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Kenji Ishii patents

Recent bibliographic sampling of Kenji Ishii patents listed/published in the public domain by the USPTO (USPTO Patent Application #,Title):



05/07/15 - 20150125193 - Fixing device and image forming apparatus
A fixing device includes a fixing rotator, a nip formation pad disposed opposite an inner circumferential surface of the fixing rotator, and a pressure rotator pressed against the nip formation pad via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator, through which...
Inventors: Kenji Ishii, Hiromasa Takagi, Takayuki Seki, Keitaro Shoji

04/23/15 - 20150110531 - Fixing device and image forming apparatus
A fixing device includes a fixing rotator and a pressure rotator pressed against a nip formation pad via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator, through which a recording medium is conveyed. The nip formation pad includes an increased thermal conduction...
Inventors: Hiromasa Takagi, Kenji Ishii, Takayuki Seki, Keitaro Shoji

04/16/15 - 20150104230 - Fixing device with a temperature detector adjacent an easily deformable location and image forming apparatus including same
A fixing device for fixing an unfixed image onto a recording medium includes a fixing belt, a nip forming member, an opposing rotary member, a heater, and a temperature detector. The fixing belt is formed into a loop to move endlessly and fix the unfixed image on the recording medium....
Inventors: Takeshi Uchitani, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Tadashi Ogawa, Takahiro Imada, Hiromasa Takagi, Kazuya Saito, Naoki Iwaya, Toshihiko Shimokawa, Kensuke Yamaji, Teppei Kawata, Takamasa Hase, Takuya Seshita, Shuutaroh Yuasa, Arinobu Yoshiura, Hajime Gotoh, Akira Suzuki, Hiroshi Yoshinaga

03/05/15 - 20150063884 - Fixing device and image forming apparatus incorporating same
A fixing device that fixes an image on a recording medium includes a rotatable endless belt, deployed in a loop supported by rollers, a nip forming member provided inside the loop formed by the belt, a support member that supports the nip forming member, a counter rotation body disposed outside...
Inventors: Naoki Iwaya, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa, Takeshi Uchitani, Hiromasa Takagi, Takuya Seshita, Takahiro Imada, Takamasa Hase, Hajime Gotoh, Arinobu Yoshiura, Teppei Kawata, Toshihiko Shimokawa, Shuutaroh Yuasa, Kazuya Saito, Kensuke Yamaji, Akira Suzuki

02/26/15 - 20150055994 - Fixing device and image forming apparatus
A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and an opposed rotator disposed opposite the fixing rotator to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A heater is disposed opposite the fixing rotator to heat...
Inventors: Keitaro Shoji, Kenji Ishii, Hiromasa Takagi, Takayuki Seki

01/22/15 - 20150023705 - Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the same
A fixing device includes an endless belt rotatable in a predetermined direction of rotation and a nip formation assembly disposed opposite an inner circumferential surface of the endless belt. An opposed rotary body is pressed against the nip formation assembly via the endless belt to form a fixing nip between...
Inventors: Teppei Kawata, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa, Takahiro Imada, Hiromasa Takagi, Kazuya Saito, Naoki Iwaya, Kensuke Yamaji, Takamasa Hase, Toshihiko Shimokawa, Shuutaroh Yuasa, Takuya Seshita, Takeshi Uchitani, Arinobu Yoshiura, Hajime Gotoh, Akira Suzuki

12/18/14 - 20140369703 - Image forming apparatus
An image forming apparatus includes a fixing device. The fixing device includes a rotatable endless fixing member, a nip forming member arranged inside the fixing member, a pressing member in contact with the nip forming member via the fixing member, and a heating source configured to heat the fixing member....
Inventors: Takamasa Hase, Masahiko Satoh, Shinichi Namekata, Kenji Ishii, Takeshi Uchitani, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura, Kazuya Saito, Toshihiko Shimokawa, Shuutaroh Yuasa, Kensuke Yamaji, Masaaki Yoshikawa, Hiroshi Yoshinaga, Hiromasa Takagi, Naoki Iwaya, Takuya Seshita, Takahiro Imada, Hajime Gotoh, Akira Suzuki

09/25/14 - 20140286684 - Fixing device and image forming apparatus
A fixing device includes an endless belt, a heater disposed opposite the endless belt to heat the endless belt, and a pressing rotary body contacting an outer circumferential surface of the endless belt. A nip formation pad presses against the pressing rotary body via the endless belt to form a...
Inventors: Hiromasa Takagi, Kenji Ishii, Arinobu Yoshiura (Ricoh Company, Ltd.)

