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Yusuke Hasegawa patents

Recent patents with Yusuke Hasegawa listed as an inventor - additional entries may be under other spellings.


Yusuke Hasegawa - Related organizations: Canon Kabushiki Kaisha patents

Magnetic toner, image forming apparatus, and image forming method

12/29/16 - 20160378003 - Provided is a toner having improved durability. The magnetic toner includes magnetic toner particles each containing a binder resin and a magnetic material, in which a deformation amount when a load of 9.8×10−4 N is applied to one particle of the magnetic toner in a microcompression test is 3.0 μm
Inventors: Satoshi Arimura, Yusuke Hasegawa, Tomohisa Sano, Yoshitaka Suzumura, Kozue Uratani, Yuujirou Nagashima

Magnetic toner

11/24/16 - 20160342100 - when a coverage ratio A (%) is a coverage ratio of the magnetic toner particle's surface by the inorganic fine particles and a coverage ratio B (%) is a coverage ratio of the magnetic toner particles' surface by the inorganic fine particles that are fixed to the magnetic toner particle's
Inventors: Michihisa Magome, Tadashi Dojo, Yusuke Hasegawa

Magnetic toner

11/17/16 - 20160334723 - A magnetic toner including: magnetic toner particles containing a binder resin, a magnetic body, and a release agent; and inorganic fine particles present on the surface of the magnetic toner particles, wherein the inorganic fine particles present on the surface of the magnetic toner particles contain metal oxide fine particles,
Inventors: Kozue Uratani, Michihisa Magome, Yusuke Hasegawa, Shuichi Hiroko

Magnetic toner

11/10/16 - 20160327881 - A magnetic toner contains magnetic toner particles containing a binder resin, a release agent, and a magnetic body, and inorganic fine particles present on the surface of the magnetic toner particles, wherein a ratio of coverage of the magnetic toner particles' surface by the inorganic fine particles is in a
Inventors: Shuichi Hiroko, Michihisa Magome, Yusuke Hasegawa, Yoshitaka Suzumura

Toner

09/15/16 - 20160266509 - The toner has a toner particle that contains a binder resin, a colorant, a release agent, and a crystalline polyester, wherein the release agent contains an ester wax, and the peak top temperature of the maximum endothermic peak of the ester wax as measured with a differential scanning calorimeter is
Inventors: Tomohisa Sano, Yusuke Hasegawa, Yoshitaka Suzumura, Yuujirou Nagashima, Kozue Uratani

Magnetic toner

08/13/15 - 20150227068 - The magnetic toner contains a magnetic toner particle having a binder resin and a magnetic body, and inorganic fine particles, wherein the average circularity of the magnetic toner is at least 0.955 and, when classifying the inorganic fine particles, in accordance with the fixing strength thereof to the magnetic toner
Inventors: Tomohisa Sano, Yusuke Hasegawa, Shuichi Hiroko, Yoshitaka Suzumura, Keisuke Tanaka

Magnetic toner

08/13/15 - 20150227067 - A magnetic toner containing a magnetic toner particle having a binder resin and a magnetic body, and inorganic fine particles, wherein when the inorganic fine particles are classified as first inorganic fine particles, second inorganic fine particles, and third inorganic fine particles in accordance with fixing strength thereof to the
Inventors: Yusuke Hasegawa, Tomohisa Sano, Shuichi Hiroko, Yoshitaka Suzumura, Keisuke Tanaka

Toner

06/18/15 - 20150168859 - wherein X2 denotes the theoretical coverage of the magnetic toner surface by the silica fine particles.
Inventors: Takashi Matsui, Yusuke Hasegawa, Shuichi Hiroko, Yoshitaka Suzumura, Atsuhiko Ohmori, Keisuke Tanaka

Toner

12/25/14 - 20140377696 - A toner comprising toner particles which comprise a binder resin and a colorant, and also inorganic fine particles as external additives, wherein the inorganic fine particles are silica fine particles and a group 2 element titanate fine particles, the inorganic fine particles have specific particle diameters, the silica fine particles
Inventors: Yusuke Hasegawa, Takashi Matsui, Shuichi Hiroko, Yoshitaka Suzumura, Atsuhiko Ohmori, Keisuke Tanaka

