Patents by Inventor Sea-Chul Bae
Sea-Chul Bae 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: 11971671Abstract: A fusing apparatus includes: a pressing roller to be axially rotated; a fusing belt to rotate by receiving a rotational force from the pressing roller; a pressing member to press toward the pressing roller from the inside of the fusing belt to form a nip in which the printing paper is nipped between the fusing belt and the pressing roller; on the fusing belt or the pressing member, a sliding layer to reduce friction between the fusing belt and the pressing member; and an adhesive layer to adhere the sliding layer to the fusing belt or the pressing member.Type: GrantFiled: December 28, 2020Date of Patent: April 30, 2024Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sun Hyung Lee, Sea Chul Bae, Jae Hyeok Jang, Jin Gyu Ko
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Publication number: 20240069475Abstract: A fuser includes a pressure roller to rotate, a heating belt to form a fixing nip with the pressure roller; and bushings at each end of the heating belt, respectively, to support the heating belt. Each of the bushings includes a side wall outside the each end of the heating belt, and a support member in a direction toward the heating belt with respect to the side wall to support an inner surface of the heating belt, where the support member includes a protruding region downwardly inclined in a direction toward the side wall.Type: ApplicationFiled: March 9, 2021Publication date: February 29, 2024Inventors: Sun Hyung LEE, Sea Chul BAE, Sung Woo KANG
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Patent number: 11803151Abstract: A fuser includes a pressure roller to rotate and a heating belt to form a fixing nip with the pressure roller. The heating belt comprises at each end of the heating belt a bush to support the heating belt, a fixing flange to rotatably support the bush, and a plurality of springs to elastically connect between the bush and the fixing flange, to rotate the bush about an axis passing through a first surface of the bush and a second surface of the bush opposite to the first surface of the bush.Type: GrantFiled: March 10, 2021Date of Patent: October 31, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sung Woo Kang, Sun Hyung Lee, Sea Chul Bae
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Publication number: 20230176518Abstract: A fuser includes a pressure roller to rotate and a heating belt to form a fixing nip with the pressure roller. The heating belt comprises at each end of the heating belt a bush to support the heating belt, a fixing flange to rotatably support the bush, and a plurality of springs to elastically connect between the bush and the fixing flange, to rotate the bush about an axis passing through a first surface of the bush and a second surface of the bush opposite to the first surface of the bush.Type: ApplicationFiled: March 10, 2021Publication date: June 8, 2023Inventors: Sung Woo KANG, Sun Hyung LEE, Sea Chul BAE
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Publication number: 20230048699Abstract: A fusing apparatus includes: a pressing roller to be axially rotated; a fusing belt to rotate by receiving a rotational force from the pressing roller; a pressing member to press toward the pressing roller from the inside of the fusing belt to form a nip in which the printing paper is nipped between the fusing belt and the pressing roller; on the fusing belt or the pressing member, a sliding layer to reduce friction between the fusing belt and the pressing member; and an adhesive layer to adhere the sliding layer to the fusing belt or the pressing member.Type: ApplicationFiled: December 28, 2020Publication date: February 16, 2023Inventors: Sun Hyung LEE, Sea Chul BAE, Jae Hyeok JANG, Jin Gyu KO
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Patent number: 11137701Abstract: A fusing apparatus for an image forming apparatus includes a fusing belt having a sidewall that faces the fusing bel, a guide member, disposed on the sidewall and having a lower portion disposed above a lower portion of the bushing, and a ring member, disposed between the guide member and the fusing belt. The ring member can be deflected toward the sidewall in a gap which is provided below the lower portion of the guide member and between the ring member and the sidewall.Type: GrantFiled: September 25, 2020Date of Patent: October 5, 2021Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Sun-hyung Lee, Sung-woo Kang, Ji-su Park, Sea-chul Bae, Gil-jae You, Seung-jun Lee, Young-hoon Han
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Publication number: 20210011398Abstract: A fusing apparatus for an image forming apparatus includes a fusing belt having a sidewall that faces the fusing bel, a guide member, disposed on the sidewall and having a lower portion disposed above a lower portion of the bushing, and a ring member, disposed between the guide member and the fusing belt. The ring member can be deflected toward the sidewall in a gap which is provided below the lower portion of the guide member and between the ring member and the sidewall.Type: ApplicationFiled: September 25, 2020Publication date: January 14, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Sun-hyung LEE, Sung-woo KANG, Ji-su PARK, Sea-chul BAE, Gil-jae YOU, Seung-jun LEE, Young-hoon HAN
