Patents by Inventor Takashi Teshima
Takashi Teshima 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: 11101161Abstract: A substrate holding member includes a base, and a plurality of convex parts formed at an upper surface of the base and configured to hold a substrate at top surfaces thereof. Each convex part has a root portion extending from the upper surface of the base, and a top portion formed on the root portion and including the top surface. In each convex part, a cross-sectional area of the root portion is larger than a cross-sectional area of the top portion. At least a portion including the top surface of the top portion is formed of a holding member made of a material having a greater Young's modulus than a material forming the base. The respective holding members are spaced apart from each other.Type: GrantFiled: June 20, 2018Date of Patent: August 24, 2021Assignee: NGK SPARK PLUG CO., LTD.Inventors: Norio Onodera, Takashi Teshima
-
Patent number: 10468289Abstract: Provided is a substrate holding member that includes a base body and a plurality of protrusions formed on a surface of the base body and that is capable of suppressing generation of particles due to peeling-off or cracking of protective layers of the protrusions. A substrate holding member includes a base body and a plurality of protrusions formed on a surface of the base body. Each of the protrusions includes a base portion and a protective layer, the base portion having a flat upper end surface and being made from a silicon carbide sintered compact, the protective layer being made of silicon carbide. The protective layer includes a region on at least a part of the base portion from an edge of the upper end surface to a lower end of the base portion, the region being exposed along an entire periphery. Preferably, the protective layer is formed so as to cover at least only a part of an upper portion of the base portion, the upper portion including the upper end surface.Type: GrantFiled: December 16, 2016Date of Patent: November 5, 2019Assignee: NGK SPARK PLUG CO., LTD.Inventors: Tomohiro Ishino, Takashi Teshima
-
Publication number: 20180374739Abstract: A substrate holding member includes a base, and a plurality of convex parts formed at an upper surface of the base and configured to hold a substrate at top surfaces thereof. Each convex part has a root portion extending from the upper surface of the base, and a top portion formed on the root portion and including the top surface. In each convex part, a cross-sectional area of the root portion is larger than a cross-sectional area of the top portion. At least a portion including the top surface of the top portion is formed of a holding member made of a material having a greater Young's modulus than a material forming the base. The respective holding members are spaced apart from each other.Type: ApplicationFiled: June 20, 2018Publication date: December 27, 2018Inventors: Norio ONODERA, Takashi TESHIMA
-
Publication number: 20180130692Abstract: Provided is a substrate holding member that includes a base body and a plurality of protrusions formed on a surface of the base body and that is capable of suppressing generation of particles due to peeling-off or cracking of protective layers of the protrusions. A substrate holding member includes a base body and a plurality of protrusions formed on a surface of the base body. Each of the protrusions includes a base portion and a protective layer, the base portion having a flat upper end surface and being made from a silicon carbide sintered compact, the protective layer being made of silicon carbide. The protective layer includes a region on at least a part of the base portion from an edge of the upper end surface to a lower end of the base portion, the region being exposed along an entire periphery. Preferably, the protective layer is formed so as to cover at least only a part of an upper portion of the base portion, the upper portion including the upper end surface.Type: ApplicationFiled: December 16, 2016Publication date: May 10, 2018Inventors: Tomohiro ISHINO, Takashi TESHIMA
-
Patent number: 8741526Abstract: There is provided a developer that has excellent positive charging characteristics and charging stability, and which is compatible with high-speed developing. The developer of the invention contains toner particles and an insulating liquid, wherein a fatty acid ester is contained as the insulating liquid, a substance A expressed by the following formula (1) and/or a substance B expressed by the following formula (2) is further contained, and the total percentage in which substance A and substance B are contained is at least 0.1 wt % and no more than 3.0 wt %.Type: GrantFiled: April 26, 2012Date of Patent: June 3, 2014Assignee: Seiko Epson CorporationInventors: Takashi Teshima, Junichi Ishikawa
