Patents by Inventor Naohiro Ueyama

Naohiro Ueyama 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).

  • Patent number: 9242487
    Abstract: A printing apparatus includes a roll-out motor that rotates a roll body supported by a roll body support unit, a feed roller pair that transports a paper drawn from the roll body, and a load measuring unit that measures a rotation load of the roll body when the roll body is rotated at a low speed and a rotation load of the roll body when the roll body is rotated at a high speed. A rotation angle range in which the roll body is rotated at the high speed is greater than a rotation angle range in which the roll body is rotated at the low speed. In one rotation of the roll body, at least a part of the rotation angle range of the roll body rotated at the low speed overlaps with the rotation angle range of the roll body rotated at the high speed.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: January 26, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Kenji Hatada, Naohiro Ueyama, Ryo Hamano, Naoto Hayakawa
  • Patent number: 9097381
    Abstract: A leg unit includes a positioning pin projecting from an upper surface of a seat plate thereof, and an image forming unit includes a positioning hole formed on a mounting surface thereof. Delimiting portions project downward from the lower ends of left and right lateral faces of the image forming unit. The delimiting portions oppose respective outer lateral faces of the seat plate so as to restrict a relative movement of the image forming unit. A projecting portion is provided on the outer lateral face of the seat plate. The positioning pin can be fitted in the positioning hole by engaging the projecting portion with a recess of the delimiting portion. The delimiting portion includes a stopper formed on the respective sides of the recess in the longitudinal direction thereof, for restricting the sliding motion of the projecting portion along the lower end face of the delimiting portion.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: August 4, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Naohiro Ueyama, Hiroaki Fukumoto
  • Patent number: 9096401
    Abstract: A recording apparatus includes a plurality of roll-type medium loading unit that are positioned so that a roll-type medium can be loaded therein from a front of the recording apparatus; a transportation unit that transports the medium which has been fed from the roll-type medium loading unit in the downstream direction; and a recording unit that performs recording on the transported medium, wherein the roll-type medium loading unit includes a first roll-type medium loading unit that is disposed at a position above the recording unit and a second roll-type medium loading unit that is disposed at a position below the recording unit.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: August 4, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Naohiro Ueyama, Hideo Mikuriya, Masahiro Ogihara
  • Patent number: 8882104
    Abstract: A medium receiving device includes: a medium holding member having a medium receiving surface that receives a part on the leading edge side in a discharge direction of a cut sheet; a medium edge restricting member including a restricting portion that restricts movement of the leading edge of the cut sheet to the discharge direction and a guidance portion that makes contact with the medium receiving surface so as to guide the leading edge from the medium receiving surface to the restricting portion; and a connecting bar that moves a plurality of medium edge restricting members together between a restricting position where the guidance portion makes contact with the medium receiving surface so as to guide the leading edge to the restricting portion and a non-restricting position where the guidance portion is separate from the medium receiving surface and does not guide the leading edge to the restricting portion.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: November 11, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Naohiro Ueyama
  • Patent number: 8781385
    Abstract: A medium-feeding device includes: a feeding unit for feeding a fed medium in a feed direction, a first separating unit provided downstream in the feed direction relative to the feeding unit to separate a multi-fed medium; a second separating unit provided downstream relative to the first separating unit to switch between a compressive holding state in which the multi-fed medium is compressively held, and a released state in which compressive holding is released; and a contact part provided downstream relative to the second separating unit to switch between a protruding state and a retracted state relative to a feed path for guiding the fed medium. The medium-feeding device has a first separating mode, in which separation of the multi-fed medium is performed using the first separating unit, the second separating unit, and the contact part, and a second separating mode, in which separation is performed using the first separating unit.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: July 15, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Naohiro Ueyama, Kenji Yanagishita, Hiroshi Shiohara
  • Patent number: 8622385
    Abstract: A medium receiving device includes a support shaft that extends in a width direction of the sheet that intersects with an ejection direction of the sheet at a position spaced from the apparatus body, a locking member that is fixedly provided at a position which is lower than the apparatus body in the gravity direction and on the side of the apparatus body with respect to the support shaft and extends in the width direction of the sheet, and a medium holding member that is hung between the support shaft and the locking member so as to form a receiving surface for the sheet which falls thereon and is capable of holding the sheet on the receiving surface, wherein the support shaft moves between a first position and a second position with rotative displacement about a rotation shaft that extends in the width direction of the sheet.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: January 7, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Naohiro Ueyama, Hideo Mikuriya, Masahiro Ogihara, Ryota Takenaka
  • Publication number: 20130306784
    Abstract: A recording apparatus includes a plurality of roll-type medium loading unit that are positioned so that a roll-type medium can be loaded therein from a front of the recording apparatus; a transportation unit that transports the medium which has been fed from the roll-type medium loading unit in the downstream direction; and a recording unit that performs recording on the transported medium, wherein the roll-type medium loading unit includes a first roll-type medium loading unit that is disposed at a position above the recording unit and a second roll-type medium loading unit that is disposed at a position below the recording unit.
