Patents by Inventor Ryo Sugiyama
Ryo Sugiyama 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: 11987046Abstract: A printing apparatus comprises a conveyance unit configured to convey a sheet to a printing unit configured to perform printing; a control unit configured to cause the conveyance unit to hold the sheet onto which printing was performed by the printing unit; and a receiving unit configured to receive an ejection instruction for instructing to eject the sheet. The control unit, in a case where the receiving unit receives the ejection instruction, controls the conveyance unit to eject the sheet to outside of the apparatus after a predetermined time has elapsed.Type: GrantFiled: March 2, 2021Date of Patent: May 21, 2024Assignee: Canon Kabushiki KaishaInventors: Ryosuke Murata, Takuya Suto, Toshiro Sugiyama, Daigo Kuronuma, Kenji Shimamura, Ryo Harigae, Toshiaki Yamaguchi, Kouhei Tokuda
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Patent number: 11987045Abstract: A printing apparatus includes a conveyance unit including a pair of rotation members that nip a roll sheet, and configured to convey the sheet by rotation of the pair of rotation members, a printing unit, and a control unit configured to, upon executing a new print job, cause the conveyance unit to perform a preparatory operation in which the sheet is conveyed in a forward direction and then conveyed in a reverse direction and stopped. If a predetermined condition is met after completion of a previous print job, the control unit causes the conveyance unit to perform the preparatory operation, and if the predetermined condition is not met after completion of a previous print job, the control unit does not cause the conveyance unit to perform the preparatory operation.Type: GrantFiled: December 13, 2022Date of Patent: May 21, 2024Assignee: Canon Kabushiki KaishaInventors: Takuya Suto, Toshiro Sugiyama, Ryosuke Murata, Daigo Kuronuma, Kenji Shimamura, Ryo Harigae, Toshiaki Yamaguchi, Kouhei Tokuda
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Patent number: 11964838Abstract: A printing apparatus includes a printing unit configured to print an image on a sheet; a first exit path from which the sheet with the image printed thereon by the printing unit is discharged while being reversed; a second exit path from which the sheet with the image printed thereon by the printing unit is discharged without being reversed; and a switch member configured to be pivotably arranged so as to switch between the first exit path and the second exit path. The first exit path passes above a pivot center of the switch member, and the second exit path passes below the pivot center.Type: GrantFiled: November 17, 2021Date of Patent: April 23, 2024Assignee: Canon Kabushiki KaishaInventors: Shinya Asano, Takeshi Koda, Toshiro Sugiyama, Waichiro Saiki, Tomohiro Suzuki, Ryo Kobayashi, Tomoyuki Nagase
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Publication number: 20240114917Abstract: Provided is a fat simulating composition containing an aqueous phase and an oil phase dispersed in the aqueous phase, in which a melting point or a crystallization temperature of the oil phase is in a range of from ?20° C. to 60° C., and an absolute value of a difference between a d-line refractive index of the aqueous phase and a d-line refractive index of the oil phase satisfies a relationship of 0.01?|oil phase refractive index?aqueous phase refractive index|?0.115.Type: ApplicationFiled: December 13, 2023Publication date: April 11, 2024Inventors: Ryo MATSUNO, Hiroyuki SUGIYAMA
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Publication number: 20240111227Abstract: A developing device comprising a developing roller in which a vicinity of an outer surface of a surface layer is hardened, a toner supply roller, and a toner, wherein the developing roller has fine particles comprising an organosilicon compound and having a substantially hemispherical shape on the outer surface, a particle diameter of the fine particles is within a specific range, and the toner comprises silica particles as an external additive and a adhesion rate of the silica particles is 50% or more.Type: ApplicationFiled: September 8, 2023Publication date: April 4, 2024Inventors: RYO SUGIYAMA, TAIJI KATSURA
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Publication number: 20230161275Abstract: Provided is an electrophotographic member including: a substrate having electroconductivity; and a monolayer surface layer formed on the substrate. The surface layer has a matrix containing a crosslinked resin as a binder, and holds at least one particle containing an inorganic layered compound having an ion exchange capacity so that at least a part of the at least one particle is exposed from an outer surface of the surface layer. An elastic modulus of the matrix, measured in a region of a section in a thickness direction of the surface layer from the outer surface of the surface layer to a depth of 0.1 ?m, is 200 MPa or more.Type: ApplicationFiled: November 15, 2022Publication date: May 25, 2023Inventors: Masashi Uno, Ryo Sugiyama, Kenta Matsunaga, Akio Nishi
