Patents by Inventor Noriyuki Kimpara
Noriyuki Kimpara 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: 10585380Abstract: An image forming apparatus that forms an image on a sheet under an operation condition set depending on a sheet type, includes a hardware processor that: detects whether the sheet type is any one of a plurality of assumed types; performs control such that an activation operation for forming the image under an interim condition, which is an operation condition corresponding to one of the plurality of assumed types, is performed before detecting the sheet type; determines whether or not a recovery operation for optimizing a state of image formation is performed before starting image formation under a determinate condition, which is an operation condition corresponding to the detected type; performs control such that the recovery operation is performed when it is determined that the recovery operation is performed; and performs control such that the image formation is performed under the determinate condition after the recovery operation is performed.Type: GrantFiled: March 1, 2019Date of Patent: March 10, 2020Assignee: Konica Minolta Inc.Inventor: Noriyuki Kimpara
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Publication number: 20190302667Abstract: An image forming apparatus that forms an image on a sheet under an operation condition set depending on a sheet type, includes a hardware processor that: detects whether the sheet type is any one of a plurality of assumed types; performs control such that an activation operation for forming the image under an interim condition, which is an operation condition corresponding to one of the plurality of assumed types, is performed before detecting the sheet type; determines whether or not a recovery operation for optimizing a state of image formation is performed before starting image formation under a determinate condition, which is an operation condition corresponding to the detected type; performs control such that the recovery operation is performed when it is determined that the recovery operation is performed; and performs control such that the image formation is performed under the determinate condition after the recovery operation is performed.Type: ApplicationFiled: March 1, 2019Publication date: October 3, 2019Inventor: Noriyuki KIMPARA
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Patent number: 9915884Abstract: The toner of the present invention contains: a toner base particle, and a silica particle and a fatty acid metal salt particle adhering to a surface of the toner base particle. The toner base particle contains a crystalline polyester resin and an amorphous polyester resin. The toner particle has an average circularity of 0.945 to 0.965. The silica particle has a volume average particle size of 70 to 300 nm, and has an average circularity of 0.5 to 0.9. The fatty acid metal salt particle has a median diameter based on a volume of 0.50 to 2.00 ?m.Type: GrantFiled: September 23, 2016Date of Patent: March 13, 2018Assignee: KONICA MINOLTA, INC.Inventors: Satoshi Uchino, Shinya Obara, Futoshi Kadonome, Noriyuki Kimpara, Ikuko Sakurada, Takuya Takahashi
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Patent number: 9904194Abstract: An electrostatic latent image developing toner of the present invention includes toner base particles and particles containing a fatty acid metal salt. The toner base particles contain a crystalline resin containing a segment of a first resin and a segment of a second resin chemically bonded to each other and an amorphous resin containing at least the second resin. The crystalline resin is a hybrid crystalline polyester resin. The first resin is a crystalline polyester resin. The second resin is an amorphous resin. The volume-based median diameter (Da) of the toner base particles and the volume-based median diameter (Db) of the particles containing the fatty acid metal salt satisfy the relations represented by Expressions (1) and (2) below: 0.5 ?m?Db?2.0 ?m??Expression (1) 0.1 Db/Da?0.5.Type: GrantFiled: September 30, 2016Date of Patent: February 27, 2018Assignee: KONICA MINOLTA, INC.Inventors: Noriyuki Kimpara, Satoshi Uchino, Shinya Obara, Futoshi Kadonome, Ikuko Sakurada, Takuya Takahashi
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Patent number: 9823596Abstract: Provided is an electrostatic image developing toner including a toner mother particle containing a colorant and a binder resin comprising a crystalline resin and an amorphous resin; and an external additive. The external additive includes an inorganic fine particle having a number average major axis in a range of 50 to 100 nm, an average aspect ratio in a range of 3 to 10, and a volume resistivity in a range of 1×1010 to 1×1012 ?·cm in primary particles.Type: GrantFiled: September 16, 2016Date of Patent: November 21, 2017Assignee: KONICA MINOLTA, INC.Inventors: Futoshi Kadonome, Satoshi Uchino, Shinya Obara, Noriyuki Kimpara, Ikuko Sakurada, Takuya Takahashi