-
Patent number: 8592125Abstract: Provided is a liquid developer containing toner particles and an insulating liquid containing an epoxy modified fatty acid alkyl ester.Type: GrantFiled: February 18, 2010Date of Patent: November 26, 2013Assignee: Seiko Epson CorporationInventor: Takashi Teshima
-
Patent number: 8329372Abstract: An liquid developer includes insulating liquid and toner particles dispersed in the insulating liquid. An average particle diameter of the toner particles based on volume is in the range of 0.7 to 3 ?m, a width S of particle size distribution of the toner particles represented by the following formula (I) is 1.4 or less, and the insulating liquid include the unsaturated fatty acid glyceride: S=[D(90)?D(10)]/D(50)??(I), where D(X) represents the particle diameter at the point of X % in which X is the ratio of accumulated volume to the total volume when the volume is accumulated from the small particle diameter in the particle size distribution of the toner particles.Type: GrantFiled: June 26, 2007Date of Patent: December 11, 2012Assignee: Seiko Epson CorporationInventors: Takashi Teshima, Ken Ikuma
-
Publication number: 20120288792Abstract: There is provided a developer that has excellent positive charging characteristics and charging stability, and which is compatible with high-speed developing. The developer of the invention contains toner particles and an insulating liquid, wherein a fatty acid ester is contained as the insulating liquid, a substance A expressed by the following formula (1) and/or a substance B expressed by the following formula (2) is further contained, and the total percentage in which substance A and substance B are contained is at least 0.1 wt % and no more than 3.0 wt %.Type: ApplicationFiled: April 26, 2012Publication date: November 15, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Takashi TESHIMA, Junichi ISHIKAWA
-
Patent number: 8142974Abstract: A liquid developer is provided. The liquid developer comprises an insulation liquid, toner particles dispersed in the insulation liquid, a dispersant dissolved in the insulation liquid; and a charge control agent dissolved in the insulation liquid. The charge control agent is represented by the following chemical formula (I): wherein in the chemical formula (I) R1 represents an alkyl group or alkenyl group having a carbon number in the range of 8 to 22, and R2 represents a hydroxyalkyl group. The liquid developer has both superior dispersibility and a charge characteristic of toner particles. Further, an image forming apparatus is also provided.Type: GrantFiled: March 17, 2009Date of Patent: March 27, 2012Assignee: Seiko Epson CorporationInventors: Yoshihiro Ueno, Takashi Teshima, Masahiro Oki
-
Patent number: 8142973Abstract: A liquid developer includes an insulating liquid; toner particles constituted by a material containing a polyester resin; and an alkyl diamine and an amide compound having a hydroxy fatty acid skeleton as dispersants.Type: GrantFiled: March 9, 2009Date of Patent: March 27, 2012Assignee: Seiko Epson CorporationInventors: Tomotake Hiraga, Takashi Teshima
-
Patent number: 8097392Abstract: A liquid developer includes an insulation liquid containing a fatty acid monoester and toner particles comprised of a resin material. The resin material is characterized in that a weight-average molecular weight Mw of the resin material is in the range of 20,000 to 200,000, and an amount of a component of which molecular weight M is 10,000 or less contained in the resin material is in the range of 5 to 40 wt %. The liquid developer described above is harmless to the environment. Further, the liquid developer also has superior preservability or storage stability and superior fixing characteristics at a low temperature. An image forming apparatus that can suitably use such a liquid developer is also provided.Type: GrantFiled: July 3, 2008Date of Patent: January 17, 2012Assignee: Seiko Epson CorporationInventors: Takashi Teshima, Satoru Miura
-
Patent number: 8080356Abstract: A liquid developer is provided. The liquid developer comprises: an insulation liquid constituted of a modified epoxy compound as a main component thereof; toner particles dispersed in the insulation liquid; and a cation type photopolymerization initiator used for polymerizing the modified epoxy compound. The liquid developer has superior fixing characteristics and is capable of forming an image at a high speed. Further, a method of forming an image is also provided.Type: GrantFiled: March 16, 2009Date of Patent: December 20, 2011Assignee: Seiko Epson CorporationInventor: Takashi Teshima
