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).

  • Publication number: 20220137552
    Abstract: 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: Application
    Filed: January 13, 2020
    Publication date: May 5, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Jaewon Choi, Jeong Yong Ju, Yunsung Lee
  • Publication number: 20190011878
    Abstract: 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: Application
    Filed: September 19, 2017
    Publication date: January 10, 2019
    Applicant: S-Printing Solution Co., Ltd.
    Inventor: Jeong-yong JU
  • Patent number: 10175648
    Abstract: 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: Grant
    Filed: September 19, 2017
    Date of Patent: January 8, 2019
    Assignee: HP PRINTING KOREA CO., LTD.
    Inventor: Jeong-yong Ju
  • Patent number: 9897951
    Abstract: 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: Grant
    Filed: December 7, 2015
    Date of Patent: February 20, 2018
    Assignee: S-PRINTING SOLUTION CO., LTD.
    Inventor: Jeong Yong Ju
  • Publication number: 20160357133
    Abstract: 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: Application
    Filed: December 7, 2015
    Publication date: December 8, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jeong Yong JU
  • Patent number: 9436146
    Abstract: 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: Grant
    Filed: March 26, 2014
    Date of Patent: September 6, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Yong Ju, Byeong Hwa Anh, Jun Ho Lee
  • Patent number: 9417599
    Abstract: 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: Grant
    Filed: September 29, 2015
    Date of Patent: August 16, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Yong Ju, Jun Ho Lee
  • Patent number: 9405265
    Abstract: 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: Grant
    Filed: September 2, 2014
    Date of Patent: August 2, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-yong Ju, Young-hoon Kim
  • Patent number: 9280128
    Abstract: 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: Grant
    Filed: November 4, 2014
    Date of Patent: March 8, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Yong Ju, Byeong Hwa Ahn, Jun Ho Lee
  • Patent number: 9280097
    Abstract: 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: Grant
    Filed: December 29, 2014
    Date of Patent: March 8, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Yong Ju, Jun Ho Lee, Byeong Hwa Ahn
  • Publication number: 20160018781
    Abstract: 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: Application
    Filed: September 29, 2015
    Publication date: January 21, 2016
    Applicant: SAMSUNG ELECTORNICS CO., LTD.
    Inventors: Jeong Yong JU, Jun Ho LEE
  • Patent number: 9201354
    Abstract: 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: Grant
    Filed: October 23, 2013
    Date of Patent: December 1, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jeong Yong Ju
  • Patent number: 9182736
    Abstract: 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: Grant
    Filed: September 18, 2013
    Date of Patent: November 10, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Yong Ju, Jun Ho Lee
  • Publication number: 20150293491
    Abstract: 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: Application
    Filed: September 2, 2014
    Publication date: October 15, 2015
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jeong-yong JU, Young-hoon KIM
  • Publication number: 20150117916
    Abstract: 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: Application
    Filed: December 29, 2014
    Publication date: April 30, 2015
    Inventors: Jeong Yong JU, Jun Ho LEE, Byeong Hwa AHN
  • Publication number: 20150055982
    Abstract: 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: Application
    Filed: November 4, 2014
    Publication date: February 26, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Yong JU, Byeong Hwa AHN, Jun Ho LEE
  • Patent number: 8948654
    Abstract: 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: Grant
    Filed: November 20, 2012
    Date of Patent: February 3, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong Yong Ju, Jun Ho Lee, Byeong Hwa Ahn
  • Patent number: 8903299
    Abstract: 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: Grant
    Filed: August 17, 2009
    Date of Patent: December 2, 2014
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Jun Ho Lee, Myoung Sub Jang, Jeong Yong Ju, Byeong Hwa Ahn
  • Patent number: 8903274
    Abstract: 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: Grant
    Filed: October 26, 2012
    Date of Patent: December 2, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong Yong Ju, Byeong Hwa Ahn, Jun Ho Lee
  • Publication number: 20140294453
    Abstract: 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: Application
    Filed: March 26, 2014
    Publication date: October 2, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Yong JU, Byeong Hwa ANH, Jun Ho LEE