Patents by Inventor Chun-seung Yang
Chun-seung Yang 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: 8989650Abstract: A printing medium alignment device and an image forming apparatus having the same, the image forming apparatus includes a printing medium supply unit to supply a printing medium, a printing unit to print an image on the printing medium supplied from the printing medium supply unit, and a printing medium alignment device to align the printing medium fed toward the printing unit. The printing medium alignment device includes: a register roller; an idle roller to form a nip with the register roller, to feed the printing medium to the printing unit; a register to move to a first position to block the printing medium from entering the nip, to align the printing medium, and to move to a second position to allow the printing medium to enter the nip; and a shutter roller mounted in the register shutter. When the register shutter is in the second position, the shutter roller rolls while in contact with the printing medium, to decrease a friction between the printing medium and the register shutter.Type: GrantFiled: June 11, 2013Date of Patent: March 24, 2015Assignee: Samsung Electronics Co., Ltd.Inventor: Chun Seung Yang
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Publication number: 20130279961Abstract: A printing medium alignment device and an image forming apparatus having the same, the image forming apparatus includes a printing medium supply unit to supply a printing medium, a printing unit to print an image on the printing medium supplied from the printing medium supply unit, and a printing medium alignment device to align the printing medium fed toward the printing unit. The printing medium alignment device includes: a register roller; an idle roller to form a nip with the register roller, to feed the printing medium to the printing unit; a register to move to a first position to block the printing medium from entering the nip, to align the printing medium, and to move to a second position to allow the printing medium to enter the nip; and a shutter roller mounted in the register shutter. When the register shutter is in the second position, the shutter roller rolls while in contact with the printing medium, to decrease a friction between the printing medium and the register shutter.Type: ApplicationFiled: June 11, 2013Publication date: October 24, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Chun Seung YANG
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Patent number: 8478182Abstract: A printing medium alignment device and an image forming apparatus having the same, the image forming apparatus includes a printing medium supply unit to supply a printing medium, a printing unit to print an image on the printing medium supplied from the printing medium supply unit, and a printing medium alignment device to align the printing medium fed toward the printing unit. The printing medium alignment device includes: a register roller; an idle roller to form a nip with the register roller, to feed the printing medium to the printing unit; a register shutter to move to a first position to block the printing medium from entering the nip, to align the printing medium, and to move to a second position to allow the printing medium to enter the nip; and a shutter roller mounted in the register shutter. When the register shutter is in the second position, the shutter roller rolls while in contact with the printing medium, to decrease a friction between the printing medium and the register shutter.Type: GrantFiled: April 7, 2008Date of Patent: July 2, 2013Assignee: Samsung Electronics Co., Ltd.Inventor: Chun Seung Yang
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Patent number: 8387980Abstract: An image forming apparatus including: a plurality of medium trays to stack a print medium having an image formed thereon by an image forming unit; a driving source to momentarily apply a direction switching signal; a selector to select a carrying path of the print medium having the image formed thereon, the carrying path directing the print medium to one of the plurality of medium trays; and a switch unit connected to the driving source to set a position of the selector in order to direct the print medium along the carrying path according to the direction switching signal. Accordingly, power is only used momentarily to direct the print medium to a medium tray from among a plurality of medium trays.Type: GrantFiled: November 20, 2008Date of Patent: March 5, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Hoon Kang, Chun-seung Yang, Myung-song Jung, Jun-young Lee
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Patent number: 8276912Abstract: A medium path converting unit to reduce electrical stress, an image forming apparatus including the same and a control method thereof. The medium path converting unit to convert a moving path of a print medium can include a guiding member movable to a first position to guide the print medium to a first path and to a second position to guide the print medium to a second path, an actuator to move the guide member from the first position to the second position, an actuator solenoid to drive the actuator, and a locking unit to lock the actuator to allow the guiding member to maintain the second position.Type: GrantFiled: June 10, 2009Date of Patent: October 2, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Chun-Seung Yang
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Publication number: 20100044957Abstract: A medium path converting unit to reduce electrical stress, an image forming apparatus including the same and a control method thereof. The medium path converting unit to convert a moving path of a print medium can include a guiding member movable to a first position to guide the print medium to a first path and to a second position to guide the print medium to a second path, an actuator to move the guide member from the first position to the second position, an actuator solenoid to drive the actuator, and a locking unit to lock the actuator to allow the guiding member to maintain the second position.Type: ApplicationFiled: June 10, 2009Publication date: February 25, 2010Applicant: Samsung Electronics Co., LtdInventor: Chun-Seung YANG
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Publication number: 20090185198Abstract: An image forming apparatus including: a plurality of medium trays to stack a print medium having an image formed thereon by an image forming unit; a driving source to momentarily apply a direction switching signal; a selector to select a carrying path of the print medium having the image formed thereon, the carrying path directing the print medium to one of the plurality of medium trays; and a switch unit connected to the driving source to set a position of the selector in order to direct the print medium along the carrying path according to the direction switching signal. Accordingly, power is only used momentarily to direct the print medium to a medium tray from among a plurality of medium trays.Type: ApplicationFiled: November 20, 2008Publication date: July 23, 2009Applicant: Samsung Electronics Co., LtdInventors: Hoon KANG, Chun-seung Yang, Myung-song Jung, Jun-young Lee
