Patents by Inventor Naomi Sugimoto

Naomi Sugimoto 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: 20210127097
    Abstract: An image projection device includes a projector configured to project an image; and an operation unit configured to receive an operation performed by an operator. The projector is in a projecting state while the operation unit is receiving a pressing operation performed by the operator, and the projector is in a non-projecting state while the operation unit is not receiving a pressing operation performed by the operator.
    Type: Application
    Filed: October 21, 2020
    Publication date: April 29, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Tomoko TAKAHASHI, Yuuji WADA, Yu YONEDA, Daisuke TOMITA, Kunihiko NISHIOKA, Hideki KOSUGI, Yasukazu KITAMURA, Toshihiro HAMAMURA, Takaya MURAISHI, Naomi SUGIMOTO, Yasunari HARADA
  • Publication number: 20200121811
    Abstract: Provided is a method for producing a radiohalogen-labeled compound, the method comprises: a step in which a radiohalogen-labeling precursor compound (S-L) having a leaving group (L) capable of being nucleophilically substituted by a radioactive halide ion (X?) is subjected to a radiohalogenation reaction to obtain a reaction mixture RM1 which contains the radiohalogen-labeling precursor compound (S-L) and a reaction product (S—X) resulting from the radiohalogenation reaction; a step in which the reaction mixture RM1 is mixed with a polyvalent acid or a salt thereof to obtain a reaction mixture RM2; and a step in which the reaction product (S—X) is purified from the reaction mixture RM2 by a solid phase extraction method.
    Type: Application
    Filed: May 28, 2018
    Publication date: April 23, 2020
    Applicant: NIHON MEDI-PHYSICS CO., LTD.
    Inventors: Yuki OKUMURA, Daisaku NAKAMURA, Masato KIRIU, Hiroaki ICHIKAWA, Gota TONOYA, Naomi SUGIMOTO
  • Patent number: 10088781
    Abstract: An image forming apparatus includes a transfer member configured to abut against an image carrier for carrying a toner image to form a transfer nip; and a power supply configured to output a bias voltage for transferring the toner image on the image carrier onto a recording medium nipped in the transfer nip. The bias voltage includes a first voltage for transferring the toner image from the image carrier onto the recording medium in a transfer direction and a second voltage having an opposite polarity of the first voltage, the first and the second voltages being alternately output. A time-averaged value of the bias voltage is set to a polarity in the transfer direction and is set in the transfer direction side with respect to a median between a maximum and a minimum of the bias voltage.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: October 2, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinya Tanaka, Naomi Sugimoto, Haruo Iimura, Shinji Aoki, Yasuhiko Ogino, Kazuchika Saeki, Keigo Nakamura
  • Patent number: 10073386
    Abstract: An image forming apparatus including an image bearer; a nip forming member, a nip width changing device, a power source; and a controller. The controller switches between a first mode and a second mode according to a predetermined condition. In the first mode, a duty of the transfer bias is a first duty and a width of a transfer nip is a first width. In the second mode, the duty of the transfer bias is a second duty lower than the first duty and the width of the transfer nip is a second width greater than the first width. The duty is (T?Tt)/T×100% where T denotes one cycle of the transfer bias, and Tt denotes a time period, in which the transfer bias is on a transfer-directional side relative to a time-averaged value of the transfer bias, in the one cycle.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: September 11, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Naomi Sugimoto, Hirokazu Ishii, Kenji Sugiura, Atsushi Nagata, Takehide Mizutani, Keigo Nakamura, Yuuji Wada, Naoto Kochi, Shinya Tanaka
  • Patent number: 10031463
    Abstract: A belt control device includes a holder to movably support a rotation shaft of at least one of the plurality of rotators around which a belt is looped, a contact part to contact an end of the belt as the belt moves in a belt width direction, a stationary frame part disposed facing the holder, a shaft moving device to move the rotation shaft as the belt moves, and at least one projection disposed on one of the stationary frame part and the holder. The projection is to contact the other of the stationary frame part and the holder. The projection includes a long projection having a contact portion extending in a shaft moving direction in which the rotation shaft moves, and the contact portion is contactable with the other of the stationary frame part and the holder.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: July 24, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Hozumi, Naomi Sugimoto, Hisashi Kikuchi
  • Publication number: 20170299987
    Abstract: An image forming apparatus including an image bearer; a nip forming member, a nip width changing device, a power source; and a controller. The controller switches between a first mode and a second mode according to a predetermined condition. In the first mode, a duty of the transfer bias is a first duty and a width of a transfer nip is a first width. In the second mode, the duty of the transfer bias is a second duty lower than the first duty and the width of the transfer nip is a second width greater than the first width. The duty is (T?Tt)/T×100% where T denotes one cycle of the transfer bias, and Tt denotes a time period, in which the transfer bias is on a transfer-directional side relative to a time-averaged value of the transfer bias, in the one cycle.
