Patents by Inventor Tadashi Okanishi
Tadashi Okanishi 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).
-
Patent number: 11199797Abstract: A fixing unit includes a changing portion configured to change a state of a first rotary member and a second rotary member between a first pressurization state and a second pressurization state. A control portion is configured to control the driving source and the changing unit and capable of performing first control that causes the driving source to rotate the first rotary member and then stop the first rotary member, while continuing the first pressurization state from a last image forming operation, and second control that causes the changing portion to change the state of the first rotary member and the second rotary member from the first pressurization state to the second pressurization state.Type: GrantFiled: September 11, 2020Date of Patent: December 14, 2021Assignee: Canon Kabushiki KaishaInventors: Daisuke Usami, Naoto Tsuchihashi, Tadashi Okanishi
-
Patent number: 11067951Abstract: An image forming apparatus, which is configured to execute calibration for controlling an image forming condition, includes a detection unit configured to detect an environmental state in which the image forming apparatus is installed; a prediction unit configured to predict, based on a plurality of detection results detected by the detection unit in a first period, a change in the environmental state in a second period after the first period; and a setting unit configured to set a timing of executing the calibration in the second period based on the change in the environmental state predicted by the prediction unit.Type: GrantFiled: June 2, 2020Date of Patent: July 20, 2021Assignee: Canon Kabushiki KaishaInventor: Tadashi Okanishi
-
Publication number: 20210088953Abstract: A fixing unit includes a changing portion configured to change a state of a first rotary member and a second rotary member between a first pressurization state and a second pressurization state. A control portion is configured to control the driving source and the changing unit and capable of performing first control that causes the driving source to rotate the first rotary member and then stop the first rotary member, while continuing the first pressurization state from a last image forming operation, and second control that causes the changing portion to change the state of the first rotary member and the second rotary member from the first pressurization state to the second pressurization state.Type: ApplicationFiled: September 11, 2020Publication date: March 25, 2021Inventors: Daisuke Usami, Naoto Tsuchihashi, Tadashi Okanishi
-
Publication number: 20200379394Abstract: An image forming apparatus, which is configured to execute calibration for controlling an image forming condition, the image forming apparatus including: a first detection unit configured to detect an environmental state in which the image forming apparatus is installed; a prediction unit configured to predict, based on a plurality of detection results detected by the first detection unit in a first period, a change in the environmental state in a second period after the first period; and a setting unit configured to set a timing of executing the calibration in the second period based on the change in the environmental state predicted by the prediction unit.Type: ApplicationFiled: June 2, 2020Publication date: December 3, 2020Inventor: Tadashi Okanishi
-
Patent number: 10664214Abstract: An image forming apparatus to form an image on a recording material includes a first collecting unit, a second collecting unit, and a changing unit. The first collecting unit collects information regarding the image forming apparatus. The second collecting unit collects information regarding a user using the image forming apparatus. The changing unit changes an image forming operation forming an image on a recording material based on the information regarding the image forming apparatus collected by the first collecting unit and the information regarding the user collected by the second collecting unit.Type: GrantFiled: March 6, 2019Date of Patent: May 26, 2020Assignee: Canon Kabushiki KaishaInventor: Tadashi Okanishi
-
Publication number: 20190286400Abstract: An image forming apparatus to form an image on a recording material includes a first collecting unit, a second collecting unit, and a changing unit. The first collecting unit collects information regarding the image forming apparatus. The second collecting unit collects information regarding a user using the image forming apparatus. The changing unit changes an image forming operation forming an image on a recording material based on the information regarding the image forming apparatus collected by the first collecting unit and the information regarding the user collected by the second collecting unit.Type: ApplicationFiled: March 6, 2019Publication date: September 19, 2019Inventor: Tadashi Okanishi
-
Patent number: 10274884Abstract: An image forming apparatus connected to one or more other image forming apparatuses, the image forming apparatus comprises: a detecting unit that detects a characteristic of a recording material; an obtaining unit that obtains a detection result by the detecting unit in each of the one or more other image forming apparatuses; and a determining unit that determines a type of a recording material used for image formation in the image forming apparatus based on the detection result by the detecting unit and the detection result obtained by the obtaining unit.Type: GrantFiled: November 10, 2017Date of Patent: April 30, 2019Assignee: CANON KABUSHIKI KAISHAInventor: Tadashi Okanishi
-
