Patents by Inventor Karp-Sik Youn
Karp-Sik Youn 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: 8752932Abstract: An inkjet image forming apparatus includes a main body frame, a medium supplying unit which is coupled to the main body frame and supplying a print medium, an image forming cartridge which is coupled to the main body frame, forms an image on the supplied print medium, and including a nozzle to eject ink, and a wiping assembly which wipes the nozzle. The wiping assembly includes a wiping sheet storage unit in which the wiping sheet is stored as being wound, a transfer shuttle which moves along arrangement of the nozzle by a driving force of a driving source, a pressing member which is provided in the transfer shuttle and presses a region of the wiping sheet against the nozzle to perform wiping using the wiping sheet, and a wiping sheet support unit which is provided in the transfer shuttle and restricts move of the wiping sheet while the nozzle is wiped.Type: GrantFiled: February 17, 2010Date of Patent: June 17, 2014Assignee: Samsung Electronics Co., LtdInventors: Youn-gun Jung, Karp-sik Youn, Young-su Lee, Gun Heo
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Patent number: 8556261Abstract: A power transmission, which transmits a driving force from a driving roller to a driven roller by using a friction roller. The power transmission includes a driving roller, a driven roller spaced apart from the driving roller, and a friction roller to transmit a driving force from the driving roller to the driven roller. The friction roller is disposed above a line connecting between centers of the driving roller and the driven roller. With this construction, the friction roller transmits the driving force in a state of being interposed between the driving rollers and the driven rollers by rotation thereof, thereby allowing the power transmission to have a simplified structure, which does not require a separate pressing spring, and at the same time, to generate a minimum amount of power loss.Type: GrantFiled: December 21, 2012Date of Patent: October 15, 2013Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Karp-sik Youn, Jin-ho Park
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Patent number: 8444251Abstract: A scrapping unit and an image forming apparatus having the same, and cleaning methods thereof to improve a maintenance performance. The scrapping unit cleans a polluted member disposed in an image forming apparatus and stained by a polluting material. The scrapping unit may include an endless belt to circulate between an exposed position where a surface of the endless belt is exposed toward the polluted member, and a non-exposed position where the surface of the endless belt is not exposed with respect to the polluted member, and a belt support frame which includes a belt support surface to support the endless belt so that the endless belt can be unfolded in the exposed position, and a storing space to store the endless belt so that the endless belt can be folded in the non-exposed position.Type: GrantFiled: May 24, 2010Date of Patent: May 21, 2013Assignee: Samsung Electronics Co., LtdInventors: Gun Heo, Karp-sik Youn, Young-su Lee, Youn-gun Jung
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Publication number: 20130114983Abstract: A power transmission, which transmits a driving force from a driving roller to a driven roller by using a friction roller. The power transmission includes a driving roller, a driven roller spaced apart from the driving roller, and a friction roller to transmit a driving force from the driving roller to the driven roller. The friction roller is disposed above a line connecting between centers of the driving roller and the driven roller. With this construction, the friction roller transmits the driving force in a state of being interposed between the driving rollers and the driven rollers by rotation thereof, thereby allowing the power transmission to have a simplified structure, which does not require a separate pressing spring, and at the same time, to generate a minimum amount of power loss.Type: ApplicationFiled: December 21, 2012Publication date: May 9, 2013Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Karp-sik YOUN, Jin-ho PARK
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Patent number: 8356707Abstract: A power transmission, which transmits a driving force from a driving roller to a driven roller by using a friction roller. The power transmission includes a driving roller, a driven roller spaced apart from the driving roller, and a friction roller to transmit a driving force from the driving roller to the driven roller. The friction roller is disposed above a line connecting between centers of the driving roller and the driven roller. With this construction, the friction roller transmits the driving force in a state of being interposed between the driving rollers and the driven rollers by rotation thereof, thereby allowing the power transmission to have a simplified structure, which does not require a separate pressing spring, and at the same time, to generate a minimum amount of power loss.Type: GrantFiled: February 20, 2007Date of Patent: January 22, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Karp-sik Youn, Jin-ho Park
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Patent number: 8177325Abstract: An inkjet image forming apparatus includes a device to protect an ink sensing device operated without use of a separate drive source. The inkjet image forming apparatus includes at least one protecting device having a protecting member to protect the ink sensing device from impurities or to release the ink sensing device from protection, the protecting member being operated in linkage with the maintenance device to thereby be moved between the first position and the second position.Type: GrantFiled: May 8, 2009Date of Patent: May 15, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Young Choon Kim, Karp Sik Youn, Dong Woo Ha
