Patents by Inventor Tomomi Suzuki

Tomomi Suzuki 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: 7824834
    Abstract: A toner including a binder resin; a colorant; a release agent; and a modified layered inorganic material in which at least part of interlayer ions is modified with an organic ion, wherein the toner has a volume average particle diameter (Dv) of 3 to 7 ?m and a ratio (Dv/Dn) of the volume average particle diameter (Dv) to a number average particle diameter (Dn) of the toner of 1.00 to 1.30, and wherein the release agent is included in the toner in an amount (A) of 1 to 10% by weight, and the ratio (B/A) of the amount (A) to the amount (B) of the release agent included in a classified toner in units of percent by weight is 0.7 to 1.3, wherein the classified toner satisfies the relationship (Dv?/Dn??1)/(Dv/Dn?1)?¾wherein Dv? and Dn? respectively represent the volume and number average particle diameters of the classified toner.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: November 2, 2010
    Assignee: Ricoh Company Limited
    Inventors: Junichi Awamura, Akinori Saitoh, Masahide Yamada, Toyoshi Sawada, Takuya Seshita, Tomomi Suzuki
  • Patent number: 7799498
    Abstract: The present invention provides an image forming apparatus capable of stably producing high quality images with time, without causing missing a central part of a thin line, however, with keeping an appropriate flowability of a toner. The toner used in the image forming apparatus is a toner which contains a binder resin, a colorant, and a laminar inorganic mineral in which at least part of an ion in layers is modified with an organic ion, the toner is granulated in an aqueous system, the volume average particle diameter Dv of the toner is in the range of 3.0 ?m<Dv<6.5 ?m, the aspect ratio of the toner is 0.81 to 0.89, and the surface of the toner is externally added with a plurality of types of fine particles.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: September 21, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Takuya Seshita, Junichi Awamura, Tomomi Suzuki, Toyoshi Sawada, Masahide Yamada
  • Publication number: 20100209838
    Abstract: A toner including a binder resin, a coloring agent, and a releasing agent, the toner formed by dispersing a toner liquid material which is prepared by dispersing the binder resin, the prepolymer, an elongation agent and/or a cross-linking agent for the prepolymer, the coloring agent, and the releasing agent in an organic solvent, dispersing the toner liquid material in an aqueous medium to obtain a liquid dispersion in at least one of cross linking reaction and elongation reaction, and removing the organic solvent from the liquid dispersion, and the toner satisfying the following relationship: 1.35< or =M(g)/M(p)< or =1.90, where M(g) represents the content of the gel composition formed in the at least one of cross linking reaction and elongation reaction and M(P) represents the content of the prepolymer in the toner liquid material when the total of M(P) and the content of the binder resin in the toner liquid material is set to be 100 g.
    Type: Application
    Filed: February 19, 2010
    Publication date: August 19, 2010
    Inventors: Teruki KUSAHARA, Junichi AWAMURA, Tomomi SUZUKI, Toshihiko KARATO
  • Patent number: 7779413
    Abstract: Necessary resources are assigned to programs based on a program reservation information management table in which each of the programs is associated with a necessary resource quantity for execution of the program and execution scheduled time period as program reservation information. When the program reservation information is entered through a terminal, a free resource quantity management table in which available resource quantities are associated with respective time periods is referred to, and it is determined whether the available resource quantity for the execution scheduled time period is at or above the necessary resource quantity.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: August 17, 2010
    Assignee: Hitachi, Ltd.
    Inventor: Tomomi Suzuki
  • Publication number: 20100119255
    Abstract: An image forming apparatus including an image bearer; a charging device charging the image bearer; a light irradiating device irradiating the charged image bearer with light to form an electrostatic image; a developing device developing the electrostatic image with a developer including a toner to form a toner image on the image bearer; a transfer device transferring the toner image; and a cleaning device cleaning the image bearer, wherein the volume average particle diameter of the toner is greater than 5.0 ?m and less than 5.5 ?m, the content of toner particles having a particle diameter of not greater than 4.0 ?m is not higher than 20% by number, the ratio of the first shape factor SF-1 to the second shape factor SF-2 is from 1.00 to 1.15, and the content of toner particles having a SF-2 of not less than 115 is not less than 67.
