitted wavefront for each incident angle and a second process to calculate a three-dimensional refractive index distribution from the transmitted wavefronts. The apparatus includes a modulator changing a phase distribution of light in any one of an optical path from a light source to a dividing element, a reference beam path and an optical path from a combining element to the image sensor and causes the modulator to change the phase distribution in at least one of the multiple imaging processes.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: March 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Akira Eguchi