Patents by Inventor O-hyun Baek
O-hyun Baek 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: 7588310Abstract: An inkjet image forming system and method of increasing a printing speed thereof. According to the system and method, at least a portion of a first lead time of a first process that includes processing printing data in a host and transmitting the printing data to an inkjet image forming apparatus is overlapped with at least a portion of a second lead time of a second process that includes performing a maintenance operation on a printhead using a maintenance unit, thereby increasing the printing speed of the inkjet image forming system.Type: GrantFiled: June 30, 2006Date of Patent: September 15, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: O-hyun Baek, Masahiko Habuka
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Publication number: 20070070095Abstract: An inkjet image forming system and method of increasing a printing speed thereof. According to the system and method, at least a portion of a first lead time of a first process that includes processing printing data in a host and transmitting the printing data to an inkjet image forming apparatus is overlapped with at least a portion of a second lead time of a second process that includes performing a maintenance operation on a printhead using a maintenance unit, thereby increasing the printing speed of the inkjet image forming system.Type: ApplicationFiled: June 30, 2006Publication date: March 29, 2007Inventors: O-hyun Baek, Masahiko Habuka
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Patent number: 6877842Abstract: A bubble-jet type ink-jet printhead is provided. When forming a doughnut-shaped bubble, the printhead allows bubbles to be first grown around the heater that surrounds the central axis of the nozzle at regular angles followed by the formation of another bubble between the earlier formed bubbles, thereby forming a larger doughnut-shaped bubble. Accordingly, this can prevent the formation of an unbalanced doughnut-shaped bubble due to variations in local resistance of the heater, which may be caused by a process error. Furthermore, the printhead allows the center of the doughnut-shaped bubble to be set on the central axis of the nozzle thus causing a droplet formed within the doughnut-shaped bubble to be ejected in a normal manner, that is, in a direction vertical to the nozzle plate.Type: GrantFiled: June 17, 2002Date of Patent: April 12, 2005Assignee: Samsung Electronics Co., LTDInventors: Jae-ho Moon, Dae-soon Lim, O-hyun Baek
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Patent number: 6761433Abstract: A bubble-jet type ink-jet printhead is provided. The ink-jet printhead includes: a substrate; a nozzle plate including a plurality of nozzles, which is separated a predetermined space from the substrate; walls for closing the space between the substrate and the nozzle plate and then forming a common chamber between the substrate and the nozzle plate; a plurality of resistive layers, formed on the substrate within the common chamber corresponding to the plurality of nozzles, each resistive layer encircling the central axis passing through the center of each nozzle; a plurality of pairs of wiring layers formed on the substrate, each pair of wiring layers being connecting to each resistive layer and extending to the outside of the common chamber; and a plurality of pads which are disposed at the outside of the common chamber on the substrate and electrically connected to the wiring layers.Type: GrantFiled: April 17, 2001Date of Patent: July 13, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-ho Moon, O-hyun Baek, Jeong-seon Kim
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Patent number: 6739711Abstract: An ink cartridge including an ink storage chamber in which ink is stored, a cover to cover the upper portion of the ink storage chamber and a head to eject ink droplets in the ink storage chamber onto a recording medium, wherein the cover includes an inner cover to cover the upper portion of the ink storage chamber and an outer cover that seals the ink storage chamber and the inner cover, and is positioned at a predetermined distance above the inner cover. Also provided are plates to form zigzag air passages by blocking a space between the inner cover and the outer cover. With the ink cartridge according to the present invention, it is possible to satisfactorily suppress the backward flow of ink contained in an ink storage chamber due to overheating of or careless treatment of the ink cartridge. Even if ink flows backward from the ink storage chamber, it is stored in an ink storage space, thus preventing the clogging of an air passage.Type: GrantFiled: May 1, 2002Date of Patent: May 25, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Young-su Lee, Jeong-seon Kim, O-hyun Baek, Jae-cheol Lee, Moo-youl Kim, Sik-sun Choi, Jong-suk Seo
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Publication number: 20030179266Abstract: A bubble-jet type ink-jet printhead is provided. The ink-jet printhead includes: a substrate; a nozzle plate including a plurality of nozzles, which is separated a predetermined space from the substrate; walls for closing the space between the substrate and the nozzle plate and then forming a common chamber between the substrate and the nozzle plate; a plurality of resistive layers, formed on the substrate within the common chamber corresponding to the plurality of nozzles, each resistive layer encircling the central axis passing through the center of each nozzle; a plurality of pairs of wiring layers formed on the substrate, each pair of wiring layers being connecting to each resistive layer and extending to the outside of the common chamber; and a plurality of pads which are disposed at the outside of the common chamber on the substrate and electrically connected to the wiring layers.Type: ApplicationFiled: March 12, 2003Publication date: September 25, 2003Inventors: Jae-Ho Moon, O-Hyun Baek, Jeong-Seon Kim