    Type: Application
    Filed: January 19, 2010
    Publication date: May 13, 2010
    Inventors: Takuya SESHITA, Toyoshi SAWADA, Tomomi SUZUKI, Tsuneyasu NAGATOMO, Satoshi KOJIMA
  • Patent number: 7702271
    Abstract: An image forming apparatus including an image bearing member; a charger; a light irradiator; a developing device; a transfer device; an image bearing member's cleaner; and a fixing device, wherein the fixing device includes a fixing member configured to fix a toner image upon application of heat and pressure thereto; a pressing member configured to press the recording material toward the fixing member; and a cleaning member configured to clean a surface of the fixing member and/or the pressing member, wherein the cleaning member has an outermost layer including a reactive material which increases viscoelasticity of a binder resin of the toner by reacting with the binder resin.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: April 20, 2010
    Assignee: Ricoh Company Limited
    Inventors: Hiroshi Yamada, Fumihiro Sasaki, Shigeru Emoto, Jun Okamoto, Shinji Ohtani, Hiroto Higuchi, Naohito Shimota, Shinichiro Yagi, Junichi Awamura, Tomomi Suzuki, Masami Tomita, Toshiki Nanya, Yoshiki Yamaguchi
  • Patent number: 7695878
    Abstract: An image forming apparatus including an image bearer; a charging device charging the image bearer; a light irradiating device irradiating the charged image bearer with light to form an electrostatic image; a developing device developing the electrostatic image with a developer including a toner to form a toner image on the image bearer; a transfer device transferring the toner image; and a cleaning device cleaning the image bearer, wherein the volume average particle diameter of the toner is greater than 5.0 ?m and less than 5.5 ?m, the content of toner particles having a particle diameter of not greater than 4.0 ?m is not higher than 20% by number, the ratio of the first shape factor SF-1 to the second shape factor SF-2 is from 1.00 to 1.15, and the content of toner particles having a SF-2 of not less than 115 is not less than 67.8% by number.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: April 13, 2010
    Assignee: Ricoh Company Limited
    Inventors: Takuya Seshita, Toyoshi Sawada, Tomomi Suzuki, Tsuneyasu Nagatomo, Satoshi Kojima
  • Patent number: 7695883
    Abstract: To provide a toner containing an ethyl acetate-soluble polyester component and an ethyl acetate-insoluble polyester component, wherein the toner is granulated in an aqueous medium, the ethyl acetate-insoluble polyester component is obtained by elongating and/or cross-linking a modified polyester resin during granulating and/or after granulating, the modified polyester resin is produced by condensation polymerization of an acid component and at least one type of diol compound selected from aliphatic diol and alicyclic diol in the presence of a catalyst, and the mass average molecular weight of the modified polyester resin is 10,000 to 100,000.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: April 13, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahide Yamada, Ryota Inoue, Naohiro Watanabe, Shigeru Emoto, Masahiro Ohki, Akinori Saitoh, Tsunemi Sugiyama, Shinichi Wakamatsu, Toshiki Nanya, Naohito Shimota, Hiroshi Yamada, Junichi Awamura, Tomomi Suzuki, Kazuyuki Hirai, Kazushige Yasumatsu
  • Publication number: 20100085510
    Abstract: An illuminating device includes a light guide plate, a light source disposed on a side face of the light guide plate, and a light modulation element disposed on a surface or on inside of the light guide plate and joined to the light guide plate. The light modulation element has a pair of transparent substrates disposed apart from each other and opposed to each other, a pair of electrodes provided on surfaces of the pair of transparent substrates, and a light modulation layer provided in a gap between the pair of transparent substrates. The light modulation layer includes a first region and a second region both having optical anisotropy and having response speeds to an electric field different from each other.
