Patents by Inventor Naohiro Toda

Naohiro Toda 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: 20210370690
    Abstract: A drying device includes a drum, a contact conveyance roller, and a cooling device. The drum heats a continuous medium while conveying the continuous medium. The continuous medium is wound around a circumferential surface of the drum. The contact conveyance roller contacts the drum at a downstream end of a portion of the continuous medium wound around the circumferential surface of the drum in a conveyance direction of the continuous medium. Further, the contact conveyance roller conveys the continuous medium separated from the drum. The continuous medium is wound around the contact conveyance roller. The cooling device cools the contact conveyance roller.
    Type: Application
    Filed: May 18, 2021
    Publication date: December 2, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Toshiya SATOH, Naohiro TODA, Teiichiro ISHIKAWA, Kohei FUNADA
  • Publication number: 20210291531
    Abstract: A liquid discharge apparatus includes a liquid discharge head including a nozzle face including a nozzle configured to discharge a liquid, a head cap configured to cover the nozzle face of the liquid discharge head, a buffer tank disposed downstream from the head cap in a direction of collection of the liquid from the liquid discharge head and configured to temporarily store the liquid, a communication passage coupling the head cap and the buffer tank, and a heater configured to heat the liquid stored in the buffer tank. The quid discharge apparatus further includes a heat source configured to generate heat and a heat introduction passage coupling the heat source with the buffer tank, to introduce exhaust heat from the heat source into the buffer tank.
    Type: Application
    Filed: February 18, 2021
    Publication date: September 23, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Hidehisa Shibasaki, Naohiro Toda, Masaya Hamaguchi
  • Patent number: 10919294
    Abstract: A liquid discharging device includes a carriage carrying a head configured to discharge a liquid onto a target, the liquid including an ink, the ink consisting water, an organic solvent, a coloring material, and a plurality of polysiloxane compounds, a driving unit configured to move the carriage and the target relatively to each other, a measuring unit configured to measure the distance between the carriage and the target, an image-capturing unit configured to capture a target image, and a setting unit configured to set a liquid discharging performance of the head based on a measurement result obtained by the measuring unit and the target image obtained by the image-capturing unit.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: February 16, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Takuya Fujita, Hiromi Sakaguchi, Yuta Nakamura, Naoto Shimura, Yoshiaki Masuda, Tetsuto Ueda, Yoshimi Nemoto, Kenichi Taguma, Naohiro Toda, Shinya Seno, Nobuyuki Satoh
  • Publication number: 20200276839
    Abstract: An apparatus according to one aspect of the present disclosure includes a temperature controlling member configured to heat or cool a conveyed substrate to which a liquid is applied, the conveyed substrate contacting an outer peripheral surface of the temperature controlling member; and an upstream inlet air unit configured to draw air between the substrate and the temperature controlling member, the upstream inlet air unit being provided upstream of a contact location of the substrate with the temperature controlling member, in a conveying direction.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 3, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Toshiya SATOH, Teiichiro ISHIKAWA, Masaya HAMAGUCHI, Yusuke KOMINE, Huizee THEN, Naohiro TODA, Hidehisa SHIBASAKI
  • Patent number: 10723158
    Abstract: A line head type liquid discharge apparatus includes a treatment liquid applying device, a first discharging device, a heating device, and a second discharging device. The treatment liquid applying device applies a treatment liquid to a non-permeable base material. The first discharging device discharges a first ink containing an organic solvent onto the non-permeable base material to which the treatment liquid has been applied. The heating device heats, with an infrared ray, the non-permeable base material onto which the first ink has been discharged. The second discharging device discharges a second ink containing an organic solvent onto the non-permeable base material heated by the heating device. A content ratio of the organic solvent contained in the first ink is higher than a content ratio of the organic solvent contained in the second ink.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: July 28, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Naohiro Toda, Takuma Nakamura, Yukie Inoue, Masaya Hamaguchi, Hiroyuki Yamashita
  • Publication number: 20200115579
    Abstract: An ink containing water, an organic solvent, at least two kinds of resin particles, and at least one compound selected from application formulae (1) and (2). Ink-jetting recording method, and record thereof. Described inks have high adhesiveness for various substrates, and have one or more of high rub fastness, solvent resistance, and non-transfer properties, and further have high image hardness and high glossiness.
