Patents by Inventor Goo Chul JUNG
Goo Chul JUNG 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: 20210116843Abstract: A toner container is detachably attachable to a developing device. The developing device includes an inlet to be poured with a toner, an inlet shutter to move between a closed position, at which the inlet is closed, and an open position, at which the inlet is open, a biasing mechanism to bias the inlet shutter toward the closed position, an engaged structure provided in the inlet shutter, an engaging structure to engage with the engaged structure and to retain the inlet shutter at the open position against a biasing force of the biasing mechanism, and an engagement releasing structure provided in the inlet shutter and to release an engaging state between the engaged structure and the engaging structure. The toner container includes a contacting surface to contact with the engagement releasing structure and to make the engagement releasing structure release the engaging state.Type: ApplicationFiled: December 29, 2020Publication date: April 22, 2021Applicant: Ricoh Company, Ltd.Inventors: Tomofumi YOSHIDA, Kohta SAKAYA, Shinichi ARASAWA, Jin Sam PARK, Goo Chul JUNG, Yasunobu OGATA
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Patent number: 10915040Abstract: A toner container is detachably attachable to a developing device. The developing device includes an inlet to be poured with a toner, an inlet shutter to move between a closed position, at which the inlet is closed, and an open position, at which the inlet is open, a biasing mechanism to bias the inlet shutter toward the closed position, an engaged structure provided in the inlet shutter, an engaging structure to engage with the engaged structure and to retain the inlet shutter at the open position against a biasing force of the biasing mechanism, and an engagement releasing structure provided in the inlet shutter and to release an engaging state between the engaged structure and the engaging structure. The toner container includes a contacting surface to contact with the engagement releasing structure and to make the engagement releasing structure release the engaging state.Type: GrantFiled: December 26, 2019Date of Patent: February 9, 2021Assignee: RICOH COMPANY, LTD.Inventors: Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung, Yasunobu Ogata
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Publication number: 20200133164Abstract: A toner container is detachably attachable to a developing device. The developing device includes an inlet to be poured with a toner, an inlet shutter to move between a closed position, at which the inlet is closed, and an open position, at which the inlet is open, a biasing mechanism to bias the inlet shutter toward the closed position, an engaged structure provided in the inlet shutter, an engaging structure to engage with the engaged structure and to retain the inlet shutter at the open position against a biasing force of the biasing mechanism, and an engagement releasing structure provided in the inlet shutter and to release an engaging state between the engaged structure and the engaging structure. The toner container includes a contacting surface to contact with the engagement releasing structure and to make the engagement releasing structure release the engaging state.Type: ApplicationFiled: December 26, 2019Publication date: April 30, 2020Applicant: Ricoh Company, Ltd.Inventors: Tomofumi YOSHIDA, Kohta SAKAYA, Shinichi ARASAWA, Jin Sam PARK, Goo Chul JUNG, Yasunobu OGATA
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Patent number: 10564572Abstract: A toner container is detachably attachable to a developing device. The developing device includes an inlet to be poured with a toner, an inlet shutter to move between a closed position, at which the inlet is closed, and an open position, at which the inlet is open, a biasing mechanism to bias the inlet shutter toward the closed position, an engaged structure provided in the inlet shutter, an engaging structure to engage with the engaged structure and to retain the inlet shutter at the open position against a biasing force of the biasing mechanism, and an engagement releasing structure provided in the inlet shutter and to release an engaging state between the engaged structure and the engaging structure. The toner container includes a contacting surface to contact with the engagement releasing structure and to make the engagement releasing structure release the engaging state.Type: GrantFiled: April 30, 2019Date of Patent: February 18, 2020Assignee: RICOH COMPANY, LTD.Inventors: Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung, Yasunobu Ogata
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Publication number: 20190258191Abstract: A toner container is detachably attachable to a developing device. The developing device includes an inlet to be poured with a toner, an inlet shutter to move between a closed position, at which the inlet is closed, and an open position, at which the inlet is open, a biasing mechanism to bias the inlet shutter toward the closed position, an engaged structure provided in the inlet shutter, an engaging structure to engage with the engaged structure and to retain the inlet shutter at the open position against a biasing force of the biasing mechanism, and an engagement releasing structure provided in the inlet shutter and to release an engaging state between the engaged structure and the engaging structure. The toner container includes a contacting surface to contact with the engagement releasing structure and to make the engagement releasing structure release the engaging state.Type: ApplicationFiled: April 30, 2019Publication date: August 22, 2019Applicant: Ricoh Company, Ltd.Inventors: Tomofumi YOSHIDA, Kohta SAKAYA, Shinichi ARASAWA, Jin Sam PARK, Goo Chul JUNG, Yasunobu OGATA
