Patents by Inventor Katsumi Okamoto

Katsumi Okamoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130050382
    Abstract: There is provided a recording apparatus including an apparatus main body provided with a recording unit which performs recording on a recording medium, an extension unit provided with a containing unit of the recording medium, which is detachably attached to a lower portion of the apparatus main body on a side of a weight direction of the apparatus main body, main body legs which are provided on the lower portion of the apparatus main body and are in contact with a placement surface when the apparatus main body is placed on the placement surface, and gap forming members which are provided in the extension unit, have higher rigidity exhibiting less compressional deformation as compared with the main body legs, and form a gap between the lower portion of the apparatus main body and the extension unit while being in contact with the lower portion of the apparatus main body.
    Type: Application
    Filed: August 22, 2012
    Publication date: February 28, 2013
    Applicant: Seiko Epson Corporation
    Inventor: Katsumi Okamoto
  • Publication number: 20130050378
    Abstract: There is provided a recording apparatus including an apparatus main body including a first placement portion on which a recording medium is placed, a recording unit which performs recording on the recording medium, and a first transport path through which the recording medium is transported from the first placement portion to the recording unit, an extension unit including a second placement portion, which is detachably attached to the apparatus main body, on which the recording medium is placed, and a second transport path capable of communicating from the second placement portion to the first transport path of the apparatus main body, and a detachable member detachably provided in the apparatus main body and exposing at least a part of the second transport path when detached from the apparatus main body.
    Type: Application
    Filed: August 16, 2012
    Publication date: February 28, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Katsumi OKAMOTO
  • Publication number: 20120263505
    Abstract: A developing device includes a toner particle-bearing roller that bears toner particles on its surface and develops a latent image borne by an image-bearing member with those toner particles, the toner particle-bearing roller has a projection portion disposed on its surface, the projection portion having a top surface having a flat portion, and a width of the top surface being equal to or more than a volume average particle diameter of the toner particles.
    Type: Application
    Filed: October 11, 2011
    Publication date: October 18, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoichi YAMADA, Tomohiro ARUGA, Noboru SAKURAI, Katsumi Okamoto, Hiroshi Kato, Masanao Kunugi, Takatomo Fukumoto
  • Publication number: 20120218348
    Abstract: A liquid ejection apparatus includes an apparatus main body, a liquid ejection head which is provided on the apparatus main body and ejects liquid onto a recording medium, a draw-out path which is provided on the apparatus main body, a waste liquid unit which is provided on the draw-out path in a detachable manner and reserves waste liquid wastefully ejected from the liquid ejection head, an opening from which a transportation path for transporting the recording medium is exposed, and an opening/closing unit which is provided to be capable of opening and closing the opening, and at least a part of which is located on the draw-out path and covers at least a part of the waste liquid unit in a state where the waste liquid unit is attached to the draw-out path and the opening is closed.
    Type: Application
    Filed: February 27, 2012
    Publication date: August 30, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Katsumi OKAMOTO, Masanori NAKATA, Yoshikane TSUCHIHASHI, Takafumi OGIMURA
  • Patent number: 8087170
    Abstract: A method for manufacturing a developing agent carrier of a hollow or solid cylindrical shape having an outer peripheral surface and an irregularity section formed on the outer peripheral surface to carry a developing agent is provided. The method comprises a step of preparing a base material of a hollow or solid cylindrical shape which is to become the developing agent carrier, the base material having an outer peripheral surface; and a step of forming the irregularity section by pressing dice for formation of the irregularity section against the outer peripheral surface of the base material.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: January 3, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Noboru Sakurai, Yoichi Yamada, Junichi Nakahara, Masanao Kunugi, Tomohiro Aruga, Katsumi Okamoto
  • Publication number: 20110267393
    Abstract: A printer includes a heating roller unit that heats recording paper at a position downstream of a recording head, which is provided at an upstream position, in the direction of the transportation of the recording paper. The recording head ejects ink to the recording paper that is transported from an upstream side to a downstream side. The heating roller unit is disposed along the direction of the width of the recording paper, which intersects with the transportation direction thereof. The heating roller unit is divided into a plurality of areas in the width direction. Heat applied by first areas of the plurality of areas to the recording paper is different from heat applied by second areas, which are adjacent to the first areas in the width direction, to the recording paper.
