Patents by Inventor Eichi Koizumi
Eichi Koizumi 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: 20240199147Abstract: A crawler type traveling body includes a drive wheel, an in-wheel motor incorporated in the drive wheel, a plurality of rotating wheels disposed below the drive wheel, a crawler, and a tensioner. The crawler is wound around the drive wheel and the rotating wheels and configured to be rotated by the drive wheel. The tensioner is coupled to a drive shaft of the in-wheel motor and configured to press the drive wheel against the crawler and apply tension to the crawler.Type: ApplicationFiled: January 23, 2024Publication date: June 20, 2024Applicant: Ricoh Company, Ltd.Inventors: Eichi KOIZUMI, Hiroshi SHIMURA, Ryota YAMASHINA, Taku KITAHARA, Hiroshi OKAMOTO
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Patent number: 11964710Abstract: A crawler type traveling body includes a drive wheel, an in-wheel motor incorporated in the drive wheel, a plurality of rotating wheels disposed below the drive wheel, a crawler, and a tensioner. The crawler is wound around the drive wheel and the rotating wheels and configured to be rotated by the drive wheel. The tensioner is coupled to a drive shaft of the in-wheel motor and configured to press the drive wheel against the crawler and apply tension to the crawler.Type: GrantFiled: January 25, 2021Date of Patent: April 23, 2024Assignee: Ricoh Company, Ltd.Inventors: Eichi Koizumi, Hiroshi Shimura, Ryota Yamashina, Taku Kitahara, Hiroshi Okamoto
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Publication number: 20230373577Abstract: A crawler-type traveling body includes: a crawler; a drive wheel including a drive shaft, the drive wheel configured to apply a driving force to the crawler; at least two track rollers disposed below the drive wheel, the crawler being stretched around the drive wheel and said at least two track rollers; and an auxiliary mechanism between said at least two track rollers, the auxiliary mechanism includes two auxiliary wheels swingably provided, wherein a push-up amount of one of the two auxiliary wheels pushed up in a vertical direction is larger than a push-down amount of another of the two auxiliary wheels pushed down in the vertical direction.Type: ApplicationFiled: September 27, 2021Publication date: November 23, 2023Inventors: Hiroshi SHIMURA, Eichi KOIZUMI, Taku KITAHARA, Hiroshi OKAMOTO
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Publication number: 20230088453Abstract: A crawler traveling body includes: a wheel around which a crawler belt is wound; a disc; a disc connector configured to connect the wheel and the disc, and rotate the wheel and the disc together; a brake caliper configured to sandwich the disc with a brake pad; and a motor configured to open or close the brake pad according to a control signal for controlling a degree of opening or closing of the brake pad.Type: ApplicationFiled: September 19, 2022Publication date: March 23, 2023Inventors: Hiroshi SHIMURA, Taku KITAHARA, Hiroshi OKAMOTO, Eichi KOIZUMI
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Publication number: 20210229760Abstract: A crawler type traveling body includes a drive wheel, an in-wheel motor incorporated in the drive wheel, a plurality of rotating wheels disposed below the drive wheel, a crawler, and a tensioner. The crawler is wound around the drive wheel and the rotating wheels and configured to be rotated by the drive wheel. The tensioner is coupled to a drive shaft of the in-wheel motor and configured to press the drive wheel against the crawler and apply tension to the crawler.Type: ApplicationFiled: January 25, 2021Publication date: July 29, 2021Applicant: Ricoh Company, Ltd.Inventors: Eichi KOIZUMI, Hiroshi SHIMURA, Ryota YAMASHINA, Taku KITAHARA, Hiroshi OKAMOTO
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Patent number: 10638039Abstract: An apparatus for controlling image capturing, includes circuitry to control image capturing operation of each one of a first image capturing device and a second image capturing device, so as to cause the first image capturing device and the second image capturing device to cooperate with each other to perform linked image capturing, the first image capturing device capable of capturing an image with an angle of view wider than that of the second image capturing device. The circuitry controls one of the first image capturing device and the second image capturing device to start image capturing in response to starting of image capturing by other one of the first image capturing device and the second image capturing device.Type: GrantFiled: December 28, 2017Date of Patent: April 28, 2020Assignee: RICOH COMPANY, LTD.Inventors: Kazuhiro Yoshida, Takahiro Asai, Keiichi Kawaguchi, Hiroshi Suitoh, Eichi Koizumi, Tomohiro Ikeda, Yoshiyuki Toda
