Patents by Inventor Norio Nakai
Norio Nakai 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: 11099352Abstract: Provided is an operating apparatus including: a main body in which a first groove is formed; an operating member which is rotatably held by the main body and in which a second groove is formed to face the first groove; an engaging member be movable and engaged with the first groove and the second groove; a first buffer member arranged at one end of a movable range of the engaging member in at least one of the first groove and the second groove, a second buffer member arranged at the other end of the movable range in at least one of the first groove and the second groove. The first buffer member and the second buffer member are different from each other in at least one of a material, a shape, a size, and an orientation thereof.Type: GrantFiled: August 12, 2019Date of Patent: August 24, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Norio Nakai
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Publication number: 20200073080Abstract: Provided is an operating apparatus including: a main body in which a first groove is formed; an operating member which is rotatably held by the main body and in which a second groove is formed to face the first groove; an engaging member be movable and engaged with the first groove and the second groove; a first buffer member arranged at one end of a movable range of the engaging member in at least one of the first groove and the second groove, a second buffer member arranged at the other end of the movable range in at least one of the first groove and the second groove. The first buffer member and the second buffer member are different from each other in at least one of a material, a shape, a size, and an orientation thereof.Type: ApplicationFiled: August 12, 2019Publication date: March 5, 2020Inventor: Norio Nakai
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Patent number: 9167145Abstract: An image pickup apparatus includes a photographic lens including a photographic optical system, a photographic camera configured to be attachable to and detachable from the photographic lens and including an image sensor configured to receive light from the photographic lens, and a receiving device connected to the photographic lens via a cable and configured to receive an operation signal for controlling the photographic lens or the photographic camera from a remote operation device, wherein the receiving device is configured to be fixable to the photographic lens or the photographic camera by a plurality of different methods.Type: GrantFiled: April 6, 2011Date of Patent: October 20, 2015Assignee: Canon Kabushiki KaishaInventors: Takeshi Idemura, Norio Nakai
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Patent number: 8679710Abstract: The present invention provides an electrophotographic photoreceptor comprising a photosensitive layer that contains at least a charge generating agent, a hole transport agent and a prede mulas (A) and (B). The electrophotographic photoreceptor prevents image defect termined additive. The hole transport agent satisfies the following for from occurring and can meet the demand for higher speed image forming apparatuses, by reducing the adhesion of paper dust and preventing the occurrence of cracks. ? ? M < 1.2 × 10 - 8 ( A ) ? ? > 5.Type: GrantFiled: December 22, 2005Date of Patent: March 25, 2014Assignee: Kyocera Document Solutions Inc.Inventors: Daisuke Kuboshima, Eiichi Miyamoto, Kazunari Hamasaki, Norio Nakai, Yoshio Inagaki, Hideki Okada, Tetsuya Ichiguchi, Keiji Maruo
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Publication number: 20110249174Abstract: An image pickup apparatus includes a photographic lens including a photographic optical system, a photographic camera configured to be attachable to and detachable from the photographic lens and including an image sensor configured to receive light from the photographic lens, and a receiving device connected to the photographic lens via a cable and configured to receive an operation signal for controlling the photographic lens or the photographic camera from a remote operation device, wherein the receiving device is configured to be fixable to the photographic lens or the photographic camera by a plurality of different methods.Type: ApplicationFiled: April 6, 2011Publication date: October 13, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Takeshi Idemura, Norio Nakai
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Patent number: 7700251Abstract: An electrophotographic photoconductor having an excellent crack resistance and wear resistance as well as excellent sensitivity characteristics, while keeping good image characteristics of the photoconductor is provided. In addition, an image-forming apparatus equipped with such an electrophotographic photoconductor is also provided. The electrophotographic photoconductor includes a photosensitive layer containing at least a charge-generating agent, a hole-transfer agent, and a binder resin on a conductive substrate.Type: GrantFiled: October 18, 2006Date of Patent: April 20, 2010Assignee: Kyocera Mita CorporationInventors: Norio Nakai, Kazunari Hamasaki, Daisuke Kuboshima, Yoshio Inagaki, Hideki Okada, Tetsuya Ichiguchi, Keiji Maruo
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Publication number: 20080286673Abstract: The present invention provides a single layer type electrophotographic photoconductor which exhibits the small number of generated black spots in a formed image and exhibits the excellent sensitivity characteristic even when the photoconductor is used for a long time or a photoconductor drum is rotated at a high speed and an image display device which includes the single layer type electrophotographic photoconductor. In the single layer type electrophotographic photoconductor which includes a photoconductive layer containing a binding resin, a hole transporting agent and an charge generating agent, the photoconductor contains a water-repellant polycarbonate resin as the binding resin, and a contact angle of pure water (measured temperature: 25° C.) with respect to the photoconductive layer is set to 100° or more.Type: ApplicationFiled: July 18, 2008Publication date: November 20, 2008Inventors: Daisuke Kuboshima, Kazunari Hamasaki, Norio Nakai
