Patents by Inventor Yoshinori Tsueda
Yoshinori Tsueda 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: 20080131159Abstract: In a drive detection device for a fixing device according to an embodiment of the present invention, a non-paper passing area of a heat roller is formed by a surface where a metal conductive layer is exposed and a surface where a silicon rubber layer is exposed. The drive detection device has an infrared temperature sensor that detects the temperature of the non-paper passing area. When a detection result of the infrared temperature sensor is fluctuated a fixed amount or more in a predetermined time, the drive detection device determines that the heat roller is rotating. Otherwise, the drive detection device determines that the heat roller is not rotating.Type: ApplicationFiled: November 29, 2007Publication date: June 5, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Toshihiro Sone, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Tetsuo Kitamura, Hiroshi Nakayama, Yohei Doi, Kazuhiko Kikuchi, Masanori Takai, Toyoyasu Kusaka
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Publication number: 20080124149Abstract: A fixing apparatus according to the present invention comprises a heat roller 2 which comprises an elastic member 2b having an outer diameter which is different from another one in an axial direction, and an conductive layer 2c provided outside of the elastic member 2b, wherein a maximum outer diameter and a minimum outer diameter of the elastic member 2b has a difference therebetween ranging from 0.2 mm to 3.0 mm.Type: ApplicationFiled: January 30, 2008Publication date: May 29, 2008Inventors: Yoshinori TSUEDA, Satoshi KINOUCHI, Osamu TAKAGI, Toshihiro SONE
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Publication number: 20080124109Abstract: A heat roller of a fixing apparatus according to an embodiment of the invention has a slidable metal belt on an outer side of an elastic roller. The width of the metal belt is made larger than that of the elastic roller. Flanges, each of which regulates a sliding movement of the metal belt by being in contact with an edge of the metal belt, are provided on both sides of a press roller opposite the metal belt.Type: ApplicationFiled: November 19, 2007Publication date: May 29, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Toshihiro Sone, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Tetsuo Kitamura, Hiroshi Nakayama, Yohei Doi, Kazuhiko Kikuchi, Masanori Takai, Toyoyasu Kusaka
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Publication number: 20080118265Abstract: A fixing apparatus according to an embodiment of the present invention controls, using a CPU and a temperature comparator, an inverter circuit that supplies electric power to an induction heating coil and performs temperature control for a heat roller. The CPU adjusts and controls a power value supplied by the inverter circuit. When the adjustment and control of the power value by the CPU is late, the inverter circuit is ON-OFF controlled by the temperature comparator.Type: ApplicationFiled: November 19, 2007Publication date: May 22, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Satoshi Kinouchi, Osamu Takagi, Yoshinori Tsueda, Tetsuo Kitamura, Hiroshi Nakayama, Yohei Doi, Kazuhiko Kikuchi, Masanori Takai, Toyoyasu Kusaka, Toshihiro Sone
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Publication number: 20080118282Abstract: A heat roller of a fixing apparatus according to an embodiment of the invention has a slidable metal belt on an outer side of an elastic roller. At the room temperature, the outer diameter of the elastic roller is smaller than the inner diameter of the metal belt. On the other hand, when the elastic roller is thermally expanded, the metal belt and the elastic roller fit onto each other in a state in which the metal belt fastens the elastic roller.Type: ApplicationFiled: November 19, 2007Publication date: May 22, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Tetsuo Kitamura, Hiroshi Nakayama, Yohei Doi, Kazuhiko Kikuchi, Masanori Takai, Toyoyasu Kusaka, Toshihiro Sone
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Publication number: 20080118266Abstract: A fixing device according to an embodiment of the present invention heats a metal conductive layer of a heat roller using an induction current generating coil. In order to supplement a heat capacity of the heat roller, a press roller having a large heat capacity is heated by a halogen lamp. During a start of activation of an image forming apparatus, when a printer control circuit is started, the supply of electric power to the halogen lamp is started before warming-up is started.Type: ApplicationFiled: November 19, 2007Publication date: May 22, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Hiroshi Nakayama, Yohei Doi, Tetsuo Kitamura, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Kazuhiko Kikuchi, Masanori Takai, Toyoyasu Kusaka, Toshihiro Sone
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Publication number: 20080118284Abstract: There is provided a technique in which in a roller apparatus including a roller constructed by inserting a core member in a cylindrical elastic body, the occurrence of disadvantages due to the reduction in bonding strength between the elastic body and the core member is suppressed by a simple structure. In the roller apparatus including a core member that rotates around a rotation axis, and a cylindrical elastic body in which the core member is inserted, at least a boundary portion between the elastic body at an end position in a direction of the rotation axis P and the core member is coated with a coating part.Type: ApplicationFiled: November 20, 2007Publication date: May 22, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Satoshi Kinouchi, Yoshinori Tsueda, Osamu Takagi, Toshihiro Sone
