Patents by Inventor Takamitsu Ikematsu
Takamitsu Ikematsu 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: 9085426Abstract: A feeding device includes a paper feed tray, a detector on an image forming apparatus main body, a control member rotatably supported by the paper feed tray, and spacers. The detector includes movable pieces and contact points corresponding to the movable piece, and switches each contact point by the position of the corresponding movable piece. The control member includes a control surface formed on its outer circumferential surface with projecting and recessed portions. The projecting and recessed portions are disposed in a pattern corresponding to rotation angles in an area of the control surface facing the movable pieces. Controlling the positions of the movable pieces according to the pattern encodes paper size. Each movable piece is lined in the circumferential direction facing the control surface. The outer circumferential surface of the projecting portions is formed in a cylindrical surface shape centering around the rotational axis of the control member.Type: GrantFiled: September 12, 2013Date of Patent: July 21, 2015Assignee: RICOH COMPANY, LTD.Inventors: Ikuo Fujii, Toshio Matsuyama, Ippei Kimura, Mizuna Tanaka, Hirofumi Horita, Takamitsu Ikematsu, Kaoru Tada
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Patent number: 8827259Abstract: An image forming apparatus includes an image forming unit to form an image on a sheet-shaped recording medium; a registration roller pair to convey the recording medium to the image forming unit; a sheet feed roller to convey the recording medium to the registration roller pair; and a controller to control driving of the registration roller pair and the sheet feed roller. In such an image forming apparatus, the controller starts driving of the sheet feed roller to feed the recording medium and stops driving of the sheet feed roller before the sheet feed roller has completed conveyance of the recording medium for a distance equal to a length of the settable minimum-sized recording medium in the conveyance direction.Type: GrantFiled: August 10, 2012Date of Patent: September 9, 2014Assignee: Ricoh Company, Ltd.Inventors: Ikuo Fujii, Takamitsu Ikematsu, Ippei Kimura, Kaoru Tada
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Patent number: 8798517Abstract: A sheet supplying device that is incorporatable in an image forming apparatus includes a recording media container, a sheet feeding unit to feed a recording medium from the recording media container, and a frame to support the recording media container and the sheet feeding unit. The recording media container is detachably attachable to the frame in a first operation in which the recording media container is moved in a sheet conveyance direction in which the recording medium is conveyed upstream or downstream by the sheet feeding unit, and the recording media container is separated from the frame and the sheet feeding unit with the sheet feeding unit remaining in the frame, and a second operation in which the recording media container is moved in a direction perpendicular to the sheet conveyance direction, and the recording media container is separated from the frame together with the sheet feeding unit.Type: GrantFiled: September 7, 2011Date of Patent: August 5, 2014Assignee: Ricoh Company, Ltd.Inventors: Yasuo Matsuyama, Ippei Kimura, Ikuo Fujii, Takamitsu Ikematsu, Masafumi Takahira, Kaoru Tada, Tomoyoshi Yamazaki, Toru Hanashima, Chikara Hiraoka, Tamotsu Ikeda, Kazuyoshi Kondo
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Patent number: 8770576Abstract: A sheet feed unit includes a medium container configured to contain sheet-like recording media; a bottom plate disposed in the medium container and configured to accommodate the recording media thereon; a sheet feed device configured to feed out the recording media contained in the medium container; a main body of the sheet feed unit, which the medium container can be inserted into and pulled out from, including the sheet feed device; and a displaying member configured to display a remaining level of the recording media in the medium container, the displaying member including a first display oriented in a first direction and a second display oriented in a second direction perpendicular to the first direction. The sheet feed unit improves a freeness in the observable range of the displaying member and the remaining level of the recording media in the medium container can be more accurately ascertained.Type: GrantFiled: February 13, 2013Date of Patent: July 8, 2014Assignee: Ricoh Company, Ltd.Inventors: Ippei Kimura, Takamitsu Ikematsu, Kaoru Tada, Ikuo Fujii