Publication number: 20180150012Abstract: An image forming apparatus connected to one or more other image forming apparatuses, the image forming apparatus comprises: a detecting unit that detects a characteristic of a recording material; an obtaining unit that obtains a detection result by the detecting unit in each of the one or more other image forming apparatuses; and a determining unit that determines a type of a recording material used for image formation in the image forming apparatus based on the detection result by the detecting unit and the detection result obtained by the obtaining unit.Type: ApplicationFiled: November 10, 2017Publication date: May 31, 2018Inventor: Tadashi Okanishi
-
Patent number: 9964907Abstract: An image forming apparatus includes a feeding unit, a regulation member, a detection unit, and a control unit. The feeding unit feeds a recording material from a storage unit to a conveying path. In the storage unit, the regulation member controls a trailing edge of the recording material in a feeding direction. The detection unit detects time until the recording material reaches a predetermined position along the conveying path after the feeding unit begins to feed the recording material. The control unit determines a state of the regulation member based on the detected time. Where the time detected by the detection unit is a value between a first threshold and a second threshold, which is larger than the first threshold, the control unit determines that the regulation member is shifting from a position corresponding to a size of the recording material in the feeding direction.Type: GrantFiled: November 18, 2014Date of Patent: May 8, 2018Assignee: Canon Kabushiki KaishaInventors: Masahiro Uehara, Hideyuki Matsubara, Tadashi Okanishi, Eijiro Ohashi, Masayoshi Takahashi
-
Patent number: 9588487Abstract: The image forming apparatus includes the fan motor that cools an FET, and a CPU that predicts temperature of the FET, and controls the rotation speed of the fan motor based on the predicted temperature of the FET, wherein the CPU determines the rotation speed of the fan motor at the start of image forming operation, based on predicated temperature of the FET of the time when the image forming operation starts.Type: GrantFiled: June 27, 2016Date of Patent: March 7, 2017Assignee: Canon Kabushiki KaishaInventors: Tsutomu Sasaki, Hiroshi Kawamura, Tadashi Okanishi, Masaki Kobayashi
-
Publication number: 20170023900Abstract: The present invention improves productivity and usability by reducing the possibility of a conveying failure when regulation plates in a storage unit for a recording material are incorrectly set. An image forming apparatus includes a storage unit configured to store a recording material, a feeding unit configured to feed the recording material from the storage unit, a regulation member configured to control a downstream edge of the recording material in a feeding direction in the storage unit, a detection unit configured to detect time until the recording material reaches a position along the conveying path after the feeding unit begins to feed the recording material, and a control unit configured to determine a state of the regulation member on the basis of the time detected by the detection unit.Type: ApplicationFiled: November 18, 2014Publication date: January 26, 2017Inventors: Masahiro Uehara, Hideyuki Matsubara, Tadashi Okanishi, Eijiro Ohashi, Masayoshi Takahashi
-
Publication number: 20160306322Abstract: The image forming apparatus includes the fan motor that cools an FET, and a CPU that predicts temperature of the FET, and controls the rotation speed of the fan motor based on the predicted temperature of the FET, wherein the CPU determines the rotation speed of the fan motor at the start of image forming operation, based on predicated temperature of the FET of the time when the image forming operation starts.Type: ApplicationFiled: June 27, 2016Publication date: October 20, 2016Inventors: Tsutomu Sasaki, Hiroshi Kawamura, Tadashi Okanishi, Masaki Kobayashi
-
Patent number: 9413916Abstract: The image forming apparatus includes a fan motor that cools an FET, and a CPU that predicts temperature of the FET, and controls the rotation speed of the fan motor based on the predicted temperature of the FET. The CPU determines the rotation speed of the fan motor at the start of image forming operation based on predicated temperature of the FET at the time when the image forming operation starts.Type: GrantFiled: November 25, 2015Date of Patent: August 9, 2016Assignee: Canon Kabushiki KaishaInventors: Tsutomu Sasaki, Hiroshi Kawamura, Tadashi Okanishi, Masaki Kobayashi
-
Patent number: 9383704Abstract: A grammage detection sensor according to an aspect of the present invention includes a transmission unit configured to transmit an ultrasonic wave, a reception unit configured to receive the ultrasonic wave transmitted from the transmission unit, and a control unit configured to detect a grammage of a recording material, when a plurality of recording materials are continuously conveyed between the transmission unit and the reception unit, on the basis of a first ultrasonic wave received by the reception unit after the ultrasonic wave is transmitted by the transmission unit between a preceding recording material and a recording material following the preceding recording material, and a second ultrasonic wave received via a recording material by the reception unit after the ultrasonic wave is transmitted by the transmission unit.Type: GrantFiled: December 16, 2014Date of Patent: July 5, 2016Assignee: Canon Kabushiki KaishaInventors: Teruhiko Namiki, Shuhei Watanabe, Yasutaka Yagi, Tsutomu Ishida, Tadashi Okanishi, Motoyasu Muramatsu
-