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Patent number: 9703218Abstract: A toner for developing electrostatic images contains a first resin and a second resin. The first resin is a crystalline polyester resin composed of a dicarboxylic acid unit and a dialcohol unit. The first resin has a weight average molecular weight of 5000 to 100000. The second resin has a weight average molecular weight of 5000 to 60000. The second resin is a polyester resin composed of a crystalline segment and an amorphous segment. The crystalline segment has a weight average molecular weight of 200 to 3000 and is composed of a dicarboxylic acid unit and a dialcohol unit. In the toner, a specific carbon number relationship is present between each unit.Type: GrantFiled: October 2, 2014Date of Patent: July 11, 2017Assignee: KONICA MINOLTA, INC.Inventors: Tomomi Oshiba, Ken Ohmura, Kaori Matsushima, Noboru Ueda, Ito Koga, Noriyuki Kimpara
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Publication number: 20170123334Abstract: An electrostatic latent image developing toner of the present invention includes toner base particles and particles containing a fatty acid metal salt. The toner base particles contain a crystalline resin containing a segment of a first resin and a segment of a second resin chemically bonded to each other and an amorphous resin containing at least the second resin. The crystalline resin is a hybrid crystalline polyester resin. The first resin is a crystalline polyester resin. The second resin is an amorphous resin. The volume-based median diameter (Da) of the toner base particles and the volume-based median diameter (Db) of the particles containing the fatty acid metal salt satisfy the relations represented by Expressions (1) and (2) below: 0.5 ?m?Db?2.0 ?m??Expression (1) 0.1 Db/Da?0.5.Type: ApplicationFiled: September 30, 2016Publication date: May 4, 2017Inventors: Noriyuki KIMPARA, Satoshi UCHINO, Shinya OBARA, Futoshi KADONOME, Ikuko SAKURADA, Takuya TAKAHASHI
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Publication number: 20170123332Abstract: The toner of the present invention contains: a toner base particle, and a silica particle and a fatty acid metal salt particle adhering to a surface of the toner base particle. The toner base particle contains a crystalline polyester resin and an amorphous polyester resin. The toner particle has an average circularity of 0.945 to 0.965. The silica particle has a volume average particle size of 70 to 300 nm, and has an average circularity of 0.5 to 0.9. The fatty acid metal salt particle has a median diameter based on a volume of 0.50 to 2.00 ?m.Type: ApplicationFiled: September 23, 2016Publication date: May 4, 2017Inventors: Satoshi UCHINO, Shinya OBARA, Futoshi KADONOME, Noriyuki KIMPARA, Ikuko SAKURADA, Takuya TAKAHASHI
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Publication number: 20170090324Abstract: Provided is an electrostatic image developing toner including a toner mother particle containing a colorant and a binder resin comprising a crystalline resin and an amorphous resin; and an external additive. The external additive includes an inorganic fine particle having a number average major axis in a range of 50 to 100 nm, an average aspect ratio in a range of 3 to 10, and a volume resistivity in a range of 1×1010 to 1×1012 ?·cm in primary particles.Type: ApplicationFiled: September 16, 2016Publication date: March 30, 2017Inventors: Futoshi KADONOME, Satoshi UCHINO, Shinya OBARA, Noriyuki KIMPARA, Ikuko SAKURADA, Takuya TAKAHASHI
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Patent number: 9017911Abstract: In the present invention, provided is an electrophotographic toner in which low temperature fixing is achieved, and high storage stability is obtained without generating tacking with respect to fixed images to be formed. It is a feature that this electrophotographic toner possesses at least a binder resin, a colorant and a releasing agent, wherein the releasing agent comprises an ester compound and an aliphatic hydroxycarboxylic acid compound.Type: GrantFiled: June 26, 2009Date of Patent: April 28, 2015Assignee: Konica Minolta Business Technologies, Inc.Inventors: Mikio Kouyama, Yasuhiko Muramatsu, Kenji Hayashi, Hiroaki Obata, Noriyuki Kimpara, Hiroshi Nagasawa
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Publication number: 20150099223Abstract: Provided is a toner for developing electrostatic images having excellent low temperature fixability and heat resistance storability. In order to achieve at least one of the aforementioned purposes, provided is a toner for developing electrostatic images containing a first resin which is a crystalline polyester resin consisting of a dicarboxylic acid unit and a dialcohol unit (weight average molecular weight is 5000 to 100000); a second resin (weight average molecular weight is 5000 to 60000) which is a polyester resin consisting of a crystalline segment (weight average molecular weight is 200 to 3000), which consists of a dicarboxylic acid unit and a dialcohol unit, and an amorphous segment, in which a specific carbon number relationship is present between each unit.Type: ApplicationFiled: October 2, 2014Publication date: April 9, 2015Inventors: Tokyo OSHIBA, Ken OHMURA, Kaori MATSUSHIMA, Noboru UEDA, Ito KOGA, Noriyuki KIMPARA
