Patents by Inventor Toshihiro Yoshinuma
Toshihiro Yoshinuma 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).
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Patent number: 10369813Abstract: A conveyor for printer includes, a first guide, a second guide disposed separately from the first guide, a third guide disposed between the first guide and the second guide, the first guide, the second guide, and the third guide defining a conveyance path along which a medium is conveyed, and a loading guide movable to guide the medium between the first guide and the second guide. The third guide is movable between a first position and a second position. The third guide presses the medium to the first guide and the second guide at the first position and is separated from the medium at the second position. The loading guide is disposed at a guiding position to guide the medium and is disposed at a retracted position retracted from the guiding position in response to the third guide disposed at the first position.Type: GrantFiled: January 19, 2018Date of Patent: August 6, 2019Assignee: Ricoh Company, Ltd.Inventors: Satoru Nagasawa, Ken Onodera, Toshihiro Yoshinuma
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Patent number: 10300712Abstract: A drying device includes a heater, a supporter, a controller, and a temperature detector. The heater heats a medium. The supporter is disposed opposite the heater to support the medium. The controller turns on the heater while the medium is conveyed, and turns off the heater when the medium is stopped. The temperature detector detects a temperature of the supporter. The controller is connected to the temperature detector to turn off the heater when the temperature detected with the temperature detector is a predetermined temperature or higher.Type: GrantFiled: July 5, 2017Date of Patent: May 28, 2019Assignee: Ricoh Company, Ltd.Inventors: Wataru Sakamoto, Ken Onodera, Toshihiro Yoshinuma
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Patent number: 10260805Abstract: A heating apparatus includes a plurality of heaters to heat a heating object, a plurality of air nozzles to blow air onto the heating object, and a blower to supply air to the plurality of air nozzles. The plurality of heaters is disposed along a conveyance direction of the heating object, at least one of the plurality of air nozzles is disposed between adjacent two of the plurality of heaters, and the plurality of air nozzles blows air onto the heating object while the plurality of heaters heats the heating object in both cases of when the heater performs a heating operation and when the heater does not perform the heating operation.Type: GrantFiled: March 14, 2018Date of Patent: April 16, 2019Assignee: Ricoh Company, Ltd.Inventor: Toshihiro Yoshinuma
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Publication number: 20190100031Abstract: A drying device includes a plurality of blowers to blow air onto an object to be dried, the plurality of blowers being disposed along a direction of conveyance of the object to be dried, and a plurality of heaters to heat air inside the plurality of blowers. Each of the plurality of blowers includes an elongated nozzle arranged along a nozzle direction perpendicular to the direction of conveyance of the object to be dried, and an airflow generator to generate airflow to be blown from the elongated nozzle. The plurality of blowers includes a first blower including the airflow generator at a first end of the first blower in the nozzle direction and a second blower including the airflow generator at a second end of the second blower opposite the first end in the nozzle direction.Type: ApplicationFiled: July 19, 2018Publication date: April 4, 2019Inventors: Hideaki NISHIMURA, Toshihiro YOSHINUMA, Wataru SAKAMOTO, Sho SAWAHATA, Ken ONODERA
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Publication number: 20190084320Abstract: A drying device includes heaters disposed along the direction of conveyance of a recording medium to which liquid is applied, the heaters being configured to heat the recording medium, wherein the recording medium is conveyed in contact with the heaters on a conveyance path including a first path on which the recording medium is conveyed in contact with the heaters for the second time and a second path on which the recording medium is conveyed in contact with the heaters for the second time, wherein a dried film of the liquid formed by the following method has a Martens hardness of 30 N/mm2 or greater at 120 degrees C.: method: the liquid is applied to a glass plate to form a film and the film is dried with a reduced pressure at 100 degrees C. for three hours to obtain the dried film having an average thickness of 5 ?m.Type: ApplicationFiled: September 13, 2018Publication date: March 21, 2019Inventors: Ryota Iwasaki, Hiromi Sakaguchi, Yoshiki Yanagawa, Kaori Toyama, Satoshi Takahashi, Toshihiro Yoshinuma, Ken Onodera, Sho Sawahata, Junji Nakai, Yasuhisa Katoh