Magnetic toner

12/18/14 - 20140370431 - A magnetic toner contains magnetic toner particles containing a binder resin, a release agent, and a magnetic body, and inorganic fine particles present on the surface of the magnetic toner particles, wherein a ratio of coverage of the magnetic toner particles' surface by the inorganic fine particles is in a
Inventors: Shuichi Hiroko, Michihisa Magome, Yusuke Hasegawa, Yoshitaka Suzumura

Magnetic toner

11/20/14 - 20140342278 - A magnetic toner includes: magnetic toner particles containing a binder resin and a magnetic body; and inorganic fine particles that are present on the surface of the magnetic toner particles and are not a magnetic iron oxide and magnetic iron oxide particles that are present on the surface of the
Inventors: Tomohisa Sano, Michihisa Magome, Yusuke Hasegawa, Atsuhiko Ohmori

Magnetic toner

11/20/14 - 20140342277 - The magnetic toner contains: magnetic toner particles containing a binder resin and a magnetic body; and inorganic fine particles present on the surface of the magnetic toner particles, wherein the inorganic fine particles present on the surface of the magnetic toner particles comprise strontium titanate fine particles and metal oxide
Inventors: Atsuhiko Ohmori, Michihisa Magome, Yusuke Hasegawa, Keisuke Tanaka

Magnetic toner

11/13/14 - 20140335450 - A magnetic toner is provided that exhibits an excellent electrostatic offset resistance both initially and after long-term use. The magnetic toner contains: magnetic toner particles containing a binder resin and a magnetic body; and inorganic fine particles present on the surface of the magnetic toner particles, wherein the inorganic fine
Inventors: Shotaro Nomura, Michihisa Magome, Yusuke Hasegawa, Takashi Matsui

Magnetic toner

11/13/14 - 20140335449 - A magnetic toner including: magnetic toner particles containing a binder resin, a magnetic body, and a release agent; and inorganic fine particles present on the surface of the magnetic toner particles, wherein the inorganic fine particles present on the surface of the magnetic toner particles contain metal oxide fine particles,
Inventors: Kozue Uratani, Michihisa Magome, Yusuke Hasegawa, Shuichi Hiroko

Magnetic toner

10/30/14 - 20140322640 - A magnetic toner containing: magnetic toner particles containing a binder resin and a magnetic body; and inorganic fine particles present on the surface of the magnetic toner particles, wherein the inorganic fine particles present on the surface of the magnetic toner particles contain silica fine particles and alumina fine particles
Inventors: Keisuke Tanaka, Michihisa Magome, Yusuke Hasegawa, Tomohisa Sano

Magnetic toner

10/30/14 - 20140322639 - A magnetic toner contains magnetic toner particles containing a binder resin, a release agent, and a magnetic body and inorganic fine particles present on the surface of the magnetic toner particles, wherein the inorganic fine particles present on the surface of the magnetic toner particles contain metal oxide fine particles,
Inventors: Yoshitaka Suzumura, Yusuke Hasegawa, Michihisa Magome, Kozue Uratani

Magnetic toner

10/23/14 - 20140315126 - when a coverage ratio A (%) is a coverage ratio of the magnetic toner particle's surface by the inorganic fine particles and a coverage ratio B (%) is a coverage ratio of the magnetic toner particle' surface by the inorganic fine particles that are fixed to the magnetic toner particle's
Inventors: Michihisa Magome, Tadashi Dojo, Yusuke Hasegawa

Magnetic toner

10/23/14 - 20140315125 - The magnetic toner contains magnetic toner particles containing a binder resin and a magnetic body, and inorganic fine particles present on the surface of the magnetic toner particles, wherein the inorganic fine particles present on the surface of the magnetic toner particles comprise metal oxide fine particles, wherein the metal
Inventors: Takashi Matsui, Yusuke Hasegawa, Shotaro Nomura, Michihisa Magome

Magnetic toner

10/09/14 - 20140302433 - A magnetic toner contains magnetic toner particles containing a binder resin and a magnetic body, and inorganic fine particles present on the surface of the magnetic toner particles, wherein the inorganic fine particles present on the surface of the magnetic toner particles contain metal oxide fine particles, the metal oxide
Inventors: Yusuke Hasegawa, Tadashi Dojo, Michihisa Magome