    Type: Application
    Filed: April 10, 2017
    Publication date: October 19, 2017
    Inventors: Naomi SUGIMOTO, Hirokazu Ishii, Kenji Sugiura, Atsushi Nagata, Takehide Mizutani, Keigo Nakamura, Yuuji Wada, Naoto Kochi, Shinya Tanaka
  • Publication number: 20170242387
    Abstract: A belt control device includes a holder to movably support a rotation shaft of at least one of the plurality of rotators around which a belt is looped, a contact part to contact an end of the belt as the belt moves in a belt width direction, a stationary frame part disposed facing the holder, a shaft moving device to move the rotation shaft as the belt moves, and at least one projection disposed on one of the stationary frame part and the holder. The projection is to contact the other of the stationary frame part and the holder. The projection includes a long projection having a contact portion extending in a shaft moving direction in which the rotation shaft moves, and the contact portion is contactable with the other of the stationary frame part and the holder.
    Type: Application
    Filed: February 1, 2017
    Publication date: August 24, 2017
    Inventors: Yoshiki HOZUMI, Naomi SUGIMOTO, Hisashi KIKUCHI
  • Patent number: 9708143
    Abstract: A belt device for an image forming apparatus, includes an endless belt; a first and second support rollers, each including a rotary shaft, that support the belt with tension; a contacted member that contacts the belt; a shaft displacement device to displace any of the rotary shafts of the support rollers; and a main rotary shaft disposed at a side of the rotary shaft of the first support roller moved by the shaft displacement device along a stretching direction of the stretched surface of the endless belt that the contacted member contacts, relative to a contact portion between the endless belt and the contacted member, and at an opposite side of the contacted member in a direction perpendicular to the stretching direction of the endless belt. As the first support roller and the second roller rotate about the main rotary shaft, the endless belt is separated from the contacted member.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: July 18, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Hozumi, Naoki Iwaya, Masaharu Furuya, Yasufumi Takahashi, Naomi Sugimoto, Kazuchika Saeki
  • Publication number: 20170146931
    Abstract: An image forming apparatus includes a transfer member configured to abut against an image carrier for carrying a toner image to form a transfer nip; and a power supply configured to output a bias voltage for transferring the toner image on the image carrier onto a recording medium nipped in the transfer nip. The bias voltage includes a first voltage for transferring the toner image from the image carrier onto the recording medium in a transfer direction and a second voltage having an opposite polarity of the first voltage, the first and the second voltages being alternately output. A time-averaged value of the bias voltage is set to a polarity in the transfer direction and is set in the transfer direction side with respect to a median between a maximum and a minimum of the bias voltage.
