Patents by Inventor Koji Imamiya
Koji Imamiya 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: 20140321872Abstract: An image forming apparatus including: a heating member which heats a toner image on a recording medium using a decolorizable toner containing a coloring agent containing a color developable compound and a color developing agent and having a capsule structure covered with an outer shell; a pressing member which is in press contact with the heating member to form a nip portion and nips and conveys the recording medium in cooperation with the heating member; a temperature control section which controls the temperature of the heating member to a temperature not higher than the density maintaining threshold temperature and not lower than the melting threshold temperature; and a conveyance control section which controls the conveying speed of the recording medium such that a time required for the recording medium to pass through the nip portion is 100 msec or more.Type: ApplicationFiled: July 11, 2014Publication date: October 30, 2014Inventor: Koji Imamiya
-
Patent number: 8805224Abstract: An image forming apparatus including: a heating member which heats a toner image on a recording medium using a decolorizable toner containing a coloring agent containing a color developable compound and a color developing agent and having a capsule structure covered with an outer shell; a pressing member which is in press contact with the heating member to form a nip portion and nips and conveys the recording medium in cooperation with the heating member; a temperature control section which controls the temperature of the heating member to a temperature not higher than the density maintaining threshold temperature and not lower than the melting threshold temperature; and a conveyance control section which controls the conveying speed of the recording medium such that a time required for the recording medium to pass through the nip portion is 100 msec or more.Type: GrantFiled: April 26, 2011Date of Patent: August 12, 2014Assignee: Toshiba Tec Kabushiki KaishaInventor: Koji Imamiya
-
Publication number: 20140170554Abstract: An electrophotographic toner contains an electron donating color former compound, an electron accepting color developing agent, and a binder resin, wherein a toluene insoluble content in the electrophotographic toner is 10% by mass or more and 40% by mass or less, and the toner is decolorized by heating.Type: ApplicationFiled: February 20, 2014Publication date: June 19, 2014Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventors: Takayasu Aoki, Yasuhito Noda, Koji Imamiya, Tsuyoshi Itou, Noboru Furuyama
-
Patent number: 8730285Abstract: According to one embodiment, a decoloring apparatus includes: a heating rotating member having roughness (Rz) of a surface, which comes into contact with a conveyed sheet, equal to or larger than 3.5 ?m and equal to or smaller than 6.0 ?m and configured to heat and decolor a decolorable colorant on the sheet; and a pressing member configured to come into press contact with the heating rotating member to form a nip section between the pressing member and the heating rotating member and cooperate with the heating rotating member to nip and convey the sheet.Type: GrantFiled: June 18, 2013Date of Patent: May 20, 2014Assignee: Toshiba Tec Kabushiki KaishaInventors: Takayasu Aoki, Koji Imamiya, Noboru Furuyama
-
Patent number: 8691487Abstract: An electrophotographic toner contains an electron donating color former compound, an electron accepting color developing agent, and a binder resin, wherein a toluene insoluble content in the electrophotographic toner is 10% by mass or more and 40% by mass or less, and the toner is decolorized by heating.Type: GrantFiled: June 18, 2013Date of Patent: April 8, 2014Assignee: Toshiba Tec Kabushiki KaishaInventors: Takayasu Aoki, Yasuhito Noda, Koji Imamiya, Tsuyoshi Itou, Noboru Furuyama
-
Publication number: 20140072322Abstract: According to one embodiment, an image forming apparatus includes a mode setting section configured to set an operation mode in a manner that the image forming apparatus is operated in an erasing mode if an erasing operation is instructed, a supplying section configured to supply a medium on which the image formation is completed, and which is set in an designated or specified receiving section, a decoloring section configured to decolor the color of the formed image by carrying the medium to a heating section that includes at least heating and decoloring function, and a return section configured to return the operation mode to a predetermined mode except for the erasing mode from the erasing mode, when the last medium on which the image formation is completed and which is set in the receiving section is decolored.Type: ApplicationFiled: November 15, 2013Publication date: March 13, 2014Applicants: TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBAInventors: Koji Imamiya, Takayasu Aoki, Tsuyoshi Itou, Hiromichi Mitamura, Noboru Furuyama
