Patents by Inventor Jin Kwon Chun
Jin Kwon Chun 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: 10120299Abstract: Provided are an light scanning device capable of adjusting the position of optics and an image forming apparatus including the light scanning device. The light scanning device includes first and second light sources configured to emit first and second light beams, respectively; optics including first and second lenses for transmitting the first and second light beams therethrough and a lens holder configured to support the second lens; and a housing configured to support the first and second light sources and the optics, wherein the first and second light sources and the first lens are supported to be fixed to the housing, and the second lens is supported to be able to move with respect to the first lens.Type: GrantFiled: May 24, 2017Date of Patent: November 6, 2018Assignee: S-PRINTING SOLUTION CO., LTD.Inventors: Heon-hee Lim, Han-sung Lee, Jin-kwon Chun, Sung-dae Kim
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Publication number: 20170343923Abstract: Provided are an light scanning device capable of adjusting the position of optics and an image forming apparatus including the light scanning device. The light scanning device includes first and second light sources configured to emit first and second light beams, respectively; optics including first and second lenses for transmitting the first and second light beams therethrough and a lens holder configured to support the second lens; and a housing configured to support the first and second light sources and the optics, wherein the first and second light sources and the first lens are supported to be fixed to the housing, and the second lens is supported to be able to move with respect to the first lens.Type: ApplicationFiled: May 24, 2017Publication date: November 30, 2017Applicant: S-PRINTING SOLUTION CO., LTD.Inventors: Heon-hee LIM, Han-sung LEE, Jin-kwon CHUN, Sung-dae KIM
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Patent number: 9429748Abstract: A light scanning unit includes a light source to emit a light beam; a polygonal mirror to deflect the light beam in a main scanning direction; and an imaging optical system to image the light beam onto a scanning surface. The polygonal mirror includes a plurality of reflection surfaces that are formed in an outer portion of the polygonal mirror and rotate around a rotational axis and an internal mirror surface that defines a hole. A ratio of an internal diameter d to an outer diameter D satisfies 0.1?d/D?0.3. The polygonal mirror is adhered to a motor unit that supports and rotates the polygonal mirror, using an adhesive. The internal mirror surface of the polygonal mirror defining the hole is point-bonded to the motor unit using the adhesive, and the point-bonding is conducted in a direction toward a corner of the reflection surfaces.Type: GrantFiled: March 14, 2014Date of Patent: August 30, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin-kwon Chun, Jae-hwan Yoo, Won-young Cho, Heon-hee Lim, Ho-hyun Hwang
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Patent number: 9075339Abstract: A polygon mirror assembly, a light scanning unit employing the polygon mirror assembly, and an image forming apparatus. The polygon mirror assembly includes a polygon mirror formed of a plastic material and having a plurality of reflection surfaces; and a motor unit to support and rotate the polygon mirror, where the polygon mirror is coupled to the motor unit by using an adhesive material.Type: GrantFiled: September 5, 2014Date of Patent: July 7, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Heon-hee Lim, Jae-hwan Yoo, Jin-kwon Chun, Jong-wuk Ku
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Publication number: 20140376966Abstract: A polygon mirror assembly, a light scanning unit employing the polygon mirror assembly, and an image forming apparatus. The polygon mirror assembly includes a polygon mirror formed of a plastic material and having a plurality of reflection surfaces; and a motor unit to support and rotate the polygon mirror, where the polygon mirror is coupled to the motor unit by using an adhesive material.Type: ApplicationFiled: September 5, 2014Publication date: December 25, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Heon-hee Lim, Jae-hwan Yoo, Jin-kwon Chun, Jong-wuk Ku
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Patent number: 8854409Abstract: An image forming apparatus including a plurality of developers and optical scanners, each of the optical scanners having a light source and a light reflecting unit and forming an electrostatic latent image on a photo conductor of each of the developers. The optical scanners have the same focusing distance from the light source to the photo conductor. The light reflecting unit of one of the optical scanners is arranged at a position different from the light reflecting unit of another optical scanner, such that intervals between the developers vary. The plurality of developers include a yellow (Y) developer, a magenta (M) developer, a cyan (C) developer, and a black (K) developer. The optical scanners include a first optical scanner, which forms electrostatic latent images on two of the developers including the black (K) developer, and a second optical scanner, which forms electrostatic latent images on the other two developers.Type: GrantFiled: November 6, 2012Date of Patent: October 7, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jin-kwon Chun, Ho-hyun Hwang
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Patent number: 8848014Abstract: A polygon mirror assembly, a light scanning unit employing the polygon mirror assembly, and an image forming apparatus. The polygon mirror assembly includes a polygon mirror formed of a plastic material and having a plurality of reflection surfaces; and a motor unit to support and rotate the polygon mirror, where the polygon mirror is coupled to the motor unit by using an adhesive material.Type: GrantFiled: October 3, 2011Date of Patent: September 30, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Heon-hee Lim, Jae-hwan Yoo, Jin-kwon Chun, Jong-wuk Ku
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Publication number: 20140198171Abstract: A light scanning unit includes a light source to emit a light beam; a polygonal mirror to deflect the light beam in a main scanning direction; and an imaging optical system to image the light beam onto a scanning surface. The polygonal mirror includes a plurality of reflection surfaces that are formed in an outer portion of the polygonal mirror and rotate around a rotational axis and an internal mirror surface that defines a hole. A ratio of an internal diameter d to an outer diameter D satisfies 0.1?d/D?0.3. The polygonal mirror is adhered to a motor unit that supports and rotates the polygonal mirror, using an adhesive. The internal mirror surface of the polygonal mirror defining the hole is point-bonded to the motor unit using the adhesive, and the point-bonding is conducted in a direction toward a corner of the reflection surfaces.Type: ApplicationFiled: March 14, 2014Publication date: July 17, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin-kwon CHUN, Jae-hwan YOO, Won-young CHO, Heon-hee LIM, Ho-hyun HWANG