    Type: Application
    Filed: December 23, 2016
    Publication date: May 25, 2017
    Inventors: Shinya TANAKA, Naomi Sugimoto, Haruo Iimura, Shinji Aoki, Yasuhiko Ogino, Kazuchika Saeki, Keigo Nakamura
  • Patent number: 9599934
    Abstract: An image forming apparatus includes a toner image forming device to form a toner image on a rotatable toner image bearer, a looped belt to carry a recording medium, a support roller to rotate the belt, a pressing member to press the belt against the toner image bearer, a transfer electric field generator to form an electric field to transfer the toner image onto the recording medium, and a contact member to contact an end surface of the belt as the belt moves to one side in a belt width direction. The belt includes a first portion pressed against the toner image bearer by the pressing member and a second portion adjoining the first portion. A relative position of the support roller relative to the toner image bearer and the pressing member is determined such that the second portion of the belt contacts the toner image bearer.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: March 21, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Hozumi, Naomi Sugimoto, Kazuchika Saeki, Yasufumi Takahashi, Naoki Iwaya, Masaharu Furuya
  • Patent number: 9561912
    Abstract: A belt tracking system for controlling the lateral position of a movable belt entrained about a plurality of generally parallel rollers for moving in a trans-axial direction perpendicular to an axial direction in which the rollers extend parallel to each other includes a roller shaft, a slidable member, and a rotation restrictor. The roller shaft extends outward in the axial direction from an axial end of a specific one of the plurality of generally parallel rollers. The slidable member is slidably disposed around the roller shaft to move along the roller shaft as the belt moves laterally outward in the axial direction. The rotation restrictor is disposed adjacent to the slidable member to restrict rotation of the slidable member around the roller shaft.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: February 7, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Hozumi, Naomi Sugimoto, Yuuji Sawai, Kazuchika Saeki
  • Patent number: 9563153
    Abstract: An image forming apparatus includes a transfer member configured to abut against an image carrier for carrying a toner image to form a transfer nip; and a power supply configured to output a bias voltage for transferring the toner image on the image carrier onto a recording medium nipped in the transfer nip. The bias voltage includes a first voltage for transferring the toner image from the image carrier onto the recording medium in a transfer direction and a second voltage having an opposite polarity of the first voltage, the first and the second voltages being alternately output. A time-averaged value of the bias voltage is set to a polarity in the transfer direction and is set in the transfer direction side with respect to a median between a maximum and a minimum of the bias voltage.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: February 7, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinya Tanaka, Naomi Sugimoto, Haruo Iimura, Shinji Aoki, Yasuhiko Ogino, Kazuchika Saeki, Keigo Nakamura
  • Patent number: 9541881
    Abstract: A recording medium conveying device includes an endless belt to convey a recording medium, a plurality of support rollers around which the belt is wound, to rotate the belt, and a cleaner in contact with the belt to clean the belt. One of the plurality of support rollers is a separation support roller, mounted on a tiltable rotary shaft, to separate the recording medium from the belt using a curvature of the separation support roller. The separation support roller includes a contact member to contact an edge of the belt when the belt laterally moves toward one side of the belt.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: January 10, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Hozumi, Naomi Sugimoto, Kazuchika Saeki
  • Publication number: 20160251166
    Abstract: A belt tracking system for controlling the lateral position of a movable belt entrained about a plurality of generally parallel rollers for moving in a trans-axial direction perpendicular to an axial direction in which the rollers extend parallel to each other includes a roller shaft, a slidable member, and a rotation restrictor. The roller shaft extends outward in the axial direction from an axial end of a specific one of the plurality of generally parallel rollers. The slidable member is slidably disposed around the roller shaft to move along the roller shaft as the belt moves laterally outward in the axial direction. The rotation restrictor is disposed adjacent to the slidable member to restrict rotation of the slidable member around the roller shaft.