    Type: Application
    Filed: March 21, 2013
    Publication date: November 21, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Naohiro Ueyama, Hideo Mikuriya, Masahiro Ogihara
  • Publication number: 20130286124
    Abstract: A medium receiving device includes: a medium holding member having a medium receiving surface that receives a part on the leading edge side in a discharge direction of a cut sheet; a medium edge restricting member including a restricting portion that restricts movement of the leading edge of the cut sheet to the discharge direction and a guidance portion that makes contact with the medium receiving surface so as to guide the leading edge from the medium receiving surface to the restricting portion; and a connecting bar that moves a plurality of medium edge restricting members together between a restricting position where the guidance portion makes contact with the medium receiving surface so as to guide the leading edge to the restricting portion and a non-restricting position where the guidance portion is separate from the medium receiving surface and does not guide the leading edge to the restricting portion.
    Type: Application
    Filed: February 28, 2013
    Publication date: October 31, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Naohiro Ueyama
  • Publication number: 20130286125
    Abstract: A medium receiving device includes a support shaft that extends in a width direction of the sheet and supports a medium holding member that is capable of receiving and holding the sheet which falls on the medium holding member, a rotative arm mechanism that is disposed at each end of the support shaft in the longitudinal direction and allows the support shaft to be displaced between a receiving position that allows the medium holding member to be capable of receiving the sheets and a picking-up position that is spaced from the receiving position in a direction that intersects with the longitudinal direction of the support shaft, and a universal joint that connect the support shaft and the rotative arm mechanism.
    Type: Application
    Filed: March 11, 2013
    Publication date: October 31, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hideo Mikuriya, Naohiro Ueyama
  • Publication number: 20130277908
    Abstract: A medium receiving device includes a support shaft that extends in a width direction of the sheet that intersects with an ejection direction of the sheet at a position spaced from the apparatus body, a locking member that is fixedly provided at a position which is lower than the apparatus body in the gravity direction and on the side of the apparatus body with respect to the support shaft and extends in the width direction of the sheet, and a medium holding member that is hung between the support shaft and the locking member so as to form a receiving surface for the sheet which falls thereon and is capable of holding the sheet on the receiving surface, wherein the support shaft moves between a first position and a second position with rotative displacement about a rotation shaft that extends in the width direction of the sheet.