-
Patent number: 8080355Abstract: A liquid developer includes an insulation liquid containing a fatty acid monoester, and toner particles comprised of a polyester resin. By using the liquid developer, it is possible to provide superior fixing characteristic of toner particles to a recording medium. An image forming apparatus that can suitably use such a liquid developer is also provided.Type: GrantFiled: February 15, 2008Date of Patent: December 20, 2011Assignee: Seiko Epson CorporationInventors: Takashi Teshima, Koji Akioka, Ken Ikuma
-
Patent number: 8076049Abstract: A liquid developer includes an insulation liquid containing a fatty acid monoester and toner particles comprised of a resin material, the resin material containing a first resin component and a second resin component of which weight-average molecular weight Mw2 is larger than a weight-average molecular weight Mw1 of the first resin component. The first resin component and the second resin component are characterized in that the weight-average molecular weight Mw1 of the first resin component is in the range of 3,000 to 12,000, the weight-average molecular weight Mw2 of the second resin component is in the range of 20,000 to 400,000, and when an amount of the first resin component contained in the resin material is defined as A (wt %) and an amount of the second resin component contained in the resin material is defined as B (wt %), A and B satisfy a relation: 1.0?A/B?9.0. The liquid developer described above is harmless to the environment.Type: GrantFiled: July 3, 2008Date of Patent: December 13, 2011Assignee: Seiko Epson CorporationInventors: Takashi Teshima, Satoru Miura
-
Patent number: 8021816Abstract: A liquid developer includes: an insulating liquid; toner particles constituted by a resin material as a main component; and a dispersing agent expressed by Formula (I): H2N—R—NH—R???(I) (where, R denotes an alkylene group having a carbon number of 2 to 6 and R? denotes an alkyl group having a carbon number of 8 to 24).Type: GrantFiled: October 31, 2008Date of Patent: September 20, 2011Assignee: Seiko Epson CorporationInventor: Takashi Teshima
-
Patent number: 7943282Abstract: A liquid developer includes: an insulating liquid having dispersed therein toner particles, the insulating liquid containing a fatty acid monoester that is an ester of a fatty acid and a monohydric alcohol, and the insulating liquid having an aniline point of from 5 to 80° C.Type: GrantFiled: November 7, 2007Date of Patent: May 17, 2011Assignee: Seiko Epson CorporationInventors: Koji Akioka, Takashi Teshima, Satoru Miura, Shunichiro Yamanaka, Ken Ikuma
-
Patent number: 7862976Abstract: A liquid developer having superior fixing characteristic of toner particles to a recording medium and which is harmless to the environment, and an image forming apparatus using the liquid developer are provided. The liquid developer is comprised of an insulation liquid and toner particles dispersed in the insulation liquid, wherein the insulation liquid contains a first vegetable oil and a reaction product produced by an ester exchange reaction of a second vegetable oil and a monovalent alcohol.Type: GrantFiled: July 12, 2007Date of Patent: January 4, 2011Assignee: Seiko Epson CorporationInventors: Satoru Miura, Koji Akioka, Hiroshi Kaiho, Takashi Teshima, Ken Ikuma
-
Patent number: 7858284Abstract: A liquid developer includes an insulation liquid, toner particles dispersed in the insulation liquid, which at least a part of the surface of each of the toner particles contains a rosin resin and a dispersant improving dispersibility of the toner particles in the insulation liquid, which the dispersant is consisted of a material having a predetermined amine value. The liquid developer described above has superior positive charge property of toner particles and which has superior dispersibility of the toner particles for a long period of time. Further, an image forming apparatus that can suitably use such a liquid developer is also provided.Type: GrantFiled: January 9, 2009Date of Patent: December 28, 2010Assignee: Seiko Epson CorporationInventors: Masahiro Oki, Takashi Teshima
-
Patent number: D700601Type: GrantFiled: August 27, 2012Date of Patent: March 4, 2014Assignee: Fujitsu LimitedInventors: Kohei Okamoto, Hiroyuki Fujita, Takashi Teshima
-
Patent number: D734323Type: GrantFiled: March 21, 2014Date of Patent: July 14, 2015Assignee: FUJITSU LIMITEDInventors: Tomohiro Takizawa, Takashi Teshima