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Patent number: 8152274Abstract: An image forming apparatus that provides an easy installation and separation of a print head thereto and therefrom. The image forming apparatus can include a body, a print head including a nozzle part having a length at least a width as wide as a printable printing medium, a head mount provided at the body to mount the print head, at least one first connector provided at the head mount, and at least one second connector provided at the print head to correspond to the at least one first connector. The first connector and second connector are connected with each other as the print head is mounted to the head mount.Type: GrantFiled: November 20, 2008Date of Patent: April 10, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Young Choon Kim, Karp Sik Youn, Dong Woo Ha
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Patent number: 8070254Abstract: A printing head cleaning apparatus usable with an image forming apparatus includes a spraying unit to spray a quantity of cleaning solution using a sprayer and a cleaning shuttle to carry the spraying unit. The spraying unit includes a cleaning solution tank to store the cleaning solution sprayed by the sprayer, a spraying cam to operate the sprayer to selectively spray a quantity of the cleaning solution, and a cam driving member to cause the spraying cam to rotate according to movement of the cleaning shuttle.Type: GrantFiled: February 27, 2009Date of Patent: December 6, 2011Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Jung-dae Heo, Karp-sik Youn, Dong-woo Ha
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Patent number: 8052277Abstract: An inkjet image forming apparatus having an array type print head to stably deliver a printing medium through a printing zone. The inkjet image forming apparatus includes an array type print head including a nozzle part to discharge ink to a printing zone, a first rolling unit having a first nip portion to nip the printing medium, wherein the first nip portion is disposed before the printing zone to deliver the printing medium to the printing zone, and a second rolling unit having a second nip portion to nip the printing medium, wherein the second nip portion is disposed downstream of the first rolling unit in a delivery direction of the printing medium. A distance between the first nip portion and the second nip portion is less than or equal to 3 inches.Type: GrantFiled: May 28, 2009Date of Patent: November 8, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Young Choon Kim, Heon Soo Park, Chang Shin Park, Karp Sik Youn, Myung Song Jung
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Publication number: 20110043568Abstract: A scrapping unit and an image forming apparatus having the same, and cleaning methods thereof to improve a maintenance performance. The scrapping unit cleans a polluted member disposed in an image forming apparatus and stained by a polluting material. The scrapping unit may include an endless belt to circulate between an exposed position where a surface of the endless belt is exposed toward the polluted member, and a non-exposed position where the surface of the endless belt is not exposed with respect to the polluted member, and a belt support frame which includes a belt support surface to support the endless belt so that the endless belt can be unfolded in the exposed position, and a storing space to store the endless belt so that the endless belt can be folded in the non-exposed position.Type: ApplicationFiled: May 24, 2010Publication date: February 24, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Gun Heo, Karp-sik Youn, Young-su Lee, Youn-gun Jung
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Publication number: 20110043567Abstract: An inkjet image forming apparatus includes a main body frame, a medium supplying unit which is coupled to the main body frame and supplying a print medium, an image forming cartridge which is coupled to the main body frame, forms an image on the supplied print medium, and including a nozzle to eject ink, and a wiping assembly which wipes the nozzle. The wiping assembly includes a wiping sheet storage unit in which the wiping sheet is stored as being wound, a transfer shuttle which moves along arrangement of the nozzle by a driving force of a driving source, a pressing member which is provided in the transfer shuttle and presses a region of the wiping sheet against the nozzle to perform wiping using the wiping sheet, and a wiping sheet support unit which is provided in the transfer shuttle and restricts move of the wiping sheet while the nozzle is wiped.Type: ApplicationFiled: February 17, 2010Publication date: February 24, 2011Applicant: Samsung Electronics Co., LtdInventors: Youn-gun JUNG, Karp-sik Youn, Young-su Lee, Gun Heo
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Publication number: 20110011337Abstract: An image forming apparatus including a medium feeding unit to supply a print medium, a medium coating assembly to coat the print medium with a coating liquid, and an image forming unit to form an image on the coated print medium, the medium coating assembly including a container to store the coating liquid, a coating unit to coat the print medium with the coating liquid, a channel to guide the coating liquid to move between the container and the coating unit, and a controller to selectively control the coating liquid to be supplied from the container to the coating unit and to be recovered from the coating unit to the container through the same channel.Type: ApplicationFiled: January 29, 2010Publication date: January 20, 2011Applicant: Samsung Electronics Co., LtdInventors: Il-ju MUN, Karp-sik Youn, Dong-woo Ha, In-su Lee, Young-choon Kim
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Patent number: 7859728Abstract: A two-side scanning apparatus and a method of controlling the two-side scanning apparatus including a sheet feeding roller train installed on a first side of a white roller to transfer a sheet to the white roller and including two rollers contacting each other, a sheet discharging roller train installed on a second side of the white roller opposite the sheet feeding roller train, a sheet reversing path surrounding a circumferential surface of the white roller to receive and guide the sheet being transferred from the sheet discharging roller train back between the white roller and an image sensor, and a sheet guide plate installed between the white roller and the sheet discharging roller train to pivot at a predetermined angle and to guide the sheet toward the sheet reversing path when the sheet is transferred from the sheet discharging roller train toward the white roller.Type: GrantFiled: November 17, 2005Date of Patent: December 28, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Young-jung Yun, Karp-sik Youn