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Publication number: 20080118262Abstract: In a fixing apparatus of an embodiment of the invention, a heat roller forwardly and reversely rotated by a drive motor capable of forwardly and reversely rotating is heated by an induction heating coil also when it is reversely rotated. Further, the roller control temperature of the heat roller by a control system is adjusted according to a time of forward rotation of the heat roller and a time of reverse rotation, or a time when the heat roller and a press roller are separated from each other and a time when they are in contact with each other. Besides, after a specified time has passed since an instruction of reverse rotation or forward rotation by a drive signal, output of the induction heating coil is tuned on.Type: ApplicationFiled: November 19, 2007Publication date: May 22, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Satoshi Kinouchi, Osamu Takagi, Yoshinori Tsueda, Tetsuo Kitamura, Hiroshi Nakayama, Yohei Doi, Kazuhiko Kikuchi, Masanori Takai, Toyoyasu Kusaka, Toshihiro Sone
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Publication number: 20080118263Abstract: A fixing device according to an embodiment of the present invention includes a microcomputer that exclusively performs temperature control for the fixing device. The microcomputer periodically calculates electric power that can be supplied to the fixing device. The microcomputer detects the temperature of the fixing device and the temperature in a printer unit and feedback-controls electric power supplied to the fixing device.Type: ApplicationFiled: November 19, 2007Publication date: May 22, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Hiroshi Nakayama, Yohei Doi, Tetsuo Kitamura, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Kazuhiko Kikuchi, Masanori Takai, Toyoyasu Kusaka, Toshihiro Sone
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Publication number: 20080118283Abstract: In a heat roller of a fixing apparatus according to an embodiment of the present invention, a sleeve is slidable with respect to a supporting roller. Flanges that regulate the sleeve have smooth surfaces, are arranged at gaps apart from a foamed rubber layer of the supporting roller, and freely rotate with respect to the supporting roller. Edges at both ends of the foamed rubber layer of the supporting roller are formed in an R shape and set shorter than the length of a body of the press roller. The sleeve has markings for detecting a state of the heat roller.Type: ApplicationFiled: November 19, 2007Publication date: May 22, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Yoshinori Tsueda, Osamu Takagi, Satoshi Kinouchi, Tetsuo Kitamura, Hiroshi Nakayama, Yohei Doi, Kazuhiko Kikuchi, Masanori Takai, Toyoyasu Kusaka, Toshihiro Sone
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Publication number: 20080118260Abstract: An image formation apparatus is provided for supporting adjustment of the distance between a heat roller and a heating unit for heating the heat roller, thereby supporting adjustment of supplied power to the heating unit. The image formation apparatus includes a heat roller for clamping paper with a toner image formed thereon with a pressurization roller; a heating unit being placed facing the heat roller for heating the heat roller; a power supply unit for supplying power to the heating unit; an acquisition unit for acquiring a power value based on the power supplied from the power supply unit; a comparison unit for making a comparison between the power value acquired by the acquisition unit and a predetermined power value; and a display unit for displaying information concerning adjustment of a distance from the heat roller to the heating unit based on the comparison result of the comparison unit.Type: ApplicationFiled: November 20, 2007Publication date: May 22, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Yohei Doi, Hiroshi Nakayama, Tetsuo Kitamura, Masanori Takai, Kazuhiko Kikuchi, Toyoyasu Kusaka, Satoshi Kinouchi, Yoshinori Tsueda, Osamu Takagi, Toshihiro Sone
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Publication number: 20080107438Abstract: A fixing apparatus of an image forming apparatus of the present invention, in arrival timing of a temperature falling area of a heat roller passing a nip at opposite position ? of an induction heating coil from temperature detection position ? by an infrared temperature sensor around the heat roller, according to detection results by the infrared temperature sensor, controls an output value of the induction heating coil under control of an inverter circuit, heats and returns the heat roller in real time to a fixable temperature, and realizes energy conversation. At the time of arrival at the nip, the heat controller is always set to a fixed fixable temperature, thus in a fixed image, a high image quality free of ripple marks can be obtained.Type: ApplicationFiled: January 8, 2008Publication date: May 8, 2008Inventors: Satoshi Kinouchi, Osamu Takagi, Yoshinori Tsueda, Toshihiro Sone
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Patent number: 7369801Abstract: An image forming apparatus according to the present invention includes a heating roller 2 fixed at a predetermined position, a pressurizing roller 3 press-fitted to the heating roller 2 by a pressurizing mechanism 4 to be movable, and a hardness change detecting mechanism 310 which becomes electrically conductive when the pressurizing roller 3 moves due to thermal expansion of the heating roller 2, and which detects a hardness change of the heating roller 2.Type: GrantFiled: March 16, 2005Date of Patent: May 6, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Yoshinori Tsueda, Satoshi Kinouchi, Osamu Takagi, Toshihiro Sone