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Publication number: 20190124274Abstract: An image processing apparatus for processing a plurality of images captured by an image capturing device, the image capturing device including a plurality of imaging elements each of which captures an imaging area with a preset angle of view, imaging areas of at least two of the plurality of imaging elements overlapping with each other, includes circuitry to: obtain the plurality of images captured by the image capturing device; convert at least one image of the plurality of images, to an image having an angle of view that is smaller than the preset angle of view; and combine the plurality of images including the at least one image that is converted, into a combined image.Type: ApplicationFiled: October 22, 2018Publication date: April 25, 2019Inventors: Takuroh NAITOH, Takahiro ASAI, Keiichi KAWAGUCHI, Eichi KOIZUMI
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Publication number: 20180184001Abstract: An apparatus for controlling image capturing, includes circuitry to control image capturing operation of each one of a first image capturing device and a second image capturing device, so as to cause the first image capturing device and the second image capturing device to cooperate with each other to perform linked image capturing, the first image capturing device capable of capturing an image with an angle of view wider than that of the second image capturing device. The circuitry controls one of the first image capturing device and the second image capturing device to start image capturing in response to starting of image capturing by other one of the first image capturing device and the second image capturing device.Type: ApplicationFiled: December 28, 2017Publication date: June 28, 2018Inventors: Kazuhiro Yoshida, Takahiro Asai, Keiichi Kawaguchi, Hiroshi Suitoh, Eichi Koizumi, Tomohiro Ikeda, Yoshiyuki Toda
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Patent number: 9588260Abstract: A microlens substrate includes a light receiving section that includes a light receiving surface configured to receive light, a supporting member that fixes the light receiving section, a microlens array that includes a plurality of microlenses configured to guide the light to the light receiving section, a lens holding member that holds the microlens array, and a fixing member that fixes the supporting member and the lens holding member. The fixing member includes a first fixing part that fixes the lens holding member and a second fixing member that fixes the supporting member. The lens holding member includes a lens holding part that holds the microlens array. The lens holding part is disposed at a position between the first fixing part and the second fixing part in a direction orthogonal to the light receiving surface.Type: GrantFiled: March 16, 2016Date of Patent: March 7, 2017Assignee: RICOH COMPANY, LTD.Inventor: Eichi Koizumi
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Publication number: 20160274277Abstract: A microlens substrate includes a light receiving section that includes a light receiving surface configured to receive light, a supporting member that fixes the light receiving section, a lens array that includes a plurality of lenses configured to guide the light to the light receiving section, a lens holding member that holds the lens array, and a fixing member that fixes the supporting member and the lens holding member. The fixing member includes a first fixing part that fixes the lens holding member and a second fixing member that fixes the supporting member. The lens holding member includes a lens holding part that holds the lens array. The lens holding part is disposed at a position between the first fixing part and the second fixing part in a direction orthogonal to the light receiving surface.Type: ApplicationFiled: March 16, 2016Publication date: September 22, 2016Inventor: Eichi KOIZUMI
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Patent number: 8879963Abstract: A toner supplying device including a secondary toner container, a first feeding member performing a first feeding operation of feeding toner from a toner container to the secondary container on demand, a second feeding member performing a second feeding operation of feeding the toner from the secondary container to a developing device on demand, and a toner supply controller controlling the amount of the toner in the secondary container to be greater than a predetermined amount. The controller performs first control in which when the first feeding operation is performed, the amount of the toner fed in the second feeding operation per unit of time is decreased, or second control in which when the amount of the toner fed in the second feeding operation is greater than a predetermined amount, the amount of the toner fed in the first feeding operation per unit of time is decreased.Type: GrantFiled: October 19, 2010Date of Patent: November 4, 2014Assignee: Ricoh Company, LimitedInventors: Yushi Hirayama, Eichi Koizumi, Hitoshi Ishibashi, Tetsuya Muto
