Patents by Inventor Teruyoshi Sudoh
Teruyoshi Sudoh 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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Patent number: 11609509Abstract: A developing apparatus includes: a developer tank that contains a developer; and conveyance members that convey the developer while agitating the developer. The conveyance members include a first screw and a second screw. The developer tank includes: a first storage chamber in which the first screw is provided; a second storage chamber in which the second screw is provided; a partition that separates the first storage chamber from the second storage chamber; and a flow area that opens the partition to flow the developer between the first storage chamber and the second storage chamber; a developer detection sensor that detects an amount of the developer thereof; a discharge port that discharges the developer; and a discharge guide that guides the developer to the discharge port. The developer detection sensor detects that the developer tank is full according to the amount of the developer.Type: GrantFiled: August 16, 2021Date of Patent: March 21, 2023Assignee: SHARP KABUSHIKI KAISHAInventor: Teruyoshi Sudoh
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Publication number: 20220057731Abstract: A developing apparatus includes: a developer tank that contains a developer; and conveyance members that convey the developer while agitating the developer. The conveyance members include a first screw and a second screw. The developer tank includes: a first storage chamber in which the first screw is provided; a second storage chamber in which the second screw is provided; a partition that separates the first storage chamber from the second storage chamber; and a flow area that opens the partition to flow the developer between the first storage chamber and the second storage chamber; a developer detection sensor that detects an amount of the developer thereof; a discharge port that discharges the developer; and a discharge guide that guides the developer to the discharge port. The developer detection sensor detects that the developer tank is full according to the amount of the developer.Type: ApplicationFiled: August 16, 2021Publication date: February 24, 2022Inventor: Teruyoshi SUDOH
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Patent number: 7983603Abstract: A toner cartridge includes: a toner holding container having an outlet formed thereon; a partition wall separating the inside of toner holding container to a toner discharging portion in which the outlet is formed and a toner stirring portion other than the toner discharging portion; a toner discharging member axially and rotatably supported in the toner discharging portion for carrying the toner contained in the toner discharging portion to the outlet; a toner stirring member axially and rotatably supported in the toner stirring portion for stirring and carrying to the toner discharging portion the toner in the toner stirring portion; and an upper lid with a recess formed to surround, like a tunnel, the toner discharging member at a portion above the outlet, together with the partition wall and the toner holding container.Type: GrantFiled: March 2, 2009Date of Patent: July 19, 2011Assignee: Sharp Kabushiki KaishaInventors: Takahiko Kimura, Tomoya Usui, Teruyoshi Sudoh
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Patent number: 7805098Abstract: The development device of the present invention has a rotating shutter supported rotatably between a supply opening formed on a toner supply device and a receiving opening formed on a developing tank. The rotating shutter has an open section extending in the axial direction of the roller-shaped main section as well as opened in the direction perpendicular to the axial direction thereof, opening and shutting the supply opening in conjunction with attachment and detachment operation of the developing tank. The rotating shutter shuts the supply opening by covering the supply opening with the outer surface of the roller-shaped main section, and opens the supply opening by communicating the supply opening and the receiving opening through the open section. Thus, it is possible to prevent the leakage of toner even after repetitively performing the attachment and detachment operation of the developing tank.Type: GrantFiled: March 3, 2008Date of Patent: September 28, 2010Assignee: Sharp Kabushiki KaishaInventors: Takahiko Kimura, Shigeki Hayashi, Shuichi Akedo, Teruyoshi Sudoh, Tomoya Usui
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Patent number: 7647009Abstract: A developing apparatus having agitating/supplying section which is capable of providing enhanced developer stirrability and supplying a developer to a developing roller uniformly in its lengthwise direction is provided. The developing apparatus installed in an electrophotographic image forming apparatus includes an agitating/supplying section composed of: a rotary shaft member which is made rotatable about its rotation axis; a plurality of blade support members disposed intersectionally with respect to the rotation axis of the rotary shaft member; and a plurality of blade members formed between respective adjacent blade support members so as to be arranged around the rotation axis of the rotary shaft member and extend in a direction of the rotation axis.Type: GrantFiled: April 21, 2006Date of Patent: January 12, 2010Assignee: Sharp Kabushiki KaishaInventors: Masanobu Deguchi, Kazuya Koyama, Teruyoshi Sudoh
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Publication number: 20090245852Abstract: A toner supply device includes a toner storage tank for storing toner; a toner supply roller for discharging toner; a covering member for covering the top surface of the toner storage tank filled with toner; and a sealing element provided between the toner storage tank and the covering member.Type: ApplicationFiled: March 10, 2009Publication date: October 1, 2009Inventors: Takahiko KIMURA, Tomoya USUI, Masanobu DEGUCHI, Teruyoshi SUDOH
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Patent number: 7587154Abstract: A developing unit for developing an electrostatic latent image formed on the outer peripheral surface of a latent image bearing member rotating in one direction with a developer by mixing electrostatically chargeable toner and magnetic carrier, includes: a developing roller; a carrier collecting roller; a cooling portion including a forced draft duct for airflow from a fan and disposed on the bottom side of the developing vessel; a suctioning portion including a suctioning duct for airflow from suctioning ports disposed on the lower side of the carrier collecting roller, disposed under the forced draft duct; a filter for removing the scattering toner from air including the scattering toner suctioned from the suctioning ports; and, an exhaust portion including an airflow exhaust duct for discharging the air passed through the filter and the forced draft duct to an exhaust port.Type: GrantFiled: December 14, 2007Date of Patent: September 8, 2009Assignee: Sharp Kabushiki KaishaInventors: Masahiro Sakai, Shuichi Akedo, Shigeki Hayashi, Teruyoshi Sudoh
