Patents by Inventor Jeong-yong Ju
Jeong-yong Ju 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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Publication number: 20220137552Abstract: An example image forming apparatus includes an image forming unit to form a toner image on a print medium, a fusing unit to fix the toner image to the print medium, a duct comprising an air inlet located adjacent to an exit of the fusing unit and an air discharge outlet located toward a discharge outlet through which the print medium is discharged, and a blower provided in the duct to discharge air to the air discharge outlet.Type: ApplicationFiled: January 13, 2020Publication date: May 5, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Jaewon Choi, Jeong Yong Ju, Yunsung Lee
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Publication number: 20190011878Abstract: An image forming apparatus includes a main body, a fan configured to discharge air inside the main body out of the main body, and a paper sensor arranged between a conveyance path of a paper that has passed through a fusing unit and the fan to sense the paper passing through the fusing unit, wherein a light sensing area of the paper sensing unit is open toward the fan.Type: ApplicationFiled: September 19, 2017Publication date: January 10, 2019Applicant: S-Printing Solution Co., Ltd.Inventor: Jeong-yong JU
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Patent number: 10175648Abstract: An image forming apparatus includes a main body, a fan configured to discharge air inside the main body out of the main body, and a paper sensor arranged between a conveyance path of a paper that has passed through a fusing unit and the fan to sense the paper passing through the fusing unit, wherein a light sensing area of the paper sensing unit is open toward the fan.Type: GrantFiled: September 19, 2017Date of Patent: January 8, 2019Assignee: HP PRINTING KOREA CO., LTD.Inventor: Jeong-yong Ju
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Patent number: 9897951Abstract: An image forming apparatus and a control method are provided. The image forming apparatus includes fusing rollers that fuse a developer at a printing medium, and a transporting guide that guides the printing medium being transported toward the fusing rollers. The transporting guide is movably installed to move between a first position to guide the printing medium, and a second position spaced apart from the first position. Thus, a friction between the transporting guide and the printing medium as well as the subsequent generation of static electricity may be reduced.Type: GrantFiled: December 7, 2015Date of Patent: February 20, 2018Assignee: S-PRINTING SOLUTION CO., LTD.Inventor: Jeong Yong Ju
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Publication number: 20160357133Abstract: An image forming apparatus and a control method are provided. The image forming apparatus includes fusing rollers that fuse a developer at a printing medium, and a transporting guide that guides the printing medium being transported toward the fusing rollers. The transporting guide is movably installed to move between a first position to guide the printing medium, and a second position spaced apart from the first position. Thus, a friction between the transporting guide and the printing medium as well as the subsequent generation of static electricity may be reduced.Type: ApplicationFiled: December 7, 2015Publication date: December 8, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Jeong Yong JU
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Patent number: 9436146Abstract: An image forming apparatus is provided. The image forming apparatus, in a case in which a toner on a transfer belt is checked through a sensing unit, is capable of preventing a rotation of a guide roller, which is configured to guide the transfer belt, by use of a regulation device, so that a check error occurring due to vibration of the guide roller is reduced. Thus, the toner on the transfer belt is checked with increased accuracy and precision.Type: GrantFiled: March 26, 2014Date of Patent: September 6, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong Yong Ju, Byeong Hwa Anh, Jun Ho Lee
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Patent number: 9417599Abstract: An image forming apparatus including a body provided at one side thereof with an opening, a transfer device movably installed at the body so as to be detachable through the opening, and a locking lever rotatably installed at the transfer device, wherein the locking lever rotates between a first position at which one end of the locking lever protrudes from the transfer device and a second position at which the one end is accommodated within the transfer device, and the body includes a locking protrusion that is locked with other end of the locking lever in a state that the locking lever is at the first position, so that only in a state that a worker rotates the locking lever while gripping the transfer device, the transfer device is separated from the body, thereby separating the transfer device in a safe manner.Type: GrantFiled: September 29, 2015Date of Patent: August 16, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong Yong Ju, Jun Ho Lee
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Patent number: 9405265Abstract: An image forming apparatus including a printing unit for printing images on a recording medium and an option kit adaptor are provided. The image forming apparatus includes an installation member having an accommodation space, and an adaptor, on which two or more option kits are loaded, that is detachably attached to the accommodation space of the installation member.Type: GrantFiled: September 2, 2014Date of Patent: August 2, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong-yong Ju, Young-hoon Kim