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Patent number: 8615174Abstract: An image forming apparatus includes a latent image carrier; an image information obtaining unit; a latent image forming unit; a developer carrier; a developing device to develop the latent image by adhering toner onto the latent image carried on a latent image carrier; a toner replenishing device to replenish toner to the developing device; and a controller to adjust a toner replenishment amount by controlling drive of the toner replenishing device based on the image information. When the drive of the developing device is stopped, information relating to unreplenished portion of the toner replenishment amount excluding the already replenished amount from the toner replenishment amount based on the image information is stored in a nonvolatile memory, and the drive of the toner replenishing device is controlled using the stored information relating to the unreplenished portion of the toner replenishment amount when the drive of the developing device is resumed.Type: GrantFiled: July 27, 2011Date of Patent: December 24, 2013Assignee: Ricoh Company, Ltd.Inventors: Eichi Koizumi, Makoto Komatsu
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Patent number: 8311423Abstract: An image forming apparatus that includes a latent image carrier, a latent image forming unit, a developing unit, a toner supplier, a toner concentration detector, a prediction calculator, and a toner supply controller. The toner supplier includes a single driving source and supplies toner to a two-component developer at a predetermined supply position by driving a toner supply member with the driving source. The toner concentration detector detects a toner concentration in the developer at a predetermined detection position located upstream of the supply position. The prediction calculator predicts changes in the toner concentration in the developer over time at a prediction position located at the supply position or downstream of the supply position and upstream of a developer feed position to the developer carrier when toner is not supplied. The toner supply controller adjusts an amount of the toner supplied based on the prediction.Type: GrantFiled: February 9, 2012Date of Patent: November 13, 2012Assignee: Ricoh Company, LimitedInventors: Eichi Koizumi, Shinji Kato
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Patent number: 8254795Abstract: A supply control unit is configured to, in a successive image-forming operation, perform a process of successively generating a driving control pattern for a toner supply device based on image information of each page, and synthesizing an unused portion of the driving control pattern which is obtained by eliminating a portion of the driving control pattern already reflected on a driving control of the toner supply device from the driving control pattern generated based on image information of a previous page with a driving control pattern generated based on a subsequent page.Type: GrantFiled: October 1, 2009Date of Patent: August 28, 2012Assignee: Ricoh Company, LimitedInventors: Eichi Koizumi, Nobutaka Takeuchi, Akira Yoshida, Shinji Kato
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Patent number: 8238768Abstract: A first developer container having a toner supplying opening is provided in a developing unit. A toner concentration sensor is arranged downstream of the toner supplying opening to detect toner concentration in developer. A supply controlling unit is provided to determine an excess or a shortage in the amount of supplied toner based on image information correspondingly to a detection result by the toner concentration sensor, and to correct the driving amount of a toner supplying unit that has been determined based on the image information correspondingly to the recognized excess or shortage in the amount of supplied toner.Type: GrantFiled: October 1, 2009Date of Patent: August 7, 2012Assignee: Ricoh Company, LimitedInventors: Eichi Koizumi, Nobutaka Takeuchi, Akira Yoshida, Shinji Kato
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Publication number: 20120163845Abstract: An image forming apparatus that includes a latent image carrier, a latent image forming unit, a developing unit, a toner supplier, a toner concentration detector, a prediction calculator, and a toner supply controller. The toner supplier includes a single driving source and supplies toner to a two-component developer at a predetermined supply position by driving a toner supply member with the driving source. The toner concentration detector detects a toner concentration in the developer at a predetermined detection position located upstream of the supply position. The prediction calculator predicts changes in the toner concentration in the developer over time at a prediction position located at the supply position or downstream of the supply position and upstream of a developer feed position to the developer carrier when toner is not supplied. The toner supply controller adjusts an amount of the toner supplied based on the prediction.Type: ApplicationFiled: February 9, 2012Publication date: June 28, 2012Inventors: Eichi KOIZUMI, Shinji Kato
