Patents by Inventor Kageyuki Tomoyori
Kageyuki Tomoyori 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).
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Patent number: 7547496Abstract: An image forming method comprising: developing a latent image formed on a cylindrical electrophotographic photoreceptor having a cylindricity of 5 to 40 ?m, with a developer comprising toner in which a ratio Dv50/Dp50 of a 50% volume particle diameter Dv50 to a 50% number particle diameter Dp50 is 1.0 to 1.15, a ratio Dv75/Dp75 of a cumulative 75% volume particle diameter from the largest volume particle diameter Dv75, to a cumulative 75% number particle diameter from the largest number particle diameter Dp75, is 1.0 to 1.20, and the number of toner particles having a particle diameter of 0.7×Dp50 or less is 10 percent by number or less, to form a toner image; and transferring the toner image from the photoreceptor to an intermediate transferring member, is disclosed.Type: GrantFiled: October 22, 2004Date of Patent: June 16, 2009Assignee: Konica Minolta Business Technologies, Inc.Inventors: Masao Asano, Kageyuki Tomoyori
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Patent number: 7473510Abstract: An electrophotographic photoreceptor to be used in an image forming apparatus having a charge providing means by contacting a charging member to an electrophotographic photoreceptor is disclosed. The photoreceptor has at least an interlayer, a charge generation layer and a charge transfer layer each provided on an electroconductive substrate, and the interlayer has a thickness of from 5 to 25 ?m and the charge transfer layer has a thickness of from 5 to 20 ?m. An image forming apparatus, image forming method and cartridge for the method are also disclosed.Type: GrantFiled: July 7, 2004Date of Patent: January 6, 2009Assignee: Konica Minolta Business Technologies, Inc.Inventors: Kageyuki Tomoyori, Hirofumi Hayata, Tomoo Sakimura, Tsuyoshi Shimoda
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Patent number: 7429440Abstract: An electrophotographic photoreceptor includes a surface layer having a contact angle of 90 to 130° on a cylindrical conductive substrate having a cylindricity of 5 to 40 ?m.Type: GrantFiled: August 25, 2004Date of Patent: September 30, 2008Assignee: Konica Minolta Holdings, Inc.Inventors: Masao Asano, Kageyuki Tomoyori
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Patent number: 7358020Abstract: An image forming apparatus for enabling an image forming which is stable for a long time, by using a charging method in which the amount of generated ozone or nitrogen oxides is reduced and consumed electric power is low. An image forming method includes: a charging section for charging a photoreceptor by contacting on the photoreceptor; an exposure section for forming a static latent image on the photoreceptor by an exposure; a developing section for developing a toner image on the static latent image by a toner having a toner particle which uses a binder resin and a colorant as a component, in which a total quantity of a volatile material measured by a headspace method is 350 ppm or less; and a transfer section for transferring the toner image on a transfer material.Type: GrantFiled: September 10, 2004Date of Patent: April 15, 2008Assignee: Konica Minolta Business Technologies, Inc.Inventors: Kazuhisa Shida, Kageyuki Tomoyori, Hirofumi Hayata, Masao Asano, Tomoe Kitani
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Patent number: 7202005Abstract: Disclosed is an image forming method comprising: developing a latent image formed on a cylindrical electrophotographic photoreceptor having a cylindricity of 5 to 40 ?m, with a developer comprising a toner sufficing at least one of conditions (1) to (5): (1) A toner includes toner particles having a variation coefficient of shape coefficient of not more than 16 percent. (2) A toner includes at least 65 percent of toner particles having a shape coefficient in the range of 1.2 to 1.6. (3) A toner includes at least 50% of toner particles in number having no corner. (4) A toner includes toner particles having a number variation coefficient in the number particle size distribution of not more than 27 percent.Type: GrantFiled: March 15, 2004Date of Patent: April 10, 2007Assignee: Konica Minolta Holdings, Inc.Inventor: Kageyuki Tomoyori
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Patent number: 7183035Abstract: An image forming method having: developing a latent image formed on a cylindrical electrophotographic photoreceptor having a cylindricity of 5 to 40 ?m, with a developer comprising a toner which comprises a ratio Dv50/Dp50 of a 50% volume particle diameter Dv50 to a 50% number particle diameter Dp50 of 1.0 to 1.15, a ratio Dv75/Dp75 of a cumulative 75% volume particle diameter from a largest volume particle diameter Dv75 to a cumulative 75% number particle diameter from a largest number particle diameter of Dp75 of 1.0 to 1.20, and toner particles having a particle diameter of 0.7×Dp50 or less in an amount of 10 percent by number or less.Type: GrantFiled: March 17, 2004Date of Patent: February 27, 2007Assignee: Konica Minolta Holdings, Inc.Inventor: Kageyuki Tomoyori
