公开(公告)号：US5338638A

公开(公告)日：1994-08-16

申请号：US797992

申请日：1991-11-26

申请人： Kiyoko Tsuchiya ,  Koichi Tomiyama ,  Masayoshi Kato ,  Tsutomu Kukimoto ,  Hiroshi Yusa

发明人： Kiyoko Tsuchiya ,  Koichi Tomiyama ,  Masayoshi Kato ,  Tsutomu Kukimoto ,  Hiroshi Yusa

IPC分类号： G03G9/087

CPC分类号： G03G9/08708 ,  G03G9/08706 ,  G03G9/08793 ,  G03G9/08795

摘要： A toner for developing an electrostatic image is provided as a pulverized mixture including a binder resin and a colorant. The binder resin is characterized by a molecular weight distribution on a GPC chromatogram of its tetrahydrofuran (THF)-soluble resin content including at least 15% and below 35% of a resin component in a molecular weight region of at most 5000 and at least 3 wt. % of a resin component in a molecular weight region of at least 5.times.10.sup.6 and showing a main peak in a molecular weight region of 5000 to 10.sup.5. The binder resin also has an acid value of 2-100 mg KOH/g. The THF-soluble resin component in the molecular weight region of at least 5.times.10.sup.6 is enriched during a melt-kneading step during the toner production.

摘要翻译： 提供用于显影静电图像的调色剂作为包括粘合剂树脂和着色剂的粉碎混合物。 粘合剂树脂的特征在于其四氢呋喃（THF）可溶性树脂含量的GPC色谱图中的分子量分布，其包含至少15％且低于35％的分子量区域中的树脂组分的至多5000和至少3 重量 ％的分子量区域中的树脂组分为至少5×10 6，并且在5000至105的分子量范围内显示出主峰。粘合剂树脂的酸值为2-100mg KOH / g。 在调色剂生产过程中，在熔融捏合步骤期间富含至少5×10 6分子量的THF可溶性树脂组分。

公开(公告)号：US5270143A

公开(公告)日：1993-12-14

申请号：US783185

申请日：1991-10-28

申请人： Koichi Tomiyama ,  Masayoshi Kato ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Kiyoko Tsuchiya

发明人： Koichi Tomiyama ,  Masayoshi Kato ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Kiyoko Tsuchiya

IPC分类号： G03G9/08 ,  G03G9/097

CPC分类号： G03G9/0827 ,  G03G9/097

摘要： A developer for developing an electrostatic image has a toner, fine resin particles with a surface shape sphericity .psi. of from 0.90 to 0.50, and fine inorganic particles.

公开(公告)号：US5424810A

公开(公告)日：1995-06-13

申请号：US942840

申请日：1992-09-10

申请人： Koichi Tomiyama ,  Hiroyuki Suematsu ,  Masayoshi Kato ,  Hiroshi Yusa ,  Takakuni Kobori

发明人： Koichi Tomiyama ,  Hiroyuki Suematsu ,  Masayoshi Kato ,  Hiroshi Yusa ,  Takakuni Kobori

IPC分类号： G03G9/083 ,  G03G15/09

CPC分类号： G03G9/0834

摘要： A magnetic toner for electrophotography is composed from a binder resin and a silicon-containing magnetic iron oxide. The magnetic toner has a weigh-average particle size o at most 13.5 .mu.m and has a particle size distribution such that it contains o more than 50 wt, % of magnetic toner particles having a particle size of at least 12.7 .mu.m. The magnetic toner is able to show high developing performances because of richness in fine particles and is also provided with an improved environmental stability because the magnetic iron oxide used therein contains 0.5-4 wt, % silicon (based on total iron content) and has a specific silicon distribution such that the magnetic iron oxide has a total silicon content (A), a silicon content (B) dissolved together with the magnetic iron oxide when the magnetic iron oxide is dissolved up to 20 wt, % dissolution of iron, and a superficial silicon content (C), satisfying relations of B/A=44-84% and C/A=10-55%. The performances are enhanced if the magnetic toner is blended with additives such as inorganic fine powder or resin fine particles.