08/28/14 - 20140241766 - Fixing device and image forming apparatus with same
A fixing device fixes an unfixed image onto a recording medium by heating the recording medium conveyed to a fixing nip. The fixing device includes a rotator, a belt rotatable by contacting the rotator, and a fixing nip-forming member provided inside a loop of the fixing belt to together form...
Inventors: Kenji Ishii, Hiromasa Takagi, Arinobu Yoshiura

05/15/14 - 20140133879 - Image forming apparatus
In the present invention, upon return from a standby mode or sleep mode, image data is acquired as warming-up time estimate information for estimating the warming-up time to increase the temperature of a fixing belt to a target fixing temperature and, if the acquired image data is the data on...
Inventors: Takuya Seshita, Masahiko Satoh, Masaaki Yoshikawa, Hiroshi Yoshinaga, Naoki Iwaya, Hiromasa Takagi, Takahiro Imada, Hajime Gotoh, Akira Suzuki, Kenji Ishii, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura, Toshihiko Shimokawa, Kensuke Yamaji, Takeshi Uchitani, Takamasa Hase, Shuutaroh Yuasa (Ricoh Company, Limited)

03/20/14 - 20140079453 - Fixing device and image forming apparatus
A fixing device includes a fixing rotary body and a heater disposed opposite the fixing rotary body. A heat shield is movable in a circumferential direction of the fixing rotary body and interposed between the heater and the fixing rotary body to shield the fixing rotary body from the heater....
Inventors: Yuji Arai, Takayuki Seki, Yoshiki Yamaguchi, Shuntaroh Tamaki, Yutaka Ikebuchi, Kazuya Saito, Kenji Ishii, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura, Toshihiko Shimokawa, Kensuke Yamaji, Masaaki Yoshikawa, Hiromasa Takagi, Naoki Iwaya, Takahiro Imada, Hajime Gotoh, Akira Suzuki, Hiroshi Yoshinaga, Ryuuichi Mimbu, Takuya Seshita, Takeshi Yamamoto, Shuutaroh Yuasa

03/06/14 - 20140064804 - Fixing device and image forming apparatus including same
A fixing device includes a rotary fixing member, a heater, a pressing member, a nip formation member, a reinforcement member, a sliding sheet, and a holding member. The nip formation member is disposed at an inner circumferential side of the fixing member and pressed by the pressing member via the...
Inventors: Yoshiki Yamaguchi, Takayuki Seki, Yuji Arai, Yutaka Ikebuchi, Shuntaroh Tamaki, Kazuya Saito, Kenji Ishii, Tadashi Ogawa, Teppei Kawata, Toshihiko Shimokawa, Arinobu Yoshiura, Kensuke Yamaji, Hiromasa Takagi, Naoki Iwaya, Takahiro Imada, Akira Suzuki

01/16/14 - 20140016971 - Fixing device and image forming apparatus incorporating same
A fixing device includes a fixing rotary body rotatable in a given direction of rotation and a pressing rotary body pressed against the fixing rotary body to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A heater is disposed inside the fixing...
Inventors: Yuji Arai, Masaaki Yoshikawa, Kenji Ishii, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura, Toshihiko Shimokawa, Kensuke Yamaji, Yoshiki Yamaguchi, Hiromasa Takagi, Naoki Iwaya, Takahiro Imada, Hajime Gotoh, Akira Suzuki (Ricoh Company, Ltd.)

10/10/13 - 20130266355 - Fixing apparatus and image forming apparatus
A fixing apparatus includes: a fixing belt; a pressurizing roller; a supporting member; a heating unit; a nip forming member; and a deform preventing unit. The fixing apparatus and an image forming apparatus including the fixing apparatus prevent a supporting member from deforming due to sliding of a fixing member,...
Inventors: Arinobu Yoshiura, Masaaki Yoshikawa, Yuji Arai, Yoshiki Yamaguchi, Tetsuo Tokuda, Yutaka Ikebuchi, Toshihiko Shimokawa, Kenji Ishii, Hiroshi Yoshinaga, Hiromasa Takagi, Naoki Iwaya, Takuya Seshita, Takahiro Imada, Hajime Gotoh, Ippei Fujimoto

09/26/13 - 20130251422 - Fixing device and guide mechanism included therein
A fixing device includes a rotatable, endless flexible belt, an elongated stationary pad, a rotatable pressure member, a rotary driver, a releasable biasing mechanism, a first guide member, and a second guide member. The endless flexible belt is looped into a generally cylindrical configuration. The elongated stationary pad is stationarily...
Inventors: Naoki Iwaya, Masahiko Satoh, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii, Tadashi Ogawa, Hiromasa Takagi, Takeshi Uchitani, Takuya Seshita, Takahiro Imada, Hajime Gotoh, Akira Suzuki, Teppei Kawata, Toshihiko Shimokawa, Arinobu Yoshiura, Takamasa Hase, Shuutaroh Yuasa, Kensuke Yamaji (Ricoh Company, Ltd.)

