Patents by Inventor Shinichi Hagiwara
Shinichi Hagiwara 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: 11914297Abstract: A cover film for dry film resist, includes a polyethylene film including a first mixture of high pressure low density polyethylene (LDPE) and linear low density polyethylene (LLDPE). The first mixture has an LDPE to LLDPE ratio by mass of from 90:10 to 60:40. The polyethylene film is free of a plasticizer, anti-blocking agent, slipping agent, and anti-static agent. The number of fish eyes having a minimum diameter of 0.2 mm or greater present in 100 m2 of the 19 ?m thick cover film in plan view is at most two. The polyethylene film has a thickness of from 10 to 20 ?m and a haze value of from 12 to 25%.Type: GrantFiled: June 17, 2019Date of Patent: February 27, 2024Assignee: TAMAPOLY CO., LTD.Inventors: Shinichi Oya, Toshiaki Hagiwara, Hitoshi Nakamura
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Patent number: 11442613Abstract: An electronic apparatus according to the present invention performs control such that a change in a first designation mode is performed in accordance with reception of a first type of operation without moving an input position in a predetermined region, wherein in the change, a specific change target is changed to a change destination that corresponds to a region to which the input position in the first type of operation belongs, and a change in a second designation mode is performed in accordance with reception a second type of operation of moving the input position in the predetermined region, wherein in the change, the specific change target is changed to a change destination that differs, by a change amount based on a movement amount in the second type of operation, from the change destination that is changed in the first type of operation.Type: GrantFiled: October 6, 2020Date of Patent: September 13, 2022Assignee: CANON KABUSHIKI KAISHAInventor: Shinichi Hagiwara
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Patent number: 11249416Abstract: Provided is an image forming apparatus including an image bearing member, a charging member, an exposing member, a developer carrying member, a storage member to store a first lifetime threshold for the first image forming mode, a second lifetime threshold for the second image forming mode and a value related to a driving amount of the image bearing member. The image forming apparatus further includes a controller to (i) perform a first determination regarding the lifetime corresponding to the first mode based on the value related to the driving amount and the first lifetime threshold and (ii) perform a second determination regarding the lifetime corresponding to the second mode based on the value related to the driving amount and the second lifetime threshold, and a notifying unit to perform a notification based on a result of the first or second determination to the image bearing member.Type: GrantFiled: April 20, 2021Date of Patent: February 15, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Yuichiro Hirata, Shinichi Hagiwara
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Patent number: 11175737Abstract: An electronic device comprising: a control unit performs control such that a selected position in a display is changed, wherein the control unit performs control such that the selected position is changed based on gazing at a first position in response to satisfaction of a viewed point condition corresponding to a fact that gazing at the first position at a first distance from the selected position has been performed for a first period, and the selected position is changed based on gazing at a second position in response to satisfaction of a viewed point condition corresponding to a fact that gazing at the second position at a second distance which is farther from the selected position than the first distance, has been performed for a second period shorter than the first period.Type: GrantFiled: July 29, 2020Date of Patent: November 16, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Shinichi Hagiwara
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Patent number: 11144007Abstract: A process cartridge using an image forming apparatus, including a rotatable image bearing member having a circumferential surface; a developing unit configured to supply a developing agent to the image bearing member; and a cleaning member that cleans the circumferential surface, wherein the developing agent contains a toner including toner particles and a metal soap, the image bearing member includes a plurality of grooves formed on the circumferential surface to extend in a circumferential direction of the circumferential surface and to be arranged side by side in a rotation axis direction, and the plurality of grooves and portions between the grooves form concave-convex portions on the circumferential surface. The circumferential surface of the image bearing member had surface roughness Rz of 0<Rz?0.70 ?m and average interval Sm between concave-convex portions on the circumferential surface of 0<Sm?70.0 ?m.Type: GrantFiled: November 12, 2019Date of Patent: October 12, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Shinichi Hagiwara, Yasukazu Ikami, Kosuke Ikada, Keitaro Nakata, Hideharu Shimozawa