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Patent number: 10183503Abstract: A drying device includes a first heater, a second heater, a conveyance path, and an infrared heater. The first heater contacts and heats a medium on which liquid is applied. The second heater contacts and heats the medium. The second heater contacts the medium at a distance longer than a distance at which the first heater contacts the medium. The conveyance path of the medium includes a first conveyance-path portion and a second conveyance-path portion. The medium is conveyed while contacting the first heater in the first conveyance-path portion. The first conveyance-path portion is disposed upstream from the second heater in a direction of conveyance of the medium. The second conveyance-path portion is disposed downstream from the second heater in the direction of conveyance of the medium. The infrared heater is disposed in the second conveyance-path portion, to irradiate an infrared ray to the medium.Type: GrantFiled: May 18, 2017Date of Patent: January 22, 2019Assignee: Ricoh Company, Ltd.Inventors: Toshihiro Yoshinuma, Yasuhisa Katoh, Junji Nakai, Hirokazu Ikenoue, Sho Sawahata, Ken Onodera
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Patent number: 10150306Abstract: A drying device includes a roller, and the drying device is for drying a recording medium conveyed by rotation of the roller. The drying device includes a first heating source and second heating source included inside the roller; first and second temperature detectors for respectively detecting a temperature of a first region on a surface of the roller and a temperature of a second region on the surface of the roller; and a heating controller that controls heating and termination of the heating by the first heating source and/or the second heating source, wherein, upon detecting that a temperature of one region of the first region and the second region is higher than or equal to a predetermined temperature, the heating controller terminates heating by one heating source corresponding to the other region.Type: GrantFiled: July 18, 2017Date of Patent: December 11, 2018Assignee: Ricoh Company, Ltd.Inventors: Wataru Sakamoto, Toshihiro Yoshinuma
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Patent number: 10118411Abstract: A drying device includes a plurality of heaters and a conveyance path. The plurality of heaters is disposed side by side in a direction of conveyance of a medium to contact and heat the medium to which liquid is applied. The medium is conveyed on the conveyance path while contacting the plurality of heaters. The conveyance path includes a first path and a second path. On the first path, the medium is conveyed while contacting the plurality of heaters. On the second path, the medium is conveyed while contacting again at least one of the plurality of heaters having contacted on the first path.Type: GrantFiled: March 17, 2017Date of Patent: November 6, 2018Assignee: Ricoh Company, Ltd.Inventors: Toshihiro Yoshinuma, Ken Onodera, Sho Sawahata, Junji Nakai
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Publication number: 20180264848Abstract: A conveyor for printer includes, a first guide, a second guide disposed separately from the first guide, a third guide disposed between the first guide and the second guide, the first guide, the second guide, and the third guide defining a conveyance path along which a medium is conveyed, and a loading guide movable to guide the medium between the first guide and the second guide. The third guide is movable between a first position and a second position. The third guide presses the medium to the first guide and the second guide at the first position and is separated from the medium at the second position. The loading guide is disposed at a guiding position to guide the medium and is disposed at a retracted position retracted from the guiding position in response to the third guide disposed at the first position.Type: ApplicationFiled: January 19, 2018Publication date: September 20, 2018Applicant: Ricoh Company, Ltd.Inventors: Satoru Nagasawa, Ken Onodera, Toshihiro Yoshinuma
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Publication number: 20180264849Abstract: A dryer for conveying and drying an object to be dried, the dryer includes a conveyor including a first path and a second path along which the object to be dried is conveyed, a conveyance direction of the second path being different from a conveyance direction of the first path, and a blower to blow air onto the object to be dried. The blower includes a first air outlet that faces the first path and blows the air onto the object to be dried conveyed along the first path, and a second air outlet that faces the second path and blows the air onto the object to be dried conveyed along the second path.Type: ApplicationFiled: March 6, 2018Publication date: September 20, 2018Applicant: Ricoh Company, Ltd.Inventors: Satoshi Kitaoka, Toshihiro Yoshinuma, Ken Onodera
