Patents by Inventor Shuji Yokoyama
Shuji Yokoyama 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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Publication number: 20230364925Abstract: A label printer for printing on a label sheet that is stored in a rolled shape and includes a base sheet and a plurality of labels attached thereon, includes a platen roller configured to convey the label sheet, a head configured to print on a label of the conveyed label sheet, a peeling bar by which the printed label is peeled off from the base sheet, a winding shaft configured to rotate to wind thereon the base sheet from which the printed label has been peeled off, and a support member configured to pivot around an axis at a first end thereof and biased to press with a second end thereof the base sheet wound around the winding shaft.Type: ApplicationFiled: January 17, 2023Publication date: November 16, 2023Inventor: Shuji YOKOYAMA
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Patent number: 11681249Abstract: According to one embodiment, a heating device includes a belt and a contact member. The belt has a tubular shape. The contact member is provided inside the belt. The contact member is formed in an arc shape along the inner peripheral surface of the belt. The contact member is slidably in contact with the inner peripheral surface of the belt. When the amount of deflection of the belt is D, the radius of curvature of the inner peripheral surface of the belt is A, and the radius of curvature of the outer peripheral surface of the contact member is B, the following equations (1) and (2) are satisfied: D?10 mm??(1) 0.4 mm?A?B?0 mm??(2).Type: GrantFiled: March 8, 2022Date of Patent: June 20, 2023Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji Yokoyama
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Publication number: 20230168616Abstract: According to one embodiment, a heating device includes a cylindrical belt, a heat generating member, and a support member. The heat generating member is disposed in an interior region surrounded by the belt and in contact with an inner peripheral surface of the belt. The support member is provided in the interior region surrounded by the belt and contacts and supports the heat generating member.Type: ApplicationFiled: January 12, 2023Publication date: June 1, 2023Inventor: Shuji YOKOYAMA
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Patent number: 11579549Abstract: According to one embodiment, a heating device includes a cylindrical belt, a heat generating member, and a support member. The heat generating member is disposed in an interior region surrounded by the belt and in contact with an inner peripheral surface of the belt. The support member is provided in the interior region surrounded by the belt and contacts and supports the heat generating member.Type: GrantFiled: May 13, 2021Date of Patent: February 14, 2023Assignee: Toshiba Tec Kabushiki KaishaInventor: Shuji Yokoyama
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Patent number: 11420928Abstract: To provide a photopolymerization sensitizer which will not cause problems of dusting or coloring of a cured product by bleeding of additives such as the photopolymerization sensitizer on the surface e.g. by blooming at the time of photo-curing or during storage of the cured product, and which imparts a practically sufficient photo-curing rate. An oligomer of a 9,10-bis(substituted oxy)anthracene compound having repeating units represented by the following formula (1): wherein n represents a repetition number and is from 2 to 50, each of X and Y which may be the same or different, is a hydrogen atom, a C1-8 alkyl group or a halogen atom, and A is a bivalent substituent.Type: GrantFiled: May 15, 2018Date of Patent: August 23, 2022Assignee: Kawasaki Kasei Chemicals Ltd.Inventors: Akihiko Yamada, Shuji Yokoyama, Shigeaki Numata, Tatsuki Takeuchi
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Publication number: 20220197202Abstract: According to one embodiment, a heating device includes a belt and a contact member. The belt has a tubular shape. The contact member is provided inside the belt. The contact member is formed in an arc shape along the inner peripheral surface of the belt. The contact member is slidably in contact with the inner peripheral surface of the belt. When the amount of deflection of the belt is D, the radius of curvature of the inner peripheral surface of the belt is A, and the radius of curvature of the outer peripheral surface of the contact member is B, the following equations (1) and (2) are satisfied: D?10 mm??(1) 0.4 mm?A?B?0 mm??(2).Type: ApplicationFiled: March 8, 2022Publication date: June 23, 2022Inventor: Shuji Yokoyama
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Patent number: 11347167Abstract: According to one embodiment, a fixing device fixes a toner image formed on a medium to the medium. The fixing device includes a heating rotator which is rotatably supported, an auxiliary heating member which is disposed along an inner circumferential surface of the heating rotator, and swings as the heating rotator rotates, a lubricant supply member which is disposed at a position on which the swing auxiliary heating member abuts, and is impregnated with a lubricant, and a pressing rotator which abuts on the heating rotator, and forms a nip portion through which the medium passes.Type: GrantFiled: January 6, 2021Date of Patent: May 31, 2022Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji Yokoyama