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Publication number: 20140077444Abstract: A feeding device includes a paper feed tray, a detector on an image forming apparatus main body, a control member rotatably supported by the paper feed tray, and spacers. The detector includes movable pieces and contact points corresponding to the movable piece, and switches each contact point by the position of the corresponding movable piece. The control member includes a control surface formed on its outer circumferential surface with projecting and recessed portions. The projecting and recessed portions are disposed in a pattern corresponding to rotation angles in an area of the control surface facing the movable pieces. Controlling the positions of the movable pieces according to the pattern encodes paper size. Each movable piece is lined in the circumferential direction facing the control surface. The outer circumferential surface of the projecting portions is formed in a cylindrical surface shape centering around the rotational axis of the control member.Type: ApplicationFiled: September 12, 2013Publication date: March 20, 2014Applicant: RICOH COMPANY, LIMITEDInventors: Ikuo FUJII, Yasuo MATSUYAMA, Ippei KIMURA, Mizuna TANAKA, Hirofumi HORITA, Takamitsu IKEMATSU, Kaoru TADA
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Publication number: 20130228962Abstract: A sheet feed unit includes a medium container configured to contain sheet-like recording media; a bottom plate disposed in the medium container and configured to accommodate the recording media thereon; a sheet feed device configured to feed out the recording media contained in the medium container; a main body of the sheet feed unit, which the medium container can be inserted into and pulled out from, including the sheet feed device; and a displaying member configured to display a remaining level of the recording media in the medium container, the displaying member including a first display oriented in a first direction and a second display oriented in a second direction perpendicular to the first direction. The sheet feed unit improves a freeness in the observable range of the displaying member and the remaining level of the recording media in the medium container can be more accurately ascertained.Type: ApplicationFiled: February 13, 2013Publication date: September 5, 2013Inventors: Ippei KIMURA, Takamitsu IKEMATSU, Kaoru TADA, Ikuo FUJII
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Publication number: 20130200562Abstract: A sheet supplying device includes a recording media container to accommodate a stack of recording media therein, a sheet feeding unit to feed a recording medium from the stack of recording media in the recording media container, a frame to support the recording media container and the sheet feeding unit, a holder to hold the recording media container by surrounding the outer circumference of the recording media container, and a locking mechanism to engage the frame and the holder with each other. The recording media container is detachably attachable to the frame in a first detaching and attaching operation and a second detaching and attaching operation. The locking mechanism causes the frame and the holder to engage at removal of the recording media container in the first detaching and attaching operation.Type: ApplicationFiled: January 10, 2013Publication date: August 8, 2013Inventors: Ippei KIMURA, Takamitsu IKEMATSU, Ikuo FUJII, Kaoru TADA
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Publication number: 20130177342Abstract: An image forming apparatus includes a main body and a sheet container. The main body includes an image forming device to form the image on a sheet. The sheet container is removably installable in the main body, accommodates a stack of sheets, and is movable between a first state that the sheet container is installed in the main body and a second state that the sheet container is removed from a first side surface of the image forming apparatus. The planar member includes a cutout opening in an upper end of the planar member, a lower edge of the opening forms a pull-out handle on the first side surface to assist in removal of the sheet container form the image forming apparatus, and an upper edge of the opening forms a lift-up handle to assist in lifting the image forming apparatus with the sheet container installed therein.Type: ApplicationFiled: December 28, 2012Publication date: July 11, 2013Inventors: Kaoru TADA, Takamitsu IKEMATSU, Ippei KIMURA, Ikuo FUJII
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Publication number: 20130043647Abstract: An image forming apparatus includes an image forming unit to form an image on a sheet-shaped recording medium; a registration roller pair to convey the recording medium to the image forming unit; a sheet feed roller to convey the recording medium to the registration roller pair; and a controller to control driving of the registration roller pair and the sheet feed roller. In such an image forming apparatus, the controller starts driving of the sheet feed roller to feed the recording medium and stops driving of the sheet feed roller before the sheet feed roller has completed conveyance of the recording medium for a distance equal to a length of the settable minimum-sized recording medium in the conveyance direction.Type: ApplicationFiled: August 10, 2012Publication date: February 21, 2013Applicant: RICOH COMPANY, LTD.Inventors: Ikuo FUJII, Takamitsu IKEMATSU, Ippei KIMURA, Kaoru TADA
