Patents by Inventor Norikazu Ochiai
Norikazu Ochiai 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: 20210195041Abstract: An image forming apparatus includes a voice input interface, a controller, and a communication interface. The voice input unit is configured to receive a voice in the vicinity of the image forming apparatus as an input and output a voice signal indicating the voice. The controller is configured to record the voice signal output during a predetermined first period as voice data. The controller is configured to acquire related data acquired in a second period determined according to the first period. The communication interface is configured to transmit the related data and the voice data to another apparatus.Type: ApplicationFiled: June 18, 2020Publication date: June 24, 2021Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventors: Norikazu OCHIAI, Tomoaki IDE
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Patent number: 8688011Abstract: An image forming apparatus includes: a photoconductive drum; a mixer which stirs a developer; and a developing roller which has plural magnets to supply the stirred developer to the photoconductive drum, and a separation pole that is a magnet arranged opposite the photoconductive drum in relation to a rotational center axis and separating the developer supplied to the photoconductive drum, and which is arranged in a way that a vertical first tangential line on the separation pole side is located outward to the separation pole side from an outer circumference of the mixer.Type: GrantFiled: May 26, 2011Date of Patent: April 1, 2014Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventor: Norikazu Ochiai
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Patent number: 8358427Abstract: An image forming apparatus management system of an embodiment of the invention includes a first storage unit to store a document, an input unit to input print document data as use setting of the document after printing, a second storage unit to store the print document data inputted by the input unit, a print unit to print the document, and a control unit to manage the print document based on the print document data stored in the second storage unit.Type: GrantFiled: February 15, 2007Date of Patent: January 22, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Yoshiyuki Hirahara, Kazunobu Takahashi, Yasunari Miyazaki, Norikazu Ochiai
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Publication number: 20120008987Abstract: An image forming apparatus includes: a photoconductive drum; a mixer which stirs a developer; and a developing roller which has plural magnets to supply the stirred developer to the photoconductive drum, and a separation pole that is a magnet arranged opposite the photoconductive drum in relation to a rotational center axis and separating the developer supplied to the photoconductive drum, and which is arranged in a way that a vertical first tangential line on the separation pole side is located outward to the separation pole side from an outer circumference of the mixer.Type: ApplicationFiled: May 26, 2011Publication date: January 12, 2012Applicants: TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBAInventor: Norikazu Ochiai
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Publication number: 20110262157Abstract: According to one embodiment of the present invention, an image forming apparatus includes: an image formation unit; an image formation frequency count unit; a first control unit; a target contrast potential determination unit, and a second control unit. The image formation unit forms an image pertaining to a print job input from an external on an image carrier. The image formation frequency count unit counts an image formation frequency of the image in the image formation unit. The first control unit controls the image formation unit, and executes a first image stabilization mode for adjusting a development bias voltage on the basis of a concentration of a pattern image formed on the image carrier.Type: ApplicationFiled: March 15, 2011Publication date: October 27, 2011Applicants: TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBAInventor: Norikazu Ochiai
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Patent number: 7995955Abstract: In order to provide an image forming apparatus capable of maintaining the image quality by making smooth flowability of a surplus developer, which is discharged according to supply of a new developer (toner and carrier), toward a collection box, there are provided a stirring screw that electrify toner by stirring the toner together with a carrier; a casing that supports the stirring screw and stores a developer in which the toner and the carrier are mixed; a inlet used to supply the developer to the casing; a guide that guides the surplus developer discharged from the casing downward; and a reciprocating member that moves on a flow surface of the guide along which the surplus developer flows.Type: GrantFiled: July 8, 2009Date of Patent: August 9, 2011Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Takao Izumi, Hiroshi Murata, Norikazu Ochiai
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Patent number: 7970322Abstract: A developing roller includes a cylindrical sleeve that holds developer on a peripheral surface thereof, and a magnet roller being provided in the sleeve and having a plurality of magnetic poles. The sleeve includes a plurality of micro-recesses formed on the peripheral surface thereof, and the plurality of micro-recesses are arranged dispersedly in the axial direction and the circumferential direction of the sleeve. The densities of the micro-recesses in both end portions of the sleeve are larger than the density of the micro-recesses in a central portion of the sleeve.Type: GrantFiled: December 2, 2008Date of Patent: June 28, 2011Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventor: Norikazu Ochiai
