Patents by Inventor Rie Miyazaki
Rie Miyazaki 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: 9004664Abstract: An ink jet recording aqueous pigment ink contains a self-dispersing pigment, a quaternary amino acid, a non-polymeric, nonionic material having a melting point of 40° C. or more, and at least one of trialkylamine and trialkanolamine. The content of the non-polymeric, nonionic material is 3% to 15% by mass relative to the total mass of the ink jet recording aqueous pigment ink.Type: GrantFiled: April 12, 2012Date of Patent: April 14, 2015Assignee: Seiko Epson CorporationInventors: Soichi Yamazaki, Rie Miyazaki, Miharu Kanaya, Hiroshi Kato, Ayako Nishiki, Hideki Okada
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Publication number: 20120262516Abstract: An ink jet recording aqueous pigment ink contains a self-dispersing pigment, a quaternary amino acid, a non-polymeric, nonionic material having a melting point of 40° C. or more, and at least one of trialkylamine and trialkanolamine. The content of the non-polymeric, nonionic material is 3% to 15% by mass relative to the total mass of the ink jet recording aqueous pigment ink.Type: ApplicationFiled: April 12, 2012Publication date: October 18, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Soichi Yamazaki, Rie Miyazaki, Miharu Kanaya, Hiroshi Kato, Ayako Nishiki, Hideki Okada
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Patent number: 7189486Abstract: The present invention provides a toner which can properly ensure elasticity and viscosity after transiting fixing nip, can improve surface smoothness of the fixing surface, fixing strength of a toner and transparency, low temperature fixing ability, and can prevent fattening of characters by using dynamic viscoelastic characteristics more conformable for actual toner behavior in fixation by heating, further provides an image-forming apparatus capable of forming a high quality image while enhancing low temperature fixing ability, realizing oil-less fixation and preventing offset of a toner.Type: GrantFiled: February 27, 2004Date of Patent: March 13, 2007Assignee: Seiko Epson CorporationInventors: Takuya Kadota, Hidehiro Takano, Rie Miyazaki
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Patent number: 7125636Abstract: The present invention provides a toner capable of effectively controlling hot offset of a toner in fixing characteristics, while effectively preventing the winding of a recording medium round a fixing member.Type: GrantFiled: February 27, 2004Date of Patent: October 24, 2006Assignee: Seiko Epson CorporationInventors: Rie Miyazaki, Takuya Kadota, Hidehiro Takano
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Patent number: 7105262Abstract: The invention provides a liquid developer that is used in an apparatus for forming an image by developing an electrostatic latent image formed on a latent image carrying member, transferring the developed image to a recording medium, and then fixing the image, in which the liquid developer contains a carrier liquid and particles formed with a composition containing a binder resin, a colorant, and a charge controlling agent comprising a charge controlling substance containing an ionic or neutral substance, wherein the charge controlling substance containing an ionic or neutral substance is supported by an inorganic porous material.Type: GrantFiled: January 5, 2004Date of Patent: September 12, 2006Assignee: Seiko Epson CorporationInventors: Hidehiro Takano, Tahei Ishiwatari, Takuya Kadota, Rie Miyazaki
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Patent number: 7018766Abstract: The invention provides a toner comprising a binder resin, a colorant, and a charge control agent comprising a charge control substance supported by an inorganic porous material, and having been subjected to thermal fairing treatment. Also disclosed are a toner obtained by a process comprising the steps of: kneading a composition containing a binder resin, a colorant and a charge control agent comprising an ionic or neutral substance supported by an inorganic porous material; pulverizing the kneaded product; adding the pulverized product to a solvent immiscible with water; dispersing the mixture in an aqueous medium; and removing the solvent by at least one of heating and pressure reduction, and a toner comprising associated particles formed from: primary particles obtained from an emulsion of a binder resin; a colorant; and a charge control agent comprising a water soluble charge control substance incorporated in inorganic fine particles.Type: GrantFiled: November 6, 2003Date of Patent: March 28, 2006Assignee: Seiko Epson CorporationInventors: Hidehiro Takano, Tahei Ishiwatari, Takuya Kadota, Rie Miyazaki