09/26/13 - 20130251390 - Fixing device, image forming apparatus incorporating same, and fixing method
A fixing device includes a fixing rotary body rotatable in a predetermined direction of rotation and a heater disposed opposite and heating a heating span of the fixing rotary body. A controller is operatively connected to a power supply that supplies power to the heater and a driver that rotates...
Inventors: Kenji Ishii, Yuji Arai, Yoshiki Yamaguchi, Arinobu Yoshiura, Toshihiko Shimokawa, Masaaki Yoshikawa, Hiromasa Takagi, Akira Suzuki, Naoki Iwaya, Takahiro Imada, Hajime Gotoh, Tadashi Ogawa, Kensuke Yamaji, Teppei Kawata

09/12/13 - 20130236225 - Fixing device and image forming apparatus incorporating same
A fixing device includes an endless belt and a pressing body pressed against the endless belt to form a fixing nip therebetween through which a recording medium is conveyed. A separator contacts and separates the recording medium discharged from the fixing nip from the endless belt. The separator includes a...
Inventors: Tadashi Ogawa, Masaaki Yoshikawa, Kenji Ishii, Teppei Kawata, Arinobu Yoshiura, Toshihiko Shimokawa, Kensuke Yamaji, Yuji Arai, Yoshiki Yamaguchi, Hiromasa Takagi, Naoki Iwaya, Takahiro Imada, Hajime Gotoh, Akira Suzuki

08/15/13 - 20130209147 - Fixing device capable of minimizing damage of endless rotary body and image forming apparatus incorporating same
A fixing device includes at least one heater disposed opposite an inner circumferential surface of an endless rotary body to heat the endless rotary body and a shield interposed between the endless rotary body and the at least one heater to shield the endless rotary body from heat radiated from...
Inventors: Tadashi Ogawa, Masahiko Satoh, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii, Takeshi Uchitani, Hiromasa Takagi, Naoki Iwaya, Takuya Seshita, Takahiro Imada, Hajime Gotoh, Takamasa Hase, Kazuya Saito, Toshihiko Shimokawa, Shuutaroh Yuasa, Teppei Kawata, Arinobu Yoshiura, Kensuke Yamaji, Akira Suzuki

08/15/13 - 20130209146 - Fixing device capable of minimizing damage of endless belt and image forming apparatus incorporating same
A fixing device includes an endless belt and a belt holder contacting and rotatably supporting each lateral end of the endless belt in an axial direction thereof. A first protection ring and a second protection ring are interposed between the endless belt and the belt holder in the axial direction...
Inventors: Kensuke Yamaji, Masahiko Satoh, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii, Tadashi Ogawa, Takeshi Uchitani, Hiromasa Takagi, Naoki Iwaya, Teppei Kawata, Arinobu Yoshiura, Takahiro Imada, Hajime Gotoh, Takamasa Hase, Kazuya Saito, Toshihiko Shimokawa, Shuutaroh Yuasa, Akira Suzuki

08/15/13 - 20130209139 - Fixing device and image forming apparatus incorporating same
A fixing device capable of incorporating in an image forming apparatus includes a belt unit including a rotatable elastic endless belt having a sleeve shape without a driving shaft and a nip forming member disposed contactable against an inner surface of the endless belt, and a pressing member to form...
Inventors: Tadashi Ogawa, Kenji Ishii, Teppei Kawata, Arinobu Yoshiura, Toshihiko Shimokawa, Kensuke Yamaji, Yuji Arai, Yoshiki Yamaguchi, Hiromasa Takagi, Naoki Iwaya, Takahiro Imada, Hajime Gotoh, Akira Suzuki, Masaaki Yoshikawa

08/15/13 - 20130209131 - Fixing device and image forming apparatus
A fixing device capable of shifting to a sleep state includes a heat source; a rotatable fixing member that is partly heated by the heat source to heat an unfixed image carrying surface of a recording medium; a rotatable pressing member that is in pressure contact with the fixing member...
Inventors: Takeshi Uchitani, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Tadashi Ogawa, Takahiro Imada, Hiromasa Takagi, Hiroshi Yoshinaga, Arinobu Yoshiura, Teppei Kawata, Takamasa Hase, Hajime Gotoh, Takuya Seshita, Kazuya Saito, Toshihiko Shimokawa, Kensuke Yamaji, Shuutaroh Yuasa, Akira Suzuki, Shinichi Namekata, Ryota Yamashina, Yasunori Ishigaya

08/15/13 - 20130209125 - Fixing device and image forming apparatus including same
A fixing device for fixing an unfixed image onto a recording medium includes a fixing belt, a nip forming member, an opposing rotary member, a heater, and a temperature detector. The fixing belt is formed into a loop to move endlessly and fix the unfixed image on the recording medium....
Inventors: Takeshi Uchitani, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Tadashi Ogawa, Takahiro Imada, Hiromasa Takagi, Kazuya Saito, Naoki Iwaya, Toshihiko Shimokawa, Kensuke Yamaji, Teppei Kawata, Takamasa Hase, Takuya Seshita, Shuutaroh Yuasa, Arinobu Yoshiura, Hajime Gotoh, Akira Suzuki, Hiroshi Yoshinaga

08/15/13 - 20130209121 - Fixing device and image forming apparatus including same
A fixing device includes a heat source; a fixing member looped into a generally cylindrical shape to rotate in a circumferential direction thereof and partially heated by the heat source and to heat a surface of a recording medium bearing an unfixed toner image to fix the unfixed toner image...
Inventors: Takeshi Uchitani, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura, Toshihiko Shimokawa, Kensuke Yamaji, Takamasa Hase, Shuutaroh Yuasa, Masaaki Yoshikawa, Hiromasa Takagi, Takahiro Imada, Hajime Gotoh, Akira Suzuki, Takuya Seshita, Hiroshi Yoshinaga, Kazuya Saito, Shinichi Namekata, Takayuki Seki, Yuji Arai, Ryuuichi Mimbu, Yoshiki Yamaguchi, Shuntaroh Tamaki, Yutaka Ikebuchi