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Publication number: 20030058315Abstract: An ink cartridge including an ink storage chamber in which ink is stored, a cover to cover the upper portion of the ink storage chamber and a head to eject ink droplets in the ink storage chamber onto a recording medium, wherein the cover includes an inner cover to cover the upper portion of the ink storage chamber and an outer cover that seals the ink storage chamber and the inner cover, and is positioned at a predetermined distance above the inner cover. Also provided are plates to form zigzag air passages by blocking a space between the inner cover and the outer cover. With the ink cartridge according to the present invention, it is possible to satisfactorily suppress the backward flow of ink contained in an ink storage chamber due to overheating of or careless treatment of the ink cartridge. Even if ink flows backward from the ink storage chamber, it is stored in an ink storage space, thus preventing the clogging of an air passage.Type: ApplicationFiled: May 1, 2002Publication date: March 27, 2003Applicant: Samsung Electronics Co. LtdInventors: Young-Su Lee, Jeong-Seon Kim, O-Hyun Baek, Jae-Cheol Lee, Moo-Youl Kim, Sik-Sun Choi, Jong-Suk Seo
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Publication number: 20020175973Abstract: A bubble-jet type ink-jet printhead is provided. When forming a doughnut-shaped bubble, the printhead allows bubbles to be first grown around the heater that surrounds the central axis of the nozzle at regular angles followed by the formation of another bubble between the earlier formed bubbles, thereby forming a larger doughnut-shaped bubble. Accordingly, this can prevent the formation of an unbalanced doughnut-shaped bubble due to variations in local resistance of the heater, which may be caused by a process error. Furthermore, the printhead allows the center of the doughnut-shaped bubble to be set on the central axis of the nozzle thus causing a droplet formed within the doughnut-shaped bubble to be ejected in a normal manner, that is, in a direction vertical to the nozzle plate.Type: ApplicationFiled: June 17, 2002Publication date: November 28, 2002Inventors: Jae-ho Moon, Dae-soon Lim, O-hyun Baek
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Publication number: 20020149649Abstract: A bubble-jet type ink-jet printhead is provided. When forming a doughnut-shaped bubble, the printhead allows bubbles to be first grown around the heater that surrounds the central axis of the nozzle at regular angles followed by the formation of another bubble between the earlier formed bubbles, thereby forming a larger doughnut-shaped bubble. Accordingly, this can prevent the formation of an unbalanced doughnut-shaped bubble due to variations in local resistance of the heater, which may be caused by a process error. Furthermore, the printhead allows the center of the doughnut-shaped bubble to be set on the central axis of the nozzle thus causing a droplet formed within the doughnut-shaped bubble to be ejected in a normal manner, that is, in a direction vertical to the nozzle plate.Type: ApplicationFiled: June 17, 2002Publication date: October 17, 2002Inventors: Jae-ho Moon, Dae-soon Lim, O-hyun Baek
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Publication number: 20020012027Abstract: A bubble-jet type ink-jet printhead is provided. When forming a doughnut-shaped bubble, the printhead allows bubbles to be first grown around the heater that surrounds the central axis of the nozzle at regular angles followed by the formation of another bubble between the earlier formed bubbles, thereby forming a larger doughnut-shaped bubble. Accordingly, this can prevent the formation of an unbalanced doughnut-shaped bubble due to variations in local resistance of the heater, which may be caused by a process error. Furthermore, the printhead allows the center of the doughnut-shaped bubble to be set on the central axis of the nozzle thus causing a droplet formed within the doughnut-shaped bubble to be ejected in a normal manner, that is, in a direction vertical to the nozzle plate.Type: ApplicationFiled: April 18, 2001Publication date: January 31, 2002Inventors: Jae-Ho Moon, Dae-Soon Lim, O-Hyun Baek
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Publication number: 20020005878Abstract: A bubble-jet type ink-jet printhead is provided. The ink-jet printhead includes: a substrate; a nozzle plate including a plurality of nozzles, which is separated a predetermined space from the substrate; walls for closing the space between the substrate and the nozzle plate and then forming a common chamber between the substrate and the nozzle plate; a plurality of resistive layers, formed on the substrate within the common chamber corresponding to the plurality of nozzles, each resistive layer encircling the central axis passing through the center of each nozzle; a plurality of pairs of wiring layers formed on the substrate, each pair of wiring layers being connecting to each resistive layer and extending to the outside of the common chamber; and a plurality of pads which are disposed at the outside of the common chamber on the substrate and electrically connected to the wiring layers.Type: ApplicationFiled: April 17, 2001Publication date: January 17, 2002Inventors: Jae-ho Moon, O-hyun Baek, Jeong-Seon Kim