    Type: Application
    Filed: October 2, 2009
    Publication date: April 8, 2010
    Applicant: SONY CORPORATION
    Inventors: Kentaro Okuyama, Mamoru Mizuno, Harumi Sato, Tomoaki Suzuki, Tomomi Suzuki
  • Publication number: 20100062352
    Abstract: The present invention provides a method for producing a toner, the method including: preparing a wax dispersion liquid by cooling a wax solution, in which a wax is heated and dissolved or dispersed in an organic solvent, in a container so that a standard deviation ? of a temperature distribution between a center portion of the container and an inner wall of the container is 0.5 or less and the cooling rate is 2.0° C./min or more, to precipitate wax particles in the wax solution; forming toner base precursor particles by adding an aqueous phase containing resin fine particles into an oil phase containing at least the wax dispersion liquid, a colorant and a binder resin and mixing the oil phase and the aqueous phase with each other; and preparing toner base particles by removing the solvent from the toner base precursor particles.
    Type: Application
    Filed: September 8, 2009
    Publication date: March 11, 2010
    Inventors: Teruki Kusahara, Junichi Awamura, Tomomi Suzuki, Toshihiko Karato
  • Patent number: 7672863
    Abstract: A load balancing method comprises the steps of: registering a business configuration definition of each business service including a schedule of the business service with a business configuration management repository; storing at least a service level objective of each business service; storing information on performance of each information processing module; acquiring the registered schedule and the stored service level objective of the designated business service; partitioning the schedule of the designated business service into a plurality of partial schedules according to the acquired service level objective; selecting one or more information processing modules whose performance information stored in the performance management table satisfies the service level objective in each partial schedule; and reserving the information processing modules selected for the partial schedules as information processing modules for executing the designated business service in the schedule.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: March 2, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Kurosawa, Yusuke Noda, Tomomi Suzuki
  • Publication number: 20090280421
    Abstract: A method of manufacturing a toner including dispersing a binder resin, a coloring agent and a releasing agent in an organic solvent to obtain an oil phase; dispersing the oil phase in an aqueous medium with a shearing force to obtain a dispersion emulsion; wherein the shearing force is made by a screen or vessel that is situated around a rotor, the screen spinning in a direction opposite to the direction that the rotor spins. Toner produced. Method of using the toner.
    Type: Application
    Filed: May 8, 2009
    Publication date: November 12, 2009
    Inventors: Junichi Awamura, Akinori Saitoh, Osamu Uchinokura, Masahide Yamada, Tomomi Suzuki
  • Publication number: 20090269692
    Abstract: A method of manufacturing the toner comprising dispersing at least one of a binder resin or a precursor thereof, a coloring agent and a releasing agent in an organic solvent to obtain an oil phase,dispersing the oil phase in an aqueous medium with a shearing force to obtain a dispersion emulsion, wherein the dispersion emulsion process has plural stages and the shear speed A of the emulsification process of stage n is faster than the shear speed B of the emulsification process of stage n+1.
    Type: Application
    Filed: April 23, 2009
    Publication date: October 29, 2009
    Inventors: Junichi AWAMURA, Akinori SAITOH, Osamu UCHINOKURA, Tomomi SUZUKI
  • Patent number: 7587161
    Abstract: A fixer fixing a toner including a binder resin and a colorant on a recording medium upon application of at least one of heat and pressure, including: a fixing member fixing the toner on the recording medium; a pressurizing member pressurizing the toner thereon; and a cleaning member collecting the toner from the fixing member or the pressurizing member onto the cleaning member, wherein a storage modulus of the toner collected on the cleaning member is larger than a storage modulus thereof before fixed.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: September 8, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Yamada, Junichi Awamura, Tomomi Suzuki, Hiroto Higuchi, Naohito Shimota, Masami Tomita, Fumihiro Sasaki, Toshiki Nanya
  • Publication number: 20090214975
    Abstract: A toner prepared by a method including dissolving or dispersing at least at least one member selected from the group consisting of binder resins and precursors thereof, a colorant, a release agent, and a layered inorganic mineral in which ions between its layers are at least partially modified with an organic ion in an organic solvent to prepare a solution or a dispersion which is an oil phase; and dispersing the oil phase in an aqueous medium to prepare an emulsified dispersion in which parent toner particles are granulated, wherein the aqueous medium includes a tertiary amine compound.