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Publication number: 20100171789Abstract: Provided is a nozzle capping device of an inkjet printer including a cap covering a nozzle chip of an inkjet head, and a humidity supply unit supplying humidity to an inner space formed by the cap covering the nozzle chip and the inkjet head.Type: ApplicationFiled: September 30, 2009Publication date: July 8, 2010Applicant: Samsung Electronics Co., LtdInventors: Il-jun MUN, Karp-sik YOUN, Sung-wook KANG
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Patent number: 7740336Abstract: An array type multi-pass inkjet printer head and an operating method thereof. The array type inkjet printer includes an image dividing unit to divide an image to be printed into a plurality of images, a printing unit having a head and to print one of the plurality of divided images on a printing medium using the head, the head being formed in a lateral direction and having a plurality of nozzles disposed in a longitudinal direction thereof, a feedback unit to reversely move the printing medium to a preceding end of the printing unit after the one of the plurality of divided images is printed by the printing unit, and a control unit to control the printing unit to print a divided image next to the printed one image on the reversely printing medium.Type: GrantFiled: February 26, 2007Date of Patent: June 22, 2010Assignee: Samsung Electronics Co. Ltd.Inventors: Soo-hyun Kim, Masahiko Habuka, Heon-soo Park, Karp-sik Youn, Hee-yuel Roh, Jung-dae Heo
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Publication number: 20100066793Abstract: An inkjet image forming apparatus having an array type print head to stably deliver a printing medium through a printing zone. The inkjet image forming apparatus includes an array type print head including a nozzle part to discharge ink to a printing zone, a first rolling unit having a first nip portion to nip the printing medium, wherein the first nip portion is disposed before the printing zone to deliver the printing medium to the printing zone, and a second rolling unit having a second nip portion to nip the printing medium, wherein the second nip portion is disposed downstream of the first rolling unit in a delivery direction of the printing medium. A distance between the first nip portion and the second nip portion is less than or equal to 3 inches.Type: ApplicationFiled: May 28, 2009Publication date: March 18, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Young Choon KIM, Heon Soo PARK, Chan Shin PARK, Karp Sik YOUN, Myung Song JUNG
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Publication number: 20100002046Abstract: An inkjet image forming apparatus includes a device to protect an ink sensing device operated without use of a separate drive source. The inkjet image forming apparatus includes at least one protecting device having a protecting member to protect the ink sensing device from impurities or to release the ink sensing device from protection, the protecting member being operated in linkage with the maintenance device to thereby be moved between the first position and the second position.Type: ApplicationFiled: May 8, 2009Publication date: January 7, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Young Choon Kim, Karp Sik Youn, Dong Woo Ha
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Publication number: 20090315940Abstract: An inkjet image forming apparatus including an exposure time of ink attached to nozzles is determined considering various factors including a capping/uncapping time of a print head, a time interval of a powering operation, and a time interval of a printing operation, and then a washing mode to be performed is selected out of a plurality of washing modes with different washing methods in accordance with the exposure time of the ink. Therefore, washing of a print head can be performed more efficiently depending on a condition of ink attached to the nozzles. In addition, a viscosity of the attached ink can be weakened by heating the print head while performing the washing mode. Especially, when washing the print head by an ultrasonic washing mode, a washing energy can be concentrated on a removal of the ink, thereby improving washing efficiency.Type: ApplicationFiled: December 12, 2008Publication date: December 24, 2009Applicant: Samsung Electronics Co., LtdInventors: Jee Hoon CHUN, Karp Sik Youn
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Publication number: 20090303280Abstract: A printing head cleaning apparatus usable with an image forming apparatus includes a spraying unit to spray a quantity of cleaning solution using a sprayer and a cleaning shuttle to carry the spraying unit. The spraying unit includes a cleaning solution tank to store the cleaning solution sprayed by the sprayer, a spraying cam to operate the sprayer to selectively spray a quantity of the cleaning solution, and a cam driving member to cause the spraying cam to rotate according to movement of the cleaning shuttle.Type: ApplicationFiled: February 27, 2009Publication date: December 10, 2009Applicant: Samsung Electronics Co., LtdInventors: Jung-dae HEO, Karp-sik Youn, Dong-woo Ha
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Patent number: 7566126Abstract: A one-molding frame of an image forming apparatus includes a feeding part to feed sheets of paper one by one, a printing unit with a printing module provided along a paper feeding passage to form an image on the paper fed from the feeding module, and an ejecting unit with an ejecting module to eject and stack the paper after the printing unit forms the image on the paper. The printing module includes an array type inkjet head with a nozzle unit having a length corresponding to a width of the paper, and the printing unit includes at least one aligning mark to align the inkjet head. The one-molding frame improves an alignment precision between the one-molding frame and the inkjet head and a head gap precision between the inkjet head and the paper. Further, a manufacturing cost of the image forming apparatus can be reduced by employing the one-molding frame.Type: GrantFiled: September 14, 2006Date of Patent: July 28, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-woo Ha, Karp-sik Youn