Toner

01/30/14 - 20140030645 - Disclosed is a toner which enables a stable image density to be obtained, regardless of the service environment, throughout use in durability tests, and which is able to suppress the occurrence of faulty cleaning. The toner contains both toner particles, which include a binder resin and a colorant, and also
Inventors: Shotaro Nomura, Yusuke Hasegawa, Takashi Matsui, Shuichi Hiroko, Yoshitaka Suzumura, Atsuhiko Ohmori

Developing apparatus, developing method and magnetic toner for developing apparatus

06/27/13 - 20130164044 - The present invention relates to a developing apparatus wherein a magnetic toner-carrying member has a work function value at the surface within a specific range, a toner regulating member which regulates toner carried on the magnetic toner-carrying member is formed by a specific material at a portion contacting the magnetic
Inventors: Yusuke Hasegawa, Yoshitaka Suzumura, Kozue Uratani

Magnetic toner

09/13/12 - 20120231384 - A magnetic toner which has superior charging stability and charging uniformity, maintains stable developing performance without any dependence on service environments and may less cause any decrease in image density and any image defects such as fog and ghost, the magnetic toner has magnetic toner particles, each of the magnetic
Inventors: Kozue Aoki, Yusuke Hasegawa, Yoshitaka Suzumura

Toner

12/22/11 - 20110311910 - (3) a value of Mn(135° C.)/Mn(25° C.) of from 25 or more to 50 or less which is the ratio of number-average molecular weight Mn(135° C.) in measuring an o-dichlorobenzene-soluble matter at 135° C. of the toner by SEC-MALLS to number-average molecular weight Mn(25° C.) in measuring a tetrahydrofuran-soluble matter
Inventors: Takashi Matsui, Michihisa Magome, Yusuke Hasegawa, Tomohisa Sano, Shuichi Hiroko, Yoshitaka Suzumura, Shotaro Nomura, Atsuhiko Ohmori

Toner

02/04/10 - 20100028793 - An object of the present invention is to provide a toner excellent in ability to prevent electrostatic offset and fixation tailing. Provided is a toner including toner particles each containing at least a binder resin, a wax, and a magnetic iron oxide, and inorganic fine particles, in which the magnetic
Inventors: Yusuke Hasegawa, Yoshihiro Ogawa, Kouji Nishikawa, Kentarou Kamae, Takashige Kasuya

Hydrophobic inorganic fine particles and toner

01/14/10 - 20100009277 - Hydrophobic inorganic fine particles are provided which: does not cause melt adhesion of toner to a photosensitive member and contamination of a contact charging member; imparts excellent flowability, charging performance and durability to toner even after the toner is stored in a high-temperature, high-humidity environment over a long time period;
Inventors: Yoshihiro Ogawa, Yusuke Hasegawa, Kouji Nishikawa, Miho Okazaki, Yoshitaka Suzumura, Takashige Kasuya

Toner

08/06/09 - 20090197193 - To provide a toner which has superior low-temperature fixing performance, high-temperature anti-offsetting properties and developing performance and may cause neither melt sticking of toner to photosensitive member nor turn-up of cleaning blade. The toner contains at least a binder resin, a colorant and a wax, and the wax is characterized
Inventors: Yoshihiro Ogawa, Yusuke Hasegawa, Kouji Nishikawa, Miho Okazaki, Takashige Kasuya

Magnetic toner

07/23/09 - 20090186288 - The object of the present invention is to provide a magnetic toner enabling an image with high image density and excellent image reproducibility to be obtained, which is excellent in fluidity, charging stability, and charging uniformity, even for long-term use, and also enabling an image whose fogging, ghost, and scattering
Inventors: Junko Hirata, Yoshihiro Ogawa, Yusuke Hasegawa, Kouji Nishikawa, Miho Okazaki, Takashige Kasuya


### Yusuke Hasegawa patent invention listings

The bibliographic references displayed about Yusuke Hasegawa's patents are for a recent sample of Yusuke Hasegawa's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Yusuke Hasegawa filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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