摘要翻译： 用于电子照相的磁性调色剂由粘合剂树脂和含硅磁性氧化铁组成。 磁性调色剂具有至多13.5μm的重均粒径，并且具有使其含有超过50重量％的粒径至少为12.7μm的磁性调色剂颗粒的粒度分布。 磁性调色剂由于细颗粒的丰富性而能够显示高显影性能，并且由于其中使用的磁性氧化铁含有0.5-4重量％的硅（基于总铁含量）并具有改善的环境稳定性，并且具有 磁性氧化铁具有总硅含量（A），当磁性氧化铁被溶解时与磁性氧化铁溶解在一起的硅含量（B）高达20重量％，铁溶解度高， 表面硅含量（C），满足B / A = 44-84％和C / A = 10-55％的关系。 如果将磁性调色剂与无机细粉或树脂微粒等添加剂混合，则性能得到提高。

公开(公告)号：US5447815A

公开(公告)日：1995-09-05

申请号：US70844

申请日：1993-06-03

申请人： Masayoshi Kato ,  Koichi Tomiyama ,  Hiroshi Yusa

发明人： Masayoshi Kato ,  Koichi Tomiyama ,  Hiroshi Yusa

IPC分类号： C09C1/30 ,  C09C3/12 ,  G03G9/097 ,  G03G9/10

CPC分类号： C09C1/3081 ,  C09C3/12 ,  G03G9/09716 ,  G03G9/10 ,  C01P2004/61

摘要： A developer for developing an electrostatic image, comprising a toner and treated fine powder which has been treated with silicone oil or silicone varnish, wherein the treated fine powder has a specific surface area which is 0.4 to 0.8 time as large as the specific surface area of untreated fine powder.

摘要翻译： 一种用于显影静电图像的显影剂，其包括用硅油或有机硅清漆处理过的调色剂和经处理的细粉末，其中经处理的细粉末的比表面积为比表面积的0.4〜0.8倍 未经处理的细粉。

公开(公告)号：US5319424A

公开(公告)日：1994-06-07

申请号：US118720

申请日：1993-09-10

申请人： Koichi Tomiyama ,  Masayoshi Kato ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Kiyoko Tsuchiya

发明人： Koichi Tomiyama ,  Masayoshi Kato ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Kiyoko Tsuchiya

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G15/14 ,  G03G15/02

CPC分类号： G03G9/0827 ,  G03G9/097

摘要： A developer for developing an electrostatic image has a toner, fine resin particles with a surface shape sphericity .psi. of from 0.90 to 0.50, and fine inorganic particles.

摘要翻译： 用于显影静电图像的显影剂具有调色剂，具有0.90至0.50的表面形状球形度的细小树脂颗粒和无机细颗粒。

公开(公告)号：US5262267A

公开(公告)日：1993-11-16

申请号：US848659

申请日：1992-03-09

申请人： Tsuyoshi Takiguchi ,  Tetsuya Kuribayashi ,  Koichi Tomiyama ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Eiichi Imai

发明人： Tsuyoshi Takiguchi ,  Tetsuya Kuribayashi ,  Koichi Tomiyama ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Eiichi Imai

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/097 ,  G03G13/09 ,  G03G13/06

CPC分类号： G03G13/09 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/097

摘要： A magnetic developer for developing an electrostatic latent image, including hydrophobic silica fine powder and an insulating magnetic toner comprising at least a binder resin and a magnetic material comprising spherical magnetic particles; wherein 0.16 to 1.6 wt. parts of the hydrophobic silica fine powder is mixed with 100 wt. parts of the insulating magnetic toner; the developer contains 17-60% by number of magnetic toner particles having a particle size of 5 microns or smaller, 5-50% by number of magnetic toner particles having a particle size of 6.35-10.08 microns, and 2.0% by volume or less of magnetic toner particles having a particle size of 12.7 microns or larger.

摘要翻译： 一种用于显影静电潜像的磁性显影剂，包括疏水性二氧化硅细粉末和至少包含粘合剂树脂和包含球形磁性颗粒的磁性材料的绝缘磁性调色剂; 其中0.16至1.6wt。 将疏水性二氧化硅细粉末的一部分与100重量％ 部分绝缘磁性调色剂; 显影剂含有17-60个数量的粒径为5微米或更小的磁性调色剂颗粒，5-50个数量的粒径为6.35-10.08微米的磁性调色剂颗粒和2.0体积％以下的 的粒径为12.7微米或更大的磁性调色剂颗粒。

公开(公告)号：US6002895A

公开(公告)日：1999-12-14

申请号：US892913

申请日：1997-07-15

申请人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

发明人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

IPC分类号： G03G9/083 ,  G03G9/087 ,  G03G21/16

CPC分类号： G03G9/0834 ,  G03G9/08795

摘要： A toner is comprised of a composition containing at least a polymer component and a charge control agent. The polymer component contains substantially no tetrahydrofuran (THF)-insoluble matter. The polymer component THF-soluble has a major peak and a minor peak in the specific molecular weight regions in gel permeation chromatography (GPC). The low molecular weight component and high molecular weight component of the polymer component, each of which shows the specific molecular weight region in GPC, have the specific acid values, respectively. The difference between the acid values is in the specific range.

