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公开(公告)号：EP3582023A1
公开(公告)日：2019-12-18
申请号：EP19179610.1
申请日：2019-06-12
摘要： Provided is a two-component developer has a toner including a toner particle including a binder resin, and a magnetic carrier, wherein the binder resin includes 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 different from the first polymerizable monomer, the first polymerizable monomer is a specific (meth)acrylic acid ester, a content and an SP value of the first and second monomer units in the polymer A fall within respective specific ranges, the magnetic carrier has a magnetic core and a coating resin of the surface of the magnetic core, the coating resin includes a polymer B having monomer units (a) and (b), each SP value of the monomer units (a) and (b) is a specific value.
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公开(公告)号：EP2214058B1
公开(公告)日：2016-10-19
申请号：EP08844482.3
申请日：2008-10-29
发明人： HIROKO, Shuichi , DOJO, Tadashi , MAGOME, Michihisa , YANASE, Eriko , MATSUI, Takashi , SANO, Tomohisa , SAKAKIBARA, Akira , SUZUMURA, Yoshitaka
CPC分类号： G03G9/0833 , G03G9/0827 , G03G9/0835 , G03G9/0838 , G03G9/0839 , G03G9/08711
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3.发明公开IMAGE FORMING METHOD, MAGNETIC TONER, AND PROCESS UNIT 有权BILDERZEUGUNGSVERFAHREN UND PROZESSEINHEIT
公开(公告)号：EP2071406A1
公开(公告)日：2009-06-17
申请号：EP08765555.1
申请日：2008-06-06
发明人： DOJO, Tadashi , MAGOME, Michihisa , YANASE, Eriko , MATSUI, Takashi , SANO, Tomohisa , SAKAKIBARA, Akira , HIROKO, Shuichi
CPC分类号： G03G9/083 , G03G9/0827 , G03G15/0813
摘要： An image-forming method is provided which can provide stable image density irrespective of use environments and does not cause image defects such as fogging, tailing, or transfer voids, even when being applied to a developing sleeve with a reduced diameter. In the image-forming method, a latent image bearing member and a toner bearing member bearing a magnetic toner on its surface and having inside a unit for generating a magnetic field are placed with a predetermined interval, and an alternating field is applied between the latent image bearing member and the toner bearing member, and an electrostatic latent image borne by the latent image bearing member is developed with the magnetic toner. The toner bearing member has an outer diameter of 5.0 mm or more and less than 12.0 mm, and the magnetic toner has an average circularity of 0.950 or more and a compressibility of 30 or less obtained from the following expression (1): Compressibility = 1 - apparent density / tap density × 100 The total energy of the toner measured with a powder flowability measuring apparatus satisfies a specific value.
摘要翻译： 提供了一种图像形成方法，其可以在不受使用环境的影响的情况下提供稳定的图像浓度，并且即使当施加到具有减小的直径的显影套筒时也不会引起诸如起雾，拖尾或转印空隙的图像缺陷。 在图像形成方法中，以预定间隔放置潜像承载部件和在其表面上具有磁性调色剂并且具有用于产生磁场的单元内的调色剂承载部件，并且在潜在的 图像承载部件和调色剂承载部件以及由潜像承载部件承载的静电潜像用磁性调色剂显影。 调色剂承载部件的外径为5.0mm以上且小于12.0mm，磁性调色剂的平均圆形度为0.950以上，压缩率为30以下，从下式（1）得到：压缩性= 1 - 表观密度/振实密度×100用粉末流动性测量装置测量的调色剂的总能量满足特定值。
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公开(公告)号：EP3582020A1
公开(公告)日：2019-12-18
申请号：EP19179603.6
申请日：2019-06-12
发明人： KAMIKURA, Kenta , MATSUI, Takashi , AOKI, Kenji , SUZUKI, Masao , SHIMANO, Tsutomu , TAGAWA, Reo
