Patents by Inventor Sho Kim
Sho Kim 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: 10180635Abstract: A liquid developer is characterized in that it includes toner particles and an insulating liquid, the toner particles include a resin and a pigment, the pigment includes a first pigment and a second pigment, the first pigment is carbon black, the second pigment is C.I. Pigment Brown 23 and/or C.I. Pigment Brown 25, and 20 to 60% by mass of the pigment is included relative to the toner particles.Type: GrantFiled: November 7, 2013Date of Patent: January 15, 2019Assignee: KONICA MINOLTA, INC.Inventors: Chiaki Yamada, Masahiro Anno, Sho Kim, Yukiko Uno
-
Patent number: 9152068Abstract: In a liquid developer in which toner particles are dispersed in an insulating liquid, the toner particles have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. The second resin particles further contain a pigment and a dispersant for pigment, and solubility of the dispersant for pigment in the insulating liquid is not higher than 10 mass % at 25° C.Type: GrantFiled: September 18, 2013Date of Patent: October 6, 2015Assignee: KONICA MINOLTA, INC.Inventors: Sho Kim, Satoshi Matsumoto, Naoki Yoshie, Kenji Hayashi
-
Patent number: 9146488Abstract: A liquid developer includes toner particles and an insulating liquid, the toner particles include a resin and a pigment, the resin includes a crystalline resin, the pigment includes a first pigment, a second pigment, and a third pigment, the first pigment is carbon black, the second pigment is C.I. Pigment Brown 23 and/or C.I. Pigment Brown 25, the third pigment is nigrosine, and 20 to 60% by mass of the pigment is included relative to the toner particles.Type: GrantFiled: November 7, 2013Date of Patent: September 29, 2015Assignee: KONICA MINOLTA, INC.Inventors: Chiaki Yamada, Masahiro Anno, Sho Kim, Yukiko Uno
-
Publication number: 20140234769Abstract: A liquid developer includes an insulating liquid and a plurality of toner particles. The plurality of toner particles has a median size not smaller than 1 ?m and not greater than 3 ?m as a whole. In the plurality of toner particles, average circularity is not smaller than 0.90 and not greater than 0.96, and a standard deviation of circularity is not smaller than 0.02 and not greater than 0.10.Type: ApplicationFiled: February 20, 2014Publication date: August 21, 2014Applicant: Konica Minolta, Inc.Inventors: Naoki YOSHIE, Masahiro ANNO, Keiko MOMOTANI, Miyuki HOTTA, Satoshi MATSUMOTO, Sho KIM, Yukiko UNO
-
Publication number: 20140234770Abstract: A liquid developer includes an insulating liquid and a plurality of toner particles. The plurality of toner particles has a volume-based median size not smaller than 0.5 ?m and not greater than 3 ?m as a whole, and a volume-based coefficient of variation not lower than 40% and not higher than 130%. The plurality of toner particles includes a first toner particle group of the toner particles having a particle size not greater than 1 ?m. The number of toner particles constituting the first toner particle group occupies not lower than 20% of the total number of toner particles. The toner particles in the first toner particle group have an average circularity not smaller than 0.945.Type: ApplicationFiled: February 20, 2014Publication date: August 21, 2014Applicant: Konica Minolta, Inc.Inventors: Miyuki HOTTA, Masahiro Anno, Naoki Yoshie, Keiko Momotani, Sho Kim, Yukiko Uno, Satoshi Matsumoto
-
Publication number: 20140134536Abstract: A liquid developer includes toner particles and an insulating liquid, the toner particles include a resin and a pigment, the resin includes a crystalline resin, the pigment includes a first pigment, a second pigment, and a third pigment, the first pigment is carbon black, the second pigment is C.I. Pigment Brown 23 and/or C.I. Pigment Brown 25, the third pigment is nigrosine, and 20 to 60% by mass of the pigment is included relative to the toner particles.Type: ApplicationFiled: November 7, 2013Publication date: May 15, 2014Applicant: Konica Minolta, Inc.Inventors: Chiaki YAMADA, Masahiro Anno, Sho Kim, Yukiko Uno
-
Publication number: 20140134537Abstract: A liquid developer is characterized in that it includes toner particles and an insulating liquid, the toner particles include a resin and a pigment, the pigment includes a first pigment and a second pigment, the first pigment is carbon black, the second pigment is C.I. Pigment Brown 23 and/or C.I. Pigment Brown 25, and 20 to 60% by mass of the pigment is included relative to the toner particles.Type: ApplicationFiled: November 7, 2013Publication date: May 15, 2014Applicant: Konica Minolta, Inc.Inventors: Chiaki YAMADA, Masahiro Anno, Sho Kim, Yukiko Uno