-
Publication number: 20140055546Abstract: According to one embodiment, an image processing apparatus includes a heating unit configured to heat an image formed on a sheet, and a control unit configured to control a temperature of the heating unit to be (i) above a first temperature when performing an image erasing operation on a first sheet supplied thereto, and (ii) below a second temperature that is lower than the first temperature when performing an image fixing operation on a second sheet supplied thereto. The control unit permits a first type of job to interrupt a currently-executing job while the image erasing operation is being performed and prohibits a second type of job from interrupting the currently-executing job while the image erasing operation is being performed.Type: ApplicationFiled: August 23, 2013Publication date: February 27, 2014Applicants: TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBAInventor: Koji IMAMIYA
-
Patent number: 8615189Abstract: According to one embodiment, an image forming apparatus includes a mode setting section configured to set an operation mode in a manner that the image forming apparatus is operated in an erasing mode if an erasing operation is instructed, a supplying section configured to supply a medium on which the image formation is completed, and which is set in an designated or specified receiving section, a decoloring section configured to decolor the color of the formed image by carrying the medium to a heating section that includes at least heating and decoloring function, and a return section configured to return the operation mode to a predetermined mode except for the erasing mode from the erasing mode, when the last medium on which the image formation is completed and which is set in the receiving section is decolored.Type: GrantFiled: March 17, 2011Date of Patent: December 24, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Koji Imamiya, Takayasu Aoki, Tsuyoshi Itou, Hiromichi Mitamura, Noboru Furuyama
-
Publication number: 20130336677Abstract: According to one embodiment, a method for erasing an image includes erasing an image formed using a toner containing at least a binder resin, an electron donating color developable agent, and an electron accepting color developing agent by heating for 10 seconds or less. A color difference ?E between a region where the image is erased and a paper is 5 or less.Type: ApplicationFiled: August 23, 2013Publication date: December 19, 2013Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventors: Takayasu Aoki, Koji Imamiya, Katsunori Mizuta
-
Patent number: 8603722Abstract: There is provided a method for producing a toner that includes encapsulated erasable colored fine particles aggregated with fine particles that contain at least a binder resin and a release agent. The method includes: mixing a dispersion of erasable fine particles with an aggregating agent to form an aggregating agent-containing colored fine particle dispersion; and mixing the aggregating agent-containing colored fine particle dispersion with a fine particle dispersion that contains at least a binder resin and a release agent, so as to aggregate the aggregating agent-containing colored fine particles with the fine particles that contain at least a binder resin and a release agent. In this way, the encapsulated colored fine particles are prevented from being released from the resultant toner particles, and an erasable toner can be obtained that has a narrow particle size distribution and that produces less fogging.Type: GrantFiled: April 14, 2011Date of Patent: December 10, 2013Assignee: Toshiba Tec Kabushiki KaishaInventors: Tsuyoshi Itou, Takayasu Aoki, Koji Imamiya, Masahiro Ikuta
-
Publication number: 20130278701Abstract: According to one embodiment, a decoloring apparatus includes: a heating rotating member having roughness (Rz) of a surface, which comes into contact with a conveyed sheet, equal to or larger than 3.5 ?m and equal to or smaller than 6.0 ?m and configured to heat and decolor a decolorable colorant on the sheet; and a pressing member configured to come into press contact with the heating rotating member to form a nip section between the pressing member and the heating rotating member and cooperate with the heating rotating member to nip and convey the sheet.Type: ApplicationFiled: June 18, 2013Publication date: October 24, 2013Inventors: Takayasu Aoki, Koji Imamiya, Noboru Furuyama
-
Publication number: 20130279944Abstract: An electrophotographic toner contains an electron donating color former compound, an electron accepting color developing agent, and a binder resin, wherein a toluene insoluble content in the electrophotographic toner is 10% by mass or more and 40% by mass or less, and the toner is decolorized by heating.Type: ApplicationFiled: June 18, 2013Publication date: October 24, 2013Inventors: Takayasu Aoki, Yasuhito Noda, Koji Imamiya, Tsuyoshi Itou, Noboru Furuyama
-