08/15/13 - 20130209119 - Fixing device, image forming apparatus incorporating same, and fixing method
A fixing device includes a controller connected to a heater and at least one of a pressing rotary body and an endless rotary body. The controller performs a first fixing operation, a first transition operation, a second fixing operation, and a second transition operation. The first fixing operation fixes a...
Inventors: Shuutaroh Yuasa, Takeshi Uchitani, Takamasa Hase, Takuya Seshita, Hiroshi Yoshinaga, Kenji Ishii, Tadashi Ogawa, Arinobu Yoshiura, Teppei Kawata, Toshihiko Shimokawa, Kensuke Yamaji, Masaaki Yoshikawa, Masahiko Satoh, Hiromasa Takagi, Takahiro Imada, Hajime Gotoh, Akira Suzuki, Shinichi Namekata, Kazuya Saito

08/15/13 - 20130209115 - Image forming apparatus
An image forming apparatus includes a fixing device. The fixing device includes a rotatable endless fixing member, a nip forming member arranged inside the fixing member, a pressing member in contact with the nip forming member via the fixing member, and a heating source configured to heat the fixing member....
Inventors: Takamasa Hase, Masahiko Satoh, Shinichi Namekata, Kenji Ishii, Takeshi Uchitani, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura, Kazuya Saito, Toshihiko Shimokawa, Shuutaroh Yuasa, Kensuke Yamaji, Masaaki Yoshikawa, Hiroshi Yoshinaga, Hiromasa Takagi, Naoki Iwaya, Takuya Seshita, Takahiro Imada, Hajime Gotoh, Akira Suzuki

08/08/13 - 20130202320 - Fixing device and image forming apparatus including same
A fixing device including a fixing member, an opposing member, a plurality of heat sources, and a voltage detector. The opposing member is disposed opposite the fixing member to contact the fixing member to form a nip portion at which an unfixed image on a recording medium is fixed. The...
Inventors: Takamasa Hase, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa, Takeshi Uchitani, Hiromasa Takagi, Naoki Iwaya, Teppei Kawata, Takuya Seshita, Arinobu Yoshiura, Takahiro Imada, Hajime Gotoh, Kazuya Saito, Toshihiko Shimokawa, Shuutaroh Yuasa, Kensuke Yamaji, Akira Suzuki

08/01/13 - 20130195525 - Fixing device and image forming apparatus
A fixing device includes: a rotatable endless fixing belt; a nip forming member arranged inside the fixing belt; a facing rotating body that abuts the nip forming member via the fixing belt to form a nip portion with the fixing belt; a heat source that directly heats up the fixing...
Inventors: Hiroshi Yoshinaga, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Tadashi Ogawa, Hiromasa Takagi, Naoki Iwaya, Takuya Seshita, Takahiro Imada, Hajime Gotoh, Akira Suzuki, Teppei Kawata, Toshihiko Shimokawa, Arinobu Yoshiura, Takamasa Hase, Takeshi Uchitani, Shuutaroh Yuasa, Kensuke Yamaji

08/01/13 - 20130195524 - Fixing device and endless belt assembly
A fixing device includes an endless flexible belt, an elongated stationary pad, a rotary pressure member, a low-friction sheet of lubricant-impregnated material, a first adhesive layer, and a second adhesive layer. The endless flexible belt is looped into a generally cylindrical configuration extending in an axial direction thereof for rotation...
Inventors: Kenji Ishii, Masahiko Satoh, Masaaki Yoshikawa, Hiroshi Yoshinaga, Takeshi Uchitani, Tadashi Ogawa, Hiromasa Takagi, Naoki Iwaya, Takuya Seshita, Takahiro Imada, Hajime Gotoh, Takamasa Hase, Kazuya Saito, Toshihiko Shimokawa, Shuutaroh Yuasa, Teppei Kawata, Arinobu Yoshiura, Kensuke Yamaji, Akira Suzuki

08/01/13 - 20130195523 - Fixing device
A fixing device includes an endless flexible belt, an elongated stationary pad, a rotary pressure member, and a low-friction sheet. The endless flexible belt is looped into a generally cylindrical configuration extending in an axial direction thereof for rotation in a rotational, circumferential direction thereof. The elongated stationary pad is...
Inventors: Kensuke Yamaji, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa, Takeshi Uchitani, Hiromasa Takagi, Takuya Seshita, Teppei Kawata, Arinobu Yoshiura, Takahiro Imada, Hajime Gotoh, Takamasa Hase, Toshihiko Shimokawa, Shuutaroh Yuasa, Akira Suzuki

08/01/13 - 20130195493 - Fixing device and image forming device
According to an embodiment, provided is a fixing device that includes: a rotatable fixing member that heats a recording medium on a side carrying an unfixed image; a rotatable pressing member that is pressed and is contacted with the fixing member to form a nip portion between the pressing member...
Inventors: Takamasa Hase, Kenji Ishii, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura, Toshihiko Shimokawa, Kensuke Yamaji, Takeshi Uchitani, Shuutaroh Yuasa, Masaaki Yoshikawa, Hiroshi Yoshinaga, Hiromasa Takagi, Naoki Iwaya, Takahiro Imada, Hajime Gotoh, Takuya Seshita, Ryota Yamashina, Yasunori Ishigaya