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Publication number: 20210255563Abstract: Provided is an image forming apparatus including an image bearing member, a charging member, an exposing member, a developer carrying member, a storage member to store a first lifetime threshold for the first image forming mode, a second lifetime threshold for the second image forming mode and a value related to a driving amount of the image bearing member. The image forming apparatus further includes a controller to (i) perform a first determination regarding the lifetime corresponding to the first mode based on the value related to the driving amount and the first lifetime threshold and (ii) perform a second determination regarding the lifetime corresponding to the second mode based on the value related to the driving amount and the second lifetime threshold, and a notifying unit to perform a notification based on a result of the first or second determination to the image bearing member.Type: ApplicationFiled: April 20, 2021Publication date: August 19, 2021Inventors: Yuichiro Hirata, Shinichi Hagiwara
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Patent number: 11016409Abstract: Provided is an image forming apparatus including an image bearing member, a charging member, an exposing member, a developer carrying member, a storage member to store a first lifetime threshold for the first image forming mode, a second lifetime threshold for the second image forming mode and a value related to a driving amount of the image bearing member. The image forming apparatus further includes a controller to (i) perform a first determination regarding the lifetime corresponding to the first mode based on the value related to the driving amount and the first lifetime threshold and (ii) perform a second determination regarding the lifetime corresponding to the second mode based on the value related to the driving amount and the second lifetime threshold, and a notifying unit to perform a notification based on a result of the first or second determination to the image bearing member.Type: GrantFiled: June 8, 2020Date of Patent: May 25, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Yuichiro Hirata, Shinichi Hagiwara
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Patent number: 11003106Abstract: A charging member 2 that charges an image bearing member 1 has an electrically conductive support and an elastic layer in contact with the image bearing member 1. The elastic layer includes a semi-conductive rubber composition having a matrix-domain structure including a matrix and domains having electric conductivity. The matrix has a higher volume resistivity than the domain. The developer includes a toner having toner particles. The toner particles each have a surface layer including an organosilicon polymer. The organosilicon polymer has a structure represented by R—SiO3/2 (R is a hydrocarbon group having at least 1 and not more than 6 carbon atoms). The adhesion ratio of the organosilicon polymer on the surface of the toner particle is 90% or more.Type: GrantFiled: November 11, 2019Date of Patent: May 11, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Shinichi Agata, Shinichi Hagiwara, Yoshihiro Mitsui, Kosuke Ikada, Kentaro Yamawaki
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Publication number: 20210103343Abstract: An electronic apparatus according to the present invention performs control such that a change in a first designation mode is performed in accordance with reception of a first type of operation without moving an input position in a predetermined region, wherein in the change, a specific change target is changed to a change destination that corresponds to a region to which the input position in the first type of operation belongs, and a change in a second designation mode is performed in accordance with reception a second type of operation of moving the input position in the predetermined region, wherein in the change, the specific change target is changed to a change destination that differs, by a change amount based on a movement amount in the second type of operation, from the change destination that is changed in the first type of operation.Type: ApplicationFiled: October 6, 2020Publication date: April 8, 2021Inventor: Shinichi HAGIWARA
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Patent number: 10955792Abstract: A process cartridge includes a developing device that supplies developer to a photosensitive member and an elastic portion that cleans a peripheral surface of the photosensitive member. Multiple grooves are formed side by side in a generatrix direction on the peripheral surface. The developer contains a toner including a toner particle and an organosilicon polymer having a structure represented by R—SiO3/2 covering the toner particle surface, where R represents a hydrocarbon group having at least 1 and not more than 6 carbon atoms. When a penetration amount of the elastic portion with respect to the photosensitive member is set as ? (mm), and a fixing rate of the organosilicon polymer on the surface of the toner particle is set as ? (%), ??0.02×??0.4 is satisfied.Type: GrantFiled: November 8, 2019Date of Patent: March 23, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Shunsuke Matsushita, Yoshihiro Mitsui, Yasukazu Ikami, Shinichi Hagiwara, Kosuke Ikada, Katsuyuki Nonaka