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Patent number: 10831135Abstract: A fusing apparatus for an image forming apparatus includes a rotatable fusing belt, a bushing to guide the rotation of the fusing belt, a ring member provided between the bushing and the fusing belt, and a guide member, provided on an upper portion of a sidewall of the bushing that faces the fusing belt to support an upper portion of the ring member. A gap is provided between a lower portion of the guide member and a lower portion of the sidewall to allow deflection of a lower portion of the ring member toward the sidewall.Type: GrantFiled: December 10, 2019Date of Patent: November 10, 2020Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Sun-hyung Lee, Sung-woo Kang, Ji-su Park, Sea-chul Bae, Gil-jae You, Seung-jun Lee, Young-hoon Han
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Publication number: 20200117123Abstract: A fusing apparatus for an image forming apparatus includes a rotatable fusing belt, a bushing to guide the rotation of the fusing belt, a ring member provided between the bushing and the fusing belt, and a guide member, provided on an upper portion of a sidewall of the bushing that faces the fusing belt to support an upper portion of the ring member. A gap is provided between a lower portion of the guide member and a lower portion of the sidewall to allow deflection of a lower portion of the ring member toward the sidewall.Type: ApplicationFiled: December 10, 2019Publication date: April 16, 2020Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Suh-hyung LEE, Sung-woo KANG, Ji-su PARK, Sea-chul BAE, Gil-jae YOU, Seung-jun LEE, Young-hoon HAN
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Patent number: 10551775Abstract: A fusing apparatus for an image forming apparatus includes a fusing belt which rotates, a bushing guiding the fusing belt, a ring member rotatably coupled to the bushing and in contact with the fusing belt so as to rotate together with the fusing belt, and a sliding guide member, provided between the ring member and the sidewall of the bushing and at least partially disposed above a central axis of the fusing belt. The sliding guide member slidably supports the ring member and protrudes from the sidewall of the bushing such that a continuous gap is provided from a bottom of the sliding guide member to a bottom of the sidewall of the bushing.Type: GrantFiled: September 21, 2018Date of Patent: February 4, 2020Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Sun-hyung Lee, Sung-woo Kang, Ji-su Park, Sea-chul Bae, Gil-jae You, Seung-jun Lee, Young-hoon Han
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Publication number: 20190025737Abstract: A fusing apparatus for an image forming apparatus includes a fusing belt which rotates, a bushing guiding the fusing belt, a ring member rotatably coupled to the bushing and in contact with the fusing belt so as to rotate together with the fusing belt, and a sliding guide member, provided between the ring member and the sidewall of the bushing and at least partially disposed above a central axis of the fusing belt. The sliding guide member slidably supports the ring member and protrudes from the sidewall of the bushing such that a continuous gap is provided from a bottom of the sliding guide member to a bottom of the sidewall of the bushing.Type: ApplicationFiled: September 21, 2018Publication date: January 24, 2019Applicant: S-PRINTING SOLUTION CO., LTD.Inventors: Sun-hyung LEE, Sung-woo Kang, Ji-su Park, Sea-chul Bae, Gil-jae You, Seung-jun Lee, Young-hoon Han
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Patent number: 10120310Abstract: A fusing apparatus and an image forming apparatus includes: a fusing belt; a pressing roller pressed to the fusing belt to form a nib part and rotating the fusing belt; a bushing guiding an edge of the fusing belt; and a ring member rotatably coupled to the bushing and in contact with the edge of the fusing belt that rotates to rotate together with the fusing belt, wherein a first frictional force generated between the edge of the fusing belt and the ring member is larger than a second frictional force generated between the bushing and the ring member.Type: GrantFiled: July 11, 2017Date of Patent: November 6, 2018Assignee: S-PRINTING SOLUTION CO., LTD.Inventors: Sun-hyung Lee, Sung-woo Kang, Ji-su Park, Sea-chul Bae, Gil-jae You, Seung-jun Lee, Young-hoon Han
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Publication number: 20180284668Abstract: A fusing apparatus and an image forming apparatus includes: a fusing belt; a pressing roller pressed to the fusing belt to form a nib part and rotating the fusing belt; a bushing guiding an edge of the fusing belt; and a ring member rotatably coupled to the bushing and in contact with the edge of the fusing belt that rotates to rotate together with the fusing belt, wherein a first frictional force generated between the edge of the fusing belt and the ring member is larger than a second frictional force generated between the bushing and the ring member.Type: ApplicationFiled: July 11, 2017Publication date: October 4, 2018Applicant: S-Printing Solution Co., Ltd.Inventors: Sun-hyung LEE, Sung-woo KANG, Ji-su PARK, Sea-chul BAE, Gil-jae YOU, Seung-jun LEE, Young-hoon HAN
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Patent number: 8249478Abstract: Disclosed are a fusing unit, an image forming apparatus employing the fusing unit and a method of controlling the same. The fusing unit disclosed herein includes a heating belt having a non-conductive outer surface and a pressing roller that allows a print medium to be in pressing contact with the outer surface of the heating belt. A negative voltage or a positive voltage is selectively applied to the pressing roller based on the presence of a print medium between the pressing roller and the heating belt.Type: GrantFiled: October 13, 2009Date of Patent: August 21, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Sea Chul Bae