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Patent number: 7416825Abstract: The present invention provides a single layer type electrophotographic photoconductor which exhibits the small number of generated black spots in a formed image and exhibits the excellent sensitivity characteristic even when the photoconductor is used for a long time or a photoconductor drum is rotated at a high speed and an image display device which includes the single layer type electrophotographic photoconductor. In the single layer type electrophotographic photoconductor which includes a photoconductive layer containing a binding resin, a hole transporting agent and an charge generating agent, the photoconductor contains a water-repellant polycarbonate resin as the binding resin, and a contact angle of pure water (measured temperature: 25° C.) with respect to the photoconductive layer is set to 100° or more.Type: GrantFiled: January 4, 2006Date of Patent: August 26, 2008Assignee: Kyocera Mita CorporationInventors: Daisuke Kuboshima, Kazunari Hamasaki, Norio Nakai
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Publication number: 20070111118Abstract: An electrophotographic photoconductor having an excellent crack resistance and wear resistance as well as excellent sensitivity characteristics, while keeping good image characteristics of the photoconductor is provided. In addition, an image-forming apparatus equipped with such an electrophotographic photoconductor is also provided. The electrophotographic photoconductor includes a photosensitive layer containing at least a charge-generating agent, a hole-transfer agent, and a binder resin on a conductive substrate.Type: ApplicationFiled: October 18, 2006Publication date: May 17, 2007Inventors: Norio Nakai, Kazunari Hamasaki, Daisuke Kuboshima, Yoshio Inagaki, Hideki Okada, Tetsuya Ichiguchi, Keiji Maruo
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Publication number: 20070077507Abstract: The present invention provides an electrophotographic photoconductor which can reduce the generation of fogging under a high-temperature and high-moisture condition and can be easily manufactured, and a method of manufacturing such an electrophotographic photoconductor. In an electrophotographic photoconductor which includes a support base body, an intermediate layer and a photoconductor layer and a manufacturing method of such an electrophotographic photoconductor, the intermediate layer contains titanium oxide and a binding resin and a ?L value of the intermediate layer satisfies a following relationship formula (1) or a ?A value of the intermediate layer satisfies a following relationship formula (2), that is, ?5.0??L?0 (1) and ?A?0.Type: ApplicationFiled: September 19, 2006Publication date: April 5, 2007Inventors: Junichiro Otsubo, Jun Azuma, Keiji Maruo, Yoshio Inagaki, Norio Nakai, Kazunari Hamasaki, Shiho Okawa
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Publication number: 20060160005Abstract: The present invention provides a single layer type electrophotographic photoconductor which exhibits the small number of generated black spots in a formed image and exhibits the excellent sensitivity characteristic even when the photoconductor is used for a long time or a photoconductor drum is rotated at a high speed and an image display device which includes the single layer type electrophotographic photoconductor. In the single layer type electrophotographic photoconductor which includes a photoconductive layer containing a binding resin, a hole transporting agent and an charge generating agent, the photoconductor contains a water-repellant polycarbonate resin as the binding resin, and a contact angle of pure water (measured temperature: 25° C.) with respect to the photoconductive layer is set to 100° or more.Type: ApplicationFiled: January 4, 2006Publication date: July 20, 2006Inventors: Daisuke Kuboshima, Kazunari Hamasaki, Norio Nakai
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Publication number: 20060141377Abstract: The present invention provides an electrophotographic photoreceptor comprising a photosensitive layer that contains at least a charge generating agent, a hole transport agent and a predetermined additive. The hole transport agent satisfies the following formulas (A) and (B). The electrophotographic photoreceptor prevents image defect from occurring and can meet the demand for higher speed image forming apparatuses, by reducing the adhesion of paper dust and preventing the occurrence of cracks. ? ? ? M < 1.2 × 10 - 8 ( A ) ? ? ? > 5.Type: ApplicationFiled: December 22, 2005Publication date: June 29, 2006Inventors: Daisuke Kuboshima, Eiichi Miyamoto, Kazunari Hamasaki, Norio Nakai, Yoshio Inagaki, Hideki Okada, Tetsuya Ichiguchi, Keiji Maruo
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Patent number: 5940633Abstract: A lens barrel includes an optical lens having an optical axis, an operation ring substantially cylindrical and operable about the optical axis to move the optical lens along the optical axis thereof, and a slidable contact member slidably in contact with the inner circumferential surface of the operation ring, the slidable contact member providing a specific load against the inner circumferential surface thereof. The operational torque of the operation force is changed when the slidable contact member moves in the optical axis direction by changing its contact area with the inner circumferential surface of the operation ring.Type: GrantFiled: December 10, 1997Date of Patent: August 17, 1999Assignee: Canon Kabushiki KaishaInventors: Haruhisa Yamamoto, Norio Nakai
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Patent number: 5696634Abstract: An objective lens for application to an image apparatus of which the size of the image pickup surface is changeable over between a first mode of a first aspect ratio and a second mode of a second aspect ratio has first optical member for extending the focal length of the objective lens, second optical member for shrinking the focal length of the objective lens, an operating member, and a transmitting mechanism for transmitting the operating force of the operating member to the first optical member under the first mode, and transmitting the operating force to the first and second optical member under the second mode, and by the operation of the operating member, under the first mode, the first optical member is removably insertable into the optical path of the objective lens, and under the second mode, the first and second optical member are removably insertable into the optical path of the objective lens.Type: GrantFiled: December 27, 1995Date of Patent: December 9, 1997Assignee: Canon Kabushiki KaishaInventors: Itaru Watanabe, Yasunori Imaoka, Norio Nakai