Patents by Inventor Woong Yong Choi
Woong Yong Choi 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: 11571854Abstract: Examples of a print a print particle replenishment device are described. In some examples, a print particle replenishment device includes a rotating member to rotate about a central axis of the print particle replenishment device. In some examples, the rotating member includes an opening offset from the central axis. In some examples of a print particle replenishment device, a nozzle is offset from the central axis, where the nozzle is to slide with respect to an interior plane of the rotating member to align with the opening to transfer print particles through the nozzle and opening when in an open position. In some examples, a print particle replenishment device includes an extension that protrudes with respect to the opening to engage a port cover of a host device to move the port cover to open a port for replenishment at rotation.Type: GrantFiled: August 30, 2018Date of Patent: February 7, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Ji-Won Moon, Min-Chul Lee, Woong-Yong Choi, Matthew James Storey, Jefferson Blake West, Zackary Thomas Hickman
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Patent number: 11281125Abstract: An example toner refill cartridge includes a body, a plunger, a weight part, and a weight part container. The body includes a toner chamber to contain toner and a toner discharging portion having an entrance connected to one end of the toner chamber in a length direction and an exit to discharge toner. The plunger includes a piston that is movably inserted into the toner chamber in the length direction and a packing member located at an end of the piston to push the toner toward the toner discharging portion. The weight part is movably accommodated in the toner chamber and has a shape that prevents the weight part from passing through the entrance. The weight part container is provided in the one end of the toner chamber in the length direction such that the weight part can be accommodated therein.Type: GrantFiled: August 9, 2019Date of Patent: March 22, 2022Assignee: Hewlett-Packard Development Company, L.P.Inventors: Seung-Gweon Lee, Woong-Yong Choi, Jinhwa Hong, Ji-Won Moon
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Patent number: 11209750Abstract: Provided is a toner cartridge. The toner cartridge includes a body, a plunger, a memory unit, and a holder. The body is to accommodate toner and includes a toner discharge portion. The plunger is provided in the body and to push the toner outside of the body via the toner discharge portion. The memory unit includes an electrical contact portion including at least one electrical contact point. The holder facilities loading of the memory unit therein and being rotatable relative to the body between a home position and a rotated position.Type: GrantFiled: December 21, 2018Date of Patent: December 28, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Ji Won Moon, Woong Yong Choi
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Patent number: 11126113Abstract: A development cartridge is provided. The development cartridge includes a toner container, having a first air vent and a second air vent, to accommodate a toner, a developing portion to receive the toner from the toner container and having a developing roller installed therein, a toner refilling portion, connected to an end of the toner container in a longitudinal direction, to provide the toner container with a passage for refilling the toner, a filter installed in the first air vent to reduce leakage of the toner, and a pressure releasing member to communicate with the toner container via the second air vent and being transformable in a contracted state and an expanded state to expand a volume of the toner container, wherein the first air vent is formed at a position farther from the toner refilling portion than the second air vent.Type: GrantFiled: December 4, 2018Date of Patent: September 21, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Seung Gweon Lee, Ji Won Moon, Woong Yong Choi, Yong Il Moon, Yong Nam Ahn, Jin Hwa Hong
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Patent number: 11112728Abstract: A printer includes a main body, a development cartridge attachable to and detachable from the main body, the development cartridge to supply toner contained in a toner container to an electrostatic latent image formed on a photoconductor, to form a visible toner image, a mounting portion including a toner inlet portion connected to the toner container, where a toner cartridge usable to refill toner in the toner container is mountable to the mounting portion, an inlet shutter rotatably provided in the mounting portion to be rotatable together with the toner cartridge, the inlet shutter rotatable between a blocking position to block the toner inlet portion from receiving toner and an inlet position to open the toner inlet portion to receive toner, a locking unit to selectively lock and unlock the inlet shutter, and a controller to control the locking unit to selectively lock and unlock the inlet shutter based on whether the toner cartridge is mounted to the mounting portion.Type: GrantFiled: April 30, 2019Date of Patent: September 7, 2021Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Yong-Kwan Cho, Woong-Yong Choi
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Patent number: 11112727Abstract: A toner refilling interface structure including a toner cartridge, an installation portion, a first toner inlet portion, an inlet shutter, and a locking member. The toner cartridge including a discharge shutter located in or coupled to a body and to switch to a closed position at which a first toner discharge portion of the body is closed and to switch to a discharge position at which the first toner discharge portion is open. The toner cartridge is rotatable about a first rotation axis. The first toner inlet portion is provided in the installation portion to receive toner from the toner cartridge.Type: GrantFiled: December 21, 2018Date of Patent: September 7, 2021Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Yong Il Moon, Woong Yong Choi