摘要： The toner has a toner particle in which a toner core containing a binder resin is coated with a shell layer, wherein the binder resin contains a polymer A that has a first monomer unit and a second monomer unit; the first unit is derived from (meth)acrylate ester having an alkyl group having 18 to 36 carbon atoms; the content of the first monomer unit in the polymer is 5.0 to 60.0 mol%; the content of the second monomer unit is 20.0 to 95.0 mol%; the following formula (1) is satisfied when the SP value of the first unit is denoted by SP 11 and the SP value of the second unit is denoted by SP 21 ; and the toner core is coated with a highly uniform shell over at least 90% of the circumference of the toner cross section; 3.00 ≤ SP 21 − SP 11 ≤ 25.00
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公开(公告)号：EP3582015A1
公开(公告)日：2019-12-18
申请号：EP19179599.6
申请日：2019-06-12
发明人： AOKI, Kenji , MATSUI, Takashi , KAMIKURA, Kenta , SUZUKI, Masao , SHIMANO, Tsutomu , TAGAWA, Reo
IPC分类号： G03G9/087
摘要： A toner, including a toner particle that contains a binder resin and a release agent, wherein the binder resin contains a polymer A, the polymer A including a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer different from the first polymerizable monomer; the first polymerizable monomer is selected from (meth)acrylic acid esters having a C 18-36 alkyl group; the toner has a first monomer unit content and a second monomer unit content in the polymer A which are within specific ranges, and assuming that an SP value of the first monomer unit is taken as SP 11 and an SP value of the second monomer unit is taken as SP 21 , the formula (1) below is satisfied, and the molecular weight of the release agent is at least 1,000. 3.00 ≤ SP 21 − SP 11 ≤ 25.00
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公开(公告)号：EP2287673A1
公开(公告)日：2011-02-23
申请号：EP09754850.7
申请日：2009-05-26
发明人： MAGOME, Michihisa , DOJO, Tadashi , YANASE, Eriko , MATSUI, Takashi , SANO, Tomohisa , SAKAKIBARA, Akira , HIROKO, Shuichi
CPC分类号： G03G9/0827 , G03G9/083 , G03G9/08711 , G03G9/08755 , G03G9/08782 , G03G9/08793 , G03G9/09733
摘要： It is a subject to provide a toner which has superior low-temperature fixing performance and can enjoy a high image density without causing any fog even during long-term service. In a toner containing at least a binder resin, a colorant, an ester compound and a low-melting material, the ester compound is an ester of dipentaerythritol with a carboxylic acid having 18 or more to 25 or less carbon atoms, and, where the melting point of the ester compound is represented by Tm (A) (°C) and the melting point of the low-melting material is represented by Tm (B) (°C), the toner satisfying the relationship of: Tm B ≤ Tm A + 5.
摘要翻译： 提供具有优异的低温定影性能并且即使在长期使用中也可以享受高图像浓度而不引起任何雾的调色剂。 在至少含有粘合剂树脂，着色剂，酯化合物和低熔点材料的调色剂中，酯化合物是二季戊四醇与碳原子数为18以上且25以下的羧酸的酯， 酯化合物的熔点由Tm（A）（℃）表示，低熔点材料的熔点由Tm（B）（℃）表示，调色剂满足关系：Tm B‰¤ Tm A + 5。
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公开(公告)号：EP3582019A1
公开(公告)日：2019-12-18
申请号：EP19179609.3
申请日：2019-06-12
摘要： Provided is a magnetic toner having a toner particle containing a binder resin and a magnetic body, wherein the binder resin contains a polymer A having a first monomer unit and a second monomer unit, the first polymerizable monomer is at least one selected from the group consisting of the (meth)acrylic acid esters having C 18-36 alkyl groups, a content of the first monomer unit and a content of the second monomer unit based on the total moles of all monomer units in the polymer A are respectively 5.0 to 60.0 mol% and 20.0 to 95.0 mol%, and assuming that an SP value of the first monomer unit and the second monomer unit are taken as SP 11 (J/cm 3 ) 0.5 and SP 21 (J/cm 3 ) 0.5 , respectively, 3.00 ≤ (SP 21 - SP 11 ) ≤ 25.00 is satisfied, and an oil absorption of the magnetic body is 5 to 40 ml/100 g.