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Publication number: 20090010696Abstract: An image forming apparatus includes a printing medium feeder which feeds a printing medium a developing cartridge which forms an image on the printing medium; a fusing unit which fuses the image on the printing medium; and a contact preventing unit between the developing cartridge and the fusing unit and contacts opposite sides of the printing medium to prevent contact between the printing medium and the developing cartridge.Type: ApplicationFiled: March 31, 2008Publication date: January 8, 2009Applicant: Samsung Electronics Co., Ltd.Inventor: Chun-seung YANG
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Publication number: 20080310906Abstract: A printing medium alignment device and an image forming apparatus having the same, the image forming apparatus includes a printing medium supply unit to supply a printing medium, a printing unit to print an image on the printing medium supplied from the printing medium supply unit, and a printing medium alignment device to align the printing medium fed toward the printing unit. The printing medium alignment device includes: a register roller; an idle roller to form a nip with the register roller, to feed the printing medium to the printing unit; a register to move to a first position to block the printing medium from entering the nip, to align the printing medium, and to move to a second position to allow the printing medium to enter the nip; and a shutter roller mounted in the register shutter. When the register shutter is in the second position, the shutter roller rolls while in contact with the printing medium, to decrease a friction between the printing medium and the register shutter.Type: ApplicationFiled: April 7, 2008Publication date: December 18, 2008Applicant: Samsung Electronics Co., Ltd.Inventor: CHUN SEUNG YANG
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Patent number: 7434801Abstract: A versatile paper feeding device of an image forming apparatus includes a pick-up roller, a paper support tray under the pick-up roller to stack paper on, a paper support expansion tray to be able to freely slide toward or away from the paper support tray to support the trailing edge of the paper, a forward positioned paper alignment guide on the paper support tray to align a leading end portion of the paper, and a second paper alignment member formed on the paper support expansion tray to align a following end portion of the paper. When the versatile paper feeding device is used to print images on paper of various sizes, the paper can be properly positioned and straightly fed without skewing.Type: GrantFiled: August 8, 2006Date of Patent: October 14, 2008Assignee: Samsung Electronics Co., Ltd.Inventor: Chun-seung Yang
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TWIST PREVENTING MEDIUM PICKUP UNIT AND AN IMAGE FORMING APPARATUS HAVING THE SAME INSTALLED THEREIN
Publication number: 20080075519Abstract: A medium pickup unit including a pickup roller, having a circumferential section and a non-circumferential section, to rotate and to pick up a medium due to friction between the circumferential section and the medium, idle rollers respectively disposed at opposite ends of the pickup roller to maintain an orientation of the medium once the non-circumferential section of the pickup roller faces the medium during the rotation of the pickup roller, and a connecting unit coupled to the pickup roller to cause the idle rollers to rotate together.Type: ApplicationFiled: April 19, 2007Publication date: March 27, 2008Applicant: Samsung Electronics Co., LtdInventor: Chun-seung YANG -
Publication number: 20070090587Abstract: A versatile paper feeding device of an image forming apparatus includes a pick-up roller, a paper support tray under the pick-up roller to stack paper on, a paper support expansion tray to be able to freely slide toward or away from the paper support tray to support the trailing edge of the paper, a forward positioned paper alignment guide on the paper support tray to align a leading end portion of the paper, and a second paper alignment member formed on the paper support expansion tray to align a following end portion of the paper. When the versatile paper feeding device is used to print images on paper of various sizes, the paper can be properly positioned and straightly fed without skewing.Type: ApplicationFiled: August 8, 2006Publication date: April 26, 2007Applicant: Samsung Electronics Co., Ltd.Inventor: Chun-seung Yang
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Patent number: 6773182Abstract: A paper cassette adapted for use in a printing device has a cassette body connected to a body of the printing device, a supporting plate having a first end being pivotally disposed in the cassette body to support printing paper, a spring elastically supporting a lower side of the supporting plate relative to a bottom of the cassette body, a finger member disposed on the cassette body to limit a rising height of the supporting plate and separating the printing paper sheet by sheet, and a shock absorbing portion guiding a rising and lowering movement of the supporting plate and lessening a shock exerted on the finger member when the supporting plate stacked with the printing paper rises from a lowered state by reducing a rising speed of the supporting plate that is raised by the spring.Type: GrantFiled: October 28, 2002Date of Patent: August 10, 2004Assignee: Samsung Electronics Co., Ltd.Inventor: Chun-seung Yang
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Publication number: 20040135310Abstract: A paper registration apparatus for a duplex printer which performs side registration of a sheet of paper before the paper is transferred toward a feed roller to print an image on a rear side of the paper after a front side of the paper is printed. The apparatus includes a lower guide plate supporting the paper thereon and having a groove formed at one side, a side wall guide vertically installed at the side of the groove of the lower guide plate parallel to a direction of a paper transfer route to perform a side registration of the sheet of paper, and a duplex transfer roller installed perpendicular to the direction of the paper transfer route.Type: ApplicationFiled: July 31, 2003Publication date: July 15, 2004Inventor: Chun-Seung Yang
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Publication number: 20030091378Abstract: A paper cassette adapted for use in a printing device has a cassette body connected to a body of the printing device, a supporting plate having a first end being pivotally disposed in the cassette body to support printing paper, a spring elastically supporting a lower side of the supporting plate relative to a bottom of the cassette body, a finger member disposed on the cassette body to limit a rising height of the supporting plate and separating the printing paper sheet by sheet, and a shock absorbing portion guiding a rising and lowering movement of the supporting plate and lessening a shock exerted on the finger member when the supporting plate stacked with the printing paper rises from a lowered state by reducing a rising speed of the supporting plate that is raised by the spring.Type: ApplicationFiled: October 28, 2002Publication date: May 15, 2003Applicant: Samsung Electronics Co., Ltd.Inventor: Chun-Seung Yang