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Patent number: 11340542Abstract: A fixing device that fixes a toner image to a medium, includes: a heating body rotatably supported; an auxiliary heating member disposed along an inner surface of the heating rotation body; a temperature sensor facing the inner surface via the auxiliary heating member; a first elastic body configured to press, via a first force, the temperature sensor against the inner surface; and a second elastic body configured to press, via a second force, a sliding member against the inner surface. A product of a distance from a center of the auxiliary heating member to the first elastic body and the first elastic force is equal to a product of a distance from the center to the second elastic body and the second elastic force.Type: GrantFiled: September 30, 2020Date of Patent: May 24, 2022Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji Yokoyama
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Patent number: 11334011Abstract: A heating device for an image forming unit includes a heater unit, a cylindrical film, a support member, a first heat transfer unit, and a second heat transfer unit. The cylindrical film is at least partially disposed around the heater unit. The support member is configured to support the heater unit above the cylindrical film and such that the heater unit is located between the support member and the cylindrical film. The first heat transfer unit is disposed between the cylindrical film and the heater unit and in confronting relation with a first surface of the heater unit. The first heat transfer unit has a first contact area with the heater unit. The second heat transfer unit is disposed between the heater unit and the support member and in confronting relation with a second surface of the heater unit. The second surface is opposite the first surface.Type: GrantFiled: February 2, 2021Date of Patent: May 17, 2022Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji Yokoyama
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Patent number: 11300909Abstract: According to one embodiment, a heating device includes a belt and a heat generating member. The belt has a tubular shape. The heat generating member is provided inside the belt. The heat generating member is formed in an arc shape along the inner peripheral surface of the belt. The heat generating member is slidably in contact with the inner peripheral surface of the belt. When the amount of deflection of the belt is D, the radius of curvature of the inner peripheral surface of the belt is A, and the radius of curvature of the outer peripheral surface of the heat generating member is B, the following equations (1) and (2) are satisfied: D?10 mm??(1) 0.4 mm?A?B?0 mm??(2).Type: GrantFiled: June 3, 2021Date of Patent: April 12, 2022Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji Yokoyama
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Publication number: 20220091548Abstract: According to one embodiment, a heating device includes a belt and a heat generating member. The belt has a tubular shape. The heat generating member is provided inside the belt. The heat generating member is formed in an arc shape along the inner peripheral surface of the belt. The heat generating member is slidably in contact with the inner peripheral surface of the belt. When the amount of deflection of the belt is D, the radius of curvature of the inner peripheral surface of the belt is A, and the radius of curvature of the outer peripheral surface of the heat generating member is B, the following equations (1) and (2) are satisfied: D?10 mm??(1) 0.4 mm?A?B?0 mm??(2).Type: ApplicationFiled: June 3, 2021Publication date: March 24, 2022Inventor: Shuji Yokoyama
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Publication number: 20220057734Abstract: According to one embodiment, a heating device includes a cylindrical belt, a heat generating member, and a support member. The heat generating member is disposed in an interior region surrounded by the belt and in contact with an inner peripheral surface of the belt. The support member is provided in the interior region surrounded by the belt and contacts and supports the heat generating member.Type: ApplicationFiled: May 13, 2021Publication date: February 24, 2022Inventor: Shuji YOKOYAMA
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Patent number: 11149103Abstract: To provide a photopolymerizable composition which can be quickly cured by light of from 300 nm to 450 nm, and a cured product of which is less colored. A photopolymerization sensitizer composition containing a compound represented by the following formula (1) and a compound, of which the maximum value of an absorption coefficient in a wavelength region ranging from at least 400 nm to at most 500 nm is higher than the maximum value of an absorption coefficient in a wavelength region ranging from at least 400 nm to at most 500 nm of said compound; and a photopolymerizable composition containing the photopolymerization sensitizer composition.Type: GrantFiled: April 24, 2017Date of Patent: October 19, 2021Assignee: Kawasaki Kasei Chemicals Ltd.Inventors: Shigeaki Numata, Shuji Yokoyama, Yasuaki Miki, Akihiko Yamada
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Publication number: 20210286301Abstract: A heating device for an image forming unit includes a heater unit, a cylindrical film, a support member, a first heat transfer unit, and a second heat transfer unit. The cylindrical film is at least partially disposed around the heater unit. The support member is configured to support the heater unit above the cylindrical film and such that the heater unit is located between the support member and the cylindrical film. The first heat transfer unit is disposed between the cylindrical film and the heater unit and in confronting relation with a first surface of the heater unit. The first heat transfer unit has a first contact area with the heater unit. The second heat transfer unit is disposed between the heater unit and the support member and in confronting relation with a second surface of the heater unit. The second surface is opposite the first surface.Type: ApplicationFiled: February 2, 2021Publication date: September 16, 2021Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji YOKOYAMA
