Patents by Inventor Kazuteru Kurihara
Kazuteru Kurihara 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: 11300894Abstract: An image formation apparatus according to an embodiment may include: a first image formation unit that forms a first toner image on a first image carrier by using a bright toner containing a bright pigment; a second image formation unit that forms a second toner image on a second image carrier by using a non-bright toner containing no bright pigment; a transfer unit that transfers the first and second toner images to a transfer body; and a controller that controls the transfer unit. The controller is configured to perform control such that a transfer efficiency of the bright toner in a case where the second toner image is superimposed to the first toner image formed on the transfer body is lower than the transfer efficiency of the bright toner in a case where the second toner image is not superimposed to the first toner image formed on the transfer body.Type: GrantFiled: July 15, 2021Date of Patent: April 12, 2022Assignee: Oki Electric Industry Co., Ltd.Inventor: Kazuteru Kurihara
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Publication number: 20220066349Abstract: An image formation apparatus according to an embodiment may include: a first image formation unit that forms a first toner image on a first image carrier by using a bright toner containing a bright pigment; a second image formation unit that forms a second toner image on a second image carrier by using a non-bright toner containing no bright pigment; a transfer unit that transfers the first and second toner images to a transfer body; and a controller that controls the transfer unit. The controller is configured to perform control such that a transfer efficiency of the bright toner in a case where the second toner image is superimposed to the first toner image formed on the transfer body is lower than the transfer efficiency of the bright toner in a case where the second toner image is not superimposed to the first toner image formed on the transfer body.Type: ApplicationFiled: July 15, 2021Publication date: March 3, 2022Applicant: Oki Electric Industry Co., Ltd.Inventor: Kazuteru KURIHARA
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Patent number: 10974503Abstract: A recording apparatus includes a recording head, a carrying part, a carriage and a detector that optically detects an image recorded on a recording medium, and a controller that obtains a correction value of recording positions of dots from a test pattern, and corrects the recording positions of the dots based on the correction value.Type: GrantFiled: January 17, 2020Date of Patent: April 13, 2021Assignee: Oki Data CorporationInventor: Kazuteru Kurihara
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Publication number: 20200269572Abstract: A recording apparatus includes a recording head, a carrying part, a carriage and a detector that optically detects an image recorded on a recording medium, and a controller that obtains a correction value of recording positions of dots from a test pattern, and corrects the recording positions of the dots based on the correction value.Type: ApplicationFiled: January 17, 2020Publication date: August 27, 2020Inventor: Kazuteru KURIHARA
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Publication number: 20190299680Abstract: An inkjet printer includes (a) a carriage movable in a main scanning direction; (b) recording heads mounted on the carriage, (c) a carriage drive processing part having a first drive part to move in main scanning direction; (d) a carry processing part having a second drive part for a recoding medium, (e) a head drive processing part driving the recording heads to form a superimposed pattern image that is composed by superimposing one of the color inks and the transparent ink on the recording medium; (f) an image detection processing part detecting dots of the superimposed pattern image; and (g) a head drive condition setting part setting the drive conditions of the recording heads using the detection result of the dots such that a dot diameter and an inter-dot distance, which are present in the superimposed image section of the superimposed pattern image, are substantially equal to each other wherein the inter-dot distance is determined between centers of two dots adjacent side by side in the main scanning diType: ApplicationFiled: March 13, 2019Publication date: October 3, 2019Inventor: Kazuteru KURIHARA
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Patent number: 10394184Abstract: An image forming apparatus includes an image carrier, a developer carrier disposed so as to face the image carrier, a transfer body disposed so as to face the image carrier, and a contact-separation mechanism. The contact-separation mechanism brings the developer carrier and the image carrier into contact with each other and separates the developer carrier and the image carrier from each other, and brings the image carrier and the transfer body into contact with each other and separates the image carrier and the transfer body from each other.Type: GrantFiled: September 18, 2018Date of Patent: August 27, 2019Assignee: Oki Data CorporationInventors: Kazuteru Kurihara, Atsushi Ohta
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Publication number: 20190094792Abstract: An image forming apparatus includes an image carrier, a developer carrier disposed so as to face the image carrier, a transfer body disposed so as to face the image carrier, and a contact-separation mechanism. The contact-separation mechanism brings the developer carrier and the image carrier into contact with each other and separates the developer carrier and the image carrier from each other, and brings the image carrier and the transfer body into contact with each other and separates the image carrier and the transfer body from each other.Type: ApplicationFiled: September 18, 2018Publication date: March 28, 2019Inventors: Kazuteru KURIHARA, Atsushi OHTA