    Type: Application
    Filed: February 28, 2013
    Publication date: October 24, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Naohiro Ueyama, Hideo Mikuriya, Masahiro Ogihara, Ryota Takenaka
  • Publication number: 20130264457
    Abstract: A leg unit includes a positioning pin projecting from an upper surface of a seat plate thereof, and an image forming unit includes a positioning hole formed on a mounting surface thereof. Delimiting portions project downward from the lower ends of left and right lateral faces of the image forming unit. The delimiting portions oppose respective outer lateral faces of the seat plate so as to restrict a relative movement of the image forming unit. A projecting portion is provided on the outer lateral face of the seat plate. The positioning pin can be fitted in the positioning hole by engaging the projecting portion with a recess of the delimiting portion. The delimiting portion includes a stopper formed on the respective sides of the recess in the longitudinal direction thereof, for restricting the sliding motion of the projecting portion along the lower end face of the delimiting portion.
    Type: Application
    Filed: February 28, 2013
    Publication date: October 10, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Naohiro Ueyama, Hiroaki Fukumoto
  • Patent number: 8328704
    Abstract: A roller for transporting a recording medium includes an inner layer having a shaft hole through which a rotating shaft passes; and an outer layer formed outside the inner layer and brought into contact with the recording medium. At least a first end surface of the inner layer in a direction along the rotating shaft is located inside the outer layer remote from end surfaces of the outer layer in the direction along the rotating shaft.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: December 11, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Toshikazu Kotaka, Naohiro Ueyama, Yasuo Motohashi, Satoru Watanabe, Seiichi Maruyama, Shoichi Horiuchi, Mayumi Kinoshita
  • Publication number: 20110236113
    Abstract: A medium-feeding device includes: a feeding unit for feeding a fed medium in a feed direction, a first separating unit provided downstream in the feed direction relative to the feeding unit to separate a multi-fed medium; a second separating unit provided downstream relative to the first separating unit to switch between a compressive holding state in which the multi-fed medium is compressively held, and a released state in which compressive holding is released; and a contact part provided downstream relative to the second separating unit to switch between a protruding state and a retracted state relative to a feed path for guiding the fed medium. The medium-feeding device has a first separating mode, in which separation of the multi-fed medium is performed using the first separating unit, the second separating unit, and the contact part, and a second separating mode, in which separation is performed using the first separating unit.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 29, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Naohiro UEYAMA, Kenji YANAGISHITA, Hiroshi SHIOHARA
  • Patent number: 7913998
    Abstract: In a recording material guiding device, a second guide member is comprised of a hopper swinging surface, an edge guide member including a second side end guide member, and a liftup preventing guide. The hopper swinging surface is engaged in an opening provided in a side surface of a reference end guide serving as a first guide member. The second guide member can be slid in a main scanning direction with respect to the reference end guide (first guide member). During recording, a gap can be formed between the second side end guide member and a side end of the recording paper by sliding the second side end guide member from a first position to a second position, so that frictional contact can be prevented at the side end of the recording paper on the second side end guide member side.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: March 29, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Yasumichi Okuda, Yoshihiro Kobayashi, Kazuhito Hori, Naohiro Ueyama
  • Patent number: 7547014
    Abstract: In a recording material guiding device, a second guide member 606 is comprised of a hopper swinging surface 23c, an edge guide member 25 including a second side end guide member 25a, and a liftup preventing guide 251. The hopper swinging surface 23c is engaged in an opening provided in a side surface of a reference end guide 24 serving as a first guide member 603. The second guide member 606 can be slid in a main scanning direction with respect to the reference end guide 24 (first guide member 603). During recording a gap d1 can be formed between the second side end guide member 25a and a side end Pa of the recording paper P by sliding the second side end guide member 25a from a first position 604 to a second position 605, so that frictional contact can be prevented at the side end Pa of the recording paper P on the second side end guide member side.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: June 16, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Yasumichi Okuda, Yoshihiro Kobayashi, Kazuhito Hori, Naohiro Ueyama
  • Publication number: 20090140485
    Abstract: In a recording material guiding device, a second guide member is comprised of a hopper swinging surface, an edge guide member including a second side end guide member, and a liftup preventing guide. The hopper swinging surface is engaged in an opening provided in a side surface of a reference end guide serving as a first guide member. The second guide member can be slid in a main scanning direction with respect to the reference end guide (first guide member). During recording, a gap can be formed between the second side end guide member and a side end of the recording paper by sliding the second side end guide member from a first position to a second position, so that frictional contact can be prevented at the side end of the recording paper on the second side end guide member side.