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Publication number: 20210124292Abstract: According to one embodiment, a fixing device fixes a toner image formed on a medium to the medium. The fixing device includes a heating rotator which is rotatably supported, an auxiliary heating member which is disposed along an inner circumferential surface of the heating rotator, and swings as the heating rotator rotates, a lubricant supply member which is disposed at a position on which the swing auxiliary heating member abuts, and is impregnated with a lubricant, and a pressing rotator which abuts on the heating rotator, and forms a nip portion through which the medium passes.Type: ApplicationFiled: January 6, 2021Publication date: April 29, 2021Inventor: Shuji Yokoyama
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Publication number: 20210080883Abstract: A fixing device that fixes a toner image to a medium, includes: a heating body rotatably supported; an auxiliary heating member disposed along an inner surface of the heating rotation body; a temperature sensor facing the inner surface via the auxiliary heating member; a first elastic body configured to press, via a first force, the temperature sensor against the inner surface; and a second elastic body configured to press, via a second force, a sliding member against the inner surface. A product of a distance from a center of the auxiliary heating member to the first elastic body and the first elastic force is equal to a product of a distance from the center to the second elastic body and the second elastic force.Type: ApplicationFiled: September 30, 2020Publication date: March 18, 2021Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji YOKOYAMA
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Patent number: 10935912Abstract: According to one embodiment, a heating device includes a cylindrical body, a heater unit, a support member, a first heat transfer unit, and a second heat transfer unit. The cylindrical body has a film shape. The heater unit is disposed inside the cylindrical body. In the heater unit, the axial direction of the cylindrical body is taken as a longitudinal direction. The support member supports the heater unit. The first heat transfer unit is disposed between the inner surface of the cylindrical body and the heater unit. The first heat transfer unit abuts on a first surface of the heater unit. The second heat transfer unit is disposed between the heater unit and the support member. The second heat transfer unit abuts on a second surface of the heater unit opposite to the first surface.Type: GrantFiled: March 12, 2020Date of Patent: March 2, 2021Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji Yokoyama
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Patent number: 10915044Abstract: According to one embodiment, a fixing device fixes a toner image formed on a medium to the medium. The fixing device includes a heating rotator which is rotatably supported, an auxiliary heating member which is disposed along an inner circumferential surface of the heating rotator, and swings as the heating rotator rotates, a lubricant supply member which is disposed at a position on which the swing auxiliary heating member abuts, and is impregnated with a lubricant, and a pressing rotator which abuts on the heating rotator, and forms a nip portion through which the medium passes.Type: GrantFiled: April 16, 2020Date of Patent: February 9, 2021Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji Yokoyama
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Patent number: 10845757Abstract: An image processing apparatus includes a heating device a temperature sensor, and a controller. The heating device includes a rotator, a fan, an introduction duct, a cooling duct, and a movement mechanism. The introduction duct is shaped such that an airflow generated by the fan is directed towards and is incident on a first end portion of the rotator. The cooling duct extends between the introduction duct and a first end of the rotator, and faces the first end portion. The cooling duct includes a plurality of duct portions. The movement mechanism is configured to move the fan, the introduction duct, and at least one of the duct portions along the rotational axis. The temperature sensor is configured to detect a temperature at the first end portion. The controller is configured to control a movement of the movement mechanism based on a temperature detected by the temperature sensor.Type: GrantFiled: February 20, 2020Date of Patent: November 24, 2020Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventors: Yuki Kawashima, Masaya Tanaka, Shuji Yokoyama
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Patent number: 10824099Abstract: A fixing device that fixes a toner image to a medium, includes: a heating body rotatably supported; an auxiliary heating member disposed along an inner surface of the heating rotation body; a temperature sensor facing the inner surface via the auxiliary heating member; a first elastic body configured to press, via a first force, the temperature sensor against the inner surface; and a second elastic body configured to press, via a second force, a sliding member against the inner surface. A product of a distance from a center of the auxiliary heating member to the first elastic body and the first elastic force is equal to a product of a distance from the center to the second elastic body and the second elastic force.Type: GrantFiled: September 18, 2019Date of Patent: November 3, 2020Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventor: Shuji Yokoyama