08/01/13 - 20130195477 - Fixing device and image forming apparatus incorporating same
A fixing device comprises a rotatable fixing member to apply heat to a recording medium bearing an unfixed image thereon, a heat source to heat the fixing member, and a rotatable pressing member pressing against the fixing member forming a nip therebetween. A driving source rotates and drives the fixing...
Inventors: Takuya Seshita, Masahiko Satoh, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii, Tadashi Ogawa, Takahiro Imada, Hiromasa Takagi, Kazuya Saito, Naoki Iwaya, Toshihiko Shimokawa, Kensuke Yamaji, Teppei Kawata, Takamasa Hase, Shuutaroh Yuasa, Takeshi Uchitani, Arinobu Yoshiura, Hajime Gotoh, Akira Suzuki, Ryota Yamashina, Yasunori Ishigaya

07/25/13 - 20130189008 - Fixing device and endless belt assembly
A fixing device includes an endless flexible belt, a stationary pad, a rotary pressure member, and a lubrication mechanism. The endless flexible belt is looped into a generally cylindrical configuration extending in an axial direction thereof for rotation in a rotational, circumferential direction thereof. The stationary pad is stationarily disposed...
Inventors: Kenji Ishii, Masahiko Satoh, Masaaki Yoshikawa, Hiroshi Yoshinaga, Takeshi Uchitani, Tadashi Ogawa, Hiromasa Takagi, Naoki Iwaya, Takuya Seshita, Takahiro Imada, Hajime Gotoh, Takamasa Hase, Kazuya Saito, Toshihiko Shimokawa, Shuutaroh Yuasa, Teppei Kawata, Arinobu Yoshiura, Akira Suzuki

07/25/13 - 20130189005 - Separator and separation device, fixing device, and image forming apparatus incorporating same
A separator includes a front edge disposed opposite an outer circumferential surface of an endless belt. The front edge contacts and separates a recording medium from the endless belt. A separation plate mounts the front edge. A contact plate projects from the separation plate in an axial direction of the...
Inventors: Kazuya Saito, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Tadashi Ogawa, Hiromasa Takagi, Takahiro Imada, Naoki Iwaya, Toshihiko Shimokawa, Kensuke Yamaji, Teppei Kawata, Takamasa Hase, Shuutaroh Yuasa, Takuya Seshita, Takeshi Uchitani, Arinobu Yoshiura, Hajime Gotoh, Akira Suzuki, Hiroshi Yoshinaga

07/25/13 - 20130188991 - Fixing device and image forming apparatus equipped with fixing device
A fixing device comprises a rotatable fixing member to heat a side of a recording medium bearing an unfixed image; a heat source to heat the rotatable fixing member; a rotatable pressing member disposed opposite the fixing member to press against an outer side of the fixing member; a housing...
Inventors: Teppei Kawata, Kenji Ishii, Tadashi Ogawa, Arinobu Yoshiura, Toshihiko Shimokawa, Kensuke Yamaji, Yuji Arai, Yoshiki Yamaguchi, Hiromasa Takagi, Naoki Iwaya, Takahiro Imada, Hajime Gotoh, Akira Suzuki, Masaaki Yoshikawa, Takayuki Seki, Shuntaroh Tamaki, Kazuya Saito, Yutaka Ikebuchi

07/18/13 - 20130183071 - Fixing device and image forming apparatus incorporating same
A fixing device that fixes an image on a recording medium includes a rotatable endless belt, deployed in a loop supported by rollers, a nip forming member provided inside the loop formed by the belt, a support member that supports the nip forming member, a counter rotation body disposed outside...
Inventors: Naoki Iwaya, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa, Takeshi Uchitani, Hiromasa Takagi, Takuya Seshita, Takahiro Imada, Takamasa Hase, Hajime Gotoh, Arinobu Yoshiura, Teppei Kawata, Toshihiko Shimokawa, Shuutaroh Yuasa, Kazuya Saito, Kensuke Yamaji, Akira Suzuki

07/18/13 - 20130183070 - Fixing device and image forming apparatus including the fixing device
A fixing device for fixing an image on a recording medium includes an endless fixing rotary member which is formed into a loop and comes into contact with the image on the recording medium, an opposed rotary member which is in contact with the fixing rotary member, a nip forming...
Inventors: Teppei Kawata, Masahiko Satoh, Kenji Ishii, Masaaki Yoshikawa, Hiroshi Yoshinaga, Takeshi Uchitani, Tadashi Ogawa, Hiromasa Takagi, Naoki Iwaya, Takuya Seshita, Takahiro Imada, Hajime Gotoh, Takamasa Hase, Kazuya Saito, Toshihiko Shimokawa, Shuutaroh Yuasa, Arinobu Yoshiura, Kensuke Yamaji, Akira Suzuki