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Patent number: 10365584Abstract: A toner container is detachably attachable to a developing device. The developing device includes an inlet to be poured with a toner, an inlet shutter to move between a closed position, at which the inlet is closed, and an open position, at which the inlet is open, a biasing mechanism to bias the inlet shutter toward the closed position, an engaged structure provided in the inlet shutter, an engaging structure to engage with the engaged structure and to retain the inlet shutter at the open position against a biasing force of the biasing mechanism, and an engagement releasing structure provided in the inlet shutter and to release an engaging state between the engaged structure and the engaging structure. The toner container includes a contacting surface to contact with the engagement releasing structure and to make the engagement releasing structure release the engaging state.Type: GrantFiled: May 4, 2018Date of Patent: July 30, 2019Assignee: RICOH COMPANY, LTD.Inventors: Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung, Yasunobu Ogata
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Patent number: 10317817Abstract: A toner container is detachably attachable to a developing device. The developing device includes an inlet to be poured with a toner, an inlet shutter to move between a closed position, at which the inlet is closed, and an open position, at which the inlet is open, a biasing mechanism to bias the inlet shutter toward the closed position, an engaged structure provided in the inlet shutter, an engaging structure to engage with the engaged structure and to retain the inlet shutter at the open position against a biasing force of the biasing mechanism, and an engagement releasing structure provided in the inlet shutter and to release an engaging state between the engaged structure and the engaging structure. The toner container includes a contacting surface to contact with the engagement releasing structure and to make the engagement releasing structure release the engaging state.Type: GrantFiled: May 4, 2018Date of Patent: June 11, 2019Assignee: RICOH COMPANY, LTD.Inventors: Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung, Yasunobu Ogata
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Publication number: 20180253032Abstract: A toner container is detachably attachable to a developing device. The developing device includes an inlet to be poured with a toner, an inlet shutter to move between a closed position, at which the inlet is closed, and an open position, at which the inlet is open, a biasing mechanism to bias the inlet shutter toward the closed position, an engaged structure provided in the inlet shutter, an engaging structure to engage with the engaged structure and to retain the inlet shutter at the open position against a biasing force of the biasing mechanism, and an engagement releasing structure provided in the inlet shutter and to release an engaging state between the engaged structure and the engaging structure. The toner container includes a contacting surface to contact with the engagement releasing structure and to make the engagement releasing structure release the engaging state.Type: ApplicationFiled: May 4, 2018Publication date: September 6, 2018Inventors: Tomofumi YOSHIDA, Kohta SAKAYA, Shinichi ARASAWA, Jin Sam PARK, Goo Chul JUNG, Yasunobu OGATA
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Patent number: 10025227Abstract: A toner container is detachably attachable to a developing device. The developing device includes an inlet to be poured with a toner, an inlet shutter to move between a closed position, at which the inlet is closed, and an open position, at which the inlet is open, a biasing mechanism to bias the inlet shutter toward the closed position, an engaged structure provided in the inlet shutter, an engaging structure to engage with the engaged structure and to retain the inlet shutter at the open position against a biasing force of the biasing mechanism, and an engagement releasing structure provided in the inlet shutter and to release an engaging state between the engaged structure and the engaging structure. The toner container includes a contacting surface to contact with the engagement releasing structure and to make the engagement releasing structure release the engaging state.Type: GrantFiled: April 18, 2017Date of Patent: July 17, 2018Assignee: RICOH COMPANY, LTD.Inventors: Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung, Yasunobu Ogata
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Publication number: 20170219957Abstract: A toner container is detachably attachable to a developing device. The developing device includes an inlet to be poured with a toner, an inlet shutter to move between a closed position, at which the inlet is closed, and an open position, at which the inlet is open, a biasing mechanism to bias the inlet shutter toward the closed position, an engaged structure provided in the inlet shutter, an engaging structure to engage with the engaged structure and to retain the inlet shutter at the open position against a biasing force of the biasing mechanism, and an engagement releasing structure provided in the inlet shutter and to release an engaging state between the engaged structure and the engaging structure. The toner container includes a contacting surface to contact with the engagement releasing structure and to make the engagement releasing structure release the engaging state.Type: ApplicationFiled: April 18, 2017Publication date: August 3, 2017Inventors: Tomofumi YOSHIDA, Kohta SAKAYA, Shinichi ARASAWA, Jin Sam PARK, Goo Chul JUNG, Yasunobu OGATA