Publication number: 20160156796Abstract: The image forming apparatus includes the fan motor that cools an FET, and a CPU that predicts temperature of the FET, and controls the rotation speed of the fan motor based on the predicted temperature of the FET, wherein the CPU determines the rotation speed of the fan motor at the start of image forming operation, based on predicated temperature of the FET of the time when the image forming operation starts.Type: ApplicationFiled: November 25, 2015Publication date: June 2, 2016Inventors: Tsutomu Sasaki, Hiroshi Kawamura, Tadashi Okanishi, Masaki Kobayashi
-
Patent number: 9250591Abstract: A sensor is attached to an apparatus having a fixing unit which fixes an image on a recording medium by heating the recording medium. The sensor includes: a transmission unit transmitting an ultrasonic wave to the recording medium; a reception unit receiving the ultrasonic wave via the recording medium, and output a signal corresponding to the received ultrasonic wave; and a detecting unit detecting information relating to a state of the recording medium which has changed by passing through the fixing unit, based on a first signal which the reception unit has output upon having received the ultrasonic wave before the recording medium has passed through the fixing unit, and a second signal which the reception unit has output upon having received the ultrasonic wave after the recording medium has passed through the fixing unit.Type: GrantFiled: December 8, 2014Date of Patent: February 2, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Yasutaka Yagi, Tsutomu Ishida, Tadashi Okanishi, Teruhiko Namiki, Motoyasu Muramatsu, Masaki Kobayashi
-
Publication number: 20150177663Abstract: A grammage detection sensor according to an aspect of the present invention includes a transmission unit configured to transmit an ultrasonic wave, a reception unit configured to receive the ultrasonic wave transmitted from the transmission unit, and a control unit configured to detect a grammage of a recording material, when a plurality of recording materials are continuously conveyed between the transmission unit and the reception unit, on the basis of a first ultrasonic wave received by the reception unit after the ultrasonic wave is transmitted by the transmission unit between a preceding recording material and a recording material following the preceding recording material, and a second ultrasonic wave received via a recording material by the reception unit after the ultrasonic wave is transmitted by the transmission unit.Type: ApplicationFiled: December 16, 2014Publication date: June 25, 2015Inventors: Teruhiko Namiki, Shuhei Watanabe, Yasutaka Yagi, Tsutomu Ishida, Tadashi Okanishi, Motoyasu Muramatsu
-
Publication number: 20150160598Abstract: A sensor is attached to an apparatus having a fixing unit which fixes an image on a recording medium by heating the recording medium. The sensor includes: a transmission unit transmitting an ultrasonic wave to the recording medium; a reception unit receiving the ultrasonic wave via the recording medium, and output a signal corresponding to the received ultrasonic wave; and a detecting unit detecting information relating to a state of the recording medium which has changed by passing through the fixing unit, based on a first signal which the reception unit has output upon having received the ultrasonic wave before the recording medium has passed through the fixing unit, and a second signal which the reception unit has output upon having received the ultrasonic wave after the recording medium has passed through the fixing unit.Type: ApplicationFiled: December 8, 2014Publication date: June 11, 2015Inventors: Yasutaka Yagi, Tsutomu Ishida, Tadashi Okanishi, Teruhiko Namiki, Motoyasu Muramatsu, Masaki Kobayashi
-
Patent number: 9052661Abstract: When a pre-rotation sequence is started at a time at which a print-start notification command is transmitted, in the case where a predicted time period is longer than a time period taken to perform the pre-rotation sequence, an appropriate FPOT is not realized. To determine whether the pre-rotation sequence can be started at a time at which a print reservation command that is to be transmitted before transmission of the print-start notification command is transmitted to the engine, a drum-rotation permission command is provided, whereby, in the case of immediately starting the pre-rotation sequence, the pre-rotation sequence can be started earlier than the pre-rotation sequence is started, reducing the FPOT. In the case of not immediately starting the pre-rotation sequence, a time period taken to perform image expansion and the time period taken to perform the pre-rotation sequence can be made to coincide with each other, reducing consumable items deterioration.Type: GrantFiled: October 22, 2012Date of Patent: June 9, 2015Assignee: Canon Kabushiki KaishaInventor: Tadashi Okanishi
-
Patent number: 8687986Abstract: The image forming apparatus includes a loop amount detection sensor, disposed between a secondary transfer part and a fixing part, for detecting a loop amount of a transfer material by detecting a reflection of light radiated on the transfer material, a density detection sensor for detecting a density of a toner image that is primarily transferred to the intermediate transfer belt with the primary transfer roller, and a loop control part for controlling the loop amount of the transfer material based on the density of the toner image that is detected by the density detection sensor and the loop amount that is detected by the loop amount detection sensor. Accordingly, the image forming apparatus attains higher accuracy in the deflection amount detection by performing the deflection amount detection at least with the dependency of the image formed on the transfer material mitigated.Type: GrantFiled: January 19, 2011Date of Patent: April 1, 2014Assignee: Canon Kabushiki KaishaInventors: Tadashi Okanishi, Shinri Watanabe