Patents by Inventor Takeru Chiba

Takeru Chiba 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: 20160048089
    Abstract: The present invention is to provide a toner which is able to inhibit the occurrence of fog, which is excellent in intermittent endurance, and which is excellent in followability during toner transfer and is thus excellent in top edge part uniformity in solid pattern printing. Disclosed is a toner for developing electrostatic images, comprising colored resin particles containing a binder resin, a colorant and a release agent, and an external additive, wherein static and kinetic friction coefficients obtained by measuring, using a 3-mm-diameter stainless-steel ball as a contactor, a 55-mm-diameter disk-shaped pellet obtained by pressing 4 g of the toner at 9 MPa for one minute, are 0.220 to 0.320 and 0.190 to 0.270, respectively, and a difference calculated by subtracting the kinetic friction coefficient from the static friction coefficient is 0.010 to 0.090.
    Type: Application
    Filed: March 5, 2014
    Publication date: February 18, 2016
    Applicant: ZEON CORPORATION
    Inventors: Hiroshi Nakatani, Takeru Chiba
  • Patent number: 9235153
    Abstract: An electrostatic image developer having little change in charge amount, no generation of fog and excellent environmental stability under all of low temperature and low humidity environment, normal temperature and normal humidity environment, and high temperature and high humidity environment is provided. Disclosed is an electrostatic image developer comprising a colored resin particle containing a binder resin and a colorant, and an external additive, wherein the external additive contains an alumina fine particle in plate-like shape subjected to a hydrophobicity-imparting treatment having a number average primary particle diameter of 20 to 120 nm and an aspect ratio of 3 to 15, and a content of the alumina fine particle is in the range from 0.05 to 1 part by mass with respect to 100 parts by mass of the colored resin particle.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: January 12, 2016
    Assignees: ZEON CORPORATION, KANTO DENKA KOGYO CO., LTD.
    Inventors: Hiromichi Jin, Takeru Chiba, Hidehiko Iinuma, Kenichi Yamazaki
  • Publication number: 20160006810
    Abstract: A virtual storage apparatus based on a plurality of storage apparatuses including a first storage apparatus and a second storage apparatus is provided to a host computer. A first logical unit of the first storage apparatus and a second logical unit of the second storage apparatus are provided to the host computer in a form of a virtual logical unit. The first storage apparatus is configured to return a response to an inquiry about port statuses from the host computer designating the virtual logical unit, the response indicating that the status of the first port is a status as indicated by the first port management information and the second storage apparatus is unavailable to respond to the inquiry about port statuses. The second storage apparatus is configured to return no response to the inquiry.
    Type: Application
    Filed: August 20, 2013
    Publication date: January 7, 2016
    Inventors: Takeru CHIBA, Hideo SAITO, Tomohiro KAWAGUCHI
  • Publication number: 20160004177
    Abstract: Disclosed is an electrostatic image developer containing colored resin particles containing a binder resin and a colorant, and an external additive, wherein, as the external additive, the electrostatic image developer contains plate-shaped zinc oxide fine particles having an average longer length of 50 to 2,000 nm and a value S of 0.0001 to 0.03 nm?1, which is a value obtained by dividing an average thickness d of the particles by an average base area A of the particles, and a content of the plate-shaped zinc oxide fine particles is in the range from 0.05 to 1 part by mass, with respect to 100 parts by mass of the colored resin particles.
    Type: Application
    Filed: February 21, 2014
    Publication date: January 7, 2016
    Applicant: ZEON CORPORATION
    Inventors: Takeru Chiba, Hiroshi Nakatani
  • Publication number: 20140304482
    Abstract: A storage system is described and includes a storage apparatus for storing data used by an external apparatus, first and second temporary data storage units, a host interface, a disk interface, and first and second controllers. The first controller is configured to select as a data transfer process, when the host interface receives a command from the external apparatus, one of a first data transfer process and a second data transfer process based on the command. The first data transfer process is a data transfer from the first temporary data storage unit to the external apparatus by the host interface. The second data transfer process is a data transfer from the first temporary data storage unit to the second temporary data storage unit by the second controller, and a data transfer from the second temporary data storage unit to the external apparatus by the host interface.
    Type: Application
    Filed: June 18, 2014
    Publication date: October 9, 2014
    Applicant: Hitachi, Ltd.
