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公开(公告)号：US20200379364A1
公开(公告)日：2020-12-03
申请号：US16884798
申请日：2020-05-27
申请人： Konica Minolta, Inc.
发明人： Noboru UEDA , Aya SHIRAI , Takaki KAWAMURA , Natsuki ITO , Yusuke TAKIGAURA , Ami MOTOHASHI
摘要： Provided is an electrostatic latent image developing toner capable of preventing a release agent from adhering to a member such as a paper conveying roller or the like.An electrostatic latent image developing toner contains at least a binder resin, a colorant, and a release agent, wherein the release agent contains at least an ester wax and the ester wax is an ester wax having a total carbon number of 45 or more and 71 or less, and a top temperature of an exothermic peak during cooling of the electrostatic latent image developing toner measured by a differential scanning calorimetry is within a range of 60° C. or higher and 85° C. or lower.
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公开(公告)号：US20220004113A1
公开(公告)日：2022-01-06
申请号：US17340471
申请日：2021-06-07
申请人： Konica Minolta, Inc.
发明人： Hiroshi NAGASAWA , Yusuke TAKIGAURA , Takaki KAWAMURA , Ami MOTOHASHI , Natsuki ITO , Shiro HIRANO
摘要： A toner set includes a plurality of toners, wherein the toner set includes a first toner containing a yellow colorant and a second toner containing a cyan colorant, the first toner and the second toner each contain a binder resin containing a vinyl-based resin and a crystalline resin, and a release agent containing a hydrocarbon wax, a content of the vinyl-based resin with respect to a total mass of the binder resin is 50% by mass or more, the first toner contains the crystalline resin having a moiety having a crystal structure and a crystal nucleating agent moiety having a crystal nucleating agent, and the second toner contains the cyan colorant that is a compound represented by general formula (1).
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3.发明申请公开(公告)号：US20210063905A1
公开(公告)日：2021-03-04
申请号：US16993352
申请日：2020-08-14
申请人： Konica Minolta, Inc.
发明人： Takaki KAWAMURA , Noboru UEDA , Natsuki ITO , Yusuke TAKIGAURA , Ami MOTOHASHI
摘要： An electrostatic latent image developing toner set of the present invention is an electrostatic latent image developing toner set including at least a yellow toner, a magenta toner, and a cyan toner, wherein when exothermic peak top temperatures during decreasing temperature in differential scanning calorimetry of the yellow toner, the magenta toner, and the cyan toner are assumed to be P(Y), P(M), and P(C), respectively, the exothermic peak top temperatures satisfy the following expression (1). 70≤P(Y)≤P(M)≤P(C)≤90(° C.) (1)
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公开(公告)号：US20190258185A1
公开(公告)日：2019-08-22
申请号：US16235535
申请日：2018-12-28
申请人： Konica Minolta, Inc.
发明人： Takaki KAWAMURA , Shiro HIRANO , Junya ONISHI , Ami MOTOHASHI
IPC分类号： G03G9/087
摘要： Provided is an electrostatic image developing toner including: toner mother particles containing a binder resin and a releasing agent; and an external additive, wherein the binder resin contains a crystalline resin, and the electrostatic image developing toner satisfies the following formulas (1) and (2), tan δ3° C./min
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公开(公告)号：US20200379365A1
公开(公告)日：2020-12-03
申请号：US16884817
申请日：2020-05-27
申请人： Konica Minolta, Inc.
发明人： Aya SHIRAI , Noboru UEDA , Takaki KAWAMURA , Yusuke TAKIGAURA , Natsuki ITO , Ami MOTOHASHI
摘要： An object of the present invention is to provide a new electrostatic latent image developing toner capable of suppressing adhesiveness of a release agent to a member such as a roller or the like and capable of suppressing gloss unevenness and gloss memory.An electrostatic latent image developing toner containing a binder resin, a release agent, and a colorant, wherein the binder resin contains a crystalline resin, the release agent contains a hydrocarbon wax having a branching degree of 3 to 52%, and a top temperature of an exothermic peak during cooling of the electrostatic latent image developing toner measured by a differential scanning calorimetry is within a range of 60 to 85° C.
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公开(公告)号：US20190187577A1
公开(公告)日：2019-06-20
申请号：US16163090
申请日：2018-10-17
申请人： Konica Minolta Inc.
发明人： Tatsuya FUJISAKI , Ami MOTOHASHI , Takaki KAWAMURA
IPC分类号： G03G9/087
CPC分类号： G03G9/08755 , G03G9/0819 , G03G9/0823 , G03G9/08782 , G03G9/08795 , G03G9/08797
摘要： Provided is an image forming method using an electrostatic image developing toner containing: toner mother particles including a binder resin; and an external additive, wherein the binder resin contains a vinyl resin in an amount of 40 mass % or more with respect to the total amount of the binder resin, the image forming method including a step of: forming an image so that an image surface resistance value at 70° C. by a temperature change method of the formed image is set to be 5×1013 Ω or less.
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公开(公告)号：US20190163095A1
公开(公告)日：2019-05-30
申请号：US16185900
申请日：2018-11-09
申请人： Konica Minolta, Inc.
发明人： Junya ONISHI , Kentarou MOGI , Ami MOTOHASHI , Shiro HIRANO
摘要： In an image forming method according to the present invention, an image is formed by removing residual charge from the image on an image recording medium. The image forming method includes formation of an image for forming a toner image by fixing a toner on the image recording medium and application of voltage from a voltage applier, the voltage having a polarity reverse to a polarity of a surface potential of the toner image. The toner includes toner base particles and an external additive. The toner base particles include a crystalline polyester resin.
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