    Type: Application
    Filed: April 28, 2011
    Publication date: November 3, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Katsumi OKAMOTO
  • Publication number: 20110254893
    Abstract: The invention provides a liquid ejecting apparatus which can prevent a target having liquid ejected thereon from warping irrespective of the type of the target. An ink jet printer includes a recording head configured to eject ink from a nozzle formed on a nozzle-formed surface onto a recording sheet being transported from an upstream side to a downstream side, and a plurality of supporting belts arranged so as to oppose the nozzle-formed surface and each having a supporting portion extending along the direction of transport of the recording sheet. The respective supporting belts are arranged so as to be capable of moving along the width direction intersecting the direction of transport of the recording sheet.
    Type: Application
    Filed: April 11, 2011
    Publication date: October 20, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takamasa IKAGAWA, Katsumi OKAMOTO, Makoto SATO
  • Patent number: 7974549
    Abstract: A developing device includes: a developing roller on the surface of which intersecting inclined grooves are formed by rolling working; and a seal member which comes into contact with the developing roller, wherein ridge portions of a convex portion surrounded by the inclined grooves of the surface of the developing roller are formed such that rotational resistance due to the contact of the seal member on the downstream side of a rotation direction opposite to a rotation direction of the developing roller at the time of development is larger than rotational resistance due to the contact of the seal member on the downstream side of a rotation direction of the developing roller at the time of development, and at the time of refreshing of the seal member, the developing roller is rotated in the opposite direction to a direction at the time of development.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: July 5, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Takeshi Aoki, Katsumi Okamoto, Takatomo Fukumoto
  • Patent number: 7885554
    Abstract: A developing device that can be mounted to and dismounted from a mounting and dismounting section provided in an image forming apparatus main unit, the developing device includes: a developing device main unit; a positioning member for positioning the developing device main unit with respect to the mounting and dismounting section by engaging the mounting and dismounting section when the developing device is mounted to the mounting and dismounting section, the positioning member being fixed on a one end side in a longitudinal direction of the developing device main unit; a coupling member that is to be coupled to the mounting and dismounting section when the developing device is mounted to the mounting and dismounting section, the coupling member being attached to the other end side in the longitudinal direction of the developing device main unit in such a manner that its relative position to the developing device main unit can be changed; and an element capable of communication in a noncontacting manner with
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: February 8, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Junji Shirokoshi, Katsumi Okamoto, Yuichi Segawa, Satoru Miyamoto, Yoichi Yamada, Yasushige Hori, Takatomo Fukumoto
  • Patent number: 7881644
    Abstract: A developing device includes: a developer carrier that carries toner thereon; a toner supply member that supplies toner to the developer carrier; a development chamber having the developer carrier and the toner supply member; a replaceable toner cartridge that supplies toner to the development chamber and collects toner from the development chamber; and a contact member that is in contact with the toner supply member to form a nip portion. At the time of replacement to the toner cartridge that contains new toner therein, the new toner is supplied from the toner cartridge into the development chamber and is made to pass through a nip portion between the toner supply member and the contact member within the development chamber, and then nip-passed toner is collected from the development chamber into the toner cartridge.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: February 1, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Katsumi Okamoto, Koji Migita, Makoto Sato, Takeshi Aoki, Masashi Nakatsu
  • Patent number: 7881641
    Abstract: A developing cartridge includes: a developer carrier which carries toner; a toner supply member which supplies the toner to the developer carrier; a regulation member which regulates an amount of toner on the developer carrier; a developing chamber which has the developer carrier and the toner supply member; a transport section which is connected to an upper portion and a lower portion of the developing chamber and transports the toner from the lower portion of the developing chamber to the upper portion of the developing chamber; and a transport member which is disposed inside the transport section and transports the toner while agitating the toner. A capacity of the transport section is larger than a capacity of the developing chamber.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: February 1, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Takeshi Aoki, Katsumi Okamoto, Koji Migita, Makoto Sato, Masashi Nakatsu
  • Patent number: 7822368
    Abstract: In a container is adapted to be coupled with another container, a first wall member defines a first storage space adapted to store developing agent for forming an image on a recording medium. A first coupler is adapted to be coupled with a second coupler provided with the first another container. A first communicator is operable to communicate the first storage space with a second storage space provided with the first another container by way of the first coupler and the second coupler, when the container is coupled with another container.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: October 26, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Katsumi Okamoto, Hiroshi Kato, Takami Naruta
  • Patent number: 7783234
    Abstract: A developer cartridge, including: a container for containing developer; a shutter that is supported so that the shutter can linearly move relative to the container, and that opens and closes by moving linearly; a handle member that is supported so that the handle member can rotationally move relative to the container, and that includes a handle; and a conversion mechanism by which rotational-movement force that rotationally moves the handle member is converted into linear-movement force that linearly moves the shutter.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: August 24, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Katsumi Okamoto, Toshiaki Oshima, Kazuhiro Ichikawa, Takatomo Fukumoto
  • Publication number: 20100209126
    Abstract: A developing device includes: a developing roller on the surface of which intersecting inclined grooves are formed by rolling working; and a seal member which comes into contact with the developing roller, wherein ridge portions of a convex portion surrounded by the inclined grooves of the surface of the developing roller are formed such that rotational resistance due to the contact of the seal member on the downstream side of a rotation direction opposite to a rotation direction of the developing roller at the time of development is larger than rotational resistance due to the contact of the seal member on the downstream side of a rotation direction of the developing roller at the time of development, and at the time of refreshing of the seal member, the developing roller is rotated in the opposite direction to a direction at the time of development.