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Patent number: 8360418Abstract: A sheet supplying device that is incorporatable in an image forming apparatus includes a recording media container, a sheet feeding unit to feed a recording medium from the recording media container, a frame to support the recording media container and the sheet feeding unit, and a holder to hold the recording media container by surrounding an outer circumference of the recording media container. The recording media container is detachably attachable to the frame in a first operation in which the recording media container is moved in a direction parallel to a sheet conveyance direction and the recording media container is separated from the frame and the holder with the holder remaining in the frame, and a second operation in which the recording media container is moved in a direction perpendicular to the sheet conveyance direction and the recording media container is separated from the frame together with the holder.Type: GrantFiled: September 7, 2011Date of Patent: January 29, 2013Assignee: Ricoh, Company, Ltd.Inventors: Yasuo Matsuyama, Takamitsu Ikematsu, Kaoru Tada, Ippei Kimura, Ikuo Fujii
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Publication number: 20120061907Abstract: A sheet supplying device that is incorporatable in an image forming apparatus includes a recording media container, a sheet feeding unit to feed a recording medium from the recording media container, a frame to support the recording media container and the sheet feeding unit, and a holder to hold the recording media container by surrounding an outer circumference of the recording media container. The recording media container is detachably attachable to the frame in a first operation in which the recording media container is moved in a direction parallel to a sheet conveyance direction and the recording media container is separated from the frame and the holder with the holder remaining in the frame, and a second operation in which the recording media container is moved in a direction perpendicular to the sheet conveyance direction and the recording media container is separated from the frame together with the holder.Type: ApplicationFiled: September 7, 2011Publication date: March 15, 2012Applicant: Ricoh Company, Ltd.Inventors: Yasuo Matsuyama, Takamitsu Ikematsu, Kaoru Tada, Ippei Kimura, Ikuo Fujii
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Publication number: 20120063829Abstract: A sheet supplying device that is incorporatable in an image forming apparatus includes a recording media container, a sheet feeding unit to feed a recording medium from the recording media container, and a frame to support the recording media container and the sheet feeding unit. The recording media container is detachably attachable to the frame in a first operation in which the recording media container is moved in a sheet conveyance direction in which the recording medium is conveyed upstream or downstream by the sheet feeding unit, and the recording media container is separated from the frame and the sheet feeding unit with the sheet feeding unit remaining in the frame, and a second operation in which the recording media container is moved in a direction perpendicular to the sheet conveyance direction, and the recording media container is separated from the frame together with the sheet feeding unit.Type: ApplicationFiled: September 7, 2011Publication date: March 15, 2012Applicant: Ricoh Company, Ltd.Inventors: Yasuo Matsuyama, Ippei Kimura, Ikuo Fujii, Takamitsu Ikematsu, Masafumi Takahira, Kaoru Tada, Tomoyoshi Yamazaki, Toru Hanashima, Chikara Hiraoka, Tamotsu Ikeda, Kazuyoshi Kondo
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Patent number: 7804628Abstract: An image forming apparatus includes: an image forming unit that forms an image on a recording sheet; an image reading unit provided above the image forming unit so as to open and close with respect to the image forming unit; an automatic document feeder provided above the image reading unit so as to open and close with respect to the image reading unit; and an open-close regulation mechanism that regulates opening and closing movements of the automatic document feeder so that when the image reading unit is closed with respect to the image forming unit, the automatic document feeder is capable of opening with respect to the image reading unit, and when the image reading unit is opened with respect to the image forming unit, the automatic document feeder is prevented to open with respect to the image reading unit.Type: GrantFiled: August 28, 2006Date of Patent: September 28, 2010Assignees: Ricoh Printing Sysetms, Inc., Brother Kogyo Kabushiki KaishaInventors: Haruo Hashimoto, Takamitsu Ikematsu, Katsumi Kumada, Masato Moribe
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Patent number: 7758040Abstract: According to an aspect of the present invention, there is provided a sheet feed cassette including: a main container on which sheets are mounted; a sub container slidably attached to the main container; and first slidable portions that are arranged on sidewalls of each of the main container and the sub container, and that are formed in a U-shape.Type: GrantFiled: December 26, 2007Date of Patent: July 20, 2010Assignee: Ricoh Company, Ltd.Inventors: Haruo Hashimoto, Takamitsu Ikematsu, Kazuhiro Wakamatsu, Kouichi Oomori, Tadashi Okano, Akio Miyauchi, Katsumi Kumada