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Patent number: 9280128Abstract: An image forming apparatus including a side cover rotatably installed to open and close an opening provided at a body thereof while rotating, a first transfer unit to which a visible image of photoconductors of developing units is transferred, and a second transfer unit movably installed at the side cover to transfer the visible image to a printing medium, wherein the second transfer unit is provided at both sides thereof with a plurality of guide protrusions to perform a position restriction, and the body is provided at both sidewalls of inside thereof with a plurality of guide members to support the plurality of guide protrusions such that the second transfer unit is supported against both sidewalls of the inside of the body through the guide protrusion and the guide member, thereby reducing a reaction force applied to the side cover.Type: GrantFiled: November 4, 2014Date of Patent: March 8, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong Yong Ju, Byeong Hwa Ahn, Jun Ho Lee
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Patent number: 9280097Abstract: A transfer device and an image forming apparatus having the same are provided. Shapes of cam profiles of first cam members and second cam members controlling movement of first slider members moving a first transfer roller corresponding to a black developer, and second slider members moving a second transfer roller corresponding to a color developer. Times are different as when movement of the first slider members is completed and when movement of the second slider members is completed in mode conversion among a ready mode, a mono mode and a color mode, and thus a driving load generated when the first and second cam members are rotated is reduced, non-uniformity of the rotating speeds of the first and second cam members is reduced, and problems generated due to non-uniform rotating speeds of the cam members are reduced.Type: GrantFiled: December 29, 2014Date of Patent: March 8, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong Yong Ju, Jun Ho Lee, Byeong Hwa Ahn
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Publication number: 20160018781Abstract: An image forming apparatus including a body provided at one side thereof with an opening, a transfer device movably installed at the body so as to be detachable through the opening, and a locking lever rotatably installed at the transfer device, wherein the locking lever rotates between a first position at which one end of the locking lever protrudes from the transfer device and a second position at which the one end is accommodated within the transfer device, and the body includes a locking protrusion that is locked with other end of the locking lever in a state that the locking lever is at the first position, so that only in a state that a worker rotates the locking lever while gripping the transfer device, the transfer device is separated from the body, thereby separating the transfer device in a safe manner.Type: ApplicationFiled: September 29, 2015Publication date: January 21, 2016Applicant: SAMSUNG ELECTORNICS CO., LTD.Inventors: Jeong Yong JU, Jun Ho LEE
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Patent number: 9201354Abstract: Disclosed herein are an image forming apparatus and a control method thereof. The image forming apparatus includes a plurality of photoconductors, a transfer belt, a plurality of transfer rollers arranged in parallel with the plurality of photoconductors, and a controller rotating the transfer belt under the condition that at least one of the plurality of transfer rollers presses the transfer belt toward at least one of the plurality of photoconductors, interrupting power transmitted to the transfer belt to cause at least another of the plurality of transfer rollers to press the transfer belt toward at least another of the plurality of photoconductors, standing by until rotation of the transfer belt is stopped, after interruption of the power, and controlling the at least another of the plurality of transfer rollers so as to press the transfer belt toward the at least another of the plurality of photoconductors.Type: GrantFiled: October 23, 2013Date of Patent: December 1, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventor: Jeong Yong Ju
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Patent number: 9182736Abstract: An image forming apparatus including a body provided at one side thereof with an opening, a transfer device movably installed at the body so as to be detachable through the opening, and a locking lever rotatably installed at the transfer device, wherein the locking lever rotates between a first position at which one end of the locking lever protrudes from the transfer device and a second position at which the one end is accommodated within the transfer device, and the body includes a locking protrusion that is locked with other end of the locking lever in a state that the locking lever is at the first position, so that only in a state that a worker rotates the locking lever while gripping the transfer device, the transfer device is separated from the body, thereby separating the transfer device in a safe manner.Type: GrantFiled: September 18, 2013Date of Patent: November 10, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong Yong Ju, Jun Ho Lee
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Publication number: 20150293491Abstract: An image forming apparatus including a printing unit for printing images on a recording medium and an option kit adapter are provided. The image forming apparatus includes an installation member having an accommodation space, and an adaptor, on which two or more option kits are loaded, that is detachably attached to the accommodation space of the installation member.Type: ApplicationFiled: September 2, 2014Publication date: October 15, 2015Applicant: Samsung Electronics Co., Ltd.Inventors: Jeong-yong JU, Young-hoon KIM