    Type: Application
    Filed: January 12, 2010
    Publication date: August 19, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi AOKI, Katsumi OKAMOTO, Takatomo FUKUMOTO
  • Publication number: 20100200173
    Abstract: A coating film peeling apparatus for resin material includes: a peeling cylinder, a peeling roll installed therein with a space for a peeling process along an inner wall of the peeling cylinder, a resistance lid disposed to block a discharge port of the peeling cylinder, and a pressure adjustment part for adjusting an outflow rate and internal pressure of the peeling cylinder. The peeling cylinder is constituted by a polygonal-shaped angular columnar body having, as coating film pass-through holes, rows K of small holes and rows L of small holes and projection rings (angular embossments) provided alternately in multiple rows along a direction perpendicular to a rotating direction of the peeling roll.
    Type: Application
    Filed: February 4, 2010
    Publication date: August 12, 2010
    Applicant: SATAKE CORPORATION
    Inventors: Hidekazu Furukawa, Katsumi Okamoto
  • Patent number: 7761037
    Abstract: An image formation apparatus includes a containing section that contains a developer and that has an opening at which a developer carrier is exposed. The developer carrier rotates at a faster first speed or a slower second speed. When a detected height of developer in the containing section is at a replenishment start level and the developer carrier is rotating at the first speed, a replenishing member replenishes developer until the height of the developer reaches a replenishment end level. When the detected height of developer is at the replenishment start level and the developer carrier is rotating at the second speed, the developer is replenished by a predetermined amount.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: July 20, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Kazuyoshi Ohashi, Katsumi Okamoto
  • Publication number: 20100021213
    Abstract: In a container is adapted to be coupled with another container, a first wall member defines a first storage space adapted to store developing agent for forming an image on a recording medium. A first coupler is adapted to be coupled with a second coupler provided with the first another container. A first communicator is operable to communicate the first storage space with a second storage space provided with the first another container by way of the first coupler and the second coupler, when the container is coupled with another container.
    Type: Application
    Filed: October 6, 2009
    Publication date: January 28, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Katsumi OKAMOTO, Hiroshi KATO, Takami NARUTA
  • Patent number: 7636538
    Abstract: A layer-thickness restriction member, including: an abutting surface that is for abutting against a developer-bearing body in order to restrict a layer thickness of developer borne by the developer-bearing body; and a flash that is located on a side close to a non-abutting surface that is located on an opposite side from the abutting surface in a thickness direction of the layer-thickness restriction member.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: December 22, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Katsumi Okamoto, Hidetoshi Sato
  • Patent number: 7620348
    Abstract: In a container is adapted to be coupled with another container, a first wall member defines a first storage space adapted to store developing agent for forming an image on a recording medium. A first coupler is adapted to be coupled with a second coupler provided with the first another container. A first communicator is operable to communicate the first storage space with a second storage space provided with the first another container by way of the first coupler and the second coupler, when the container is coupled with another container.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: November 17, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Katsumi Okamoto, Hiroshi Kato, Takami Naruta
  • Patent number: D651624
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: January 3, 2012
    Assignee: Satake Corporation
    Inventors: Hidekazu Furukawa, Katsumi Okamoto