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Publication number: 20090220285Abstract: A toner cartridge includes: a toner holding container having an outlet formed thereon; a partition wall separating the inside of toner holding container to a toner discharging portion in which the outlet is formed and a toner stirring portion other than the toner discharging portion; a toner discharging member axially and rotatably supported in the toner discharging portion for carrying the toner contained in the toner discharging portion to the outlet; a toner stirring member axially and rotatably supported in the toner stirring portion for stirring and carrying to the toner discharging portion the toner in the toner stirring portion; and an upper lid with a recess formed to surround, like a tunnel, the toner discharging member at a portion above the outlet, together with the partition wall and the toner holding container.Type: ApplicationFiled: March 2, 2009Publication date: September 3, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Takahiko Kimura, Tomoya Usui, Teruyoshi Sudoh
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Patent number: 7499656Abstract: An object of the present invention is to provide a remaining amount of toner detecting apparatus capable of highly accurately detecting the remaining amount of toner with a simple configuration, a toner cartridge in which the remaining amount of toner is highly accurately detected with a simple configuration, and an image forming apparatus which enables the operator to easily recognize time to resupply toner and is capable of forming an image of high image quality. A holding member (22) is flexible, one end (22a) in the longitudinal direction is connected to a stirring member (11), and the other end (22b) in the longitudinal direction holds a detection auxiliary member (21) disposed in a housing (8). Consequently, the holding member (22) and the detection auxiliary member (21) rotate as the stirring member (11) rotates.Type: GrantFiled: March 18, 2004Date of Patent: March 3, 2009Assignee: Sharp Kabushiki KaishaInventors: Takahiko Kimura, Takeshi Wakabayashi, Teruyoshi Sudoh
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Publication number: 20080219699Abstract: The development device of the present invention has a rotating shutter supported rotatably between a supply opening formed on a toner supply device and a receiving opening formed on a developing tank. The rotating shutter has an open section extending in the axial direction of the roller-shaped main section as well as opened in the direction perpendicular to the axial direction thereof, opening and shutting the supply opening in conjunction with attachment and detachment operation of the developing tank. The rotating shutter shuts the supply opening by covering the supply opening with the outer surface of the roller-shaped main section, and opens the supply opening by communicating the supply opening and the receiving opening through the open section. Thus, it is possible to prevent the leakage of toner even after repetitively performing the attachment and detachment operation of the developing tank.Type: ApplicationFiled: March 3, 2008Publication date: September 11, 2008Inventors: Takahiko Kimura, Shigeki Hayashi, Shuichi Akedo, Teruyoshi Sudoh, Tomoya Usui
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Publication number: 20080170876Abstract: A developing unit for developing an electrostatic latent image formed on the outer peripheral surface of a latent image bearing member rotating in one direction with a developer by mixing electrostatically chargeable toner and magnetic carrier, includes: a developing roller; a carrier collecting roller; a cooling portion including a forced draft duct for airflow from a fan and disposed on the bottom side of the developing vessel; a suctioning portion including a suctioning duct for airflow from suctioning ports disposed on the lower side of the carrier collecting roller, disposed under the forced draft duct; a filter for removing the scattering toner from air including the scattering toner suctioned from the suctioning ports; and, an exhaust portion including an airflow exhaust duct for discharging the air passed through the filter and the forced draft duct to an exhaust port.Type: ApplicationFiled: December 14, 2007Publication date: July 17, 2008Applicant: SHARP KABUSHIKI KAISHAInventors: Masahiro SAKAI, Shuichi Akedo, Shigeki Hayashi, Teruyoshi Sudoh
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Publication number: 20060239718Abstract: A developing apparatus having agitating/supplying section which is capable of providing enhanced developer stirrability and supplying a developer to a developing roller uniformly in its lengthwise direction is provided. The developing apparatus installed in an electrophotographic image forming apparatus includes an agitating/supplying section composed of: a rotary shaft member which is made rotatable about its rotation axis; a plurality of blade support members disposed intersectionally with respect to the rotation axis of the rotary shaft member; and a plurality of blade members formed between respective adjacent blade support members so as to be arranged around the rotation axis of the rotary shaft member and extend in a direction of the rotation axis.Type: ApplicationFiled: April 21, 2006Publication date: October 26, 2006Applicant: Sharp Kabushiki KaishaInventors: Masanobu Deguchi, Kazuya Koyama, Teruyoshi Sudoh
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Publication number: 20060198643Abstract: An object of the present invention is to provide a remaining amount of toner detecting apparatus capable of highly accurately detecting the remaining amount of toner with a simple configuration, a toner cartridge in which the remaining amount of toner is highly accurately detected with a simple configuration, and an image forming apparatus which enables the operator to easily recognize time to resupply toner and is capable of forming an image of high image quality. A holding member (22) is flexible, one end (22a) in the longitudinal direction is connected to a stirring member (11), and the other end (22b) in the longitudinal direction holds a detection auxiliarymember (21) disposed in a housing (8). Consequently, the holding member (22) and the detection auxiliary member (21) rotate as the stirring member (11) rotates.Type: ApplicationFiled: March 18, 2004Publication date: September 7, 2006Inventors: Takahiko Kimura, Takeshi Wakabayashi, Teruyoshi Sudoh