    Type: Application
    Filed: December 10, 2019
    Publication date: April 16, 2020
    Inventors: Masahiro KIDO, Naohiro TODA, Juichi FURUKAWA, Hidefumi NAGASHIMA, Tomohiro NAKAGAWA, Noriaki OKADA, Hikaru KOBAYASHI
  • Patent number: 10576757
    Abstract: A dryer includes a conveyor to convey a film including a first surface onto which a liquid is applied, a noncontact heater to heat the first surface of the film conveyed by the conveyor without contacting the first surface, a contact heater to contact and heat a second surface of the film opposite the first surface, and circuitry to set a first heating temperature of the contact heater less than 85° C. and set a second heating temperature of the noncontact heater to be 30° C. to 90° C. higher than the first heating temperature.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: March 3, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Takuma Nakamura, Naohiro Toda, Hiroyuki Yamashita, Masaya Hamaguchi, Yukie Inoue
  • Patent number: 10441742
    Abstract: A light emission control device includes a light emission controller which controls a light emitter and performs normal control and wake-up control, the normal control being control for causing the light emitter to emit light having a color temperature and luminance according to an instruction of a user, the wake-up control being control for causing the light emitter to emit light at increasing luminance over time to wake up the user who is sleeping. The maximum luminance of light emitted by the light emitter in the wake-up control is greater than the maximum luminance of light emitted by the light emitter in the normal control.
    Type: Grant
    Filed: February 24, 2018
    Date of Patent: October 15, 2019
    Assignees: Panasonic Corporation, Nintendo Co., Ltd.
    Inventors: Hiroshi Kido, Shigeru Ido, Hisao Kataoka, Naohiro Toda, Kazuhiro Hatta, Sadayoshi Hattori
  • Publication number: 20190299692
    Abstract: A line head type liquid discharge apparatus includes a treatment liquid applying device, a first discharging device, a heating device, and a second discharging device. The treatment liquid applying device applies a treatment liquid to a non-permeable base material. The first discharging device discharges a first ink containing an organic solvent onto the non-permeable base material to which the treatment liquid has been applied. The heating device heats, with an infrared ray, the non-permeable base material onto which the first ink has been discharged. The second discharging device discharges a second ink containing an organic solvent onto the non-permeable base material heated by the heating device. A content ratio of the organic solvent contained in the first ink is higher than a content ratio of the organic solvent contained in the second ink.
    Type: Application
    Filed: March 25, 2019
    Publication date: October 3, 2019
    Inventors: Naohiro TODA, Takuma Nakamura, Yukie Inoue, Masaya Hamaguchi, Hiroyuki Yamashita
  • Publication number: 20190283459
    Abstract: A dryer includes a conveyor to convey a film including a first surface onto which a liquid is applied, a noncontact heater to heat the first surface of the film conveyed by the conveyor without contacting the first surface, a contact heater to contact and heat a second surface of the film opposite the first surface, and circuitry to set a first heating temperature of the contact heater less than 85° C. and set a second heating temperature of the noncontact heater to be 30° C. to 90° C. higher than the first heating temperature.
    Type: Application
    Filed: March 11, 2019
    Publication date: September 19, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Takuma Nakamura, Naohiro Toda, Hiroyuki Yamashita, Masaya Hamaguchi, Yukie Inoue
  • Publication number: 20190283406
    Abstract: A liquid discharging device includes a carriage carrying a head configured to discharge a liquid onto a target, the liquid comprising an ink, the ink comprising water, an organic solvent, a coloring material, and a plurality of polysiloxane compounds, a driving unit configured to move the carriage and the target relatively to each other, a measuring unit configured to measure the distance between the carriage and the target, an image-capturing unit configured to capture a target image, and a setting unit configured to set a liquid discharging performance of the head based on a measurement result obtained by the measuring unit and the target image obtained by the image-capturing unit.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 19, 2019
    Inventors: Takuya FUJITA, Hiromi Sakaguchi, Yuta Nakamura, Naoto Shimura, Yoshiaki Masuda, Tetsuto Ueda, Yoshimi Nemoto, Kenichi Taguma, Naohiro Toda, Shinya Seno, Nobuyuki Satoh
  • Patent number: 10237937
    Abstract: A lighting device is provided that includes a lighting controller that controls a light emitter that emits illumination light. The lighting controller includes a first filter that converts a first signal waveform that is defined by a first piecewise linear curve and whose intensity repeatedly increases and decreases into a signal waveform having a smooth rounded curve, and outputs the converted signal waveform as a first output waveform. The lighting controller causes the light emitter to repeatedly increase and decrease the intensity of the illumination light in accordance with the first output waveform.