07/11/13 - 20130177340 - Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the same
A fixing device includes an endless belt rotatable in a predetermined direction of rotation and a nip formation assembly disposed opposite an inner circumferential surface of the endless belt. An opposed rotary body is pressed against the nip formation assembly via the endless belt to form a fixing nip between...
Inventors: Teppei Kawata, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa, Takahiro Imada, Hiromasa Takagi, Kazuya Saito, Naoki Iwaya, Kensuke Yamaji, Takamasa Hase, Toshihiko Shimokawa, Shuutaroh Yuasa, Takuya Seshita, Takeshi Uchitani, Arinobu Yoshiura, Hajime Gotoh, Akira Suzuki

07/04/13 - 20130170880 - Fixing device with endless belt and image forming apparatus incorporating same
The fixing device includes a nip formation assembly partially pressing against an opposed rotary body via an endless belt to form a fixing nip between the endless belt and the opposed rotary body. The nip formation assembly includes a base pad defining the fixing nip and including a pressure portion,...
Inventors: Hajime Gotoh, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Tadashi Ogawa, Takahiro Imada, Hiromasa Takagi, Kazuya Saito, Naoki Iwaya, Toshihiko Shimokawa, Kensuke Yamaji, Teppei Kawata, Takamasa Hase, Shuutaroh Yuasa, Takuya Seshita, Takeshi Uchitani, Arinobu Yoshiura, Akira Suzuki, Hiroshi Yoshinaga

07/04/13 - 20130170879 - Fixing device with support and image forming apparatus incorporating same
A fixing device includes a support supporting a nip formation assembly that presses against an opposed rotary body via an endless belt to form a fixing nip between the endless belt and the opposed rotary body. The support includes a base contacting the nip formation assembly. An upstream projection projects...
Inventors: Hiroshi Yoshinaga, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Tadashi Ogawa, Takahiro Imada, Hiromasa Takagi, Kazuya Saito, Naoki Iwaya, Toshihiko Shimokawa, Kensuke Yamaji, Teppei Kawata, Takamasa Hase, Shuutaroh Yuasa, Takuya Seshita, Takeshi Uchitani, Arinobu Yoshiura, Hajime Gotoh, Akira Suzuki

07/04/13 - 20130170877 - Fixing device, image forming device, and separating member
In an embodiment, provided is a fixing device that includes: a fixing belt rotatable and endless; a belt holding member holding the fixing belt at each end part in an axial direction; a heat source heating the fixing belt; a nip forming member provided inside the fixing belt; an opposing...


06/27/13 - 20130164059 - Fixing device and image forming device
According to an embodiments, provided is a fixing device that includes: an endless fixing belt, heats and melts a toner image, and has flexibility; a stationary member that is set stationary on an inner peripheral surface side of the fixing belt and comes into contact under pressure to form a...


06/27/13 - 20130164058 - Fixing device and endless belt assembly
A fixing device includes an endless flexible belt, a stationary pad, a rotary pressure member, and a reinforcing member. The endless flexible belt is looped into a generally cylindrical configuration extending in an axial direction thereof for rotation in a rotational, circumferential direction thereof. The stationary pad is stationarily disposed...


06/27/13 - 20130164056 - Fixing device and image forming apparatus including the fixing device
A fixing device for fixing an image on a recording medium includes a rotatable endless fixing rotary member, a heating source which heats the fixing rotary member, an opposite rotary member in contact with the fixing rotary member, a nip forming member provided inside the fixing rotary member and in...


02/21/13 - 20130045032 - Belt device with mechanism capable of minimizing increase of rotation torque of endless belt and fixing device and image forming apparatus incorporating same
A belt device includes a flange assembly including a tube inserted into a loop formed by an endless belt at each lateral end of the endless belt in an axial direction thereof and a slip ring slidably contacting a groove mounted on the tube. An inner diameter ID 51 of...


09/20/12 - 20120237273 - Fixing device with resistance heating element capable of accurately generating heat and image forming apparatus with fixing device
In a fixing device, a heating element is extended along a fixing member at a location other than a nip on an inner circumferential surface side of the fixing member to generate heat. The fixing member contacts the heating element either indirectly via a gap of a prescribed size or...


09/06/12 - 20120224878 - Fixing device, image forming apparatus, and heater control method
A fixing device includes a fuser member, a heater, a thermometer, and a power supply controller. The fuser member is subjected to heating. The heater is adjacent to the fuser member to heat the fuser member. The thermometer is adjacent to the fuser member to detect an operational temperature of...


07/12/12 - 20120177423 - Fixing device and image forming apparatus
According to an embodiments, a fixing device includes: an endless fixing member; a heating unit that is provided inside an inner peripheral surface of the fixing member; and a nip forming unit that comes into press-contact with a rotationally driven pressing member with the fixing member interposed therebetween to form...


07/12/12 - 20120177420 - Fixing device and image forming apparatus incorporating same
A fixing device includes a thermal conductor disposed inside a flexible endless fixing belt formed into a loop and configured to conduct heat from a heater to the fixing belt. The thermal conductor includes a center heating portion heated by the heater and disposed at a center of the thermal...