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公开(公告)号：EP3582018A1
公开(公告)日：2019-12-18
申请号：EP19179607.7
申请日：2019-06-12
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%, SP 11 of the first monomer unit and SP 21 of the second monomer unit satisfy 3.00 ≤ (SP 21 - SP 11 ) ≤ 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：EP2071406B1
公开(公告)日：2013-04-03
申请号：EP08765555.1
申请日：2008-06-06
发明人： DOJO, Tadashi , MAGOME, Michihisa , YANASE, Eriko , MATSUI, Takashi , SANO, Tomohisa , SAKAKIBARA, Akira , HIROKO, Shuichi
CPC分类号： G03G9/083 , G03G9/0827 , G03G15/0813
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公开(公告)号：EP2214058A1
公开(公告)日：2010-08-04
申请号：EP08844482.3
申请日：2008-10-29
发明人： HIROKO, Shuichi , DOJO, Tadashi , MAGOME, Michihisa , YANASE, Eriko , MATSUI, Takashi , SANO, Tomohisa , SAKAKIBARA, Akira , SUZUMURA, Yoshitaka
CPC分类号： G03G9/0833 , G03G9/0827 , G03G9/0835 , G03G9/0838 , G03G9/0839 , G03G9/08711
摘要： A magnetic toner having magnetic toner particles containing at least a binder resin and a magnetic material, wherein; in a test in which the magnetic toner is dispersed in 5 mol/liter hydrochloric acid to dissolve the magnetic material, and where the dissolution percentage of the magnetic material with respect to the total content of the magnetic material at a point of time of 3 minutes after the magnetic toner has begun to be dispersed in the hydrochloric acid is represented by S 3 (% by mass), the dissolution percentage of the magnetic material with respect to the total content of the magnetic material at a point of time of 15 minutes after the magnetic toner has →begun to be dispersed in the hydrochloric acid is represented by S 15 (% by mass) and the proportion S c of the dissolution level of the magnetic material at from 3 minutes to 15 minutes after the magnetic toner has begun to be dispersed in the hydrochloric acid, (V 3→15 ), to the dissolution level of the magnetic material at from 15 minutes to 30 minutes after the magnetic toner has begun to be dispersed in the hydrochloric acid, (V 15→30 ), is represented by S c (= V 3→15 /V 15→30 ), the S 3 , the S 15 and the S c satisfy the following expressions: 0.5 ≤ S 3 ≤ 10 , 40 ≤ S 15 ≤ 80 ; 1.2 ≤ S c ≤ 10 ;
and
the magnetic toner has a dielectric loss factor (tanδ) at 25°C and at a frequency 1.0 × 10 4 Hz, within the range of from 2.0 × 10 -3 or more to 1.5 × 10 -2 or less.摘要翻译： 一种具有至少含有粘合剂树脂和磁性材料的磁性调色剂颗粒的磁性调色剂，其中; 在磁性调色剂分散在5摩尔/升盐酸中以溶解磁性材料的测试中，并且其中在3分钟的时间点磁性材料相对于磁性材料的总含量的溶解百分比 在磁性调色剂开始分散到盐酸中之后以S3（质量％）表示时，磁性材料相对于磁性材料在15分钟后的时间点的总含量的溶解百分比 开始分散在盐酸中的磁性调色剂用S15（质量％）表示，磁性调色剂开始分散后3分钟至15分钟时磁性材料的溶解度的比例Sc 在磁性调色剂开始分散在盐酸中15分钟至30分钟后，盐酸（V3→15）达到磁性材料的溶解水平，（V15→30 ）由Sc（= V3→15 / V15→30）表示时，S3，S15和Sc满足以下表达式：0.5≤S3≤10,40≤S15≤80; 1.2≤Sc≤10; 并且磁性调色剂在25℃和1.0×104Hz的介电损耗因子（tanδ）在2.0×10 -3或更大至1.5×10 -2或更小的范围内。
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