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Patent number: 11650516Abstract: Provided is a developing device including: a toner; and a developer carrying member. The developer carrying member includes an electroconductive substrate and a surface layer on the substrate, the surface layer being a single layer and including a matrix containing a crosslinked urethane resin as a binder, wherein E1 ?200 MPa and 10 MPa?E2 ?100 MPa, where E1 is an elastic modulus of the matrix in a first region from an outer surface of the surface layer to a depth of 0.1 and E2 is an elastic modulus of the matrix in a second region from a depth of 1.0 to 1.1 ?m from the outer surface. The toner includes a toner particle containing a binder resin and a colorant and having a Martens hardness of 85 to 1,100 MPa when measured under a condition of a maximum load of 2.0×10?4 N.Type: GrantFiled: April 15, 2022Date of Patent: May 16, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Tomoya Uesugi, Kazuaki Nagaoka, Toru Ishii, Ryo Sugiyama, Akio Nishi, Kentaro Yamawaki, Minoru Nakamura
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Patent number: 11465383Abstract: Provided an electrophotographic member capable of causing less fog in an H/H environment even when used in a torque-reduced image forming apparatus. The member comprises an electro-conductive substrate, an electro-conductive layer thereon and insulating parts, the member having a surface having an electrical insulating first region and an electro-conductive second region, the first region and the second region being adjacent to each other, a total area of the second region in a square region put on an outer surface of the member is 30% to 80% of an area of the square region; two or more of the 200 straight lines drawn in the square region at an interval of 5 ?m pass the second region at least once, and, the number of line segment LS having a length of 200 ?m or more is 5% or less of the total number of the line segment LS.Type: GrantFiled: July 30, 2019Date of Patent: October 11, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Sosuke Yamaguchi, Shohei Urushihara, Kazuaki Nagaoka, Ryo Sugiyama, Minoru Nakamura
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Publication number: 20220236663Abstract: Provided is a developing device including: a toner; and a developer carrying member. The developer carrying member includes an electroconductive substrate and a surface layer on the substrate, the surface layer being a single layer and including a matrix containing a crosslinked urethane resin as a binder, wherein E1?200 MPa and 10 MPa?E2?100 MPa, where E1 is an elastic modulus of the matrix in a first region from an outer surface of the surface layer to a depth of 0.1 and E2 is an elastic modulus of the matrix in a second region from a depth of 1.0 to 1.1 ?m from the outer surface. The toner includes a toner particle containing a binder resin and a colorant and having a Martens hardness of 85 to 1,100 MPa when measured under a condition of a maximum load of 2.0×10?4 N.Type: ApplicationFiled: April 15, 2022Publication date: July 28, 2022Inventors: Tomoya Uesugi, Kazuaki Nagaoka, Toru Ishii, Ryo Sugiyama, Akio Nishi, Kentaro Yamawaki, Minoru Nakamura
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Publication number: 20220100145Abstract: A process cartridge includes a toner, a regulating member, and a developing roller including a conductive substrate, an elastic layer, and a surface layer which includes a binder resin, a first resin particle having an elastic coefficient of 100 to 10,000 MPa, and a second resin particle having an elastic coefficient of 2 to 50 MPa and in which the outer surface has a first protruded portion and a second protruded portion 5.0 ?m or more lower than the first protruded portion and has an average maximum height of 6 to 18 ?m. The toner includes a toner particle and an external additive A that is a silica particle having a major diameter of 40 to 400 nm, a surface coverage of the toner particle by the external additive A is 3.0% or more, and a dispersion degree evaluation index D of the external additive A is 2.0 or less.Type: ApplicationFiled: September 13, 2021Publication date: March 31, 2022Inventors: Shintaro Kawaguchi, Masamichi Sato, Masatake Tanaka, Ryo Sugiyama
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Patent number: 10976683Abstract: Provided is an electrophotographic member in which density unevenness of an image is less likely to occur even in the case of outputting an image after standing in a high-temperature and high-humidity environment for a long period of time. The electrophotographic member includes: an electroconductive substrate; an electroconductive elastic layer on or above the substrate; and an insulating portion on the elastic layer, an outer surface of the electrophotographic member being composed of an outer surface of the insulating portion and an outer surface of the elastic layer that is not covered with the insulating portion, wherein the elastic layer contains a urethane resin as a first resin, and the elastic layer has a region from the outer surface of the elastic layer constituting the outer surface of the electrophotographic member to a depth of 1 ?m, the region further containing a second resin.Type: GrantFiled: July 19, 2019Date of Patent: April 13, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Kazutoshi Ishida, Yuji Sakurai, Minoru Nakamura, Ryo Sugiyama, Toru Ishii, Kenta Matsunaga
