Patents by Inventor Tatsuya Nagase
Tatsuya Nagase 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: 8642242Abstract: Provided is a method of manufacturing toner by which the toner capable of forming high quality images and reproducing high density gradation, which exhibits an excellent high-temperature offsetting property together with excellent low-temperature fixability, and provides appropriate gloss with respect to images to be formed, can be stably prepared; and also provided is the toner. After conducting a step in which particles made of at least a crystalline polyester resin are coagulated to form core coagulated particles, and an unsaturated amorphous polyester resin particle is attached onto the surface of each of the core coagulated particles to form core-shell type coagulated particles, radical polymerization reaction is conducted by acting a radical polymerization initiator on the foregoing core-shell type coagulated particles to conduct a step in which a layer made of a crosslinking amorphous polyester resin is formed on the surface of each of the core coagulated particles.Type: GrantFiled: October 26, 2011Date of Patent: February 4, 2014Assignee: Konica Minolta Business Technologies, Inc.Inventors: Saburou Hiraoka, Mikihiko Sukeno, Hajime Tadokoro, Ken Ohmura, Tatsuya Nagase, Tomomi Oshiba, Kenji Hayashi, Tomoko Mine
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Patent number: 8632934Abstract: Provided is a method for forming an image containing the sequential steps of: forming a foil adhesion toner image on an image supporting substrate with a foil adhesion toner (?) which comprises at least a binder resin containing a thermoplastic resin using an electrophotographic method; forming a foil image on the foil adhesion toner image by contacting a transfer foil on the foil adhesion toner image with applying heat; and forming a visible toner image on the image supporting substrate which has been formed with the foil image with at least one image forming toner (?) using an electrophotographic method, followed by fixing the visible toner image by applying heat and pressure thereto, wherein ?(Tsp(?)?Tsp(?)) is 5 to 50° C., provided that Tsp (?) is a softening point of the foil adhesion toner (?) and Tsp (?) is a softening point of the image forming toner (?).Type: GrantFiled: March 22, 2012Date of Patent: January 21, 2014Assignee: Konica Minolta Business Technologies, Inc.Inventors: Aya Shirai, Tatsuya Nagase, Asao Matsushima, Yasuko Uchino, Ryuichi Hiramoto, Michiyo Fujita
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Patent number: 8586278Abstract: A method of producing an electrostatic image developing toner comprising toner particles comprising a binder resin containing at least a non-crystalline polyester resin having a crosslinking structure and a crystalline polyester resin, the method comprising the steps of (a-1) preparing a crystalline polyester resin particle aqueous dispersion liquid; (a-2) preparing a polymerizable unsaturated non-crystalline polyester resin aqueous dispersion liquid; (b) preparing crosslinking non-crystalline polyester resin particles by adding a radical polymerization initiator to the aqueous dispersion liquid of particles containing the non-crystalline polyester resin having a polymerizable unsaturated bond; (c) preparing core particles by aggregating at least the particles containing the crystalline polyester resin in an aqueous medium; and (d) preparing a shell layer containing the non-crystalline polyester resin having a crosslinking structure by fusing the particles containing the non-crystalline polyester resin havingType: GrantFiled: October 13, 2011Date of Patent: November 19, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Mikihiko Sukeno, Hajime Tadokoro, Ken Ohmura, Tatsuya Nagase, Tomomi Oshiba, Kenji Hayashi, Saburou Hiraoka, Tomoko Mine
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Patent number: 8530130Abstract: A method of forming a glossy image is disclosed, comprising the steps of (a) forming a clear toner particle layer with clear toner particles on an image support, (b) heating and pressing the clear toner particle layer formed on the image support, while bringing the surface of the clear toner particle layer into contact with a belt, and (c) cooling the clear toner particle layer to form a clear toner layer, wherein the clear toner particles contain a binder resin and a releasing agent and exhibit a heat quantity of fusion of not less than 3.0 J/g and not more than 9.5 J/g, and the clear toner particles meeting the following requirement: 0.5?S2/S1?1.0.Type: GrantFiled: September 23, 2011Date of Patent: September 10, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Yasuko Uchino, Tatsuya Nagase, Asao Matsushima, Aya Shirai, Ryuichi Hiramoto, Michiyo Fujita
