Patents by Inventor Katsuya Shimatsu
Katsuya Shimatsu 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: 7610009Abstract: An image recording apparatus includes: a transfer roller that transfers an image formed on a photoconductor drum onto continuous paper pressed against the photoconductor drum; and guide rollers that regulate the position of the continuous paper with respect to the photoconductor drum.Type: GrantFiled: July 12, 2006Date of Patent: October 27, 2009Assignee: Fuji Xerox Co., Ltd.Inventor: Katsuya Shimatsu
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Publication number: 20080181685Abstract: A fixing device comprising a fixing unit comprising a heat source for fixing a toner image on a sheet in a state of being out of contact with the sheet, and a contact prevention unit preventing contact of the fixing unit and the sheet.Type: ApplicationFiled: January 23, 2008Publication date: July 31, 2008Applicant: Fuji Xerox Co., Ltd.Inventor: Katsuya Shimatsu
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Publication number: 20060275059Abstract: An image recording apparatus includes: a transfer roller that transfers an image formed on a photoconductor drum onto continuous paper pressed against the photoconductor drum; and guide rollers that regulate the position of the continuous paper with respect to the photoconductor drum.Type: ApplicationFiled: July 12, 2006Publication date: December 7, 2006Inventor: Katsuya Shimatsu
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Publication number: 20060067728Abstract: An image recording device transfers an image, which is formed on a photoconductor, onto a continuous sheet which is pressed against the photoconductor by a transfer roller. Cleaning of the transfer roller is carried out by applying a bias voltage to the transfer roller to return toner on the transfer roller toward the photoconductor. The cleaning is carried out when the transfer roller is in contact with a non-printing region of a reverse surface of the continuous sheet.Type: ApplicationFiled: February 23, 2005Publication date: March 30, 2006Applicant: Fuji Xerox Co., Ltd.Inventors: Katsuya Shimatsu, Masatoshi Kimura
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Patent number: 6606945Abstract: Disclosed herein is a continuous medium printing apparatus for performing printing on both sides of a continuous medium. The continuous medium printing apparatus comprises: a conveyance system; a printing section; a feed-force adjustment section disposed on a downstream side of the conveying path from the printing section; and a feed-force control section. The conveyance system has a pair of conveyor rollers disposed on a downstream side of the conveying path from the printing section so that they are opposite to each other with the continuous medium therebetween, feed force being applied to the continuous medium by rotating the pair of conveyor rollers with said continuous medium clamped therebetween. The feed-force adjustment section varies said feed force by adjusting pressure of said pair of conveyor rollers with respect to the continuous medium.Type: GrantFiled: December 29, 1999Date of Patent: August 19, 2003Assignee: Fuji Xerox Co., Ltd.Inventors: Katsuya Shimatsu, Yasuharu Takeuchi, Kiyoshi Chinzei
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Patent number: 6292649Abstract: The invention provides a continuous medium printing apparatus which can exert a transporting force to act upon a continuous medium without additional provision of a new tractor mechanism or some other transport mechanism. In the continuous medium printing apparatus, upon automatic loading of a continuous medium, a control section controls a charging operation of a charging section so that a leading end portion of the continuous medium may be electrostatically attracted to an image forming drum. The image forming drum to which the continuous medium is attracted is rotated in a printing transporting direction to exert a transporting force to act upon the continuous medium to transport the continuous medium in the printing transporting direction. The present invention is applicable to an apparatus which prints on a continuous medium such as continuous recording paper (continuous paper), for example, by electrophotography.Type: GrantFiled: September 11, 2000Date of Patent: September 18, 2001Assignee: Fujitsu LimitedInventors: Toshimasa Toyama, Kiyoshi Chinzei, Yasuharu Takeuchi, Katsuya Shimatsu, Makoto Maki, Naoto Hirao
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Patent number: 6229978Abstract: The invention provides a developing apparatus which prevents transportation of aggregated toner powder to an image carrier and thereby assures a high print quality by taking a countermeasure to disperse aggregated toner powder when development of an image carrier with developer which includes toner powder and magnetic powder is performed. The developing apparatus includes a developing roller, a developer control member, and an aggregated toner dispersion member disposed in an opposing relationship to the transport magnetic pole of the fixed magnet on the upstream side with respect to the position of the developer control member and having a contact face in the form of a flat face with which the developer held on the outer circumferential face of the developing roller may be contacted under pressure in order to disperse aggregated toner powder in the developer held on the outer circumferential face of the developing roller.Type: GrantFiled: October 19, 1999Date of Patent: May 8, 2001Assignee: Fujitsu LimitedInventors: Hiroaki Naito, Shinichi Yaoi, Katsuya Shimatsu, Jun Shimizu
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Patent number: 6212340Abstract: A developing apparatus develops a latent image formed on a latent image carrying body with a developer. The developing apparatus includes a developing unit having a means for supplying the developer to the latent image carrying body to develop the latent image on the latent image carrying body and a developer housing for accommodating the developer. A developer storage box stores the developer which is to be supplied to the developing unit. The developer storage box is detachably mounted on the developing unit and has a volume substantially the same as a volume of the developer which can be accommodated in the developer case of the developing unit. The developer in developer storage box is supplied to the developing unit.Type: GrantFiled: June 9, 1999Date of Patent: April 3, 2001Assignee: Fujitsu LimitedInventors: Katsumi Sugimoto, Kenji Fuke, Keiko Tonai, Hiroaki Yoshida, Yoshihiro Tonomoto, Eiji Suzuki, Tomoaki Tanaka, Katsuya Shimatsu, Yasuhiro Wakabayashi