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Patent number: 7358461Abstract: According to a mode of the present invention, there is disclosed a fixing apparatus comprising a non-contact temperature detection section which detects a temperature by infrared rays radiated from a heating member, to made uniform a surface temperature of the heating member in an axial direction and a rotation direction based on first temperature information for detecting a temperature difference of the axial direction of the heating member and second temperature information for detecting the temperature difference of the rotation direction of the heating member.Type: GrantFiled: December 28, 2005Date of Patent: April 15, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Toshihiro Sone, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda
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Patent number: 7346288Abstract: The present invention relates to a fixing apparatus which radiates rays to a detection object and which detects the rays returned from the detection object to obtain a temperature signal. The apparatus specifies a radiant ratio of the surface of the detection object using at least one of accumulated image forming times, detection position, and radiation deterioration, corrects the detected temperature signal based on the specified radiant ratio of the surface of the detection object to produce temperature data, and controls a power to be supplied to a heating mechanism which raises temperature of the detection object based on the produced temperature data.Type: GrantFiled: September 21, 2004Date of Patent: March 18, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Toshihiro Sone, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda
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Patent number: 7340192Abstract: A fixing apparatus of an image forming apparatus of the present invention, in arrival timing of a temperature falling area of a heat roller passing a nip at opposite position ? of an induction heating coil from temperature detection position ? by an infrared temperature sensor around the heat roller, according to detection results by the infrared temperature sensor, controls an output value of the induction heating coil under control of an inverter circuit, heats and returns the heat roller in real time to a fixable temperature, and realizes energy conversation. At the time of arrival at the nip, the heat controller is always set to a fixed fixable temperature, thus in a fixed image, a high image quality free of ripple marks can be obtained.Type: GrantFiled: March 16, 2005Date of Patent: March 4, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki KaishaInventors: Satoshi Kinouchi, Osamu Takagi, Yoshinori Tsueda, Toshihiro Sone
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Patent number: 7340210Abstract: A fixing apparatus is provided with a heat roller 2 which includes an elastic member 2b having an outer diameter which is different from another one in an axial direction, and a conductive layer 2c provided outside of the elastic member 2b, wherein a maximum outer diameter and a minimum outer diameter of the elastic member 2b has a difference therebetween ranging from 0.2 mm to 3.0 mm.Type: GrantFiled: March 17, 2005Date of Patent: March 4, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Yoshinori Tsueda, Satoshi Kinouchi, Osamu Takagi, Toshihiro Sone
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Patent number: 7330689Abstract: A fixing apparatus includes a fixing device configured to, by allowing a sheet having a developing agent image on it to pass between a heating roller and a pressing roller set in contact with the heating roller, fix the developing agent image in which at least one of the heating roller and pressing roller is configured to have an inner elastic layer and a conductive layer formed on a surface side of the elastic layer and the elastic layer is bonded to the conductive layer by a heat-resistant adhesive having a heat-resistant temperature of over 200° C.Type: GrantFiled: May 17, 2005Date of Patent: February 12, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Yoshinori Tsueda, Satoshi Kinouchi, Osamu Takagi, Toshihiro Sone
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Publication number: 20080013997Abstract: A fixing apparatus according to one aspect of the present invention includes a non-contact temperature detecting element 81 allocated in non-contact with a heat roller, the sensing element detecting a temperature of the heat roller. The non-contact temperature sensing section 81 includes a thermopile P which detects a target temperature Pt of a heat roller 2, a temperature element CPU 100 which estimates an ambient temperature at the periphery of the thermopile P and computes an estimated ambient temperature SQt, and a thermister Q which detects an ambient temperature Qt at the periphery of the thermopile and outputs the ambient temperature Qt at an output voltage of a predetermined rate with respect to a total output voltage value corresponding to the estimated ambient temperature SQt.Type: ApplicationFiled: July 16, 2007Publication date: January 17, 2008Inventors: Toshihiro SONE, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda
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Publication number: 20070297838Abstract: A fixing apparatus according to the present invention ensures a nip width larger than a certain value by a heating roller which has a thin film metal conductive layer, and a foamed rubber layer which is bonded to the end part of the metal conductive layer, formed with a gap in a center part, and not bonded to the metal conductive layer.Type: ApplicationFiled: August 7, 2007Publication date: December 27, 2007Inventors: Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Toshihiro Sone