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Patent Agency Ranking
公开(公告)号：US20150099223A1
公开(公告)日：2015-04-09
申请号：US14504827
申请日：2014-10-02
Applicant: Konica Minolta, Inc.
Inventor： Tokyo OSHIBA , Ken OHMURA , Kaori MATSUSHIMA , Noboru UEDA , Ito KOGA , Noriyuki KIMPARA
CPC classification number: G03G9/08755 , C08G63/16 , C08L67/02 , G03G9/08795 , G03G9/08797 , C08L9/02
Abstract: 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.
Abstract translation: 提供一种用于显影具有优异的低温定影性和耐热储存性的静电图像的调色剂。 为了实现上述目的中的至少一个目的，提供了一种用于显影静电图像的调色剂，其含有由二羧酸单元和二醇单元组成的结晶性聚酯树脂的第一树脂（重均分子量为5000〜100000） ; 作为由二羧酸单元和二元醇单元构成的结晶性链段（重均分子量为200〜3000）的聚酯树脂和重均分子量为5000〜60000的第二树脂（重均分子量为5000〜60000） ，其中在每个单元之间存在特定的碳数关系。
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公开(公告)号：US20170090324A1
公开(公告)日：2017-03-30
申请号：US15267808
申请日：2016-09-16
Applicant: Konica Minolta, Inc.
Inventor： Futoshi KADONOME , Satoshi UCHINO , Shinya OBARA , Noriyuki KIMPARA , Ikuko SAKURADA , Takuya TAKAHASHI
CPC classification number: G03G9/09783 , G03G9/0819 , G03G9/08711 , G03G9/08755 , G03G9/0918 , G03G9/09716 , G03G9/09725 , G03G9/113 , G03G9/1133
Abstract: 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 Ω·cm in primary particles.
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公开(公告)号：US20190302667A1
公开(公告)日：2019-10-03
申请号：US16290550
申请日：2019-03-01
Applicant: Konica Minolta Inc.
Inventor： Noriyuki KIMPARA
IPC: G03G15/00
Abstract: 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.
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公开(公告)号：US20170123332A1
公开(公告)日：2017-05-04
申请号：US15274304
申请日：2016-09-23
Applicant: Konica Minolta, Inc.
Inventor： Satoshi UCHINO , Shinya OBARA , Futoshi KADONOME , Noriyuki KIMPARA , Ikuko SAKURADA , Takuya TAKAHASHI
CPC classification number: G03G9/0827 , G03G9/0819 , G03G9/08711 , G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/0918 , G03G9/09716 , G03G9/09725 , G03G9/09791
Abstract: 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 μm.
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公开(公告)号：US20170123334A1
公开(公告)日：2017-05-04
申请号：US15282177
申请日：2016-09-30
Applicant: Konica Minolta, Inc.
Inventor： Noriyuki KIMPARA , Satoshi UCHINO , Shinya OBARA , Futoshi KADONOME , Ikuko SAKURADA , Takuya TAKAHASHI
CPC classification number: G03G9/08755 , G03G9/0819 , G03G9/08788 , G03G9/08797 , G03G9/09791
Abstract: 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 μm≦Db≦2.0 μm Expression (1) 0.1 Db/Da≦0.5. Expression (2)
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