07/12/12 - 20120177393 - Fixing device and method, and image forming apparatus incorporating same
A fixing device includes a heater to generate heat based on soft-start control. The heater is supplied with power using different power-turn-on-duty control patterns in accordance with power requirements and an operation mode of the fixing device....


07/12/12 - 20120177388 - Fixing device and image forming apparatus employing same
A fixing device comprises a rotatable endless flexible belt, a drive roller opposed to the rotatable endless flexible belt to contact and drive an outer circumferential surface of the rotatable endless flexible belt, and a nip formation device receiving pressure from the drive roller via the rotatable endless flexible belt...


06/21/12 - 20120155936 - Fixing device and image forming apparatus incorporating same
A fixing device includes a tubular belt holder, a rotatable, flexible fuser belt, a heater, a fuser pad, a pressure member, and a reinforcing member. The fuser belt is looped for rotation around the belt holder. The heater is disposed adjacent to the belt holder to heat the belt holder....


06/21/12 - 20120155935 - Fixing device and image forming apparatus
A fixing device, including a fixing member; a pressure member; a nip forming member; a reinforcing member; a heating member; and a flange member including a cylinder inserted in an inner circumference at an edge of the fixing member in an axial direction thereof and a flange fixed on a...


06/14/12 - 20120148303 - Belt assembly, fixing device, and image forming apparatus incorporating same
A fixing device includes a frame, a tubular belt holder, a rotatable, flexible fuser belt, a heater, a fuser pad, a pressure member, and a mounting attachment. The tubular belt holder extends in an axial direction thereof. The fuser belt is looped into a generally cylindrical configuration around the belt...


05/17/12 - 20120121305 - Fixing device and image forming apparatus incorporating same
A fixing device includes a tubular belt holder, a rotatable, flexible fuser belt, a heater, a fuser pad, and a pressure member. The belt holder extends in an axial direction. The fuser belt is looped around the belt holder to rotate in a circumferential direction of the belt holder. The...


05/17/12 - 20120121304 - Fixing device and image forming apparatus incorporating same
A fixing device includes a rotatable, flexible fuser belt, a heater, a fuser pad, and a pressure member. The fuser belt is looped into a generally cylindrical configuration. The heater is disposed adjacent to the fuser belt to heat the fuser belt. The fuser pad is disposed inside the loop...


05/17/12 - 20120121303 - Fixing device and image forming apparatus
A fixing device includes a rotatable fixing member in a form of an endless belt; a pressing member pressing the fixing member; a contacting member in contact with the pressing member; a holding member holding the contacting member in a pressing direction of the pressing member; a heating unit heating...


05/10/12 - 20120114345 - Fixing device and image forming apparatus incorporating same
A fixing device includes a fixing belt; a pressing rotary body disposed outside a loop formed by the fixing belt; a nip formation pad disposed inside the loop formed by the fixing belt and pressed against the pressing rotary body via the fixing belt to form a fixing nip between...


03/01/12 - 20120051774 - Image forming apparatus
An image forming apparatus includes a fixing device including a fixing member; a pressure member to press against the fixing member; and a halogen lamp to heat the fixing member, and a controller to control the halogen lamp. The controller controls an ON duty of the halogen lamp according to...


11/10/11 - 20110274453 - Fixing device and image forming apparatus incorporating same
A fixing device includes a metal thermal conductor provided inside a loop formed by a fixing rotary body to heat the fixing rotary body; a heater provided inside the metal thermal conductor to heat the metal thermal conductor; a pad support provided inside the metal thermal conductor; and a reflector...


09/22/11 - 20110229228 - Fixing device and image forming apparatus incorporating same
A fixing device includes a tubular belt holder, a rotatable flexible fuser belt, a contact member, a pressure member, and a heater. The tubular belt holder extends in an axial direction thereof. The fuser belt is looped into a generally cylindrical configuration around the belt holder. The tubular belt holder...


09/22/11 - 20110229227 - Fixing device and image forming apparatus incorporating same
A fixing device includes a tubular belt holder, a rotatable flexible fuser belt, a contact member, a pressure member, and a heater. The belt holder extends in an axial direction thereof. The fuser belt is looped around the belt holder extending in the axial direction. The contact member has a...


09/22/11 - 20110229226 - Fixing device and image forming apparatus incorporating same
A fixing device includes a fixing member formed into a loop and rotatable in a predetermined direction of rotation. A heating assembly faces a first region on an inner circumferential surface of the fixing member to heat the fixing member. The heating assembly is thermally deformed to contact and move...


09/22/11 - 20110229225 - Fixing device and image forming apparatus incorporating same
A fixing device includes an endless belt-shaped fixing member formed into a loop and rotatable in a predetermined direction of rotation, a pressing member contacting an outer circumferential surface of the fixing member, a heater support assembly provided inside the loop formed by the fixing member, and a laminated heater...


09/22/11 - 20110229181 - Fixing device and image forming apparatus incorporating same
A fixing device for fixing a toner image on a recording medium includes a pressing member provided outside a loop formed by a fixing member to press the fixing member against a nip formation member provided inside the loop formed by the fixing member. A heat generator support is provided...