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Publication number: 20180266763Abstract: A heating apparatus includes a plurality of heaters to heat a heating object, a plurality of air nozzles to blow air onto the heating object, and a blower to supply air to the plurality of air nozzles. The plurality of heaters is disposed along a conveyance direction of the heating object, at least one of the plurality of air nozzles is disposed between adjacent two of the plurality of heaters, and the plurality of air nozzles blows air onto the heating object while the plurality of heaters heats the heating object in both cases of when the heater performs a heating operation and when the heater does not perform the heating operation.Type: ApplicationFiled: March 14, 2018Publication date: September 20, 2018Applicant: Ricoh Company, Ltd.Inventor: Toshihiro Yoshinuma
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Publication number: 20180264803Abstract: A dryer for drying a drying object includes a hot air generator to generate hot air to be blown onto the drying object, a contact heater to contact and heat the drying object, and a controller to control a heating temperature of the contact heater and a temperature of the hot air. The controller controls the heating temperature of the contact heater to be above a first predetermined temperature from a start of generation of the hot air by the hot air generator until the temperature of the hot air reaches a second predetermined temperature.Type: ApplicationFiled: March 6, 2018Publication date: September 20, 2018Applicant: Ricoh Company, Ltd.Inventors: Yoshiaki Hoshino, Ken Onodera, Toshihiro Yoshinuma
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Patent number: 9950545Abstract: A drying device for drying a recording medium is provided. The drying device includes a plurality of heating roller units independently detachable from the drying device. The heating roller units includes at least one upstream heating roller unit disposed upstream relative to a conveyance direction of the recording medium and at least two downstream heating roller units disposed downstream relative to the conveyance direction of the recording medium. Each upstream heating roller unit includes an upstream heating roller, two upstream temperature detectors, and two upstream controllers. The upstream heating roller includes two upstream heat sources having different heating areas. The two upstream temperature detectors are disposed at respective end parts of the upstream heating roller, to detect temperatures of the respective upstream heat sources to output signals.Type: GrantFiled: September 30, 2016Date of Patent: April 24, 2018Assignee: RICOH COMPANY, LTD.Inventor: Toshihiro Yoshinuma
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Publication number: 20180022114Abstract: A drying device includes a roller, and the drying device is for drying a recording medium conveyed by rotation of the roller. The drying device includes a first heating source and second heating source included inside the roller; first and second temperature detectors for respectively detecting a temperature of a first region on a surface of the roller and a temperature of a second region on the surface of the roller; and a heating controller that controls heating and termination of the heating by the first heating source and/or the second heating source, wherein, upon detecting that a temperature of one region of the first region and the second region is higher than or equal to a predetermined temperature, the heating controller terminates heating by one heating source corresponding to the other region.Type: ApplicationFiled: July 18, 2017Publication date: January 25, 2018Applicant: Ricoh Company, Ltd.Inventors: Wataru SAKAMOTO, Toshihiro YOSHINUMA
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Publication number: 20180009237Abstract: A drying device includes a heater, a supporter, a controller, and a temperature detector. The heater heats a medium. The supporter is disposed opposite the heater to support the medium. The controller turns on the heater while the medium is conveyed, and turns off the heater when the medium is stopped. The temperature detector detects a temperature of the supporter. The controller is connected to the temperature detector to turn off the heater when the temperature detected with the temperature detector is a predetermined temperature or higher.Type: ApplicationFiled: July 5, 2017Publication date: January 11, 2018Inventors: Wataru SAKAMOTO, Ken ONODERA, Toshihiro YOSHINUMA