    Type: Application
    Filed: May 13, 2016
    Publication date: September 1, 2016
    Inventors: Yoshiki HOZUMI, Naomi SUGIMOTO, Yuuji SAWAI, Kazuchika SAEKI
  • Patent number: 9417565
    Abstract: A conveyor system includes a first conveyor belt entrained about a separation roller and a support roller disposed upstream from the separation roller, a second conveyor belt entrained about a first roller disposed at an uppermost stream in a transport direction of a sheet-type medium and a second roller disposed downstream therefrom, a belt alignment device to tilt a rotary shaft of the separation roller to restrict a range of belt mistracking of the first conveyor belt in a width direction thereof within a predetermined range, and a restriction member to restrict an amount of inclination of the rotary shaft such that a hypothetical extended plane, which is a hypothetical extension of the outer circumferential surface of the first conveyor belt between the separation roller and the support roller to a downstream side in the transport direction, does not contact a rotational center axis of the first roller.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: August 16, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Hozumi, Naoki Iwaya, Yasufumi Takahashi, Masaharu Furuya, Naomi Sugimoto, Kazuchika Saeki
  • Patent number: 9376257
    Abstract: A belt tracking system for controlling the lateral position of a movable belt entrained about a plurality of generally parallel rollers for moving in a trans-axial direction perpendicular to an axial direction in which the rollers extend parallel to each other includes a roller shaft, a slidable member, and a rotation restrictor. The roller shaft extends outward in the axial direction from an axial end of a specific one of the plurality of generally parallel rollers. The slidable member is slidably disposed around the roller shaft to move along the roller shaft as the belt moves laterally outward in the axial direction. The rotation restrictor is disposed adjacent to the slidable member to restrict rotation of the slidable member around the roller shaft.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: June 28, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Hozumi, Naomi Sugimoto, Yuuji Sawai, Kazuchika Saeki
  • Publication number: 20160161889
    Abstract: An image forming apparatus includes a transfer member configured to abut against an image carrier for carrying a toner image to form a transfer nip; and a power supply configured to output a bias voltage for transferring the toner image on the image carrier onto a recording medium nipped in the transfer nip. The bias voltage includes a first voltage for transferring the toner image from the image carrier onto the recording medium in a transfer direction and a second voltage having an opposite polarity of the first voltage, the first and the second voltages being alternately output. A time-averaged value of the bias voltage is set to a polarity in the transfer direction and is set in the transfer direction side with respect to a median between a maximum and a minimum of the bias voltage.
    Type: Application
    Filed: February 17, 2016
    Publication date: June 9, 2016
    Inventors: Shinya TANAKA, Naomi SUGIMOTO, Haruo llMURA, Shinji AOKI, Yasuhiko OGINO, Kazuchika SAEKI, Keigo NAKAMURA
  • Publication number: 20160139553
    Abstract: A recording medium conveying device includes an endless belt to convey a recording medium, a plurality of support rollers around which the belt is wound, to rotate the belt, and a cleaner in contact with the belt to clean the belt. One of the plurality of support rollers is a separation support roller, mounted on a tiltable rotary shaft, to separate the recording medium from the belt using a curvature of the separation support roller. The separation support roller includes a contact member to contact an edge of the belt when the belt laterally moves toward one side of the belt.
    Type: Application
    Filed: October 28, 2015
    Publication date: May 19, 2016
    Inventors: Yoshiki HOZUMI, Naomi SUGIMOTO, Kazuchika SAEKI
  • Patent number: 9335674
    Abstract: According to an embodiment, provided is a transfer device including: a nip forming member that abuts against a surface of an image carrier carrying a toner image; and a transfer voltage application unit that applies a transfer voltage including a DC component and an AC component. The transfer voltage is an alternating voltage in which a supply voltage having polarity in a transfer direction and a return voltage having polarity opposite. A time average value Vave of the transfer voltage is set to be at polarity in the transfer direction and is set to be closer to a peak value Vt of the supply voltage relative to a center value Voff between a maximum and minimum value. An absolute value of the peak value Vr of the return voltage is set to be larger than an absolute value of the time average value Vave.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: May 10, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Naomi Sugimoto, Shinya Tanaka, Haruo Iimura, Shinji Aoki, Yasuhiko Ogino, Keigo Nakamura
  • Patent number: RE47726
    Abstract: An image forming apparatus includes a nip forming member and a transfer bias output device that outputs a transfer bias to form a transfer electric field in a transfer nip between the nip forming member and an intermediate transfer member. Upon transfer of a composite toner image including a particular toner image onto a recording medium in the transfer nip, the transfer bias output device outputs the transfer bias including a first superimposed bias in which a direct current (DC) component is superimposed on an alternating current (AC) component. Upon transfer of the composite toner image without the particular toner image onto the recording medium in the transfer nip, the transfer bias output device outputs one of the transfer bias including a second superimposed bias having a peak-to-peak value of the AC component smaller than that of the first superimposed bias and the transfer bias including only the DC component.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: November 12, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shinji Aoki, Haruo Iimura, Yasuhiko Ogino, Tadashi Kasai, Naomi Sugimoto, Shinya Tanaka, Keigo Nakamura