Patents by Inventor Hideaki Kanaya
Hideaki Kanaya 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: 9977361Abstract: An image forming apparatus includes an image bearer, a charging, a charge power supply to supply a charging bias to the charging device, a developing device, a toner adhesion amount detector, an environment detector, and a controller to determine whether to execute a charging bias adjustment process in which the charging device charges the image bearer to have different potentials, the developing device supplies the toner to the image bearer according to the different potentials, the toner adhesion amount detector detects the amount of toner adhering to the image bearer, and the controller adjusts the charging. The controller includes a memory device to store the environment data, and is configured to compare the environment data with previous environment data stored in the memory device, and determine not to execute the charging bias adjustment process when an environment change amount is not greater than a threshold.Type: GrantFiled: November 17, 2016Date of Patent: May 22, 2018Assignee: Ricoh Company, Ltd.Inventors: Hideaki Kanaya, Taichi Urayama, Ryusuke Mase, Hiroki Ishii, Hiroyuki Sugiyama, Saki Izumi, Yuushi Hirayama
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Publication number: 20170153564Abstract: An image forming apparatus includes an image bearer, a charging, a charge power supply to supply a charging bias to the charging device, a developing device, a toner adhesion amount detector, an environment detector, and a controller to determine whether to execute a charging bias adjustment process in which the charging device charges the image bearer to have different potentials, the developing device supplies the toner to the image bearer according to the different potentials, the toner adhesion amount detector detects the amount of toner adhering to the image bearer, and the controller adjusts the charging. The controller includes a memory device to store the environment data, and is configured to compare the environment data with previous environment data stored in the memory device, and determine not to execute the charging bias adjustment process when an environment change amount is not greater than a threshold.Type: ApplicationFiled: November 17, 2016Publication date: June 1, 2017Inventors: Hideaki KANAYA, Taichi URAYAMA, Ryusuke MASE, Hiroki ISHll, Hiroyuki SUGIYAMA, Saki IZUMI, Yuushi HIRAYAMA
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Publication number: 20150234316Abstract: An image forming apparatus includes an image bearer, a charger, an exposure device, a developing device, an image density sensor, and a controller. The controller is configured to charge the image bearer, expose the image bearer with a first exposure that saturates potential of the image bearer after exposure to form a latent image pattern on the image bearer, develop the latent image pattern into a toner pattern while changing a developing electrical field, detect a first image density of the toner pattern, determine developing bias and charging bias, form patterns with the first exposure and a second exposure smaller than the first exposure, detect a second image density of the patterns, and determine an exposure to output an image based on the second image density, the first exposure, and the second exposure.Type: ApplicationFiled: February 3, 2015Publication date: August 20, 2015Inventors: Hideaki Kanaya, Jun Yura, Takeshi Uchitani, Shunichi Hashimoto, Yushi Hirayama, Takuya Suganuma, Hiroki Ishii, Hironobu Takeshita, Shogo Kezuka
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Patent number: 8818255Abstract: An image forming apparatus including a fixing liquid applicator to apply a fixing liquid to a recording medium, a transfer device to transfer a toner image from a toner image bearing member onto the recording medium to which the fixing liquid is applied while the toner image is in contact with the fixing liquid, and a fixing device to fix the toner image on the recording medium by heating the toner image and the fixing liquid. The fixing liquid comprises a plasticizer having a function to swell and soften a toner.Type: GrantFiled: March 14, 2011Date of Patent: August 26, 2014Assignee: Ricoh Company, Ltd.Inventors: Ryuji Yoshida, Nobuyuki Koinuma, Tomoko Takahashi, Mugijirou Uno, Mikio Ishibashi, Hideki Zemba, Yoshinori Nakagawa, Shunichi Hashimoto, Naoyuki Ozaki, Hideaki Kanaya
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Patent number: 8774694Abstract: An image forming apparatus includes a fixing liquid applicator to apply a fixing liquid to a recording medium before a toner image is transferred on the recording medium, a transfer device to transfer a toner image from a toner image bearing member onto the recording medium applied with the fixing liquid, and a fixing device to fix the toner image on the recording medium by heating. The fixing liquid applicator includes an application member disposed opposing a face of the recording medium on which the toner image is transferred to apply to the recording medium the fixing liquid borne on a surface of the application member, a supply unit to supply the fixing liquid to the application member, and a sealing device to form along with the application member a sealed space in which the supply unit and the fixing liquid to be supplied to the application member are sealed.Type: GrantFiled: July 7, 2011Date of Patent: July 8, 2014Assignee: Ricoh Company, Ltd.Inventors: Ryuji Yoshida, Nobuyuki Koinuma, Tomoko Takahashi, Hideaki Kanaya, Shunichi Hashimoto, Naoyuki Ozaki, Yoshinori Nakagawa, Mugijirou Uno, Hideki Zemba, Mikio Ishibashi