    Type: Grant
    Filed: February 17, 2018
    Date of Patent: March 19, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroshi Kido, Shigeru Ido, Hisao Kataoka, Naohiro Toda
  • Publication number: 20180255617
    Abstract: A lighting device is provided that includes a lighting controller that controls a light emitter that emits illumination light. The lighting controller includes a first filter that converts a first signal waveform that is defined by a first piecewise linear curve and whose intensity repeatedly increases and decreases into a signal waveform having a smooth rounded curve, and outputs the converted signal waveform as a first output waveform. The lighting controller causes the light emitter to repeatedly increase and decrease the intensity of the illumination light in accordance with the first output waveform.
    Type: Application
    Filed: February 17, 2018
    Publication date: September 6, 2018
    Inventors: Hiroshi KIDO, Shigeru IDO, Hisao KATAOKA, Naohiro TODA
  • Publication number: 20180250492
    Abstract: A light emission control device includes a light emission controller which controls a light emitter and performs normal control and wake-up control, the normal control being control for causing the light emitter to emit light having a color temperature and luminance according to an instruction of a user, the wake-up control being control for causing the light emitter to emit light at increasing luminance over time to wake up the user who is sleeping. The maximum luminance of light emitted by the light emitter in the wake-up control is greater than the maximum luminance of light emitted by the light emitter in the normal control.
    Type: Application
    Filed: February 24, 2018
    Publication date: September 6, 2018
    Inventors: Hiroshi Kido, Shigeru Ido, Hisao Kataoka, Naohiro Toda, Kazuhiro Hatta, Sadayoshi Hattori
  • Patent number: 10065413
    Abstract: A liquid discharging device detects, among a plurality of nozzles of a liquid discharging head, a normal-discharging nozzle and a false-discharging nozzle, selects whether to recover discharging performance of the false-discharging nozzle by a cleaner or to compensate deterioration in an image caused by the false-discharging nozzle by a compensator using the normal-discharging nozzle according to the detected number of consecutive false-discharging nozzles, and performs operation according to the selection.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: September 4, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryoh Yokoyama, Yoshimi Nemoto, Kenichi Taguma, Tetsuto Ueda, Naohiro Toda, Yasunobu Takagi, Shotaro Ueda
  • Patent number: 10012959
    Abstract: A lighting device includes: an illuminator which emits illumination light; a clock which measures time; a receiver which receives input of a set time from a user; a sensor which detects whether an eye of the user is open; and a controller which controls, at or after the set time, the illuminator, based on a result of the detection by the sensor.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: July 3, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naohiro Toda, Kazuhiro Hatta
  • Patent number: 9982151
    Abstract: An aqueous ink for inkjet includes water, at least one hydrosoluble organic solvent each having a boiling point of 250° C. or lower; vinyl polymer particles containing a pigment, and polycarbonate-based urethane resin particles, wherein the aqueous ink for inkjet is used for an inkjet recording system including a heating step.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: May 29, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hidefumi Nagashima, Naohiro Toda, Tomohiro Nakagawa, Juichi Furukawa, Ichiroh Fujii
  • Patent number: 9868288
    Abstract: A cleaning liquid for an inkjet recording apparatus is provided. The cleaning liquid includes an organic solvent having a boiling point of less than 250° C. and no organic solvent having a boiling point of 250° C. or more. The organic solvent having a boiling point of less than 250° C. includes two or more methoxy-group-containing organic solvents and at least one of 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, and 2,3-butanediol.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: January 16, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hidefumi Nagashima, Naohiro Toda, Juichi Furukawa, Masahiro Kido, Takashi Tamai, Ichiroh Fujii, Hisashi Habashi
  • Patent number: 9855763
    Abstract: An ink for inkjet includes water; two or more hydrosoluble organic solvents; a pigment; and a resin particle more than the pigment by weight. A hydrosoluble organic solvent A having the smallest SP value and a hydrosoluble organic solvent B having the largest SP among the two or more hydrosoluble organic solvents satisfy the following relations (1) and (2): SP value of hydrosoluble organic solvent B?SP value of hydrosoluble organic solvent A?3??(1) boiling point of hydrosoluble organic solvent B>boiling point of hydrosoluble organic solvent A??(2).
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: January 2, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Naohiro Toda, Tomohiro Nakagawa, Hidefumi Nagashima, Juichi Furukawa, Masahiro Kido, Hikaru Kobayashi
  • Patent number: 9856386
    Abstract: An inkjet ink set is provided. The inkjet ink set includes a first ink including a resin A and an organic solvent A; and a second ink including a resin B and an organic solvent which is the same as or different from the organic solvent A. The minimum film forming temperature (MFT) of the resin A is lower than that of the resin B.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: January 2, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahiro Kido, Naohiro Toda, Tomohiro Nakagawa, Juichi Furukawa, Hidefumi Nagashima, Hikaru Kobayashi