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Patent number: 7570898Abstract: According to an aspect of the invention, an image forming apparatus comprises: a manuscript reading device reading a manuscript and converting the manuscript into an image signal; a recording device printing on paper; at least one rotating support member connecting the manuscript reading device and the recording device, and a wiring housing member housing the electrical wiring. The recording device is electrically connected to the manuscript reading device by an electrical wiring. The rotating support member is configured so as to rotate the manuscript reading device relative to the recording device. The wiring housing member is positioned different from the rotating support member.Type: GrantFiled: August 30, 2006Date of Patent: August 4, 2009Assignee: Ricoh Company, Ltd.Inventors: Atsushi Onose, Takamitsu Ikematsu, Katsumi Kumada, Mitsuhiro Furuse
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Patent number: 7441766Abstract: A paper feeder is capable of minimizing abnormal noise produced at a separation pad during paper feed, without reducing the paper feed capability, for use in an image forming apparatus using the same. Buffers are mounted on the separation pad. This arrangement ensures that, when a stick-slip condition occurs between the paper and separation pad during paper feed, and the separation pad is vibrated by the paper, the buffer vibrates so as to dissipate the vibration energy of the separation pad, with the result that the vibration of the separation pad is minimized, thereby to reduce any abnormal noise.Type: GrantFiled: July 30, 2004Date of Patent: October 28, 2008Assignee: Ricoh Printing Systems, Ltd.Inventors: Hiroyuki Seki, Shunichi Oohara, Yoshiaki Yamauchi, Takamitsu Ikematsu, Kazuo Kikuchi, Seiji Okunomiya
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Publication number: 20080179818Abstract: According to an aspect of the present invention, there is provided a sheet feed cassette including: a main container on which sheets are mounted; a sub container slidably attached to the main container; and first slidable portions that are arranged on sidewalls of each of the main container and the sub container, and that are formed in a U-shape.Type: ApplicationFiled: December 26, 2007Publication date: July 31, 2008Inventors: Haruo Hashimoto, Takamitsu Ikematsu, Kazuhiro Wakamatsu, Kouichi Oomori, Tadashi Okano, Akio Miyauchi, Katsumi Kumada
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Patent number: 7292805Abstract: An image forming device includes an openable panel disposed on a side of the image forming device. The panel includes a pair of carrying rollers, a transcribing roller and a pair of discharging sheet carrying rollers.Type: GrantFiled: December 22, 2004Date of Patent: November 6, 2007Assignee: Ricoh Printing Systems, Ltd.Inventors: Haruo Hashimoto, Kazuhiro Wakamatsu, Tadashi Okano, Takamitsu Ikematsu, Shoji Ukei
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Publication number: 20070047028Abstract: An image forming apparatus includes: an image forming unit that forms an image on a recording sheet; an image reading unit provided above the image forming unit so as to open and close with respect to the image forming unit; an automatic document feeder provided above the image reading unit so as to open and close with respect to the image reading unit; and an open-close regulation mechanism that regulates opening and closing movements of the automatic document feeder so that when the image reading unit is closed with respect to the image forming unit, the automatic document feeder is capable of opening with respect to the image reading unit, and when the image reading unit is opened with respect to the image forming unit, the automatic document feeder is prevented to open with respect to the image reading unit.Type: ApplicationFiled: August 28, 2006Publication date: March 1, 2007Applicants: RICOH PRINTING SYSTEMS, LTD., BROTHER KOGOY KABUSHIKI KAISHAInventors: Haruo Hashimoto, Takamitsu Ikematsu, Katsumi Kumada, Masato Moribe
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Publication number: 20070047024Abstract: According to an aspect of the invention, an image forming apparatus comprises: a manuscript reading device reading a manuscript and converting the manuscript into an image signal; a recording device printing on paper; at least one rotating support member connecting the manuscript reading device and the recording device, and a wiring housing member housing the electrical wiring. The recording device is electrically connected to the manuscript reading device by an electrical wiring. The rotating support member is configured so as to rotate the manuscript reading device relative to the recording device. The wiring housing member is positioned different from the rotating support member.Type: ApplicationFiled: August 30, 2006Publication date: March 1, 2007Applicant: ROCOH PRINTING SYSTEMS, LTD.Inventors: Atsushi Onose, Takamitsu Ikematsu, Katsumi Kumada, Mitsuhiro Furuse