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Publication number: 20210263448Abstract: A toner refill cartridge includes a body including a toner chamber containing toner and a toner discharging portion having an entrance connected to one end of the toner chamber in a length direction and an exit to discharge toner outside of the toner refill cartridge, a plunger including a piston that is movably inserted into the toner chamber in the length direction and a packing member located at an end of the piston to push the toner toward the toner discharging portion, a weight part movably accommodated in the toner chamber and having a shape which prevents the weight part from passing through the entrance, and a weight part container provided in the one end of the toner chamber in the length direction such that the weight part can be accommodated therein.Type: ApplicationFiled: August 9, 2019Publication date: August 26, 2021Inventors: Seung-Gweon LEE, Woong-Yong CHOI, Jinhwa HONG, Ji-Won MOON
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Publication number: 20210255565Abstract: Provided is a toner cartridge. The toner cartridge includes a body, a plunger, a memory unit, and a holder. The body is to accommodate toner and includes a toner discharge portion. The plunger is provided in the body and to push the toner outside of the body via the toner discharge portion. The memory unit includes an electrical contact portion including at least one electrical contact point. The holder facilities loading of the memory unit therein and being rotatable relative to the body between a home position and a rotated position.Type: ApplicationFiled: December 21, 2018Publication date: August 19, 2021Inventors: Ji Won Moon, Woong Yong Choi
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Publication number: 20210240101Abstract: A toner refilling interface structure including a toner cartridge, an installation portion, a first toner inlet portion, an inlet shutter, and a locking member. The toner cartridge including a discharge shutter located in or coupled to a body and to switch to a closed position at which a first toner discharge portion of the body is closed and to switch to a discharge position at which the first toner discharge portion is open. The toner cartridge is rotatable about a first rotation axis. The first toner inlet portion is provided in the installation portion to receive toner from the toner cartridge.Type: ApplicationFiled: December 21, 2018Publication date: August 5, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Yong Il MOON, Woong Yong CHOI
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Publication number: 20210232064Abstract: A printer includes a main body, a development cartridge attachable to and detachable from the main body, the development cartridge to supply toner contained in a toner container to an electrostatic latent image formed on a photoconductor, to form a visible toner image, a mounting portion including a toner inlet portion connected to the toner container, where a toner cartridge usable to refill toner in the toner container is mountable to the mounting portion, an inlet shutter rotatably provided in the mounting portion to be rotatable together with the toner cartridge, the inlet shutter rotatable between a blocking position to block the toner inlet portion from receiving toner and an inlet position to open the toner inlet portion to receive toner, a locking unit to selectively lock and unlock the inlet shutter, and a controller to control the locking unit to selectively lock and unlock the inlet shutter based on whether the toner cartridge is mounted to the mounting portion.Type: ApplicationFiled: April 30, 2019Publication date: July 29, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Yong-Kwan CHO, Woong-Yong CHOI
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Patent number: 11036164Abstract: A toner cartridge includes a container having an opening, a flexible bag in which toner is received, a sealing portion configured to seal the flexible bag, and an extension extending from an edge of the sealing portion, the flexible bag being accommodated in the container so that the sealing portion faces the opening, a rotatable member rotatably provided on the container, a movable member connected to the extension and being movable from a first position close to the opening to a second position far from the opening in a longitudinal direction of the container, a rope having a first end portion connected to the rotatable member and a second end portion connected to the movable member, and a bias member configured to elastically bias the rotatable member to rotate in a direction in which the rope is switched from an unwound state to a wound state.Type: GrantFiled: November 12, 2018Date of Patent: June 15, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Woong Yong Choi, Seung Gweon Lee, Jin Hwa Hong
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Publication number: 20210162666Abstract: Examples of a print a print particle replenishment device are described. In some examples, a print particle replenishment device includes a rotating member to rotate about a central axis of the print particle replenishment device. In some examples, the rotating member includes an opening offset from the central axis. In some examples of a print particle replenishment device, a nozzle is offset from the central axis, where the nozzle is to slide with respect to an interior plane of the rotating member to align with the opening to transfer print particles through the nozzle and opening when in an open position. In some examples, a print particle replenishment device includes an extension that protrudes with respect to the opening to engage a port cover of a host device to move the port cover to open a port for replenishment at rotation.Type: ApplicationFiled: August 30, 2018Publication date: June 3, 2021Inventors: Ji-Won MOON, Min-Chul LEE, Woong-Yong CHOI, Matthew James STOREY, Jefferson Blake WEST, Zackary Thomas HICKMAN