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Patent number: 8557492Abstract: In the present invention, provided is a toner suitable for fixing at low temperature, which exhibits excellent performance against thermal stress as well as mechanical stress with no generation of blocking even during storage for a long duration in an unused state, and also with no generation of tacking of toner images after fixing. Also disclosed is a toner comprising at least a binder resin, a colorant and a wax, the toner comprising a fatty acid ester wax comprising a hydroxyl group, and an aliphatic alcohol.Type: GrantFiled: September 11, 2009Date of Patent: October 15, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Kenji Hayashi, Mikio Kouyama, Hiroaki Obata, Noriyuki Kimpara, Hiroshi Nagasawa
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Patent number: 8283098Abstract: A preparation method of a toner comprising a binder resin and a colorant is disclosed, comprising forming resin particles containing a resin formed by allowing a styrene monomer, a (meth)acryl monomer and a polymer represented by the formula (1) to react, and mixing the resin particles with colorant particles which were dispersed and allowing the resin particles and the colorant particle to coagulate and fuse to form toner particles, X—(Y)n—X??formula (1) wherein X is at least one of an acryloyl group and a methacryloyl group, Y is a radical polymerizable monomer unit and n is an integer of 25 to 1000.Type: GrantFiled: October 26, 2009Date of Patent: October 9, 2012Assignee: Konica Minolta Business Technologies, Inc.Inventors: Mikio Kouyama, Kenji Hayashi, Hiroaki Obata, Noriyuki Kimpara, Hiroshi Nagasawa
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Publication number: 20110123917Abstract: In the present invention, provided is a toner suitable for fixing at low temperature, which exhibits excellent performance against thermal stress as well as mechanical stress with no generation of blocking even during storage for a long duration in an unused state, and also with no generation of tacking of toner images after fixing. Also disclosed is a toner comprising at least a binder resin, a colorant and a wax, the toner comprising a fatty acid ester wax comprising a hydroxyl group, and an aliphatic alcohol.Type: ApplicationFiled: September 11, 2009Publication date: May 26, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Kenji Hayashi, Mikio Kouyama, Hiroaki Obata, Noriyuki Kimpara, Hiroshi Nagasawa
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Publication number: 20110033795Abstract: A toner which can be improved in both low-temperature fixability and offset resistance is disclosed, comprising a colorant and a binder resin containing a polyester ionomer resin which has been reacted with a polyvalent isocyanate compound.Type: ApplicationFiled: July 22, 2009Publication date: February 10, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Mikio Kouyama, Kenji Hayashi, Hiroaki OBata, Noriyuki Kimpara, Hiroshi Nagasawa
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Publication number: 20110008721Abstract: In the present invention, provided is an eleetrophotographic toner in which low temperature fixing is achieved, and high storage stability is obtained without generating tacking with respect to fixed images to be formed. It is a feature that this electrophotogaphic toner possesses at least a binder resin, a colorant and a releasing agent, wherein the releasing agent comprises an ester compound and an aliphatic hydroxycarboxylic acid compound.Type: ApplicationFiled: June 26, 2009Publication date: January 13, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Mikio Kouyama, Yasuhiko Muramatsu, Kenji Hayashi, Hiroaki Obata, Noriyuki Kimpara, Hiroshi Nagasawa
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Publication number: 20100112473Abstract: A preparation method of a toner comprising a binder resin and a colorant is disclosed, comprising forming resin particles containing a resin formed by allowing a styrene monomer, a (meth)acryl monomer and a polymer represented by the formula (1) to react, and mixing the resin particles with colorant particles which were dispersed and allowing the resin particles and the colorant particle to coagulate and fuse to form toner particles, X—(Y)n—X??formula (1) wherein X is at least one of an acryloyl group and a methacryloyl group, Y is a radical polymerizable monomer unit and n is an integer of 25 to 1000.Type: ApplicationFiled: October 26, 2009Publication date: May 6, 2010Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Mikio KOUYAMA, Kenji HAYASHI, Hiroaki OBATA, Noriyuki KIMPARA, Hiroshi NAGASAWA