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Publication number: 20210034150Abstract: An electronic device comprising: a control unit performs control such that a selected position in a display is changed, wherein the control unit performs control such that the selected position is changed based on gazing at a first position in response to satisfaction of a viewed point condition corresponding to a fact that gazing at the first position at a first distance from the selected position has been performed for a first period, and the selected position is changed based on gazing at a second position in response to satisfaction of a viewed point condition corresponding to a fact that gazing at the second position at a second distance which is farther from the selected position than the first distance, has been performed for a second period shorter than the first period.Type: ApplicationFiled: July 29, 2020Publication date: February 4, 2021Inventor: Shinichi Hagiwara
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Patent number: 10852660Abstract: An image forming apparatus includes a regulating member that regulates a developing agent that a developing agent carrying member carries in order to develop an electrostatic image, and a regulatory bias application portion that applies a regulatory bias to the regulating member, wherein the developing agent includes a toner containing a toner particle, inorganic silicon fine particles present on the surface of the toner particle, and a metal soap, wherein the amount of water-washing migration of the inorganic silicon fine particles is 0.20 mass % or less, wherein a peripheral speed ratio, which is a ratio of a peripheral speed of the developing agent carrying member to a peripheral speed of an image bearing member, has a range of 120% to 300%, and a dark portion potential Vd on the surface of the image bearing member and a regulatory bias Vb satisfy the relationship of Vd<Vb.Type: GrantFiled: November 7, 2019Date of Patent: December 1, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Kosuke Ikada, Katsuichi Abe, Kodai Hayashi, Yasukazu Ikami, Shinichi Hagiwara, Shuhei Kawasaki
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Publication number: 20200301309Abstract: Provided is an image forming apparatus including an image bearing member, a charging member, an exposing member, a developer carrying member, a storage member to store a first lifetime threshold for the first image forming mode, a second lifetime threshold for the second image forming mode and a value related to a driving amount of the image bearing member. The image forming apparatus further includes a controller to (i) perform a first determination regarding the lifetime corresponding to the first mode based on the value related to the driving amount and the first lifetime threshold and (ii) perform a second determination regarding the lifetime corresponding to the second mode based on the value related to the driving amount and the second lifetime threshold, and a notifying unit to perform a notification based on a result of the first or second determination to the image bearing member.Type: ApplicationFiled: June 8, 2020Publication date: September 24, 2020Inventors: Yuichiro Hirata, Shinichi Hagiwara
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Patent number: 10732534Abstract: A charging member that contacts an image bearing member and charges the image bearing member has an electrically conductive support and an elastic layer in contact with the image bearing member. The elastic layer includes a semiconductive rubber composition including a matrix and domains having electric conductivity. The semiconductive rubber composition has a sea-island structure in which the domains form an island phase and the matrix forms a sea phase. The matrix has a higher volume resistivity than the domains. The developer includes a toner, and the toner has a Martens hardness of at least 200 MPa and not more than 1100 MPa when measured under a maximum load of 2.0×10?4 N.Type: GrantFiled: November 8, 2019Date of Patent: August 4, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Go Shindo, Shinichi Hagiwara, Yoshihiro Mitsui, Kosuke Ikada, Kentaro Yamawaki
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Patent number: 10719029Abstract: Provided is an image forming apparatus including an image bearing member, a charging member, an exposing member, a developer carrying member, a storage member to store a first lifetime threshold for the first image forming mode, a second lifetime threshold for the second image forming mode and a value related to a driving amount of the image bearing member. The image forming apparatus further includes a controller to (i) perform a first determination regarding the lifetime corresponding to the first mode based on the value related to the driving amount and the first lifetime threshold and (ii) perform a second determination regarding the lifetime corresponding to the second mode based on the value related to the driving amount and the second lifetime threshold, and a notifying unit to perform a notification based on a result of the first or second determination to the image bearing member.Type: GrantFiled: December 16, 2019Date of Patent: July 21, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Yuichiro Hirata, Shinichi Hagiwara