    Inventors: TAKERU CHIBA, Sadahiro Sugimoto
  • Patent number: 8846285
    Abstract: An object of the present invention is to provide a toner for developing electrostatic images, which prevents a decrease in toner charge amount in the environment of high temperature and high humidity, prevents occurrence of fog and has excellent flowability. Provided is a toner for developing electrostatic images, comprising an external additive and colored resin particles comprising a binder resin and a colorant, wherein the external additive is core-shell type complex fine particles in which resin fine particles are covered with at least one inorganic component selected from the group consisting of silica, alumina, titania and zirconia, and the volume ratio of the inorganic component of the core-shell type complex fine particles is 45 to 75% by volume when the total volume of the core-shell type complex fine particles is 100% by volume.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: September 30, 2014
    Assignee: Zeon Corporation
    Inventors: Takeru Chiba, Hisashi Kurokawa
  • Patent number: 8782337
    Abstract: A storage system is described and includes a storage apparatus for storing data used by an external apparatus, first and second temporary data storage units, a host interface, a disk interface, and first and second controllers. The first controller is configured to select as a data transfer process, when the host interface receives a command from the external apparatus, one of a first data transfer process and a second data transfer process based on the command. The first data transfer process is a data transfer from the first temporary data storage unit to the external apparatus by the host interface. The second data transfer process is a data transfer from the first temporary data storage unit to the second temporary data storage unit by the second controller, and a data transfer from the second temporary data storage unit to the external apparatus by the host interface.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: July 15, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Takeru Chiba, Sadahiro Sugimoto
  • Publication number: 20140162180
    Abstract: An electrostatic image developer having little change in charge amount, no generation of fog and excellent environmental stability under all of low temperature and low humidity environment, normal temperature and normal humidity environment, and high temperature and high humidity environment is provided. Disclosed is an electrostatic image developer comprising a colored resin particle containing a binder resin and a colorant, and an external additive, wherein the external additive contains an alumina fine particle in plate-like shape subjected to a hydrophobicity-imparting treatment having a number average primary particle diameter of 20 to 120 nm and an aspect ratio of 3 to 15, and a content of the alumina fine particle is in the range from 0.05 to 1 part by mass with respect to 100 parts by mass of the colored resin particle.
    Type: Application
    Filed: May 18, 2012
    Publication date: June 12, 2014
    Applicants: KANTO DENKA KOGYO CO., LTD., ZEON CORPORATION
    Inventors: Hiromichi Jin, Takeru Chiba, Hidehiko Iinuma, Kenichi Yamazaki
  • Publication number: 20130318296
    Abstract: One embodiment provides a storage system and a data transfer method of a storage system, and particularly a storage system and a data transfer method of a storage system that can achieve higher data I/O performance even when hardware resources are limited.
    Type: Application
    Filed: October 17, 2012
    Publication date: November 28, 2013
    Applicant: Hitachi, Ltd.
    Inventors: TAKERU CHIBA, Sadahiro Sugimoto
  • Publication number: 20130101934
    Abstract: An object of the present invention is to provide a toner for developing electrostatic images, which prevents a decrease in toner charge amount in the environment of high temperature and high humidity, prevents occurrence of fog and has excellent flowability. Provided is a toner for developing electrostatic images, comprising an external additive and colored resin particles comprising a binder resin and a colorant, wherein the external additive is core-shell type complex fine particles in which resin fine particles are covered with at least one inorganic component selected from the group consisting of silica, alumina, titania and zirconia, and the volume ratio of the inorganic component of the core-shell type complex fine particles is 45 to 75% by volume when the total volume of the core-shell type complex fine particles is 100% by volume.
    Type: Application
    Filed: June 24, 2011
    Publication date: April 25, 2013
    Applicant: ZEON CORPORATION
    Inventors: Takeru Chiba, Hisashi Kurokawa
  • Patent number: 8316195
    Abstract: One embodiment provides a storage system and a data transfer method of a storage system, and particularly a storage system and a data transfer method of a storage system that can achieve higher data I/O performance even when hardware resources are limited.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: November 20, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Takeru Chiba, Sadahiro Sugimoto
  • Publication number: 20120066458
    Abstract: A storage system comprises a storage apparatus that stores therein data used by an external apparatus, first and second temporary data storage units that temporarily store therein data to be written to the storage apparatus from the external apparatus or data read from the storage apparatus, a first data transfer controller communicatively coupled with the external apparatus, and the first and second temporary data storage units, and controls data transfer between the external apparatus, and the first and second temporary data storage units, a second data transfer controller communicatively coupled with the first and second temporary data storage units, and the storage apparatus, and controls data transfer between the first and second temporary data storage units, and the storage apparatus, a third data transfer controller communicatively coupled with the first and second temporary data storage units, that controls data transfer between the first and second temporary storage units, and performs a data process
    Type: Application
    Filed: September 10, 2010
    Publication date: March 15, 2012
    Inventors: Takeru Chiba, Sadahiro Sugimoto