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Patent number: 8530122Abstract: A method for forming an image at least comprising steps of forming an electrostatic latent image by exposing an electrophotographic photoreceptor, forming a foil transferring face by supplying a toner onto the electrophotographic photoreceptor having the electrostatic latent image, transferring the foil transferring face formed on the electrophotographic photoreceptor to a base substance, fixing the foil transferring face transferred on the base substance, supplying a transfer foil to the base substance fixed with the foil transferring face, adhering the transfer foil onto the foil transferring face by heating under a condition of contacting the transfer foil with the foil transferring face; and removing the transfer foil from the base substance while leaving the foil adhered onto the foil transferring face, wherein the toner comprises a binder resin having a softening temperature in the range of from not less than 105° C. to not more than 140° C.Type: GrantFiled: July 18, 2011Date of Patent: September 10, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Yasuko Uchino, Tatsuya Nagase, Asao Matsushima, Aya Shirai, Ryuichi Hiramoto, Michiyo Fujita
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Patent number: 8507169Abstract: A two-component developer is disclosed, composing a toner comprising parent toner particles with an attached external additive and a carrier provided with a resin covering layer on a surface of a core particle, wherein the resin covering layer comprises a binder resin comprising an acrylic resin and when the resin covering layer is divided in half to a core particle side and a surface side, a nitrogen element content of the core particle side is larger than a nitrogen element content of the surface side.Type: GrantFiled: February 28, 2012Date of Patent: August 13, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Tomoko Mine, Mikihiko Sukeno, Tatsuya Nagase, Tomomi Oshiba, Hiroyuki Kozuru, Saburou Hiraoka, Yoshiyasu Matsumoto, Kosuke Nakamura, Hitomi Motani, Takanari Kayamori
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Publication number: 20130202337Abstract: An image forming method includes: performing a first gloss processing and a second gloss processing. The first gloss processing includes: heating and pressing a processed body which supports a first toner layer containing at least a clear toner [X] onto a first surface of a recording material, while allowing the first toner layer to be closely adhered to a gloss processing belt; and cooling the same. The second gloss processing includes heating and pressing a processed body which supports a second toner layer containing at least a clear toner [Y] onto a second surface of the recording material, while allowing the second toner layer to be closely adhered to the gloss processing belt; and cooling the same. Here, a storage elastic modulus G? X (150) at 150° C. of the clear toner [X] is lower than a storage elastic modulus G? Y (150) at 150° C. of the clear toner [Y].Type: ApplicationFiled: February 1, 2013Publication date: August 8, 2013Inventors: Aya SHIRAI, Asao MATSUSHIMA, Yoshiyasu MATSUMOTO, Ryuichi HIRAMOTO, Taiki AMEMIYA, Tatsuya NAGASE
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Patent number: 8497059Abstract: A method of producing a toner comprising toner particles containing a binder resin composed of a non-crystalline polyester resin having a crosslinked structure and a crystalline polyester resin is disclosed, the method comparing steps of; a process to form an oil phase liquid by dissolving or dispersing a non-crystalline polyester resin having a polymerizable unsaturated double bond and a crystalline polyester resin in an organic solvent, a process to form an aqueous dispersion liquid of oil droplets of the oil phase liquid by dispersing the oil phase liquid in an aqueous medium, a process to form oil droplets containing the non-crystalline polyester resin having a crosslinked structure by adding a radical polymerization initiator to the aqueous dispersion liquid of oil droplets, and an organic solvent removing process to form toner particles by removing organic solvent.Type: GrantFiled: September 8, 2011Date of Patent: July 30, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Tomomi Oshiba, Mikihiko Sukeno, Hajime Tadokoro, Ken Ohmura, Tatsuya Nagase, Kenji Hayashi, Saburou Hiraoka, Tomoko Mine
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Patent number: 8475991Abstract: A transparent toner for forming a glossy surface is disclosed, wherein a critical surface tension of a glossy surface formed by the transparent toner at 20° C. is at least 50 mN/m, and the transparent toner comprises a resin composed of a polymer formed by employing at least a polymerizable monomer containing a carboxylic group (—COOH). An image forming method employing the transparent tone is also disclosed.Type: GrantFiled: November 18, 2010Date of Patent: July 2, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Michiyo Fujita, Tatsuya Nagase, Asao Matsushima, Yasuko Uchino, Aya Shirai, Ryuichi Hiramoto