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Patent number: 8145111Abstract: A fusing device is provided for use in an image forming apparatus to fuse a toner image having a polarity on a printable medium. Such a fusing device comprises: a heating roller which comprises a heat source; a driving roller which is spaced apart from the heating roller; a fusing belt which travels on the heating roller and the driving roller and is heated by the heating roller; a pressing roller which forms a fusing nip against a surface of the fusing belt and presses the printable medium to the fusing belt; and a power supply which applies a voltage to the pressing roller to electrify the printable medium into a polarity opposite to the polarity of the toner image.Type: GrantFiled: September 10, 2008Date of Patent: March 27, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Sea-chul Bae
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Patent number: 7953348Abstract: A fusing device of an image forming apparatus which applies principles of leverage, and an image forming apparatus containing such a device. The fusing device includes a fusing unit having a heating roller and a pressure roller facing each other and which rotate together, a cover which opens and closes the fusing unit, and a pressure and release unit, one end of which is rotatably fixed to a rotating shaft, the pressure and release unit containing a member having a pressuring unit which pressures the pressure roller towards the heating roller when the cover opens and shuts, and a pressured part, which is farther from the rotating shaft than the pressuring part and which receives pressure from the cover.Type: GrantFiled: April 17, 2007Date of Patent: May 31, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Woong-jae Chang, Sea-chul Bae
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Publication number: 20100098469Abstract: Disclosed are fusing unit, an image forming apparatus employing the fusing unit and a method of controlling the same. The fusing unit disclosed herein includes a heating belt having a non-conductive outer surface and a pressing roller that allows a print medium to be in a pressing contact with the outer surface of the heating belt. A negative voltage or a positive voltage is selectively applied to the pressing roller based on the presence of a print medium between the pressing roller and the heating belt.Type: ApplicationFiled: October 13, 2009Publication date: April 22, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Sea Chul BAE
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Publication number: 20090097891Abstract: A fusing device is provided for use in an image forming apparatus to fuse a toner image having a polarity on a printable medium. Such a fusing device comprises: a heating roller which comprises a heat source; a driving roller which is spaced apart from the heating roller; a fusing belt which travels on the heating roller and the driving roller and is heated by the heating roller; a pressing roller which forms a fusing nip against a surface of the fusing belt and presses the printable medium to the fusing belt; and a power supply which applies a voltage to the pressing roller to electrify the printable medium into a polarity opposite to the polarity of the toner image.Type: ApplicationFiled: September 10, 2008Publication date: April 16, 2009Applicant: Samsung Electronics Co., Ltd.Inventor: Sea-chul Bae
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Patent number: 7450898Abstract: A multi-functional peripheral device is provided including a printing unit which develops images that are read from a document. A scanning unit is installed on the printing unit so as to rotate and read document images of the document. A loading unit loads the printing media and includes a plurality of portions configured to separate from each other when the scanning unit rotates.Type: GrantFiled: December 28, 2005Date of Patent: November 11, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Sea-Chul Bae, Byung-Sun Ahn, Dong-Ha Chol, Sung-Won Kim
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Publication number: 20080124146Abstract: An image forming apparatus includes a fixing belt which is rotatably mounted, a support roller which is in contact with an inner surface of the fixing belt to support the fixing belt, a press member which pressurizes a portion of the fixing belt toward a paper, and a press roller which is in pressure contact with the support roller and the press member, the fixing belt being positioned between the press roller and the support roller and between the press roller and the press member. At least one of the support roller and the press roller has a concave shape such that a diameter of both ends of the at least one of the support roller and the press roller is larger than a diameter of a middle portion, and the press member is formed with a curved portion which is convexly formed at a middle portion of the at least one of the support roller and the press roller.Type: ApplicationFiled: June 12, 2007Publication date: May 29, 2008Applicant: Samsung Electronics Co., LtdInventors: Sea Chul BAE, Woong Jae Chang