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Patent number: 10942471Abstract: The electrophotographic member includes: an electroconductive substrate; and a surface layer having a mono-layer structure, wherein the surface layer has a matrix containing a cross-linked urethane resin as a binder, and when an elastic modulus of the matrix in a first region in a thickness direction from an outer surface of the surface layer to a depth of 0.1 ?m from the outer surface of the surface layer is defined as E1, and an elastic modulus of the matrix in a second region in a thickness direction from a depth of 1.0 ?m from the outer surface of the surface layer to 1.1 ?m from the outer surface of the surface layer is defined as E2, E1 and E2 satisfy the following Expressions (1) and (2), respectively: E1?200 MPa??(1); and 10 MPa?E2?100 MPa??(2).Type: GrantFiled: March 17, 2020Date of Patent: March 9, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Yoshinobu Ogawa, Ryo Sugiyama, Kazuaki Nagaoka, Kenta Matsunaga, Toru Ishii, Hideya Arimura, Fumihiko Utsuno, Tomoya Uesugi, Wataru Moriai, Masashi Uno
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Patent number: 10935903Abstract: The developing roller includes an electro-conductive substrate and a covering layer on the electro-conductive substrate, the covering layer including a matrix and an electro-conductive particle dispersed in the matrix, an arithmetic mean value of the current value is 300 pA or less and the standard deviation of the current value is 0.1-fold or less of the current value, a standard deviation of a potential is 3.0 V or more, and an arithmetic mean value of a volume resistivity is 1010 ?·cm or less, and a standard deviation of the volume resistivity is 1-fold or more of the arithmetic mean value of the volume resistivity.Type: GrantFiled: April 15, 2019Date of Patent: March 2, 2021Assignee: Canon Kabushiki KaishaInventors: Ryo Sugiyama, Yuji Sakurai, Kazutoshi Ishida
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Patent number: 10895823Abstract: A developing roller that enables the image density of electrophotographic images to be kept uniform even when used in an environment at a high temperature and a high humidity for a long period. The developing roller includes an electro-conductive mandrel and an electro-conductive layer on the mandrel, having an outer surface constituted by at least a first region which is electrically insulating, and a second region, the second region having higher electro-conductivity than that of the first region, the first region being arranged adjacent to the second region, the first region being disposed on an outer surface of the electro-conductive layer, the first region having a Vickers hardness of 10.0 or more as measured at an outer surface thereof, and the first region having a fracture toughness value of 800 Pa·m0.5 or more as measured at the outer surface thereof by an indentation fracture method.Type: GrantFiled: May 8, 2020Date of Patent: January 19, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Masashi Uno, Ryo Sugiyama, Kenta Matsunaga, Kazuaki Nagaoka
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Patent number: 10895824Abstract: A developing roller that suppresses contamination of the surface of a photosensitive member and also obtains a high-quality image. The developing roller includes an electro-conductive substrate, an electro-conductive elastic layer and a surface layer which are stacked in this order, wherein the surface layer has resin particles that are dispersed in a polyurethane matrix, an outer surface of the surface layer has a first protrusion originating in first resin particle and a second protrusion originating in second resin particle, wherein the first resin particle contains polyurethane, an elastic modulus E1 of the first resin particle is 100 to 2000 MPa, an elastic modulus E2 of the second resin particle is 2 to 50 MPa, a maximum height roughness Rz of the outer surface is 6 to 18 ?m, and a peak vertex density Spd is 5.0×103 to 5.0×104(1/mm2).Type: GrantFiled: March 27, 2020Date of Patent: January 19, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Ryo Sugiyama, Yoshinobu Ogawa, Masashi Uno, Tomoya Uesugi, Kenta Matsunaga, Wataru Moriai