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Publication number: 20050003293Abstract: The invention provides a liquid developer that is used in an apparatus for forming an image by developing an electrostatic latent image formed on a latent image carrying member, transferring the developed image to a recording medium, and then fixing the image, in which the liquid developer contains a carrier liquid and particles formed with a composition containing a binder resin, a colorant, and a charge controlling agent comprising a charge controlling substance containing an ionic or neutral substance, wherein the charge controlling substance containing an ionic or neutral substance is supported by an inorganic porous material.Type: ApplicationFiled: January 5, 2004Publication date: January 6, 2005Inventors: Hidehiro Takano, Tahei Ishiwatari, Takuya Kadota, Rie Miyazaki
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Publication number: 20040234878Abstract: The present invention provides a toner capable of effectively controlling hot offset of a toner in fixing characteristics, while effectively preventing the winding of a recording medium round a fixing member.Type: ApplicationFiled: February 27, 2004Publication date: November 25, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Rie Miyazaki, Takuya Kadota, Hidehiro Takano
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Publication number: 20040229150Abstract: The present invention provides a toner capable of effectively controlling hot offset of a toner in fixing characteristics, while effectively preventing the winding of a recording medium round a fixing member.Type: ApplicationFiled: February 27, 2004Publication date: November 18, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Rie Miyazaki, Takuya Kadota, Hidehiro Takano
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Publication number: 20040229148Abstract: The present invention provides a toner which can properly ensure elasticity and viscosity after transiting fixing nip, can improve surface smoothness of the fixing surface, fixing strength of a toner and transparency, low temperature fixing ability and offset resistance of a toner, and can prevent fattening of characters by using dynamic viscoelastic characteristics more conformable for actual toner behavior in fixation by heating, further provides an image-forming apparatus capable of forming a high quality image while enhancing low temperature fixing ability, realizing oil-less fixation and preventing offset of a toner.Type: ApplicationFiled: February 27, 2004Publication date: November 18, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Takuya Kadota, Hidehiro Takano, Rie Miyazaki
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Publication number: 20040229149Abstract: The present invention provides a toner which can properly ensure elasticity and viscosity after transiting fixing nip, can improve surface smoothness of the fixing surface, fixing strength of a toner and transparency, low temperature fixing ability, and can prevent fattening of characters by using dynamic viscoelastic characteristics more conformable for actual toner behavior in fixation by heating, further provides an image-forming apparatus capable of forming a high quality image while enhancing low temperature fixing ability, realizing oil-less fixation and preventing offset of a toner.Type: ApplicationFiled: February 27, 2004Publication date: November 18, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Takuya Kadota, Hidehiro Takano, Rie Miyazaki
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Publication number: 20040143036Abstract: The invention provides a toner comprising a binder resin, a colorant, and a charge control agent comprising a charge control substance supported by an inorganic porous material, and having been subjected to thermal fairing treatment. Also disclosed are a toner obtained by a process comprising the steps of: kneading a composition containing a binder resin, a colorant and a charge control agent comprising an ionic or neutral substance supported by an inorganic porous material; pulverizing the kneaded product; adding the pulverized product to a solvent immiscible with water; dispersing the mixture in an aqueous medium; and removing the solvent by at least one of heating and pressure reduction, and a toner comprising associated particles formed from: primary particles obtained from an emulsion of a binder resin; a colorant; and a charge control agent comprising a water soluble charge control substance incorporated in inorganic fine particles.Type: ApplicationFiled: November 6, 2003Publication date: July 22, 2004Applicant: SEIKO EPSON CORPORATIONInventors: Hidehiro Takano, Tahei Ishiwatari, Takuya Kadota, Rie Miyazaki