09/15/11 - 20110222931 - Fixing device and image forming apparatus incorporating same
A fixing device includes a tubular, stationary metal pipe, a heater, a flexible fuser belt, a rotatable pressure member, a fuser pad, and a tubular pipe cover. The heater is disposed adjacent to the metal pipe to heat a circumference thereof. The metal pipe has multiple through-holes provided at least...


09/15/11 - 20110222930 - Fixing device, image forming apparatus incorporating same, and method of heating fixing member
A fixing device includes a support member fixedly provided inside a loop formed by a fixing member to support a nip formation member provided inside the loop formed by the fixing member. A biasing member is provided between the support member and a heater support that supports a laminated heater...


09/15/11 - 20110222929 - Fixing device and image forming apparatus including same
A fixing device includes a nip forming member disposed inside a fixing member and pressed against a pressing member via the fixing member to form a nip portion between the pressing member and the fixing member through which a recording medium bearing a toner image passes. A heat generator disposed...


09/15/11 - 20110222888 - Fixing device and image forming apparatus incorporating same
A fixing device includes an endless belt-shaped fixing member to rotate in a predetermined direction, formed in a loop, an inner circumferential face of which is coated with a lubricant; a pressing member contacting an outer circumferential surface of the fixing member, to press against the fixing member; a driver...


09/15/11 - 20110222875 - Fixing unit and image forming apparatus including same
A fixing unit removably installable in an image forming apparatus includes an endless fixing member; a metal member disposed in proximity to an inner surface of the fixing member; a nip formation member supported by the metal member to slidably contact the fixing member or oppose the fixing member via...


09/08/11 - 20110217095 - Fixing device and image forming apparatus incorporating same
A fixing device includes an endless belt-shaped fixing member; a pressing member; a contact member provided inside the loop formed by the fixing member and pressed against the pressing member via the fixing member to form a nip between the pressing member and the fixing member, a laminated heater facing...


09/08/11 - 20110217093 - Fixing device and image forming apparatus incorporating same
A fixing device includes a fixing member formed into a loop inside which a nip formation member, a core holder, a heater support, and a laminated heater are provided, and a pressing member provided outside the loop formed by the fixing member. The pressing member is pressed against the nip...


09/08/11 - 20110217056 - Fixing device and image forming apparatus including same
A fixing device includes a substantially cylindrical metal member, a heater, an endless, flexible fixing member, a rotary pressing member, a stationary member, a first temperature detector, and a second temperature detector. The first temperature detector is disposed upstream from a nip in a rotation direction of the fixing member...


09/01/11 - 20110211876 - Fixing device and image forming apparatus incorporating same
A fixing device includes a flexible, endless belt-shaped fixing member that rotates in a predetermined direction of rotation, a substantially cylindrical metal heat conductor provided inside a loop formed by the fixing member and facing an inner circumferential surface of the fixing member, a pressing member that presses the fixing...


08/18/11 - 20110200370 - Fixing device and image forming apparatus including same
A fixing device includes a substantially cylindrical metal member, a heater positioned to heat the metal member, an endless, flexible fixing member disposed rotatably around the metal member and heated by the metal member to heat and fix a toner image, a rotary pressing member disposed opposite the metal member...


08/18/11 - 20110200368 - Fixing device and image forming apparatus including same
A fixing device includes a contact member provided inside a fixing member and pressed against a pressing member via the fixing member to form a nip between the pressing member and the fixing member through which a recording medium bearing atoner image passes. A sheet heat generator provided in the...


08/11/11 - 20110194870 - Fixing device and image forming apparatus incorporating same
A fixing device includes an endless, fuser belt, a contact member, a pressure member, a heater, a first thermometer, a second thermometer, and a controller. The fuser belt is looped into a generally cylindrical configuration. The contact member extends inside the loop of endless belt. The pressure member extends with...


07/28/11 - 20110182638 - Heat conduction unit, fixing device, and image forming apparatus
A heat conduction unit includes a flexible endless belt, a heat conductor disposed in proximity to an inner circumferential face of the endless belt and having a cross-section substantially identical to a cross-section of the endless belt, a heat source that heats the heat conductor to heat the endless belt,...


07/14/11 - 20110170917 - Fixing device and image forming apparatus incorporating same
A fixing device includes a tubular, stationary metal pipe, a flexible fuser belt, a rotatable pressure member, a fuser pad, and a lubricant. The metal pipe is subjected to heating. The flexible fuser belt is looped for rotation around the metal pipe to transfer heat radially outward from the heated...


06/23/11 - 20110150518 - Fixing device and image forming apparatus
The fixing device using an electromagnetic induction heating (IH) method includes a fixing sleeve having a heating layer, a pressure roller to form a nip while contacting the fixing roller and rotate to drive the fixing sleeve, a temperature detector to detect a temperature on a circumference of the fixing...


Ricoh Company, Ltd., Ricoh Company, Limited

Archived*
(*May have duplicates - we are upgrading our archive.)

20120237273 - Fixing device with resistance heating element capable of accurately generating heat and image forming apparatus with fixing device


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The bibliographic references displayed about Kenji Ishii's patents are for a recent sample of Kenji Ishii's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Kenji Ishii filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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