Patents by Inventor Noriaki Egawa

Noriaki Egawa 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: 20140227526
    Abstract: Provided is a belt for electrophotography which is capable of suppressing the occurrence of adhesion to other members and blocking and which is less liable to cause image defects due to a singular protrusion. The belt for electrophotography comprises a surface layer which comprises heteroaggregate including an inorganic oxide particle having an average primary particle diameter of from 10 to 30 nm and an electroconductive metal oxide particle having an average primary particle diameter of from 5 to 40 nm, and a ten-point average roughness Rzjis of a surface of the surface layer satisfies a relationship: 0.3 ?m?Rzjis?0.7 ?m.
    Type: Application
    Filed: April 28, 2014
    Publication date: August 14, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Noriaki Egawa
  • Patent number: 8512811
    Abstract: A process by which an electrophotographic belt having a protective layer more containing a filler on its surface side can be produced at a lower cost. The process is a process for producing an electrophotographic belt having a base layer and a surface layer, and has the steps of (1) forming on the base layer a wet coating of a surface layer forming coating liquid in which a filler has been dispersed and a binder resin stands dissolved; (2) making water adhere to the surface of the wet coating; and (3) drying the wet coating to form the surface layer. The filler is a filler the affinity of which for the water is higher than the affinity the filler has for a dispersion medium of the filler in the coating-liquid.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: August 20, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Noriaki Egawa
  • Patent number: 8445071
    Abstract: A process by which an electrophotographic belt having a protective layer more containing a filler on its surface side can be produced at a lower cost. The process is a process for producing an electrophotographic belt having a base layer and a surface layer, and has the steps of (1) forming on the base layer a wet coating of a surface layer forming coating liquid in which a filler has been dispersed and a binder resin stands dissolved; (2) making water adhere to the surface of the wet coating; and (3) drying the wet coating to form the surface layer. The filler is a filler the affinity of which for the water is higher than the affinity the filler has for a dispersion medium of the filler in the coating-liquid.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: May 21, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Noriaki Egawa
  • Publication number: 20120164318
    Abstract: A process by which an electrophotographic belt having a protective layer more containing a filler on its surface side can be produced at a lower cost. The process is a process for producing an electrophotographic belt having a base layer and a surface layer, and has the steps of (1) forming on the base layer a wet coating of a surface layer forming coating liquid in which a filler has been dispersed and a binder resin stands dissolved; (2) making water adhere to the surface of the wet coating; and (3) drying the wet coating to form the surface layer. The filler is a filler the affinity of which for the water is higher than the affinity the filler has for a dispersion medium of the filler in the coating-liquid.
    Type: Application
    Filed: February 29, 2012
    Publication date: June 28, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Noriaki Egawa
  • Patent number: 7546075
    Abstract: A belt includes a surface layer and an underlayer. An interface between the surface layer and the underlayer is roughened to irregularly reflect incident light.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: June 9, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahide Hirai, Noriaki Egawa
  • Publication number: 20090142501
    Abstract: A process by which an electrophotographic belt having a protective layer more containing a filler on its surface side can be produced at a lower cost. The process is a process for producing an electrophotographic belt having a base layer and a surface layer, and has the steps of (1) forming on the base layer a wet coating of a surface layer forming coating liquid in which a filler has been dispersed and a binder resin stands dissolved; (2) making water adhere to the surface of the wet coating; and (3) drying the wet coating to form the surface layer. The filler is a filler the affinity of which for the water is higher than the affinity the filler has for a dispersion medium of the filler in the coating-liquid.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 4, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Noriaki Egawa
  • Patent number: 7462389
    Abstract: A transfer belt composed of a single layer or a plurality of layers is disclosed in which the single layer or the outermost layer of the layers constituting the transfer belt is a layer formed from a polymer composition. The polymer composition contains particles having an average particle diameter of 20 nm or less and a refractive index of 2.3 or more with respect to light of 800 nm in wavelength. The transfer belt has a surface roughness having a maximum height Rz of 0.3 ?m or less according to JIS B 0601, 2001.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: December 9, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Noriaki Egawa
  • Publication number: 20060275570
    Abstract: A transfer belt composed of a single layer or a plurality of layers is disclosed in which the single layer or the outermost layer of the layers constituting the transfer belt is a layer formed from a polymer composition. The polymer composition contains particles having an average particle diameter of 20 nm or less and a refractive index of 2.3 or more with respect to light of 800 nm in wavelength. The transfer belt has a surface roughness having a maximum height Rz of 0.3 ?m or less according to JIS B 0601, 2001.
    Type: Application
    Filed: June 1, 2006
    Publication date: December 7, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventor: Noriaki Egawa
  • Publication number: 20060159494
    Abstract: A belt includes a surface layer and an underlayer. An interface between the surface layer and the underlayer is roughened to irregularly reflect incident light.
    Type: Application
    Filed: December 21, 2005
    Publication date: July 20, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Masahide Hirai, Noriaki Egawa
  • Publication number: 20060127138
    Abstract: A semiconductive endless belt formed of a resin composition containing a resin capable of being formed into a film only by removing a solvent from a resin solution, and having a pencil hardness of 3H or more according to JIS K 5400 and a refractive index of 1.75 or more for light having a wavelength of 900 ?m. Also disclosed is an electrophotographic apparatus having this semiconductive endless belt.
    Type: Application
    Filed: December 12, 2005
    Publication date: June 15, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventor: Noriaki Egawa