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公开(公告)号：US20220342329A1
公开(公告)日：2022-10-27
申请号：US17658352
申请日：2022-04-07
发明人： Yuna Yamamoto , Takashi Matsui , Kenji Aoki , Yu Yoshida
IPC分类号： G03G9/087 , G03G9/08 , C08F212/10
摘要： A toner comprising a toner particle comprising a binder resin, wherein the binder resin comprises a resin A and a resin B, in a differential scanning calorimetric measurement, a peak top temperature of the largest endothermic peak is present within a specific temperature range and an endothermic amount of an endothermic peak derived from the resin A is 30 to 70 J/g per 1 g of the toner, a ratio of content of the resin A in the toner particle is 60.0 to 90.0 mass %, the resin A comprises 40.0 to 70.0 mass % of a monomer unit (a) represented by formula (1) below, and the resin B comprises 5.0 to 30.0 mass % of a monomer unit (b) represented by formula (2) below: in formulae (1) and (2), R1 and R2 denote a hydrogen atom or a methyl group, n and m denote a specific integer.
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公开(公告)号：US20220334507A1
公开(公告)日：2022-10-20
申请号：US17658174
申请日：2022-04-06
发明人： Kenji Aoki , Takashi Matsui , Yu Yoshida , Yuna Yamamoto
IPC分类号： G03G9/087
摘要： A toner having a toner particle having a binder resin, wherein in differential scanning calorimetry using the toner as a sample, a peak temperature of an endothermic peak derived from the binder resin at a first temperature rise is from 50° C. to 70° C., and an endothermic quantity per 1 g of the toner is from 30 J/g to 70 J/g, and when acetonitrile is used as a poor solvent and chloroform is used as a good solvent for a chloroform-soluble component of the binder resin, and a component eluted during a linear change from a mobile phase composition of 100% by volume of acetonitrile to a mobile phase composition of 100% by volume of chloroform is gradient LC analyzed, a specific relationship between the peaks is satisfied.
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公开(公告)号：US11448980B2
公开(公告)日：2022-09-20
申请号：US17113922
申请日：2020-12-07
发明人： Takashi Matsui , Noritaka Toyoizumi , Tsutomu Shimano , Kenji Aoki , Shohei Shibahara , Yuna Yamamoto
摘要： A toner comprising a toner particle comprising a binder resin and an azo dye, wherein the binder resin comprises a polymer A, the polymer A is a polymer having a monomer unit derived from methacrylonitrile, and a relationship among an amount of substance (mol) of the monomer unit derived from methacrylonitrile, an amount of substance (mol) of the azo dye, and the number of azo groups in the azo dye in the toner particle satisfies formula below: [(amount of substance of azo dye (mol))×(number of azo groups in azo dye)/(amount of substance of monomer unit derived from methacrylonitrile (mol))]≤0.500.
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公开(公告)号：US11262666B2
公开(公告)日：2022-03-01
申请号：US16910301
申请日：2020-06-24
发明人： Daisuke Yoshiba , Tomoya Nagaoka , Takashi Matsui
摘要： Provided is a positive-charging toner having a toner particle that contains a binder resin, the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters having a C18 to C36 alkyl group, the content of the first monomer unit in the polymer A is 5.0 to 60.0 mol % and the content of the second monomer unit is 20.0 to 95.0 mol %, SP11 of the first monomer unit and SP21 of the second monomer unit satisfy 3.00≤(SP21−SP11)≤25.00, and the work function of the toner is 5.0 to 5.4 V.
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公开(公告)号：US20210271469A1
公开(公告)日：2021-09-02
申请号：US17320986
申请日：2021-05-14
发明人： Takashi Matsui
摘要： A communication apparatus includes a first communication unit that communicates with a terminal apparatus using a first communication method, a second communication unit that communicates with a server apparatus using a second communication method different from the first communication method, a reception unit that controls receiving update information from the server apparatus in a case where the communication apparatus can communicate with the server apparatus via the second communication unit, an update unit that performs an update process for updating the communication apparatus using the update information, and a progress management unit that controls transmitting a progress status of a process regarding the update information to the terminal apparatus.
