Patents by Inventor Soon-Cheol Jeong

Soon-Cheol Jeong 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).

  • Patent number: 9026026
    Abstract: A cleaning blade to remove a residual toner present on a surface of an electrophotographic photoreceptor, a cleaning unit, an electrophotographic imaging apparatus, and an electrophotographic cartridge including the cleaning blade.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: May 5, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Soon-cheol Jeong, Cha-young Bae
  • Publication number: 20140153987
    Abstract: A cleaning blade to remove a residual toner present on a surface of an electrophotographic photoreceptor, the cleaning blade having an excellent cleaning performance in a low temperature environment having a temperature range of about ?5° C. to about 20° C., and having an excellent abrasion resistance and an excellent durability in a high temperature environment having a temperature range of about 20° C. and up. A cleaning unit, an electrophotographic imaging apparatus, and an electrophotographic cartridge may include the cleaning blade.
    Type: Application
    Filed: July 17, 2013
    Publication date: June 5, 2014
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Soon-cheol JEONG, Cha-young BAE
  • Patent number: 8546054
    Abstract: An electrophotographic toner includes a binder resin, a colorant, and a releasing agent, wherein the electrophotographic toner has a complex viscosity (?) of 4e2 Pa·s to 8e3 Pa·s at a temperature range of 120 to 160° C. and an angular velocity range of 1.6 to 10 rad/s, a rate of change of the complex viscosity of 165 to 185 Pa·s/° C. at 1.6 rad/s, and 70 to 80 Pa·s/° C. at 10 rad/s within the temperature range, a stress relaxation of 1.0 e3 to 4.5 e4 Pa at a relaxation time of 0.05 to 0.3 seconds under a temperature range of 120 to 160° C., and a rate of change of the stress relaxation (?G/?T) of 785 to 1000 Pa/° C. at 0.05 seconds and 190 to 215 Pa/° C. at 0.3 seconds within the temperature range above.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: October 1, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyeuk Jeong, Duck-hee Lee, Deuck-woo Jang, Jung-ik Choi, Soon-cheol Jeong, Hae-ree Joo
  • Patent number: 8492061
    Abstract: The disclosure provides electrophotographic toner and a method of preparing the same. The toner includes a latex, a colorant, and a releasing agent, wherein the toner has a weight-average molecular weight of about 50,000 to about 80,000; a complex viscosity of about 1×103 to about 5×104 (Pa·s) at a temperature ranging from about 100° C. to about 140° C.; and a storage modulus Pa (dG?) to a loss modulus Pa (dG?) (dG?/dG?) ratio of about 1.10 to about 1.25.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: July 23, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Hyeuk Jeong, Kyeong Pang, Jung-Ik Choi, Soon-Cheol Jeong, Hong-Chul Shin
  • Patent number: 8318397
    Abstract: An electrophotographic toner and a method of preparing the same are provided. The electrophotographic toner includes a latex, a colorant, and a releasing agent, wherein the electrophotographic toner includes silicon (Si) and iron (Fe), each of the Si and Fe is in the range of about 3 to about 1,000 ppm, a mole ratio of Si to Fe (Si/Fe) is in the range of about 0.1 to about 5, an initiation temperature of a maximum heat absorption peak curve when a temperature increases in a heat absorption curve of the toner measured by a differential scanning calorimeter (DSC) is in the range of about 68 to about 89° C., and a peak temperature of the maximum heat absorption peak curve is in the range of about 86 to about 89° C.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: November 27, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-Young Cheong, Jun-Young Lee, Kyeong Pang, Soon-Cheol Jeong
  • Publication number: 20100167194
    Abstract: The disclosure provides electrophotographic toner and a method of preparing the same. The toner includes a latex, a colorant, and a releasing agent, wherein the toner has a weight-average molecular weight of about 50,000 to about 80,000; a complex viscosity of about 1×103 to about 5×104 (Pa·s) at a temperature ranging from about 100° C. to about 140° C.; and a storage modulus Pa (dG?) to a loss modulus Pa (dG?) (dG?/dG?) ratio of about 1.10 to about 1.25.
    Type: Application
    Filed: November 4, 2009
    Publication date: July 1, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-Hyeuk JEONG, Kyeong Pang, Jung-Ik Choi, Soon-Cheol Jeong, Hong-Chul Shin
  • Publication number: 20100067956
    Abstract: An electrophotographic toner and a method of preparing the same are provided. The electrophotographic toner includes a latex, a colorant, and a releasing agent, wherein the electrophotographic toner includes silicon (Si) and iron (Fe), each of the Si and Fe is in the range of about 3 to about 1,000 ppm, a mole ratio of Si to Fe (Si/Fe) is in the range of about 0.1 to about 5, an initiation temperature of a maximum heat absorption peak curve when a temperature increases in a heat absorption curve of the toner measured by a differential scanning calorimeter (DSC) is in the range of about 68 to about 89° C., and a peak temperature of the maximum heat absorption peak curve is in the range of about 86 to about 89° C.
    Type: Application
    Filed: September 17, 2009
    Publication date: March 18, 2010
    Inventors: Min-Yeong CHEONG, Jun-Young Lee, Kyeong Pang, Soon-Cheol Jeong
  • Publication number: 20090214965
    Abstract: An electrophotographic toner includes a binder resin, a colorant, and a releasing agent, wherein the electrophotographic toner has a complex viscosity (?) of 4e2 Pa·s to 8e3 Pa·s at a temperature range of 120 to 160° C. and an angular velocity range of 1.6 to 10 rad/s, a rate of change of the complex viscosity of 165 to 185 Pa·s/° C. at 1.6 rad/s, and 70 to 80 Pa·s/° C. at 10 rad/s within the temperature range, a stress relaxation of 1.0 e3 to 4.5 e4 Pa at a relaxation time of 0.05 to 0.3 seconds under a temperature range of 120 to 160° C., and a rate of change of the stress relaxation (?G/?T) of 785 to 1000 Pa/° C. at 0.05 seconds and 190 to 215 Pa/° C. at 0.3 seconds within the temperature range above.
    Type: Application
    Filed: September 29, 2008
    Publication date: August 27, 2009
    Inventors: Jae-hyeuk Jeong, Duck-hee Lee, Deuck-woo Jang, Jung-ik Choi, Soon-cheol Jeong, Hae-ree Joo