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Patent number: 8431310Abstract: A color particle is disclosed, comprising a color-exhibitive piece which comprises microparticles for structural color and a matrix and is dispersed in a binder resin, wherein the color particle meets the following requirement: 1.5?A/B?5.0 wherein A is a major axis diameter of the color particle and B is a minor axis diameter of the color particle; and an angle of a longitudinal direction of the color-exhibitive piece to a major axis direction of the color particle falls within a range of ±20 degrees.Type: GrantFiled: April 12, 2010Date of Patent: April 30, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Aya Shirai, Tatsuya Nagase, Motoi Nishimura
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Patent number: 8349532Abstract: Provided is a toner for an electrostatic charge image development having toner particles which contain: a binder resin; a colorant; and a compound represented by Formula (1) in an amount of 0.1 to 65 ppm based on the total weight of the toner particles: wherein R1 and R2 each respectively represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an aryl group.Type: GrantFiled: February 1, 2012Date of Patent: January 8, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Natsuko Kusaka, Naohiro Hirose, Tatsuya Nagase, Hiroyuki Yasukawa
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Publication number: 20130004890Abstract: A toner used for electrostatic latent image development which is excellent in fixing separability with maintaining sufficient low temperature fixability even in a high-speed machine and is also superior in crashing resistance, comprising toner particles, each comprising a core particle and a shell layer provided on the surface of the core particle, wherein the core particle comprises a binder resin containing a styrene-acrylic resin and a first styrene-acrylic modified polyester, and the shell comprises a second styrene-acrylic modified polyester resin.Type: ApplicationFiled: June 20, 2012Publication date: January 3, 2013Applicant: Konica Minolta Business Technologies, Inc.Inventors: Shinya OBARA, Tatsuya NAGASE, Noboru UEDA, Junya ONISHI, Tatsuya FUJISAKI, Kenshi MIYAJIMA
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Publication number: 20120328980Abstract: The toner for electrostatic image development has excellent charge properties, by which excellent toner particle size-controlling ability is achieved, and moreover the sharpening of a particle size distribution is achieved. The toner is composed of toner particles containing a binder resin. The process has an aggregating step of adding an aggregating agent containing a transition element into an aqueous medium of dispersed fine binder resin particles to aggregate the fine binder resin particles, and an aggregation-stopping step of adding an aggregation stopper composed on a sulfur atom-containing compound exhibiting a reducing action on the aggregating agent. The aggregating agent is a salt of a bivalent or higher metal selected from Sr, Ti, V, Cr, Mn, Fe, Co, Ni and Cu.Type: ApplicationFiled: June 18, 2012Publication date: December 27, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Saburou HIRAOKA, Tomomi OSHIBA, Mikihiko SUKENO, Tomoko MINE, Hitomi MOTANI, Tatsuya NAGASE, Ken OHMURA
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Publication number: 20120270149Abstract: Disclosed is a production process of a toner for electrostatic image development, by which excellent toner particle size-controlling ability and moreover the sharpening of a particle size distribution are achieved. The production process is a production process of a toner for electrostatic image development, which is composed of toner particles containing at least a binder resin. The process has an aggregating and fusion-bonding step of adding a aggregating agent containing polysilicato-iron into an aqueous medium in which fine binder resin particles formed of the binder resin have been dispersed, thereby aggregating the fine binder resin particles, and an aggregation stopper-adding step of adding an aggregation stopper composed of a polyvalent organic acid or a salt thereof. In the production process of the toner for electrostatic image development, the polyvalent organic acid or the salt thereof is preferably an amino acid or a salt thereof.Type: ApplicationFiled: April 18, 2012Publication date: October 25, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Tomoko MINE, Saburou HIRAOKA, Tomomi OSHIBA, Tatsuya NAGASE
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Publication number: 20120264050Abstract: Disclosed is a production process of a toner for electrostatic image development, by which excellent toner particle size-controlling ability is achieved, and moreover the sharpening of a particle size distribution is achieved. The production process is a production process of a toner for electrostatic image development, is composed of toner particles containing a binder resin. The process has the steps of adding a aggregating agent containing polysilicato-iron into an aqueous medium in which fine binder resin particles formed of the binder resin have been dispersed, thereby aggregating the fine binder resin particles, and adding an aggregation stopper composed of a salt whose cation is univalent or bivalent.Type: ApplicationFiled: April 12, 2012Publication date: October 18, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Tomomi OSHIBA, Hitomi MOTANI, Tomoko MINE, Saburou HIRAOKA, Mikihiko SUKENO, Tatsuya NAGASE, Ken OHMURA