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Publication number: 20150117916Abstract: A transfer device and an image forming apparatus having the same are provided. Shapes of cam profiles of first cam members and second cam members controlling movement of first slider members moving a first transfer roller corresponding to a black developer, and second slider members moving a second transfer roller corresponding to a color developer. Times are different as when movement of the first slider members is completed and when movement of the second slider members is completed in mode conversion among a ready mode, a mono mode and a color mode, and thus a driving load generated when the first and second cam members are rotated is reduced, non-uniformity of the rotating speeds of the first and second cam members is reduced, and problems generated due to non-uniform rotating speeds of the cam members are reduced.Type: ApplicationFiled: December 29, 2014Publication date: April 30, 2015Inventors: Jeong Yong JU, Jun Ho LEE, Byeong Hwa AHN
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Publication number: 20150055982Abstract: An image forming apparatus including a side cover rotatably installed to open and close an opening provided at a body thereof while rotating, a first transfer unit to which a visible image of photoconductors of developing units is transferred, and a second transfer unit movably installed at the side cover to transfer the visible image to a printing medium, wherein the second transfer unit is provided at both sides thereof with a plurality of guide protrusions to perform a position restriction, and the body is provided at both sidewalls of inside thereof with a plurality of guide members to support the plurality of guide protrusions such that the second transfer unit is supported against both sidewalls of the inside of the body through the guide protrusion and the guide member, thereby reducing a reaction force applied to the side cover.Type: ApplicationFiled: November 4, 2014Publication date: February 26, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong Yong JU, Byeong Hwa AHN, Jun Ho LEE
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Patent number: 8948654Abstract: A transfer device and an image forming apparatus having the same are provided. Shapes of cam profiles of first cam members and second cam members controlling movement of first slider members moving a first transfer roller corresponding to a black developer, and second slider members moving a second transfer roller corresponding to a color developer. Times are different as when movement of the first slider members is completed and when movement of the second slider members is completed in mode conversion among a ready mode, a mono mode and a color mode, and thus a driving load generated when the first and second cam members are rotated is reduced, non-uniformity of the rotating speeds of the first and second cam members is reduced, and problems generated due to non-uniform rotating speeds of the cam members are reduced.Type: GrantFiled: November 20, 2012Date of Patent: February 3, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Jeong Yong Ju, Jun Ho Lee, Byeong Hwa Ahn
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Patent number: 8903299Abstract: An image forming apparatus capable of reducing a space required to install a transfer unit to achieve a compact body size. The image forming apparatus can include a body, a frame installed in the body, a transfer unit installed inside the frame, and a waste toner recovery device to recover waste toner collected from the transfer unit. The waste toner recovery device can include a first delivery unit to deliver the waste toner in a first direction, and a second delivery unit to deliver the waste toner, delivered from the first delivery unit, in a second direction. The second delivery unit can be movably installed to the frame and can be coupled to or detached from the first delivery unit via movement thereof.Type: GrantFiled: August 17, 2009Date of Patent: December 2, 2014Assignee: Samsung Electronics Co. Ltd.Inventors: Jun Ho Lee, Myoung Sub Jang, Jeong Yong Ju, Byeong Hwa Ahn
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Patent number: 8903274Abstract: An image forming apparatus including a side cover rotatably installed to open and close an opening provided at a body thereof while rotating, a first transfer unit to which a visible image of photoconductors of developing units is transferred, and a second transfer unit movably installed at the side cover to transfer the visible image to a printing medium, wherein the second transfer unit is provided at both sides thereof with a plurality of guide protrusions to perform a position restriction, and the body is provided at both sidewalls of inside thereof with a plurality of guide members to support the plurality of guide protrusions such that the second transfer unit is supported against both sidewalls of the inside of the body through the guide protrusion and the guide member, thereby reducing a reaction force applied to the side cover.Type: GrantFiled: October 26, 2012Date of Patent: December 2, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jeong Yong Ju, Byeong Hwa Ahn, Jun Ho Lee
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Publication number: 20140294453Abstract: An image forming apparatus is provided. The image forming apparatus, in a case in which a toner on a transfer belt is checked through a sensing unit, is capable of preventing a rotation of a guide roller, which is configured to guide the transfer belt, by use of a regulation device, so that a check error occurring due to vibration of the guide roller is reduced. Thus, the toner on the transfer belt is checked with increased accuracy and precision.Type: ApplicationFiled: March 26, 2014Publication date: October 2, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong Yong JU, Byeong Hwa ANH, Jun Ho LEE