    Type: Application
    Filed: November 26, 2008
    Publication date: June 4, 2009
    Applicant: Seiko Epson Corporation
    Inventors: Yasumichi Okuda, Yoshihiro Kobayashi, Kazuhito Hori, Naohiro Ueyama
  • Patent number: 7540495
    Abstract: A feeder is adapted to feed a medium to a down stream section in a first direction. A feeding tray has a supporting face adapted to support the medium thereon and formed with a groove. A first edge guide is provided on the supporting face so as to be slidable in a second direction perpendicular to the first direction. A second edge guide is provided on the supporting face so as to oppose to the first edge guide, so that the medium is placed therebetween. An auxiliary guide body is provided in the first edge guide and having a projection slidably engaged with the groove, the auxiliary guide body being slidable relative to the first edge guide in the first direction and a third direction opposite to the first direction, in accordance with the slide movement of the first edge guide in the second direction by way of the engagement between the projection and the groove.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: June 2, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Yasumichi Okuda, Yoshihiro Kobayashi, Kazuhito Hori, Naohiro Ueyama
  • Patent number: 7515520
    Abstract: A recording apparatus including a recording unit that performs recording on a recording medium; a transporting unit capable of transporting the recording medium; a first guide member and a second guide member disposed facing the first guide member having an section of a transport path of the recording medium disposed therebetween; and an optical sensor including a light-emitting portion and a light-receiving portion and having an optical axis that traverses the transport path of the recording medium between the first and second guide members. At least one of the light-emitting portion and the light-receiving portion projects from an outer side of the transport path towards the first guide member. The first guide member has a cutout having an opening where the light-emitting portion or the light-receiving portion is disposed. The opening is covered with a sheet member except for an area where the optical axis of the optical sensor extends.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: April 7, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Toshikazu Kotaka, Naohiro Ueyama, Yasuo Motohashi, Satoru Watanabe
  • Patent number: 7422206
    Abstract: A feeding tray supports a plurality of media the media thereon. A hopper is provided on the feeding tray so as to be movable in a first direction for pushing the media toward a feeding roller so that a top one of the media comes in contact with the feeding roller, and in a second direction opposite to the first direction. A separator separates a first group including at least one of the media which is situated under the top one of the media from the top one, so that only the top one is fed to the downstream section by rotation of the feeding roller. A returning lever is pivotable interlockingly with the feeding roller and adapted to return a second group including at least one of the media in the first group, which has been proceeded from a prescribed position to the downstream section together with the top one of the media, to the feeding tray. A holder supports a third group including at least one of the media in the first group which is situated under the second group.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: September 9, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Yasumichi Okuda, Yoshihiro Kobayashi, Kazuhito Hori, Naohiro Ueyama
  • Publication number: 20080043580
    Abstract: A recording apparatus includes a recording unit that performs recording on a recording medium; a transporting unit disposed upstream of the recording unit and transporting the recording medium downstream; a first guide member and a second guide member disposed facing the first guide member, the first and second guide members having an upstream section of a transport path of the recording medium disposed therebetween; and an optical sensor including a light-emitting portion and a light-receiving portion and having an optical axis that traverses the transport path of the recording medium between the first and second guide members. At least one of the light-emitting portion and the light-receiving portion projects from an outer side of the transport path towards the first guide member. The first guide member has a cutout having an opening that faces the second guide member. The cutout has the light-emitting portion or the light-receiving portion disposed therein.
    Type: Application
    Filed: August 17, 2007
    Publication date: February 21, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Toshikazu KOTAKA, Naohiro UEYAMA, Yasuo MOTOHASHI, Satoru WATANABE