    Type: Application
    Filed: February 12, 2009
    Publication date: August 27, 2009
    Inventors: Junichi AWAMURA, Akinori Saitoh, Osamu Uchinokura, Masahide Yamada, Tomomi Suzuki
  • Publication number: 20090142093
    Abstract: An image forming toner, including a mother particle including a paraffin wax having a melting point of from 60 to 90° C. and a binder resin, wherein the mother particle has an endothermic peak of the paraffin wax of from 2.0 J/g to 5.5 J/g when measured by a DSC and an aspect ratio of from 0.8 to 0.90.
    Type: Application
    Filed: October 29, 2008
    Publication date: June 4, 2009
    Inventors: Toyoshi SAWADA, Tomomi Suzuki, Tsuneyasu Nagatomo, Satoshi Kojima
  • Publication number: 20090142690
    Abstract: A method of manufacturing a toner including forming a wax liquid dispersion in which a wax is dispersed in an organic solvent (A1), mixing an organic layer including the wax liquid dispersion, a binder resin and an organic solvent (A) to form an oil phase and dispersing and emulsifying the oil phase in an aqueous medium to obtain an emulsified liquid dispersion, wherein the aspect ratio average of the wax in the wax liquid dispersion is from 0.3 to 0.7 and the toner includes toner particles satisfying the following relationship (1) in an amount of 20% by number or smaller based on all toner particles: 0.5<D2/D1, relationship (1), where D1 represents the major diameter (D1) of the toner and D2 represents the major diameter of the wax.
    Type: Application
    Filed: November 28, 2008
    Publication date: June 4, 2009
    Inventors: Junichi AWAMURA, Akinori Saitoh, Masahide Yamada, Osamu Uchinokura, Tomomi Suzuki
  • Publication number: 20090142682
    Abstract: A toner including a binder resin, a coloring agent, a releasing agent and a modified laminar inorganic mineral, wherein the toner is granulated by dispersing the coloring agent, the releasing agent, the modified laminar inorganic mineral and at least one of the binder resin and a precursor thereof in an organic solvent to form an oil phase, dispersing the oil phase in an aqueous medium to obtain a dispersion emulsion and removing solvents therefrom, and the toner satisfies the following relationship (1): 0.2?{1/Dv (?m)}×Sb (m2/g)?1.4, where Dv represents a volume average particle diameter of the toner, and Sb represents a BET specific surface area of the toner.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 4, 2009
    Inventors: Akinori Saitoh, Osamu Uchinokura, Masahide Yamada, Tomomi Suzuki, Junichi Awamura
  • Publication number: 20090142094
    Abstract: A toner including a binder resin and a colorant which produces a torque of from 1.4 to 2.0 mNm, when a cone rotor having a vertical angle of 60° and grooves on a surface thereof intrudes into a bulk of the toner at an intrusion speed of 5 mm/min for a depth of 20 mm while rotating at a rotation speed of 1 rpm. The bulk of the toner is formed by consolidating 30 g of the toner in a cylindrical container having an internal diameter of 60 mm for 60 seconds with a consolidation load of 585 g.
    Type: Application
    Filed: November 14, 2008
    Publication date: June 4, 2009
    Inventors: Toyoshi Sawada, Tomomi Suzuki, Tsuneyasu Nagatomo, Takuya Seshita, Satoshi Kojima, Junichi Awamura
  • Publication number: 20090117480
    Abstract: To provide a toner containing an ethyl acetate-soluble polyester component and an ethyl acetate-insoluble polyester component, wherein the toner is granulated in an aqueous medium, the ethyl acetate-insoluble polyester component is obtained by elongating and/or cross-linking a modified polyester resin during granulating and/or after granulating, the modified polyester resin is produced by condensation polymerization of an acid component and at least one type of diol compound selected from aliphatic diol and alicyclic diol in the presence of a catalyst, and the mass average molecular weight of the modified polyester resin is 10,000 to 100,000.
    Type: Application
    Filed: December 24, 2008
    Publication date: May 7, 2009
    Inventors: Masahide Yamada, Ryota Inoue, Naohiro Watanabe, Shigeru Emoto, Masahiro Ohki, Akinori Saitoh, Tsunemi Sugiyama, Shinichi Wakamatsu, Toshiki Nanya, Naohito Shimota, Hiroshi Yamada, Junichi Awamura, Tomomi Suzuki, Kazuyuki Hirai, Kazushige Yasumatsu