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Publication number: 20160216642Abstract: Provided is an image forming unit that includes: a container configured to contain therein a developer that includes a toner and a magnetic carrier; a developer supporting member including a first magnetic member, and configured to support the developer; and an image supporting member including a magnetic conductive member and a photosensitive layer, and disposed to face the developer supporting member. The magnetic conductive member includes a magnetic material, and the photosensitive layer covers the magnetic conductive member and is configured to support a latent image on a surface of the photosensitive layer.Type: ApplicationFiled: October 19, 2015Publication date: July 28, 2016Applicant: Oki Data CorporationInventor: Kazuteru KURIHARA
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Patent number: 9195172Abstract: A developing device according to the invention develops latent images formed on an image carrier with a developer including toner carrier and toner. The developing device includes a developer container, a developer conveying member, a supply unit, a discharge unit, and a discharge prohibiting unit. The developer container contains the developer. The developer conveying member conveys the developer contained in the developer container as stirring the developer to circulate the developer in a circulation path in the developer container. The supply unit supplies at least the toner carrier to the circulation path. The discharge unit discharges excessive developer in the circulation path according to supply from the supply unit. The discharge prohibiting unit prohibits discharge of the developer from the discharge unit during a predetermined discharge prohibiting period in a case where the toner carrier is supplied from the supply unit.Type: GrantFiled: March 24, 2015Date of Patent: November 24, 2015Assignee: Oki Data CorporationInventor: Kazuteru Kurihara
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Publication number: 20150277294Abstract: A developing device according to the invention develops latent images formed on an image carrier with a developer including toner carrier and toner. The developing device includes a developer container, a developer conveying member, a supply unit, a discharge unit, and a discharge prohibiting unit. The developer container contains the developer. The developer conveying member conveys the developer contained in the developer container as stirring the developer to circulate the developer in a circulation path in the developer container. The supply unit supplies at least the toner carrier to the circulation path. The discharge unit discharges excessive developer in the circulation path according to supply from the supply unit. The discharge prohibiting unit prohibits discharge of the developer from the discharge unit during a predetermined discharge prohibiting period in a case where the toner carrier is supplied from the supply unit.Type: ApplicationFiled: March 24, 2015Publication date: October 1, 2015Inventor: Kazuteru KURIHARA
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Patent number: 8530125Abstract: An aspect of the invention provides a developer that comprises first charged particles and second charged particles that have smaller charge than the first charged particles, or that are charged opposite to the first charged particles. Here, the first particles are colored, while the second particles may be colorless. Alternatively, the first particles are colored, while the second particles may have approximately the same color as a medium.Type: GrantFiled: April 16, 2009Date of Patent: September 10, 2013Assignee: Oki Data CorporationInventor: Kazuteru Kurihara
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Patent number: 7970335Abstract: A cleaning device includes a blade disposed so as to contact an image bearing body that bears a developer image. The blade scrapes off a developer adhering to the image bearing body. The blade has an edge portion including first and second surfaces, and is configured so that a distance between the first and second surfaces decreases toward a tip of the edge portion. The first and second surfaces form a predetermined edge angle at the tip of the edge portion. An area of the first surface is smaller than an area of the second surface, and the first surface contacts the image bearing body.Type: GrantFiled: February 26, 2009Date of Patent: June 28, 2011Assignee: Oki Data CorporationInventor: Kazuteru Kurihara
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Publication number: 20090325097Abstract: An aspect of the invention provides a developer that comprises first charged particles and second charged particles that have smaller charge than the first charged particles, or that are charged opposite to the first charged particles. Here, the first particles are colored, while the second particles may be colorless. Alternatively, the first particles are colored, while the second particles may have approximately the same color as a medium.Type: ApplicationFiled: April 16, 2009Publication date: December 31, 2009Applicant: Oki Data CorporationInventor: Kazuteru KURIHARA
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Publication number: 20090220286Abstract: A cleaning device includes a blade disposed so as to contact an image bearing body that bears a developer image. The blade scrapes off a developer adhering to the image bearing body. The blade has an edge portion including first and second surfaces, and is configured so that a distance between the first and second surfaces decreases toward a tip of the edge portion. The first and second surfaces form a predetermined edge angle at the tip of the edge portion. An area of the first surface is smaller than an area of the second surface, and the first surface contacts the image bearing body.Type: ApplicationFiled: February 26, 2009Publication date: September 3, 2009Applicant: OKI DATA CORPORATIONInventor: Kazuteru Kurihara