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Publication number: 20060088776Abstract: An image forming method comprising: developing a latent image formed on a cylindrical electrophotographic photoreceptor having a cylindricity of 5 to 40 ?m, with a developer comprising toner in which a ratio Dv50/Dp50 of a 50% volume particle diameter Dv50 to a 50% number particle diameter Dp50 is 1.0 to 1.15, a ratio Dv75/Dp75 of a cumulative 75% volume particle diameter from the largest volume particle diameter Dv75, to a cumulative 75% number particle diameter from the largest number particle diameter Dp75, is 1.0 to 1.20, and the number of toner particles having a particle diameter of 0.7×Dp50 or less is 10 percent by number or less, to form a toner image; and transferring the toner image from the photoreceptor to an intermediate transferring member, is disclosed.Type: ApplicationFiled: October 22, 2004Publication date: April 27, 2006Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Masao Asano, Kageyuki Tomoyori
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Publication number: 20060046170Abstract: An electrophotographic photoreceptor includes a surface layer having a contact angle of 90 to 130° on a cylindrical conductive substrate having a cylindricity of 5 to 40 ?m.Type: ApplicationFiled: August 25, 2004Publication date: March 2, 2006Applicant: Konica Minolta Holdings, Inc.Inventors: Masao Asano, Kageyuki Tomoyori
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Publication number: 20050208415Abstract: An image forming method having: developing a latent image formed on a cylindrical electrophotographic photoreceptor having a cylindricity of 5 to 40 ?m, with a developer comprising a toner which comprises a ratio Dv50/Dp50 of a 50% volume particle diameter Dv50 to a 50% number particle diameter Dp50 of 1.0 to 1.15, a ratio Dv75/Dp75 of a cumulative 75% volume particle diameter from a largest volume particle diameter Dv75 to a cumulative 75% number particle diameter from a largest number particle diameter of Dp75 of 1.0 to 1.20, and toner particles having a particle diameter of 0.7×Dp50 or less in an amount of 10 percent by number or less.Type: ApplicationFiled: March 17, 2004Publication date: September 22, 2005Applicant: Konica Minolta Holdings, Inc.Inventor: Kageyuki Tomoyori
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Publication number: 20050202333Abstract: Disclosed is an image forming method comprising: developing a latent image formed on a cylindrical electrophotographic photoreceptor having a cylindricity of 5 to 40 ?m, with a developer comprising a toner sufficing at least one of conditions (1) to (5): (1) A toner includes toner particles having a variation coefficient of shape coefficient of not more than 16 percent. (2) A toner includes at least 65 percent of toner particles having a shape coefficient in the range of 1.2 to 1.6. (3) A toner includes at least 50% of toner particles in number having no corner. (4) A toner includes toner particles having a number variation coefficient in the number particle size distribution of not more than 27 percent.Type: ApplicationFiled: March 15, 2004Publication date: September 15, 2005Applicant: Konica Minolta Holdings, Inc.Inventor: Kageyuki Tomoyori
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Publication number: 20050064318Abstract: An image forming apparatus for enabling an image forming which is stable for a long time, by using a charging method in which the amount of generated ozone or nitrogen oxides is reduced and consumed electric power is low. An image forming method includes: a charging section for charging a photoreceptor by contacting on the photoreceptor; an exposure section for forming a static latent image on the photoreceptor by an exposure; a developing section for developing a toner image on the static latent image by a toner having a toner particle which uses a binder resin and a colorant as a component, in which a total quantity of a volatile material measured by a headspace method is 350 ppm or less; and a transfer section for transferring the toner image on a transfer material.Type: ApplicationFiled: September 10, 2004Publication date: March 24, 2005Applicant: Konica Minolta Business Technologies, Inc.Inventors: Kazuhisa Shida, Kageyuki Tomoyori, Hirofumi Hayata, Masao Asano, Tomoe Kitani
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Publication number: 20050019683Abstract: An electrophotographic photoreceptor to be used in an image forming apparatus having a charge providing means by contacting a charging member to an electrophotographic photoreceptor is disclosed. The photoreceptor has at least an interlayer, a charge generation layer and a charge transfer layer each provided on an electroconductive substrate, and the interlayer has a thickness of from 5 to 25 ?m and the charge transfer layer has a thickness of from 5 to 20 ?m. An image forming apparatus, image forming method and cartridge for the method are also disclosed.Type: ApplicationFiled: July 7, 2004Publication date: January 27, 2005Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Kageyuki Tomoyori, Hirofumi Hayata, Tomoo Sakimura, Tsuyoshi Shimoda
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Patent number: 4483107Abstract: A method of polishing an electrophotographic photoconductive member, which comprises polishing said surface with polishing particles selected from the group consisting of solid organic polishing particles composed of a polysilsesquioxane having, on its silicon atoms, substituents selected from a lower alkyl group having 2 to 5 carbon atoms, an alkoxy group, an aryl group and an aralkyl group; a combination of said solid organic polishing particles and solid inorganic polishing particles; and a combination of solid organic polishing particles composed of polymethylsilsesquioxane and solid inorganic polishing particles.Type: GrantFiled: December 7, 1982Date of Patent: November 20, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kageyuki Tomoyori, Tatsuo Uchida, Tadashi Noda