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公开(公告)号：US4871639A
公开(公告)日：1989-10-03
申请号：US63053
申请日：1987-06-17
申请人： Takayoshi Aoki , Ikutaroh Nagatsuka , Masayuki Takeda , Toshio Honjo , Kazuhiro Itoh , Kenji Uchida
发明人： Takayoshi Aoki , Ikutaroh Nagatsuka , Masayuki Takeda , Toshio Honjo , Kazuhiro Itoh , Kenji Uchida
CPC分类号： G03G9/10
摘要： A carrier for developer is disclosed, which is produced by a process including the steps of mixing and heating a carrier material containing a binder resin and a magnetic powder and essentially free of solvent to obtain a molten dispersion of the magnetic powder in the resin; spraying the molten dispersion into droplets; and cooling the droplets to solidify the droplets into carrier particles. The carrier has excellent sphericality, high surface smoothness, and long life when used as a component of a two-component type developer in electrophotography.
摘要翻译： 公开了一种用于显影剂的载体，该方法包括以下步骤：混合和加热含有粘合剂树脂和磁性粉末并且基本上不含溶剂的载体材料，以获得磁粉在树脂中的熔融分散体; 将熔融分散体喷雾成液滴; 并冷却液滴以将液滴固化成载体颗粒。 当用作电子照相术中的双组分型显影剂的组分时，载体具有优异的球形度，高的表面光滑度和长的使用寿命。
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公开(公告)号：US4861694A
公开(公告)日：1989-08-29
申请号：US285383
申请日：1988-12-16
申请人： Takayoshi Aoki , Masayuki Takeda , Ikutaroh Nagatsuka , Toshio Honjo , Kazuhiro Itoh , Kenji Uchida
发明人： Takayoshi Aoki , Masayuki Takeda , Ikutaroh Nagatsuka , Toshio Honjo , Kazuhiro Itoh , Kenji Uchida
CPC分类号： G03G9/10
摘要： A process for producing carriers for a developer is disclosed, which comprises mixing and heating a carrier material containing a binder resin and a magnetic powder, and essentially free of solvent, to obtain a molten dispersion of the magnetic powder in the binder resin; spraying the molten dispersion into liquid droplets; and cooling the droplets to solidify the droplets into carrier particles. The process eliminates the use of solvents and produces carrier particles of superior toughness, surface smoothness, and sphericality.
摘要翻译： 公开了一种用于生产显影剂载体的方法，其包括混合和加热含有粘合剂树脂和磁性粉末并且基本上不含溶剂的载体材料，以获得磁性粉末在粘合剂树脂中的熔融分散体; 将熔融的分散体喷射到液滴中; 并冷却液滴以将液滴固化成载体颗粒。 该方法消除了使用溶剂并产生优异的韧性，表面光滑度和球形度的载体颗粒。
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公开(公告)号：US5110703A
公开(公告)日：1992-05-05
申请号：US496138
申请日：1990-03-19
IPC分类号： G03G9/10
CPC分类号： G03G9/10
摘要： A carrier for use in developing an electrostatic or magnetic latent image in electrophotography, electrostatic recording, electrostatic printing or the like, which carrier is produced by atomizing a molten mixture of a magnetic powder and a binder resin containing a polyolefin and a polyolefin having a functional group. The polyolefin having a functional group is present in an amount ranging from about 50% by weight or less based on the total weight of the binder resin.
摘要翻译： 用于显影电子照相，静电记录，静电印刷等中的静电或磁潜像的载体，该载体通过使包含聚烯烃和具有官能团的聚烯烃的磁性粉末和粘合剂树脂的熔融混合物雾化来制造 组。 具有官能团的聚烯烃的存在量为约50重量％以下，基于粘合剂树脂的总重量。
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公开(公告)号：US4868083A
公开(公告)日：1989-09-19
申请号：US77727
申请日：1987-07-27
IPC分类号： G03G9/10
CPC分类号： G03G9/10
摘要： A process for producing a developer carrier is disclosed, which comprises heating a carrier composition containing a resin, magnetic particles and a compound having a lower critical surface energy than the resin, to produce a carrier particle having a higher surface concentration of the compound having a lower critical surface energy. A developer carrier having an average particle size of at least about 50 .mu.m and containing a fluorine-containing compound and fine magnetic particles dispersed in a binder resin is also disclosed. The developer carriers according to the invention when used in magnetic brush development provide superior charge generation, extended life and improved image reproduction.
摘要翻译： 公开了一种制造显影剂载体的方法，其包括加热含有树脂，磁性颗粒和具有比树脂低的临界表面能的化合物的载体组合物，以产生具有较高表面能的化合物的载体颗粒， 降低临界表面能。 还公开了具有至少约50μm的平均粒度并含有含氟化合物和分散在粘合剂树脂中的细小磁性颗粒的显影剂载体。 当用于磁刷显影时，根据本发明的显影剂载体提供优异的电荷产生，延长的寿命和改进的图像再现性。
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公开(公告)号：US5155000A
公开(公告)日：1992-10-13
申请号：US436128
申请日：1989-11-14
CPC分类号： G03G9/09716
摘要： A dry toner composition containing titanium dioxide particles, the surfaces of the particles comprising an organic compound having a melting point of from about 40.degree. C. to about 150.degree. C.