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Patent number: 8711196Abstract: A polygonal mirror, a light scanning unit using the polygonal mirror, and an image forming apparatus. The polygonal mirror is formed of a plastic and includes a plurality of reflection surfaces that are formed in an outer portion of the polygonal mirror and rotate around a rotational axis, and an internal mirror surface that defines a hole, wherein a ratio of an internal diameter d to an outer diameter D satisfies 0.1?d/D?0.3.Type: GrantFiled: November 4, 2011Date of Patent: April 29, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jin-kwon Chun, Jae-hwan Yoo, Won-young Cho, Heon-hee Lim, Ho-hyun Hwang
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Patent number: 8330784Abstract: An image forming apparatus including a black developer with increased capacity. The image forming apparatus includes optical scanners, where the optical scanners have the same focusing distance from the light source to the photo conductor, and the light reflecting unit of one of the optical scanners is arranged at a position different from the light reflecting unit of another optical scanner, such that intervals between the developers vary. Accordingly, although developers of the same type are used, the capacity of the black developer, which is most frequently used, may be easily increased by arranging the relative positions of the developers.Type: GrantFiled: December 28, 2009Date of Patent: December 11, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Jin-kwon Chun, Ho-hyun Hwang
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Publication number: 20120141167Abstract: A polygonal mirror, a light scanning unit using the polygonal mirror, and an image forming apparatus. The polygonal mirror is formed of a plastic and includes a plurality of reflection surfaces that are formed in an outer portion of the polygonal mirror and rotate around a rotational axis, and an internal mirror surface that defines a hole, wherein a ratio of an internal diameter d to an outer diameter D satisfies 0.1?d/D?0.3.Type: ApplicationFiled: November 4, 2011Publication date: June 7, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin-kwon Chun, Jae-hwan Yoo, Won-young Cho, Heon-hee Lim, Ho-hyun Hwang
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Publication number: 20120127252Abstract: A polygon mirror assembly, a light scanning unit employing the polygon mirror assembly, and an image forming apparatus. The polygon mirror assembly includes a polygon mirror formed of a plastic material and having a plurality of reflection surfaces; and a motor unit to support and rotate the polygon mirror, where the polygon mirror is coupled to the motor unit by using an adhesive material.Type: ApplicationFiled: October 3, 2011Publication date: May 24, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Heon-hee Lim, Jae-hwan Yoo, Jin-kwon Chun, Jong-wuk Ku
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Publication number: 20110050833Abstract: An image forming apparatus including a black developer with increased capacity. The image forming apparatus includes optical scanners, where the optical scanners have the same focusing distance from the light source to the photo conductor, and the light reflecting unit of one of the optical scanners is arranged at a position different from the light reflecting unit of another optical scanner, such that intervals between the developers vary. Accordingly, although developers of the same type are used, the capacity of the black developer, which is most frequently used, may be easily increased by arranging the relative positions of the developers.Type: ApplicationFiled: December 28, 2009Publication date: March 3, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin-kwon Chun, Ho-hyun Hwang
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Patent number: 7805094Abstract: An image forming apparatus and a charge removal device thereof capable of evenly irradiating light to a photosensitive body are disclosed. The charge removal device includes a charge removal lamp, which may be mounted outside the length of the photosensitive body, and the optical axis of which forms an angle with respect to the surface of the photosensitive body, and a lens provided between the photosensitive body and the charge removal lamp. The lens can collimate or make less divergent the light beam emitted by the charge removal lamp, and directs the collimated or less divergent light beam onto the surface of the photosensitive body. The light beam from the lens may be incident upon an area of the surface extending across the length of the photosensitive body.Type: GrantFiled: June 20, 2008Date of Patent: September 28, 2010Assignee: Samsung Electronics Co., Ltd.Inventor: Jin Kwon Chun
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Publication number: 20090074458Abstract: An image forming apparatus and a charge removal device thereof capable of evenly irradiating light to a photosensitive body are disclosed. The charge removal device includes a charge removal lamp, which may be mounted outside the length of the photosensitive body, and the optical axis of which forms an angle with respect to the surface of the photosensitive body, and a lens provided between the photosensitive body and the charge removal lamp. The lens can collimate or make less divergent the light beam emitted by the charge removal lamp, and directs the collimated or less divergent light beam onto the surface of the photosensitive body. The light beam from the lens may be incident upon an area of the surface extending across the length of the photosensitive body.Type: ApplicationFiled: June 20, 2008Publication date: March 19, 2009Applicant: SAMSUNG ELECTRONICS CO., LTDInventor: JIN KWON CHUN
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Publication number: 20090027735Abstract: A shutter structure for a light scanning unit, which is used in the light scanning unit that scans a photosensitive medium of a developing unit with a beam deflected by a beam deflector accommodated in a housing having an emission window, and selectively blocks the beam directed at the emission window, and an image forming apparatus using the same. The shutter structure includes a shutter that is rotatably provided outside the housing and selectively blocks the beam directed at the emission window, a joining unit that is formed at corresponding positions of the shutter and the housing so that the shutter is rotatably joined with the housing, and a push member that pushes the shutter so that the shutter is rotated in a direction in which the emission window is opened.Type: ApplicationFiled: July 19, 2007Publication date: January 29, 2009Applicant: Samsung Electronics Co., Ltd.Inventor: Jin-kwon CHUN