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Publication number: 20170334217Abstract: A drying device includes a first heater, a second heater, a conveyance path, and an infrared heater. The first heater contacts and heats a medium on which liquid is applied. The second heater contacts and heats the medium. The second heater contacts the medium at a distance longer than a distance at which the first heater contacts the medium. The conveyance path of the medium includes a first conveyance-path portion and a second conveyance-path portion. The medium is conveyed while contacting the first heater in the first conveyance-path portion. The first conveyance-path portion is disposed upstream from the second heater in a direction of conveyance of the medium. The second conveyance-path portion is disposed downstream from the second heater in the direction of conveyance of the medium. The infrared heater is disposed in the second conveyance-path portion, to irradiate an infrared ray to the medium.Type: ApplicationFiled: May 18, 2017Publication date: November 23, 2017Inventors: Toshihiro YOSHINUMA, Yasuhisa KATOH, Junji NAKAI, Hirokazu IKENOUE, Sho SAWAHATA, Ken ONODERA
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Publication number: 20170266990Abstract: A drying device includes a plurality of heaters and a conveyance path. The plurality of heaters is disposed side by side in a direction of conveyance of a medium to contact and heat the medium to which liquid is applied. The medium is conveyed on the conveyance path while contacting the plurality of heaters. The conveyance path includes a first path and a second path. On the first path, the medium is conveyed while contacting the plurality of heaters. On the second path, the medium is conveyed while contacting again at least one of the plurality of heaters having contacted on the first path.Type: ApplicationFiled: March 17, 2017Publication date: September 21, 2017Inventors: Toshihiro YOSHINUMA, Ken ONODERA, Sho SAWAHATA, Junji NAKAI
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Publication number: 20170266991Abstract: A drying device includes a contact heater unit to contact and heat a medium. The contact heater unit includes a plurality of heating members each having a curved contact face to contact the medium among plural heating members of the plurality of heating members to contact a first surface of the medium opposite a second surface of the medium on which liquid is applied. The plurality of heating members includes a first heating member and a plurality of second heating members. The first heating member has a maximum contact distance to contact the medium. The plurality of second heating members is disposed upstream from the first heating member in a direction of conveyance of the medium. Two heating members of the plurality of second heating members immediately upstream from the first heating member in the direction of conveyance of the medium contact the first surface of the medium.Type: ApplicationFiled: March 17, 2017Publication date: September 21, 2017Inventors: Ken ONODERA, Sho SAWAHATA, Junji NAKAI, Toshihiro YOSHINUMA, Yasuhisa KATOH, Hirokazu IKENOUE, Satoshi KITAOKA, Hideaki NISHIMURA
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Publication number: 20170120625Abstract: A drying device for drying a recording medium is provided. The drying device includes a plurality of heating roller units independently detachable from the drying device. The heating roller units includes at least one upstream heating roller unit disposed upstream relative to a conveyance direction of the recording medium and at least two downstream heating roller units disposed downstream relative to the conveyance direction of the recording medium. Each upstream heating roller unit includes an upstream heating roller, two upstream temperature detectors, and two upstream controllers. The upstream heating roller includes two upstream heat sources having different heating areas. The two upstream temperature detectors are disposed at respective end parts of the upstream heating roller, to detect temperatures of the respective upstream heat sources to output signals.Type: ApplicationFiled: September 30, 2016Publication date: May 4, 2017Applicant: RICOH COMPANY, LTD.Inventor: Toshihiro YOSHINUMA
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Publication number: 20160273832Abstract: A drying device including multiple heating rollers to dry a recording medium wound around the heating rollers while conveying the recording medium is provided. The heating rollers include upstream heating rollers and downstream heating rollers, disposed on an upstream side and a downstream side, respectively, relative to a direction of conveyance of the recording medium. Each of the upstream heating rollers includes an upstream heat source. Each of the downstream heating rollers includes a downstream heat source. The upstream heat source and the downstream heat source have different configurations. The upstream heat source has a maximum amount of current greater than that of the downstream heat source.Type: ApplicationFiled: February 10, 2016Publication date: September 22, 2016Applicant: RICOH COMPANY, LTD.Inventors: Kohki Asada, Kazuhiro WAKAMATSU, Genichiro KAWAMICHI, Ken ONODERA, Toshihiro YOSHINUMA