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Publication number: 20200363751Abstract: A developing roller that enables the image density of electrophotographic images to be kept uniform even when used in an environment at a high temperature and a high humidity for a long period. The developing roller includes an electro-conductive mandrel and an electro-conductive layer on the mandrel, having an outer surface constituted by at least a first region which is electrically insulating, and a second region, the second region having higher electro-conductivity than that of the first region, the first region being arranged adjacent to the second region, the first region being disposed on an outer surface of the electro-conductive layer, the first region having a Vickers hardness of 10.0 or more as measured at an outer surface thereof, and the first region having a fracture toughness value of 800 Pa·m0.5 or more as measured at the outer surface thereof by an indentation fracture method.Type: ApplicationFiled: May 8, 2020Publication date: November 19, 2020Inventors: Masashi Uno, Ryo Sugiyama, Kenta Matsunaga, Kazuaki Nagaoka
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Patent number: 10831126Abstract: A developing roller is capable of preventing the generation of a difference in image density between a central portion and an end portion of an electrographic image. The developing roller has an electro-conductive mandrel and an electro-conductive layer on the mandrel, the electro-conductive layer has a crown shape in which an outer diameter of a central portion in a direction along the mandrel is larger than outer diameters of both end portions in the direction along the mandrel, an outer surface of the developing roller includes a first region having an electrically insulating property and a second region having a higher conductive property than the first region, and the first region and the second region are disposed adjacent to each other.Type: GrantFiled: August 20, 2019Date of Patent: November 10, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Kenta Matsunaga, Minoru Nakamura, Kazuaki Nagaoka, Ryo Sugiyama, Masashi Uno, Fumihiko Utsuno
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Patent number: 10831127Abstract: Provided is an electrophotographic developing member capable of sufficiently increasing a density of an image initially output from a standby state. The developing member includes: a substrate; a porous electroconductive elastic layer on the substrate; and an electroconductive solid layer on the electroconductive elastic layer, in which an outer surface of the developing member includes a first region having an electrical insulating surface and a second region having an electroconductive surface, the first region and the second region are arranged to be adjacent to each other, and the first region is constituted by an electrical insulating portion disposed on an outer surface of the electroconductive solid layer.Type: GrantFiled: September 13, 2019Date of Patent: November 10, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Fumihiko Utsuno, Minoru Nakamura, Kazuaki Nagaoka, Ryo Sugiyama
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Publication number: 20200310283Abstract: The electrophotographic member includes: an electroconductive substrate; and a surface layer having a mono-layer structure, wherein the surface layer has a matrix containing a cross-linked urethane resin as a binder, and when an elastic modulus of the matrix in a first region in a thickness direction from an outer surface of the surface layer to a depth of 0.1 ?m from the outer surface of the surface layer is defined as E1, and an elastic modulus of the matrix in a second region in a thickness direction from a depth of 1.0 ?m from the outer surface of the surface layer to 1.1 ?m from the outer surface of the surface layer is defined as E2, E1 and E2 satisfy the following Expressions (1) and (2), respectively: E1?200 MPa??(1); and 10 MPa?E2?100 MPa??(2).Type: ApplicationFiled: March 17, 2020Publication date: October 1, 2020Inventors: Yoshinobu Ogawa, Ryo Sugiyama, Kazuaki Nagaoka, Kenta Matsunaga, Toru Ishii, Hideya Arimura, Fumihiko Utsuno, Tomoya Uesugi, Wataru Moriai, Masashi Uno
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Publication number: 20200310282Abstract: A developing roller that suppresses contamination of the surface of a photosensitive member and also obtains a high-quality image. The developing roller includes an electro-conductive substrate, an electro-conductive elastic layer and a surface layer which are stacked in this order, wherein the surface layer has resin particles that are dispersed in a polyurethane matrix, an outer surface of the surface layer has a first protrusion originating in first resin particle and a second protrusion originating in second resin particle, wherein the first resin particle contains polyurethane, an elastic modulus Ei of the first resin particle is 100 to 2000 MPa, an elastic modulus E2 of the second resin particle is 2 to 50 MPa, a maximum height roughness Rz of the outer surface is 6 to 18 ?m, and a peak vertex density Spd is 5.0×103 to 5.0×104(1/mm2).Type: ApplicationFiled: March 27, 2020Publication date: October 1, 2020Inventors: Ryo Sugiyama, Yoshinobu Ogawa, Masashi Uno, Tomoya Uesugi, Kenta Matsunaga, Wataru Moriai