Patents by Inventor Kiyoto Kojima
Kiyoto Kojima 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: 20180162146Abstract: A sheet conveying system includes: an upstream apparatus provided on an upstream side in a conveyance direction of a paper sheet; a downstream apparatus provided on a downstream side of the upstream apparatus; an upstream conveyor that conveys the paper sheet; an upstream driver that drives the upstream conveyor; a downstream conveyor that receives the paper sheet conveyed from the upstream conveyor, and conveys the paper sheet received from the upstream conveyor; a downstream driver that drives the downstream conveyor; an upstream controller that is connected to the upstream and downstream drivers; and a downstream controller that is connected to the downstream and upstream drivers, wherein the sheet conveying system switches control on the basis of sheet information between first control in which the upstream controller controls the upstream and downstream drivers and second control in which the downstream controller controls the downstream and upstream drivers.Type: ApplicationFiled: November 17, 2017Publication date: June 14, 2018Applicant: Konica Minolta, Inc.Inventors: Kiyoto KOJIMA, Takahiro YOKOYA, Eiji NISHIKAWA
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Patent number: 9994050Abstract: A sheet conveying system includes: an upstream apparatus provided on an upstream side in a conveyance direction of a paper sheet; a downstream apparatus provided on a downstream side of the upstream apparatus; an upstream conveyor that conveys the paper sheet; an upstream driver that drives the upstream conveyor; a downstream conveyor that receives the paper sheet conveyed from the upstream conveyor, and conveys the paper sheet received from the upstream conveyor; a downstream driver that drives the downstream conveyor; an upstream controller that is connected to the upstream and downstream drivers; and a downstream controller that is connected to the downstream and upstream drivers, wherein the sheet conveying system switches control on the basis of sheet information between first control in which the upstream controller controls the upstream and downstream drivers and second control in which the downstream controller controls the downstream and upstream drivers.Type: GrantFiled: November 17, 2017Date of Patent: June 12, 2018Assignee: Konica Minolta, Inc.Inventors: Kiyoto Kojima, Takahiro Yokoya, Eiji Nishikawa
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Patent number: 9703238Abstract: An image forming system includes: an image forming apparatus that forms an image on a sheet; one or more sheet carrying devices successively disposed on the downstream side of the image forming apparatus; and a control device that controls the image forming apparatus and the one or more sheet carrying devices based on a job that designates a page configuration containing a page order and sheet types, wherein the sheet carrying device includes a bypass conveyance path along which the sheet output from an upstream device is conveyed toward a downstream device, and a sheet tray unit that temporarily stores the sheet output from the upstream device and discharges the sheet toward the bypass conveyance path, and the control device divides the job into sheet types and determines a printing order of the divided sheet types and sheet types to be stored in the sheet carrying device.Type: GrantFiled: February 5, 2016Date of Patent: July 11, 2017Assignee: KONICA MINOLTA, INC.Inventors: Kenji Izumiya, Kiyoto Kojima, Satoshi Ogata, Hirokatsu Kodama
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Publication number: 20160259278Abstract: An image forming system includes: an image forming apparatus that forms an image on a sheet; one or more sheet carrying devices successively disposed on the downstream side of the image forming apparatus; and a control device that controls the image forming apparatus and the one or more sheet carrying devices based on a job that designates a page configuration containing a page order and sheet types, wherein the sheet carrying device includes a bypass conveyance path along which the sheet output from an upstream device is conveyed toward a downstream device, and a sheet tray unit that temporarily stores the sheet output from the upstream device and discharges the sheet toward the bypass conveyance path, and the control device divides the job into sheet types and determines a printing order of the divided sheet types and sheet types to be stored in the sheet carrying device.Type: ApplicationFiled: February 5, 2016Publication date: September 8, 2016Inventors: Kenji IZUMIYA, Kiyoto KOJIMA, Satoshi OGATA, Hirokatsu KODAMA
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Patent number: 9229387Abstract: A fixing apparatus included in an image forming apparatus includes a fixing heater that performs heat fixing, a control unit that controls the fixing heater based on control patterns, a temperature sensor that detects temperature of the fixing heater, and a voltage detection unit that detects a voltage that is applied to the fixing heater. In each control pattern, turn-on period of the fixing heater and turn-off period of the fixing heater are set according to a control cycle of a half cycle duty control. The control unit controls the switching unit to turn on or off the fixing heater using a combination of the control patterns each satisfying a standard for preventing a flicker during each control period of time that is integral multiplication of the control cycle according to the temperature of the fixing heater and the voltage value allied to the fixing heater.Type: GrantFiled: March 16, 2015Date of Patent: January 5, 2016Assignee: Konica Minolta, Inc.Inventors: Kosuke Sasaki, Kenji Tamaki, Masayuki Watanabe, Kiyoto Kojima, Kenji Izumiya, Hiroshi Oyama
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Publication number: 20150268593Abstract: A fixing apparatus included in an image forming apparatus includes a fixing heater that performs heat fixing, a control unit that controls the fixing heater based on control patterns, a temperature sensor that detects temperature of the fixing heater, and a voltage detection unit that detects a voltage that is applied to the fixing heater. In each control pattern, turn-on period of the fixing heater and turn-off period of the fixing heater are set according to a control cycle of a half cycle duty control. The control unit controls the switching unit to turn on or off the fixing heater using a combination of the control patterns each satisfying a standard for preventing a flicker during each control period of time that is integral multiplication of the control cycle according to the temperature of the fixing heater and the voltage value allied to the fixing heater.Type: ApplicationFiled: March 16, 2015Publication date: September 24, 2015Inventors: Kosuke SASAKI, Kenji TAMAKI, Masayuki WATANABE, Kiyoto KOJIMA, Kenji IZUMIYA, Hiroshi OYAMA