摘要翻译： 含有二氧化钛颗粒的干燥调色剂组合物，颗粒的表面包含熔点为约40℃至约150℃的有机化合物。
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6.发明授权
公开(公告)号：US4965160A
公开(公告)日：1990-10-23
申请号：US412567
申请日：1989-09-25
CPC分类号： G03G9/107 , G03G9/1134 , G03G9/1139 , Y10T428/2998
摘要： A developer carrier is disclosed, which has a core containing a binder resin and a magnetic powder, and a surface layer thereon containing a compound having a lower critical surface tension than the binder resin. This developer when used in a magnetic brush development process provides superior charge characteristics, resistance to environmental changes, and extended life. In another aspect, the invention relates to a developer carrier produced by a process of (a) melting a carrier composition containing a binder resin, a magnetic powder and a compound having a lower critical surface tension than the binder resin, (b) spraying the molten carrier composition to form droplets, and (c) cooling the droplets with a gas stream having a temperature lower than the melting point of the composition to form substantially spherical particles having a high surface smoothness.
摘要翻译： 公开了一种显影剂载体，其具有含有粘合剂树脂和磁性粉末的芯，以及其上含有比粘合剂树脂具有较低临界表面张力的化合物的表面层。 这种显影剂用于磁刷显影工艺时，具有优异的电荷特性，耐环境变化，延长使用寿命。 另一方面，本发明涉及通过以下方法生产的显影剂载体：（a）熔化含有粘合剂树脂，磁性粉末和具有比粘合剂树脂低的临界表面张力的化合物的载体组合物，（b）将 熔融载体组合物以形成液滴，以及（c）用温度低于组合物熔点的气流冷却液滴，以形成具有高表面平滑度的基本上球形的颗粒。
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公开(公告)号：US4912004A
公开(公告)日：1990-03-27
申请号：US223819
申请日：1988-07-15
CPC分类号： G03G9/1133 , G03G9/1075
摘要： A carrier for a developer is disclosed, comprising a carrier core containing a binder resin and a magnetic powder as essential components, and a coating layer provided on the surface of the carrier core, the coating layer containing a polymer obtained by polymerizing a charge controlling monomer in the presence of polyolefin.
摘要翻译： 公开了一种用于显影剂的载体，包括载体芯，其包含粘合剂树脂和作为必需组分的磁粉，以及设置在载体芯的表面上的涂层，所述涂层含有通过聚合电荷控制单体 在聚烯烃存在下。
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公开(公告)号：US4859558A
公开(公告)日：1989-08-22
申请号：US143881
申请日：1988-01-14
CPC分类号： G03G9/09775
摘要： A toner composition for a two-component type developer capable of developing electrostatically charged images formed on a photoreceptor having a surface layer comprising organic substances, wherein the toner composition contains a fatty acid bisamide compound as an external additive.
摘要翻译： 一种用于双组分型显影剂的调色剂组合物，其能够显影形成在具有包含有机物质的表面层的感光体上的静电荷图像，其中调色剂组合物含有脂肪酸双酰胺化合物作为外部添加剂。
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公开(公告)号：US5059504A
公开(公告)日：1991-10-22
申请号：US488139
申请日：1990-03-05
申请人： Masayoshi Shinoki , Masahiro Takagi , Ikutaroh Nagatsuka , Koichi Kumashiro , Takayoshi Aoki , Masayuki Takeda
发明人： Masayoshi Shinoki , Masahiro Takagi , Ikutaroh Nagatsuka , Koichi Kumashiro , Takayoshi Aoki , Masayuki Takeda
IPC分类号： G03G9/113
CPC分类号： G03G9/1134 , Y10T428/2998
摘要： A carrier for a developer comprising a core material coated with a coating material consisting essentially of a copolymer of vinylidene fluoride and trifluoroethylene or hexafluoropropylene is disclosed. The carrier causes neither fog generation in the initial stage of running nor contamination of a developing machine because of its high rate of charge increase and satisfactory resistance to surface contamination, and exhibits excellent adhesion between the core material and the coating material.
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公开(公告)号：US4929528A
公开(公告)日：1990-05-29
申请号：US267882
申请日：1988-11-07
申请人： Masayoshi Shinoki , Masahiro Takagi , Ikutaroh Nagatsuka , Koichi Kumashiro , Takayoshi Aoki , Masayuki Takeda
发明人： Masayoshi Shinoki , Masahiro Takagi , Ikutaroh Nagatsuka , Koichi Kumashiro , Takayoshi Aoki , Masayuki Takeda
IPC分类号： G03G9/113
CPC分类号： G03G9/1134 , Y10T428/2998
摘要： A carrier for a developer comprising a core material coated with a coating material consisting essentially of a copolymer of vinylidene fluoride and trifluoroethylene or hexafluoropropylene is disclosed. The carrier causes neither fog generation in the initial stage of running nor contamination of a developing machine because of its high rate of charge increase and satisfactory resistance to surface contamination, and exhibits excellent adhesion between the core material and the coating material.
摘要翻译： 公开了一种用于显影剂的载体，其包括涂覆有基本上由偏二氟乙烯和三氟乙烯或六氟丙烯的共聚物的涂层材料的芯材料。 载体在运行的初始阶段既不引起雾化，也不会因显影机的高电荷增加和表面污染的良好性而导致显影机的污染，并且在芯材和涂层材料之间表现出优异的粘附性。
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