-
Publication number: 20140087302Abstract: In a liquid developer in which toner particles are dispersed in an insulating liquid, the toner particles have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. The second resin particles further contain a pigment and a dispersant for pigment, and solubility of the dispersant for pigment in the insulating liquid is not higher than 10 mass % at 25° C.Type: ApplicationFiled: September 18, 2013Publication date: March 27, 2014Applicant: Konica Minolta, Inc.Inventors: Sho KIM, Satoshi MATSUMOTO, Naoki YOSHIE, Kenji HAYASHI
-
Patent number: 8362198Abstract: There is provided a method for producing a resin particle capable of unprecedentedly realizing both excellent heat resistant keeping property and melting property. The present invention is a method for producing a resin particle (X) comprising the step of treating a resin particle (B) containing a resin (A) composed of a crystalline part (a) containing, as an essential constitutional component, a polyester (p1) not containing an aromatic ring or a polyester (p2) containing an aromatic ring, and produced by polycondensation of a polyol component and a polycarboxylic acid component, and a noncrystalline part (b), with liquid or supercritical carbon dioxide (C), and removing (C), wherein a heat of fusion measured by differential scanning calorimetry (DSC) of the obtained (X) satisfies the following relational formula (1): 0?H2/H1?0.Type: GrantFiled: February 18, 2011Date of Patent: January 29, 2013Assignee: Sanyo Chemical Industries, Ltd.Inventors: Yasuhiro Shindo, Sho Kim
-
Patent number: 8362197Abstract: There is provided a method for producing a resin particle capable of unprecedentedly realizing both excellent heat resistant keeping property and melting property. The present invention is a method for producing a resin particle (X) comprising the step of treating a resin particle (B) containing a resin (A) composed of a crystalline part (a) containing, as an essential constitutional component, a polyester (p1) not containing an aromatic ring or a polyester (p2) containing an aromatic ring, and produced by polycondensation of a polyol component and a polycarboxylic acid component, and a noncrystalline part (b), with liquid or supercritical carbon dioxide (C), and removing (C), wherein a heat of fusion measured by differential scanning calorimetry (DSC) of the obtained (X) satisfies the following relational formula (1): 0?H2/H1?0.Type: GrantFiled: May 20, 2009Date of Patent: January 29, 2013Assignee: Sanyo Chemical Industries, Ltd.Inventors: Yasuhiro Shindo, Sho Kim
-
Publication number: 20110144287Abstract: There is provided a method for producing a resin particle capable of unprecedentedly realizing both excellent heat resistant keeping property and melting property. The present invention is a method for producing a resin particle (X) comprising the step of treating a resin particle (B) containing a resin (A) composed of a crystalline part (a) containing, as an essential constitutional component, a polyester (p1) not containing an aromatic ring or a polyester (p2) containing an aromatic ring, and produced by polycondensation of a polyol component and a polycarboxylic acid component, and a noncrystalline part (b), with liquid or supercritical carbon dioxide (C), and removing (C), wherein a heat of fusion measured by differential scanning calorimetry (DSC) of the obtained (X) satisfies the following relational formula (1): 0?H2/H1?0.Type: ApplicationFiled: February 18, 2011Publication date: June 16, 2011Applicant: SANYO CHEMICAL INDUSTRIES, LTD.Inventors: Yasuhiro Shindo, Sho Kim
-
Publication number: 20110060110Abstract: There is provided a method for producing a resin particle capable of unprecedentedly realizing both excellent heat resistant keeping property and melting property. The present invention is a method for producing a resin particle (X) comprising the step of treating a resin particle (B) containing a resin (A) composed of a crystalline part (a) containing, as an essential constitutional component, a polyester (p1) not containing an aromatic ring or a polyester (p2) containing an aromatic ring, and produced by polycondensation of a polyol component and a polycarboxylic acid component, and a noncrystalline part (b), with liquid or supercritical carbon dioxide (C), and removing (C), wherein a heat of fusion measured by differential scanning calorimetry (DSC) of the obtained (X) satisfies the following relational formula (1): 0?H2/H1?0.Type: ApplicationFiled: May 20, 2009Publication date: March 10, 2011Applicant: SANYO CHEMICAL INDUSTRIES, LTD.Inventors: Yasuhiro Shindo, Sho Kim