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Patent number: 6175715Abstract: The invention provides a double-sided printing apparatus which includes a first image forming process unit, a second image forming process unit, a first fixing station, a second fixing station and a transport system all disposed in a first housing. The transport system includes a transport direction changing element which contacts with one of surfaces of a medium to change the transporting direction of the medium so that the medium is sent out to the second fixing station. While the medium is transported in a substantially vertical direction in the single double-sided printing apparatus, the height of the transport path of the medium is suppressed so as not to become very high, thereby miniaturizing the apparatus.Type: GrantFiled: June 28, 1999Date of Patent: January 16, 2001Assignee: Fujitsu LimitedInventors: Naoto Hirao, Kenji Fuke, Masaaki Ohyama, Katsuya Shimatsu
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Patent number: 6175716Abstract: The invention provides a continuous medium printing apparatus which can exert a transporting force to act upon a continuous medium without additional provision of a new tractor mechanism or some other transport mechanism. In the continuous medium printing apparatus, upon automatic loading of a continuous medium, a control section controls a charging operation of a charging section so that a leading end portion of the continuous medium may be electrostatically attracted to an image forming drum. The image forming drum to which the continuous medium is attracted is rotated in a printing transporting direction to exert a transporting force to act upon the continuous medium to transport the continuous medium in the printing transporting direction. The present invention is applicable to an apparatus which prints on a continuous medium such as continuous recording paper (continuous paper), for example, by electrophotography.Type: GrantFiled: January 28, 2000Date of Patent: January 16, 2001Assignee: Fujitsu LimitedInventors: Toshimasa Toyama, Kiyoshi Chinzei, Yasuharu Takeuchi, Katsuya Shimatsu, Makoto Maki, Naoto Hirao
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Patent number: 6091925Abstract: A fixing unit is provided with a fixing heat roller, a first reel supplying a cleaning member which cleans a surface of the fixing heat roller, a second reel taking up the cleaning member from the first reel, and a unidirectional clutch mechanism intermittently driving the second reel in a direction to take up the cleaning member using rotation of the fixing heat roller.Type: GrantFiled: July 1, 1997Date of Patent: July 18, 2000Assignee: Fujitsu LimitedInventors: Katsumi Sugimoto, Tomoaki Tanaka, Katsuya Shimatsu, Yasuhiro Wakabayashi, Katsumi Tateno, Shigenobu Utaka, Kenji Fuke
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Patent number: 5933690Abstract: An image forming apparatus including a plurality of developing units each having a developer storage portion for accommodating a developer; a plurality of feeding devices for discharging used developers from the respective developing units; and a single collecting device for collecting the used developers discharged by the respective feeding device.Type: GrantFiled: September 11, 1996Date of Patent: August 3, 1999Assignee: Fujitsu LimitedInventors: Katsumi Sugimoto, Kenji Fuke, Keiko Tonai, Hiroaki Yoshida, Yoshihiro Tonomoto, Eiji Suzuki, Tomoaki Tanaka, Katsuya Shimatsu, Yasuhiro Wakabayashi
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Patent number: 5907758Abstract: An electrostatic recording system using a dielectric belt for conducting electrification of a sheet of paper and a transfer belt so that the sheet of paper is not wound and caught by a photoconductor drum, and a transfer voltage can be lowered so as to smoothly separate the sheet of paper from a transfer belt. The electrostatic recording system applies a voltage to only the dielectric belt at a stage before the sheet of paper 3 is attracted to the dielectric belt 10 and applies voltage to the sheet of paper 3 conveyed to the dielectric belt, and to the dielectric belt 10 while the sheet of paper and the belt are mutually superposed.Type: GrantFiled: July 14, 1997Date of Patent: May 25, 1999Assignee: Fujitsu LimitedInventors: Tomoaki Tanaka, Tsuneo Mizuno, Kazumi Kawabata, Hitoshi Yoshii, Teturou Nakashima, Yoshimi Takizawa, Kenji Fuke, Eiji Suzuki, Katsumi Sugimoto, Katsuya Shimatsu, Yasuhiro Wakabayashi
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Patent number: 5617192Abstract: A plurality of electrostatic recording units (Y, C, M and B) are arranged in series along a recording medium moving path. Each electrostatic recording unit includes an electrostatic latent image carrier (48), a developing unit (54, 54') arranged on the upstream side of the electrostatic latent image carrier, and a cleaning unit (60) arranged on the downstream side. The developing unit includes a developer holding container (66) having a developer storage portion (70) and a developer agitating portion (76) located above the developer storage portion. The developer agitating portion is communicated with the developer storage portion via a communicating path (82). The cleaning unit (60) of one of the adjacent electrostatic recording units is disposed adjacent to the developer storage portion (70) of the developer holding container (66) composing a portion of the developing unit (54, 54') of the other electrostatic recording unit.Type: GrantFiled: November 16, 1995Date of Patent: April 1, 1997Assignee: Fujitsu LimitedInventors: Yoshihiro Tonomoto, Kenji Fuke, Katsumi Sugimoto, Eiji Suzuki, Keiko Tonai, Shozo Tonai, Hitoshi Yoshii, Tsutomu Kawai, Kunihiko Sato, Katsuya Shimatsu