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Publication number: 20200150553Abstract: A charging member 2 that charges an image bearing member 1 has an electrically conductive support and an elastic layer in contact with the image bearing member 1. The elastic layer includes a semi-conductive rubber composition having a matrix-domain structure including a matrix and domains having electric conductivity. The matrix has a higher volume resistivity than the domain. The developer includes a toner having toner particles. The toner particles each have a surface layer including an organosilicon polymer. The organosilicon polymer has a structure represented by R—SiO3/2 (R is a hydrocarbon group having at least 1 and not more than 6 carbon atoms). The adhesion ratio of the organosilicon polymer on the surface of the toner particle is 90% or more.Type: ApplicationFiled: November 11, 2019Publication date: May 14, 2020Inventors: Shinichi Agata, Shinichi Hagiwara, Yoshihiro Mitsui, Kosuke Ikada, Kentaro Yamawaki
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Publication number: 20200150552Abstract: A charging member that contacts an image bearing member and charges the image bearing member has an electrically conductive support and an elastic layer in contact with the image bearing member. The elastic layer includes a semiconductive rubber composition including a matrix and domains having electric conductivity. The semiconductive rubber composition has a sea-island structure in which the domains form an island phase and the matrix forms a sea phase. The matrix has a higher volume resistivity than the domains. The developer includes a toner, and the toner has a Martens hardness of at least 200 MPa and not more than 1100 MPa when measured under a maximum load of 2.0×10?4 N.Type: ApplicationFiled: November 8, 2019Publication date: May 14, 2020Inventors: Go Shindo, Shinichi Hagiwara, Yoshihiro Mitsui, Kosuke Ikada, Kentaro Yamawaki
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Publication number: 20200150583Abstract: A process cartridge including: a developing device to supply a developer to a photosensitive member; and a plate-shaped elastic portion that cleans a peripheral surface of the photosensitive member, wherein, multiple grooves extend in a circumferential direction and are formed to be side by side in a rotation axis direction on the peripheral surface, the developer contains a toner including a toner particle and an organosilicon polymer having a structure represented by R—SiO3/2 covering the surface of the toner particle, and when a penetration amount of the plate-shaped elastic portion with respect to the photosensitive member is set as ? (mm), and a fixing rate of the organosilicon polymer on the surface of the toner particle is set as ? (%), ??0.02×??0.4 is satisfied (R represents a hydrocarbon group having at least 1 and not more than 6 carbon atoms).Type: ApplicationFiled: November 8, 2019Publication date: May 14, 2020Inventors: Shunsuke Matsushita, Yoshihiro Mitsui, Yasukazu Ikami, Shinichi Hagiwara, Kosuke Ikada, Katsuyuki Nonaka
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Publication number: 20200150555Abstract: An image forming apparatus includes a regulating member that regulates a developing agent that a developing agent carrying member carries in order to develop an electrostatic image, and a regulatory bias application portion that applies a regulatory bias to the regulating member, wherein the developing agent includes a toner containing a toner particle, inorganic silicon fine particles present on the surface of the toner particle, and a metal soap, wherein the amount of water-washing migration of the inorganic silicon fine particles is 0.20 mass % or less, wherein a peripheral speed ratio, which is a ratio of a peripheral speed of the developing agent carrying member to a peripheral speed of an image bearing member, has a range of 120% to 300%, and a dark portion potential Vd on the surface of the image bearing member and a regulatory bias Vb satisfy the relationship of Vd<Vb.Type: ApplicationFiled: November 7, 2019Publication date: May 14, 2020Inventors: Kosuke Ikada, Katsuichi Abe, Kodai Hayashi, Yasukazu Ikami, Shinichi Hagiwara, Shuhei Kawasaki
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Publication number: 20200150584Abstract: A process cartridge using an image forming apparatus, including a rotatable image bearing member having a circumferential surface; a developing unit configured to supply a developing agent to the image bearing member; and a cleaning member that cleans the circumferential surface, wherein the developing agent contains a toner including toner particles and a metal soap, the image bearing member includes a plurality of grooves formed on the circumferential surface to extend in a circumferential direction of the circumferential surface and to be arranged side by side in a rotation axis direction, and the plurality of grooves and portions between the grooves form concave-convex portions on the circumferential surface. The circumferential surface of the image bearing member had surface roughness Rz of 0<Rz?0.70 ?m and average interval Sm between concave-convex portions on the circumferential surface of 0<Sm?70.0 ?m.Type: ApplicationFiled: November 12, 2019Publication date: May 14, 2020Inventors: Shinichi Hagiwara, Yasukazu Ikami, Kosuke Ikada, Keitaro Nakata, Hideharu Shimozawa