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Patent number: 7965964Abstract: A developing roller according to the invention includes a columnar magnet roller, and a cylindrical sleeve that houses the magnet roller. A plurality of fragmented micro recesses is formed on the surface of the sleeve. The micro recesses are arranged dispersively both in an axial direction and in a circumferential direction of the sleeve.Type: GrantFiled: April 3, 2008Date of Patent: June 21, 2011Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Norikazu Ochiai, Mitsuhisa Kato
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Publication number: 20110142474Abstract: According to one embodiment, an image forming apparatus includes an image forming unit configured to form a toner image on a first surface of a medium, a fixing unit configured to have a heating member which heats the first surface of the medium, and a pressurizing member which is pressed in contact with the heating member via the medium to heat a second surface of the medium, and a supply unit configured to supply a used medium to the image forming unit, a control unit configured to, when the used medium is supplied from the supply unit, control a fixing setting temperature of the pressurizing member to a temperature equal to or lower than a temperature for fixing on the unused medium, and control a fixing temperature of the heating member to a temperature equal to or higher than a temperature for fixing on the unused medium.Type: ApplicationFiled: December 14, 2010Publication date: June 16, 2011Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Yasunari Miyazaki, Yukio Futamata, Norikazu Ochiai, Yoshiaki Okano, Setsuo Takada
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Publication number: 20100266296Abstract: An image forming apparatus has a photoconductive drum which carries an electrostatic latent image, a developer supply unit which supplies a developer to the photoconductive drum, an image carrier which carries a developer image, and a density sensor which measures a density of a test print on the image carrier. The image forming apparatus carries out a second image quality maintenance operation for lowering a contrast potential when the density of the test print is higher than a predetermined value. When the test print is still dense even if the contrast potential reaches a lower limit value, the image forming apparatus carries out a first image quality maintenance operation for discharging the developer, then supplying a fresh developer to the developer supply unit, and causing the developer to be stirred and thus charged.Type: ApplicationFiled: April 15, 2010Publication date: October 21, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Norikazu Ochiai
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Publication number: 20100054765Abstract: A developing device includes a developer tank that contains a developer including a toner and a carrier, a developing agent supplier that develops a latent image by using the toner contained in the developer tank, a discharge port that is provided in a side surface of the developer tank and discharges the developer, and a discharge assisting member that protrudes from a downstream side of the discharge port in a direction of flow of the developer in the developer tank and in a direction crossing the direction of the flow of the developer.Type: ApplicationFiled: August 26, 2009Publication date: March 4, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Hiroshi Murata, Takao Izumi, Norikazu Ochiai
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Publication number: 20100008701Abstract: In order to provide an image forming apparatus capable of maintaining the image quality by making smooth flowability of a surplus developer, which is discharged according to supply of a new developer (toner and carrier), toward a collection box, there are provided a stirring screw that electrify toner by stirring the toner together with a carrier; a casing that supports the stirring screw and stores a developer in which the toner and the carrier are mixed; a inlet used to supply the developer to the casing; a guide that guides the surplus developer discharged from the casing downward; and a reciprocating member that moves on a flow surface of the guide along which the surplus developer flows.Type: ApplicationFiled: July 8, 2009Publication date: January 14, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Takao Izumi, Hiroshi Murata, Norikazu Ochiai
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Patent number: 7548701Abstract: For a sheet paper used for forming a toner image or ink image, a surface layer that can be stripped is stacked on a plastic layer. A sliding member is caused to slide in contact with the plastic layer of the used sheet paper on which a toner image or ink image has been formed, and the toner image or ink image is stripped off the plastic layer together with the surface layer. A new surface layer is formed on the plastic layer to regenerate the sheet paper, and the sheet paper is thus made reusable.Type: GrantFiled: January 24, 2007Date of Patent: June 16, 2009Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventor: Norikazu Ochiai