Patent number: 8541156Abstract: According to one embodiment, a method for erasing an image includes erasing an image formed using a toner containing at least a binder resin, an electron donating color developable agent, and an electron accepting color developing agent by heating for 10 seconds or less. A color difference ?E between a region where the image is erased and a paper is 5 or less.Type: GrantFiled: May 23, 2011Date of Patent: September 24, 2013Assignee: Toshiba Tec Kabushiki KaishaInventors: Takayasu Aoki, Koji Imamiya, Katsunori Mizuta
-
Patent number: 8512461Abstract: A decolorizable inkjet ink includes a first particle that contains a color-forming compound, a color-developing agent, and a polar group-containing crystalline binder; and a second particle that contains a decoloring agent and a polar group-containing crystalline binder.Type: GrantFiled: April 25, 2011Date of Patent: August 20, 2013Assignee: Toshiba Tec Kabushiki KaishaInventors: Tsuyoshi Itou, Takayasu Aoki, Koji Imamiya
-
Patent number: 8487972Abstract: According to one embodiment, a decoloring apparatus includes: a heating rotating member having roughness (Rz) of a surface, which comes into contact with a conveyed sheet, equal to or larger than 3.5 ?m and equal to or smaller than 6.0 ?m and configured to heat and decolor a decolorable colorant on the sheet; and a pressing member configured to come into press contact with the heating rotating member to form a nip section between the pressing member and the heating rotating member and cooperate with the heating rotating member to nip and convey the sheet.Type: GrantFiled: April 25, 2011Date of Patent: July 16, 2013Assignee: Toshiba Tec Kabushiki KaishaInventors: Takayasu Aoki, Koji Imamiya, Noboru Furuyama
-
Patent number: 8486598Abstract: An electrophotographic toner contains an electron donating color former compound, an electron accepting color developing agent, and a polyester binder resin having a weight average molecular weight Mw of 6000 or more and 25000 or less, and the toner is decolorized by heating.Type: GrantFiled: November 19, 2010Date of Patent: July 16, 2013Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventors: Takayasu Aoki, Yasuhito Noda, Koji Imamiya, Tsuyoshi Itou, Noboru Furuyama
-
Patent number: 8465897Abstract: An electrophotographic toner, which is decolorized by heating and a glossiness after decolorization of which is less than 10, comprising an electron donating color former compound, an electron accepting color developing agent, and a polyester binder resin.Type: GrantFiled: April 29, 2011Date of Patent: June 18, 2013Assignee: Toshiba Tec Kabushiki KaishaInventors: Takayasu Aoki, Yasuhito Noda, Koji Imamiya, Tsuyoshi Itou, Noboru Furuyama
-
Publication number: 20130011149Abstract: An image forming apparatus includes a count section configured to count time during which no image forming is performed and a control section configured to allow heating of a heat generating section at temperature for decolorizing after the time counted by the count section reaches the a predetermined threshold time.Type: ApplicationFiled: June 12, 2012Publication date: January 10, 2013Applicants: TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBAInventors: Masato Ogasawara, Koji Imamiya
-
Publication number: 20110294052Abstract: According to one embodiment, a method for erasing an image includes erasing an image formed using a toner containing at least a binder resin, an electron donating color developable agent, and an electron accepting color developing agent by heating for 10 seconds or less. A color difference ?E between a region where the image is erased and a paper is 5 or less.Type: ApplicationFiled: May 23, 2011Publication date: December 1, 2011Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventors: Takayasu Aoki, Koji Imamiya, Katsunori Mizuta
-
Publication number: 20110262166Abstract: An image forming apparatus including: a heating member which heats a toner image formed on a recording medium using a decolorizable toner containing a binder resin and a coloring agent containing a color developable compound and a color developing agent and having a capsule structure covered with an outer shell; a pressing member which is in press contact with the heating member to form a nip portion and nips and conveys the recording medium in cooperation with the heating member; a temperature control section which controls the temperature of the heating member to a temperature not higher than the density maintaining threshold temperature of the toner and not lower than the melting threshold temperature of the toner; and a conveyance control section which controls the conveying speed of the recording medium in the nip portion such that a time required for the recording medium to pass through the nip portion is 100 msec or more.Type: ApplicationFiled: April 26, 2011Publication date: October 27, 2011Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventor: Koji Imamiya