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Patent number: 8139962Abstract: An image forming apparatus includes a latent image carrier, a latent image forming unit, a developing unit, a toner supplier, a toner concentration detector, a prediction calculator, and a toner supply controller. The toner supplier includes a single driving source and supplies toner to a two-component developer at a predetermined supply position by driving a toner supply member with the driving source. The toner concentration detector detects a toner concentration in the developer at a predetermined detection position located upstream of the supply position. The prediction calculator predicts changes in the toner concentration in the developer over time at a prediction position located at the supply position or downstream of the supply position and upstream of a developer feed position to the developer carrier when toner is not supplied, based on a result of the toner concentration detection. The toner supply controller adjusts an amount of the toner supplied based on the prediction.Type: GrantFiled: April 30, 2008Date of Patent: March 20, 2012Assignee: Ricoh Company LimitedInventors: Eichi Koizumi, Shinji Kato
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Publication number: 20120027434Abstract: An image forming apparatus includes a latent image carrier; an image information obtaining unit; a latent image forming unit; a developer carrier; a developing device to develop the latent image by adhering toner onto the latent image carried on a latent image carrier; a toner replenishing device to replenish toner to the developing device; and a controller to adjust a toner replenishment amount by controlling drive of the toner replenishing device based on the image information. When the drive of the developing device is stopped, information relating to unreplenished portion of the toner replenishment amount excluding the already replenished amount from the toner replenishment amount based on the image information is stored in a nonvolatile memory, and the drive of the toner replenishing device is controlled using the stored information relating to the unreplenished portion of the toner replenishment amount when the drive of the developing device is resumed.Type: ApplicationFiled: July 27, 2011Publication date: February 2, 2012Inventors: Eichi KOIZUMI, Makoto KOMATSU
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Publication number: 20110110689Abstract: A toner supplying device including a secondary toner container, a first feeding member performing a first feeding operation of feeding toner from a toner container to the secondary container on demand, a second feeding member performing a second feeding operation of feeding the toner from the secondary container to a developing device on demand, and a toner supply controller controlling the amount of the toner in the secondary container to be greater than a predetermined amount. The controller performs first control in which when the first feeding operation is performed, the amount of the toner fed in the second feeding operation per unit of time is decreased, or second control in which when the amount of the toner fed in the second feeding operation is greater than a predetermined amount, the amount of the toner fed in the first feeding operation per unit of time is decreased.Type: ApplicationFiled: October 19, 2010Publication date: May 12, 2011Inventors: Yushi HIRAYAMA, Eichi Koizumi, Hitoshi Ishibashi, Tetsuya Muto
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Publication number: 20100086320Abstract: A first developer container having a toner supplying opening is provided in a developing unit. A toner concentration sensor is arranged downstream of the toner supplying opening to detect toner concentration in developer. A supply controlling unit is provided to determine an excess or a shortage in the amount of supplied toner based on image information correspondingly to a detection result by the toner concentration sensor, and to correct the driving amount of a toner supplying unit that has been determined based on the image information correspondingly to the recognized excess or shortage in the amount of supplied toner.Type: ApplicationFiled: October 1, 2009Publication date: April 8, 2010Inventors: Eichi KOIZUMI, Nobutaka Takeuchi, Akira Yoshida, Shinji Kato