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Publication number: 20090148195Abstract: A developing roller includes a cylindrical sleeve that holds developer on a peripheral surface thereof, and a magnet roller being provided in the sleeve and having a plurality of magnetic poles. The sleeve includes a plurality of micro-recesses formed on the peripheral surface thereof, and the plurality of micro-recesses are arranged dispersedly in the axial direction and the circumferential direction of the sleeve. The densities of the micro-recesses in both end portions of the sleeve are larger than the density of the micro-recesses in a central portion of the sleeve.Type: ApplicationFiled: December 2, 2008Publication date: June 11, 2009Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Norikazu Ochiai
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Publication number: 20090129796Abstract: There are provided a control unit which controls image quality maintenance, a detection unit which detects a print command of image data, a calculation unit which calculates a print ratio of the image data when the print command for printing at least a predetermined number of sheets is detected, and a toner specific concentration control unit which sets toner specific concentration for each print of the plural sheets on the basis of the print ratio calculated by the calculation unit.Type: ApplicationFiled: November 12, 2008Publication date: May 21, 2009Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Norikazu Ochiai
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Publication number: 20090080916Abstract: In a method of checking a trouble point in a xerographic copying apparatus of the invention, a sequence code is selected from a plurality of sequence codes to distinguish a plurality of sequences to stop an operation of the xerographic copying apparatus in any one process of a plurality of print processing processes for print output of a sheet, an operation of a photoconductor in a state where toner is attached is stopped in any one process among the plurality of print processing processes in accordance with the sequence corresponding to the selected sequence code, and any one trouble point is checked, and therefore, the point where a poor image is generated is suitably grasped.Type: ApplicationFiled: February 12, 2007Publication date: March 26, 2009Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Norikazu Ochiai
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Publication number: 20090052951Abstract: A developing roller according to the invention includes a columnar magnet roller, and a cylindrical sleeve that houses the magnet roller. A plurality of fragmented micro recesses is formed on the surface of the sleeve. The micro recesses are arranged dispersively both in an axial direction and in a circumferential direction of the sleeve.Type: ApplicationFiled: April 3, 2008Publication date: February 26, 2009Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Norikazu Ochiai, Mitsuhisa Kato
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Publication number: 20080198421Abstract: An image forming apparatus management system of an embodiment of the invention includes a first storage unit to store a document, an input unit to input print document data as use setting of the document after printing, a second storage unit to store the print document data inputted by the input unit, a print unit to print the document, and a control unit to manage the print document based on the print document data stored in the second storage unit.Type: ApplicationFiled: February 15, 2007Publication date: August 21, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventors: Yoshiyuki Hirahara, Kazunobu Takahashi, Yasunari Miyazaki, Norikazu Ochiai
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Patent number: 7409168Abstract: Provided is a development technique of supplying a developing bias voltage having DC and AC components to a developing roller thereby to supply a developer to a photosensitive surface of a photosensitive material, which can contribute to improvement of the image quality of an image to be developed. The image forming apparatus, includes: a developing roller for supplying a developer to a photosensitive surface of a photosensitive material carrying an electrostatic latent image thereby to make the electrostatic latent image visible; and a voltage control unit for supplying a combination of a predetermined DC voltage and a predetermined AC voltage as a developing bias voltage to the developing roller as well as controlling the predetermined AC voltage so that a relation between a circumferential speed N of the developing roller and a frequency f of the AC voltage is as follows: ?0.097×N+61.17?(f/N)??0.093×N+67.33.Type: GrantFiled: March 15, 2006Date of Patent: August 5, 2008Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventor: Norikazu Ochiai
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Publication number: 20080175604Abstract: For a sheet paper used for forming a toner image or ink image, a surface layer that can be stripped is stacked on a plastic layer. A sliding member is caused to slide in contact with the plastic layer of the used sheet paper on which a toner image or ink image has been formed, and the toner image or ink image is stripped off the plastic layer together with the surface layer. Anew surface layer is formed on the plastic layer to regenerate the sheet paper, and the sheet paper is thus made reusable.Type: ApplicationFiled: January 24, 2007Publication date: July 24, 2008Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Norikazu Ochiai