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Patent number: 8955839Abstract: A paper feed apparatus is capable of correcting the skew of a sheet irrespective of a differential conveyance distance. The paper feed apparatus is provided with a first large volume paper feed apparatus 100A having a control unit 130 which performs first correction control to correct the skew of a sheet by controlling a first conveyance unit 110 and forming a loop of the sheet P before a paper stop rollers 110d, and also performs second correction control to correct the skew of a sheet by controlling a second conveyance unit 120 and forming a loop of the sheet before a paper stop rollers 110d. In this case, the control unit 130 controls the first conveyance unit 110 and the second conveyance unit 120 in order that the skew correcting ability of the second correction control becomes greater than the skew correcting ability of the first correction control.Type: GrantFiled: November 19, 2013Date of Patent: February 17, 2015Assignee: Konica Minolta, Inc.Inventors: Hiroshi Oyama, Kenji Izumiya, Kiyoto Kojima, Atsushi Takahashi
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Patent number: 8764003Abstract: When conveying an envelope, a posture of the envelope is corrected by hitting a closed portion of the envelope, which is opposite side of an opened portion of the envelope, against a nip portion between upper and lower rollers of the pre-registration rollers and the envelope is then conveyed with the envelope being nipped by the upper and lower rollers of the pre-registration rollers. The upper and lower rollers of the pre-registration rollers nip the envelope to remove air from the envelope. When setting an envelope mode to control a conveying speed of the envelope based on a coverage rate of an image to be formed on the envelope, the conveying speed of the envelope is controlled by adjusting a rotation speed of the registration rollers based on the coverage rate of the set envelope mode.Type: GrantFiled: March 28, 2013Date of Patent: July 1, 2014Assignee: Konica Minolta Business Technologies, Icn.Inventors: Hiroshi Oyama, Kenji Izumiya, Kiyoto Kojima, Atsushi Takahashi
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Publication number: 20140138899Abstract: A paper feed apparatus is capable of correcting the skew of a sheet irrespective of a differential conveyance distance. The paper feed apparatus is provided with a first Large volume paper feed apparatus 100A having a control unit 130 which performs first correction control to correct the skew of a sheet by controlling a first conveyance unit 110 and forming a loop of the sheet P before a paper stop rollers 110d, and also performs second correction control to correct the skew of a sheet by controlling a second conveyance unit 120 and forming a loop of the sheet before a paper stop rollers 110d. In this case, the control unit 130 controls the first conveyance unit 110 and the second conveyance unit 120 in order that the skew correcting ability of the second correction control becomes greater than the skew correcting ability of the first correction control.Type: ApplicationFiled: November 19, 2013Publication date: May 22, 2014Applicant: Konica Minolta , Inc.Inventors: Hiroshi OYAMA, Kenji IZUMIYA, Kiyoto KOJIMA, Atsushi TAKAHASHI
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Publication number: 20130264763Abstract: When conveying an envelope, a posture of the envelope is corrected by hitting a closed portion of the envelope, which is opposite side of an opened portion of the envelope, against a nip portion between upper and lower rollers of the pre-registration rollers and the envelope is then conveyed with the envelope being nipped by the upper and lower rollers of the pre-registration, rollers. The upper and lower rollers of the pre-registration rollers nip the envelope to remove air from the envelope. When setting an envelope mode to control a conveying speed of the envelope based on a coverage rate of an image to be formed on the envelope, the conveying speed of the envelope is controlled by adjusting a rotation speed of the registration rollers based on the coverage rate of the set envelope mode.Type: ApplicationFiled: March 28, 2013Publication date: October 10, 2013Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Hiroshi OYAMA, Kenji IZUMIYA, Kiyoto KOJIMA, Atsushi TAKAHASHI
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Patent number: 8007111Abstract: A projector includes: an image pickup unit which obtains an image of a subject; an image signal processing unit which cuts an image corresponding to a projection display area of the subject contained in an image obtained by the image pickup unit, and processes an image signal such that the cut image has a predetermined size to produce a projection image signal; and a projection unit which produces an image according to the image signal produced by the image signal processing unit and projects the image.Type: GrantFiled: October 9, 2008Date of Patent: August 30, 2011Assignee: Seiko Epson CorporationInventor: Kiyoto Kojima
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Publication number: 20090102987Abstract: A projector includes: an image pickup unit which obtains an image of a subject; an image signal processing unit which cuts an image corresponding to a projection display area of the subject contained in an image obtained by the image pickup unit, and processes an image signal such that the cut image has a predetermined size to produce a projection image signal; and a projection unit which produces an image according to the image signal produced by the image signal processing unit and projects the image.Type: ApplicationFiled: October 9, 2008Publication date: April 23, 2009Applicant: Seiko Epson CorporationInventor: Kiyoto Kojima
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Publication number: 20080211961Abstract: A sequential scanning conversion device includes: N (N is 3 or larger integer) line memories which store each input image data of successive N main scanning lines contained in input image data for interlaced scanning; an input/output control unit which sequentially selects one of the N line memories and writes the input image data to the selected line memory, and also reads (N?1) input image data written to the other (N?1) line memories in such timing at least a part of which overlaps with the writing timing; and an image processing unit which produces output image data for sequential scanning corresponding to M (M is one or larger integer) main scanning lines by applying predetermined process established in advance to the (N?1) input image data.Type: ApplicationFiled: February 26, 2008Publication date: September 4, 2008Applicant: SEIKO EPSON CORPORATIONInventor: Kiyoto KOJIMA