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Patent number: 9690231Abstract: A toner container includes a container body that is used to house a toner and that is detachably attachable to a mounting portion in a developing device; and an operating member that is used to open and close a shutter. The shutter as well as the operating member includes an engaging portion that can engage with a linking member which is disposed in the mounting portion and which can perform a reciprocating linear movement. In the state in which the container body is not mounted in the mounting portion, the shutter and the operating member are in a non-linked state with each other. In contrast, in the state in which the container body is mounted in the mounting portion, the shutter and the operating member become able to be linked to each other via the linking member.Type: GrantFiled: May 30, 2014Date of Patent: June 27, 2017Assignee: RICOH COMPANY, LIMITEDInventors: Tomofumi Yoshida, Kohta Sakaya, Shinichi Arasawa, Jin Sam Park, Goo Chul Jung, Yasunobu Ogata
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Patent number: 9405228Abstract: Disclosed is a developer discharging device for an image forming apparatus, which is installed in a developing unit configured to transfer and discharge a developer collected from a drum unit or a newly introduced developer, such that the developer is discharged to a developer collecting unit, including a first discharging part configured to extend from an end of a transferring screw installed in the developing unit, and a second discharging part disposed above the first discharging part in parallel with the first discharging part, wherein the developer discharged from the second discharging part falls into the developer collecting unit. Therefore, it is possible to prevent the developer from being sharply discharged, and thus to constantly maintain an amount of the developer.Type: GrantFiled: May 28, 2015Date of Patent: August 2, 2016Assignee: SINDOH CO., LTD.Inventors: Byoung Bag Lee, Goo Chul Jung, Jin Sam Park
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Patent number: 9383716Abstract: A cartridge assembly for an image forming apparatus, including a drum unit provided with a waste toner conveyor which conveys waste toner collected from a surface of a photosensitive drum to one side; a developing unit connected with the drum unit, configured to receive the waste toner collected from the drum unit, and having a developer discharger to discharge a developer therein to an outside; and a developer collecting unit integrally formed with the drum unit at one side of the drum unit, and configured to collect the developer discharged by the developer discharger of the developing unit, wherein the drum unit includes a toner injector which connects the waste toner conveyor, a new toner supply unit and the developing unit so that the waste toner conveyed by the waste toner conveyor and new toner supplied from the new toner supply unit are injected together into the developing unit.Type: GrantFiled: August 25, 2015Date of Patent: July 5, 2016Assignee: SINDOH CO., LTD.Inventors: Byoung Bag Lee, Goo Chul Jung, Jin Sam Park, Woo Sung Jung
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Publication number: 20160147179Abstract: Disclosed is a developer discharging device for an image forming apparatus, which is installed in a developing unit configured to transfer and discharge a developer collected from a drum unit or a newly introduced developer, such that the developer is discharged to a developer collecting unit, including a first discharging part configured to extend from an end of a transferring screw installed in the developing unit, and a second discharging part disposed above the first discharging part in parallel with the first discharging part, wherein the developer discharged from the second discharging part falls into the developer collecting unit. Therefore, it is possible to prevent the developer from being sharply discharged, and thus to constantly maintain an amount of the developer.Type: ApplicationFiled: May 28, 2015Publication date: May 26, 2016Inventors: Byoung Bag LEE, Goo Chul JUNG, Jin Sam PARK
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Publication number: 20160109827Abstract: A toner container includes a container body that is used to house a toner and that is detachably attachable to a mounting portion in a developing device; and an operating member that is used to open and close a shutter. The shutter as well as the operating member includes an engaging portion that can engage with a linking member which is disposed in the mounting portion and which can perform a reciprocating linear movement. In the state in which the container body is not mounted in the mounting portion, the shutter and the operating member are in a non-linked state with each other. In contrast, in the state in which the container body is mounted in the mounting portion, the shutter and the operating member become able to be linked to each other via the linking member.Type: ApplicationFiled: May 30, 2014Publication date: April 21, 2016Inventors: Tomofumi YOSHIDA, Kohta SAKAYA, Shinichi ARASAWA, Jin Sam PARK, Goo Chul JUNG, Yasunobu OGATA
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Publication number: 20160062304Abstract: Provided is a cartridge assembly for an image forming apparatus, including a drum unit provided with a waste toner conveying means which conveys waste toner collected from a surface of a photosensitive drum to one side; a developing unit connected with the drum unit, configured to receive the waste toner collected from the drum unit, and having a developer discharging means to discharge a developer therein to an outside; and a developer collecting unit integrally formed with the drum unit at one side of the drum unit, and configured to collect the developer discharged by the developer discharging means of the developing unit, wherein the drum unit includes a toner injecting means which connects the waste toner conveying means, a new toner supply unit and the developing unit so that the waste toner conveyed by the waste toner conveying means and new toner supplied from the new toner supply unit are injected together into the developing unit.Type: ApplicationFiled: August 25, 2015Publication date: March 3, 2016Inventors: Byoung Bag LEE, Goo Chul JUNG, Jin Sam PARK, Woo Sung JUNG