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公开(公告)号：US20210181648A1
公开(公告)日：2021-06-17
申请号：US17117223
申请日：2020-12-10
发明人： Tsutomu Shimano , Takashi Matsui , Kenji Aoki , Shohei Shibahara , Yuna Yamamoto
IPC分类号： G03G9/087 , G03G9/08 , C08F220/46
摘要： A toner comprising a toner particle including a crystalline resin, wherein where a complex modulus of elasticity at 30° C. is denoted by G*(30) and a complex modulus of elasticity at 50° C. is denoted by G*(50) in dynamic viscoelasticity measurement of the toner, and where a peak temperature of an exothermic peak derived from the crystalline resin in a temperature lowering process after a temperature is raised to 150° C., is denoted by Tc (° C.), a peak temperature of an endothermic peak derived from the crystalline resin in a temperature raising process after the temperature lowering process, is denoted by Tm (° C.), and an endothermic quantity is denoted by ΔH (J/g) in differential scanning calorimetry of the toner, G*(30), G*(50), Tc, Tm and ΔH satisfy specific relationships.
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公开(公告)号：US20200319567A1
公开(公告)日：2020-10-08
申请号：US16910301
申请日：2020-06-24
发明人： Daisuke Yoshiba , Tomoya Nagaoka , Takashi Matsui
摘要： Provided is a positive-charging toner having a toner particle that contains a binder resin, the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters having a C18 to C36 alkyl group, the content of the first monomer unit in the polymer A is 5.0 to 60.0 mol % and the content of the second monomer unit is 20.0 to 95.0 mol %, SP11 of the first monomer unit and SP21 of the second monomer unit satisfy 3.00≤(SP21−SP11)≤25.00, and the work function of the toner is 5.0 to 5.4 V.
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公开(公告)号：US10732530B2
公开(公告)日：2020-08-04
申请号：US16438566
申请日：2019-06-12
发明人： Takashi Matsui , Kenta Kamikura , Kenji Aoki , Masao Suzuki , Tsutomu Shimano , Reo Tagawa
IPC分类号： G03G9/087 , G03G9/08 , C08F212/10 , C08F220/18 , C08F220/44
摘要： Provided is a toner has a toner particle containing a binder resin and is characterized in that the binder resin contains a polymer A, which is a polymer of a composition containing a first polymerizable monomer, a second polymerizable monomer and a crosslinking agent, the first polymerizable monomer is at least one monomer selected from the group consisting of (meth)acrylic acid esters having an alkyl group with 18 to 36 carbon atoms, the crosslinking agent has two or more polymerizable double bonds, a content of the first polymerizable monomer in the composition is 5.0 to 60.0 mol %, a content of the second polymerizable monomer is 20.0 to 95.0 mol %, and when the SP values of the first polymerizable monomer, the second polymerizable monomer and the crosslinking agent are denoted by SP12, SP22 and SPC2, respectively, the formulae 0.60≤(SP22−SP12)≤15.00 and SP12
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公开(公告)号：US20190384196A1
公开(公告)日：2019-12-19
申请号：US16438537
申请日：2019-06-12
摘要： A toner has a toner particle including a binder resin, the binder resin includes a polymer A, the polymer A contains a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is selected from (meth)acrylic acid esters having an alkyl group having 18 to 36 carbon atoms, the content of the first monomer unit in the polymer A is 5.0 mol % to 60.0 mol %, the content of the second monomer unit in the polymer A is 20.0 mol % to 95.0 mol %, the SP value of the first monomer unit and the SP value of the second monomer unit satisfy a predetermined relationship, the polymer A includes a predetermined polyvalent metal, and the content of the polyvalent metal is 25 ppm to 500 ppm.
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公开(公告)号：US20190384193A1
公开(公告)日：2019-12-19
申请号：US16438541
申请日：2019-06-12
摘要： A toner having an inorganic fine particle and a toner particle containing a binder resin, wherein the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer that is different from the first polymerizable monomer, the first polymerizable monomer is selected from the (meth)acrylic acid esters each having a C18-36 alkyl group, the content of the first monomer unit in the polymer A is within a specific range, the SP value of the first monomer unit and the SP value of the second monomer unit are in a specific relationship to one another, the inorganic fine particle is surface treated with a compound having an alkyl group, and the volume resistivity of the inorganic fine particle is within a specific range.
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