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Publication number: 20120264045Abstract: A foil transferring method employing an electrophotography is disclosed, in which a toner used for forming a foil transferring layer contains at least a vinyl based resin and a polyester based resin as a binder resin and an amount of the vinyl based resin is 50 to 95% by weight based on the total amount of the binder resin.Type: ApplicationFiled: April 4, 2012Publication date: October 18, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC,.Inventors: Asao MATSUSHIMA, Tatsuya NAGASE, Yasuko UCHINO, Aya SHIRAI, Ryuichi HIRAMOTO, Michiyo FUJITA
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Publication number: 20120251174Abstract: Provided is a method for forming an image containing the sequential steps of: forming a foil adhesion toner image on an image supporting substrate with a foil adhesion toner (?) which comprises at least a binder resin containing a thermoplastic resin using an electrophotographic method; forming a foil image on the foil adhesion toner image by contacting a transfer foil on the foil adhesion toner image with applying heat; and forming a visible toner image on the image supporting substrate which has been formed with the foil image with at least one image forming toner (?) using an electrophotographic method, followed by fixing the visible toner image by applying heat and pressure thereto, wherein ?(Tsp(?)?Tsp(?)) is 5 to 50° C., provided that Tsp (?) is a softening point of the foil adhesion toner (?) and Tsp (?) is a softening point of the image forming toner (?).Type: ApplicationFiled: March 22, 2012Publication date: October 4, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Aya SHIRAI, Tatsuya NAGASE, Asao MATSUSHIMA, Yasuko UCHINO, Ryuichi HIRAMOTO, Michiyo FUJITA
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Publication number: 20120236344Abstract: A disclosed image processing system including plural image processing apparatuses connected by a network and an image printing part outputting a print by printing based on image information to be printed with a first image processing apparatus; an image reading part reading an image of the print and generating read image information with a second image processing apparatus; a correction information generating part generating a correction requirement for a print function of the first image processing apparatus and correction information containing a correction content based on read image characteristic information indicative of characteristics of the read image information, print image characteristic information indicating the image information to be printed, or the read image characteristic information and the print image characteristic information; and a correction executing part carrying out a correction for the print function based on the correction information in the first image processing apparatus.Type: ApplicationFiled: September 14, 2011Publication date: September 20, 2012Applicant: RICOH COMPANY, LTD.Inventors: Tatsuya NAGASE, Takahiro YAGISHITA, Tadashi HONDA, Junichi HARA, Junichi YAMAGATA, Taeko ISHIZU
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Publication number: 20120225379Abstract: A two-component developer is disclosed, composing a toner comprising parent toner particles with an attached external additive and a carrier provided with a resin covering layer on a surface of a core particle, wherein the resin covering layer comprises a binder resin comprising an acrylic resin and when the resin covering layer is divided in half to a core particle side and a surface side, a nitrogen element content of the core particle side is larger than a nitrogen element content of the surface side.Type: ApplicationFiled: February 28, 2012Publication date: September 6, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Tomoko MINE, Mikihiko SUKENO, Tatsuya NAGASE, Tomomi OSHIBA, Hiroyuki KOZURU, Saburou HIRAOKA, Yoshiyasu MATSUMOTO, Kosuke NAKAMURA, Hitomi MOTANI, Takanari KAYAMORI
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Publication number: 20120177417Abstract: Provided is an image forming method in which a foil image exhibiting excellent finish without any wrinkle and strong adhesive strength is formed on a foil transferring face made of toner. The image forming method for transferring the transfer foil on the foil transferring face is conducted by contacting the transfer foil to the foil transferring face formed by using toner having a glass transition temperature of not more than 60° C., and by passing through a nip portion formed between a driving roller and a follower roller.Type: ApplicationFiled: December 28, 2011Publication date: July 12, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Michiyo FUJITA, Tatsuya NAGASE, Asao MATSUSHIMA, Yasuko UCHINO, Aya SHIRAI, Ryuichi HIRAMOTO