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Patent number: 8761651Abstract: An image forming apparatus, including a fixing liquid applicator applying a fixing liquid including a plasticizer swelling and softening a toner forming a toner image to fix on a recording medium thereto before bearing the toner image; a transferer transferring the toner image on a toner image bearer onto the recording medium while contacting the toner image to the fixing liquid thereon; and a fixing device heating the toner image and the fixing liquid to fix the toner image thereon, wherein the fixing liquid applicator comprises an application member bearing the fixing liquid on its surface and apply the liquid on a surface of the recording medium the toner image is transferred onto; a feeder feeding the fixing liquid to the application member; and an inducement mechanism inducing the fixing liquid pooling at a delivery point where the feeder feeds the fixing liquid to the application member out of the point.Type: GrantFiled: July 15, 2011Date of Patent: June 24, 2014Assignee: Ricoh Company, Ltd.Inventors: Ryuji Yoshida, Nobuyuki Koinuma, Mugijirou Uno, Tomoko Takahashi, Mikio Ishibashi, Hideki Zemba, Yoshinori Nakagawa, Shunichi Hashimoto, Naoyuki Ozaki, Hideaki Kanaya
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Publication number: 20120045262Abstract: An image forming apparatus, including a fixing liquid applicator applying a fixing liquid including a plasticizer swelling and softening a toner forming a toner image to fix on a recording medium thereto before bearing the toner image; a transferer transferring the toner image on a toner image bearer onto the recording medium while contacting the toner image to the fixing liquid thereon; and a fixing device heating the toner image and the fixing liquid to fix the toner image thereon, wherein the fixing liquid applicator comprises an application member bearing the fixing liquid on its surface and apply the liquid on a surface of the recording medium the toner image is transferred onto; a feeder feeding the fixing liquid to the application member; and an inducement mechanism inducing the fixing liquid pooling at a delivery point where the feeder feeds the fixing liquid to the application member out of the point.Type: ApplicationFiled: July 15, 2011Publication date: February 23, 2012Applicant: Ricoh Company, Ltd.Inventors: Ryuji Yoshida, Nobuyuki Koinuma, Mugijirou Uno, Tomoko Takahashi, Mikio Ishibashi, Hideki Zemba, Yoshinori Nakagawa, Shunichi Hashimoto, Naoyuki Ozaki, Hideaki Kanaya
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Publication number: 20120020706Abstract: An image forming apparatus includes a fixing liquid applicator to apply a fixing liquid to a recording medium before a toner image is transferred on the recording medium, a transfer device to transfer a toner image from a toner image bearing member onto the recording medium applied with the fixing liquid, and a fixing device to fixe the toner image on the recording medium by heating. The fixing liquid applicator includes an application member disposed opposing a face of the recording medium on which the toner image is transferred to apply to the recording medium the fixing liquid borne on a surface of the application member, a supply unit to supply the fixing liquid to the application member, and a sealing device to form along with the application member a sealed space in which the supply unit and the fixing liquid to be supplied to the application member are sealed.Type: ApplicationFiled: July 7, 2011Publication date: January 26, 2012Applicant: Ricoh Company, Ltd.Inventors: Ryuji YOSHIDA, Nobuyuki Koinuma, Tomoko Takahashi, Hideaki Kanaya, Shunichi Hashimoto, Naoyuki Ozaki, Yoshinori Nakagawa, Mugijirou Uno, Hideki Zemba, Mikio Ishibashi
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Publication number: 20110229179Abstract: An image forming apparatus including a fixing liquid applicator to apply a fixing liquid to a recording medium, a transfer device to transfer a toner image from a toner image bearing member onto the recording medium to which the fixing liquid is applied while the toner image is in contact with the fixing liquid, and a fixing device to fix the toner image on the recording medium by heating the toner image and the fixing liquid. The fixing liquid comprises a plasticizer having a function to swell and soften a toner.Type: ApplicationFiled: March 14, 2011Publication date: September 22, 2011Inventors: Ryuji YOSHIDA, Nobuyuki Koinuma, Tomoko Takahashi, Mugijirou Uno, Mikio Ishibashi, Hideki Zemba, Yoshinori Nakagawa, Shunichi Hashimoto, Naoyuki Ozaki, Hideaki Kanaya