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Publication number: 20210149327Abstract: A development cartridge is provided. The development cartridge includes a toner container, having a first air vent and a second air vent, to accommodate a toner, a developing portion to receive the toner from the toner container and having a developing roller installed therein, a toner refilling portion, connected to an end of the toner container in a longitudinal direction, to provide the toner container with a passage for refilling the toner, a filter installed in the first air vent to reduce leakage of the toner, and a pressure releasing member to communicate with the toner container via the second air vent and being transformable in a contracted state and an expanded state to expand a volume of the toner container, wherein the first air vent is formed at a position farther from the toner refilling portion than the second air vent.Type: ApplicationFiled: December 4, 2018Publication date: May 20, 2021Inventors: Seung Gweon Lee, Ji Won Moon, Woong Yong Choi, Yong Il Moon, Yong Nam Ahn, Jin Hwa Hong
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Publication number: 20210103234Abstract: A toner cartridge includes a container having an opening, a flexible bag in which toner is received, a sealing portion configured to seal the flexible bag, and an extension extending from an edge of the sealing portion, the flexible bag being accommodated in the container so that the sealing portion faces the opening, a rotatable member rotatably provided on the container, a movable member connected to the extension and being movable from a first position close to the opening to a second position far from the opening in a longitudinal direction of the container, a rope having a first end portion connected to the rotatable member and a second end portion connected to the movable member, and a bias member configured to elastically bias the rotatable member to rotate in a direction in which the rope is switched from an unwound state to a wound state.Type: ApplicationFiled: November 12, 2018Publication date: April 8, 2021Inventors: Woong Yong Choi, Seung Gweon Lee, Jin Hwa Hong
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Patent number: 10558144Abstract: A developing cartridge includes a developing portion to supply toner, a toner storing portion to store the toner, a partition wall formed between the developing portion and the toner storing portion and having a toner supply section, and a storing-portion agitating member rotatably disposed in the toner storing portion to intermittently rotate to move the toner in the toner storing portion while the developing portion supplies the toner.Type: GrantFiled: October 19, 2018Date of Patent: February 11, 2020Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Ho-jin Jang, Jong-in Kim, Seong-woong Yang, Woong-yong Choi, Jin-hwa Hong
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Publication number: 20190049875Abstract: A developing cartridge includes a developing portion to supply toner, a toner storing portion to store the toner, a partition wall formed between the developing portion and the toner storing portion and having a toner supply section, and a storing-portion agitating member rotatably disposed in the toner storing portion to intermittently rotate to move the toner in the toner storing portion while the developing portion supplies the toner.Type: ApplicationFiled: October 19, 2018Publication date: February 14, 2019Applicant: S-PRINTING SOLUTION CO., LTD.Inventors: Ho-jin JANG, Jong-in KIM, Seong-woong YANG, Woong-yong CHOI, Jin-hwa HONG
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Patent number: 10139750Abstract: A developing cartridge is disposed in an image forming apparatus. The developing cartridge includes a developing portion; a toner storing portion; a partition wall positioned between the developing portion and the toner storing portion and provided with a toner supply section; a first agitating member inside the developing portion; and a second agitating member inside the toner storing portion, wherein at least one of the first agitating member and the second agitating member comprises an elastic member to be in contact with the partition wall.Type: GrantFiled: July 12, 2017Date of Patent: November 27, 2018Assignee: S-PRINTING SOLUTION CO., LTD.Inventors: Ho-jin Jang, Jong-in Kim, Seong-woong Yang, Woong-yong Choi, Jin-hwa Hong
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Patent number: D833519Type: GrantFiled: March 31, 2017Date of Patent: November 13, 2018Assignee: S-Printing Solution Co., Ltd.Inventors: Seong-Woong Yang, Jong-In Kim, Yun-Kyu Shim, Sang-Hoon Lee, Seung-Gweon Lee, Ho-Jin Jang, Woong-Yong Choi, Jin-Hwa Hong
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Patent number: D893598Type: GrantFiled: March 13, 2019Date of Patent: August 18, 2020Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Ji-Won Moon, Woong-Yong Choi, Jinhwa Hong, Min-Chul Lee, Kenneth K. Smith, Andrew Chick, Pratik Shah, Matthew Storey, Matthew Grossman, Muriel Hale Shields
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Patent number: D907698Type: GrantFiled: March 11, 2019Date of Patent: January 12, 2021Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Ji-Won Moon, Seung-Gweon Lee, Woong-Yong Choi, Yong-Kwan Cho, Yongil Moon, Yongnam Ahn, Jinhwa Hong, Seongho Jeong, ByeongNo Jeong, Sungchul Ahn, Woojin Kim