摘要翻译： 调色剂由至少含有聚合物组分和电荷控制剂的组合物组成。 聚合物组分基本上不含四氢呋喃（THF） - 不溶物质。 在凝胶渗透色谱（GPC）中，可溶于THF的聚合物组分在特定分子量区域具有主峰和次峰。 聚合物组分的低分子量组分和高分子量组分分别具有特定的酸值，分别表示GPC中的特定分子量区域。 酸值之间的差异在特定范围内。

公开(公告)号：US5663026A

公开(公告)日：1997-09-02

申请号：US619873

申请日：1996-03-20

申请人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

发明人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/09 ,  G03G9/097 ,  G03G15/09

CPC分类号： G03G9/09775 ,  G03G9/0819 ,  G03G9/0833 ,  G03G9/0834 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/091 ,  G03G9/09783

摘要： A magnetic toner is formed from a binder resin and silicon-containing magnetic iron oxide particles. The magnetic toner has a weight-average particle size of at most 13.5 .mu.m, and the magnetic toner has a particle size distribution such that magnetic toner particles having a particle size of at least 12.7 .mu.m are contained in an amount of at most 50 wt. %. The magnetic iron oxide particles have a silicon content of 0.4-2.0 wt. % based on iron, and the magnetic iron oxide particles have an Fe/Si atomic ratio of 1.2-4.0 at the utmost surfaces thereof. Because of the use of such magnetic iron oxide particles having a specifically controlled overall and surface Si contents, the magnetic toner can show stable performances even after standing in a high humidity environment.

摘要翻译： 磁性调色剂由粘合剂树脂和含硅磁性氧化铁颗粒形成。 磁性调色剂具有至多13.5μm的重均粒径，并且磁性调色剂具有使得粒径至少为12.7μm的磁性调色剂颗粒的含量至多为50 重量 ％。 磁性氧化铁颗粒的硅含量为0.4-2.0重量％。 以铁为基准，磁性氧化铁粒子的最表面的Fe / Si原子比为1.2〜4.0。 由于使用具有特定控制的整体和表面Si含量的这种磁性氧化铁颗粒，因此即使在高湿度环境中放置之后，磁性调色剂也能显示出稳定的性能。

公开(公告)号：US5307122A

公开(公告)日：1994-04-26

申请号：US558097

申请日：1990-07-26

申请人： Manabu Ohno ,  Hisayuki Ochi ,  Tetsuhito Kuwashima ,  Hiroyuki Suematsu ,  Eiichi Imai ,  Tsuyoshi Takiguchi ,  Koichi Tomiyama ,  Tsutomu Kukimoto ,  Hiroshi Yusa

发明人： Manabu Ohno ,  Hisayuki Ochi ,  Tetsuhito Kuwashima ,  Hiroyuki Suematsu ,  Eiichi Imai ,  Tsuyoshi Takiguchi ,  Koichi Tomiyama ,  Tsutomu Kukimoto ,  Hiroshi Yusa

IPC分类号： G03G15/02 ,  G03G9/08 ,  G03G9/083 ,  G03G9/087 ,  G03G9/097 ,  G03G13/02 ,  G03G13/09 ,  G03G15/08 ,  H04N1/29

CPC分类号： G03G9/0819 ,  G03G13/025 ,  G03G13/09 ,  G03G9/0821 ,  G03G9/0836 ,  G03G9/08726 ,  G03G9/08733 ,  G03G9/08791 ,  G03G9/09716 ,  G03G2215/021 ,  G03G2221/183 ,  G03G9/08795

摘要： An image forming apparatus includes a member to be charged for carrying an electrostatic image, a contact-charging means for charging the member to be charged in contact with the member to be charged, and a developing means for developing the electrostatic image carried on the member to be charged. The developing means includes a developer for developing the electrostatic image comprising a toner and hydrophobic inorganic fine powder. The hydrophobic inorganic fine powder not only improves the fluidity of the developer and adjusts the chargeability of the developer but also prevents difficulties due to interaction between the member to be charged and the contact charging means in the presence of residual developer, such as damages of the member to be charged and toner-sticking onto the member to be charged.

摘要翻译： 图像形成装置包括被充电以承载静电图像的构件;接触充电装置，用于对被充电构件进行充电;与显影装置，用于使被构件上承载的静电图像显影; 待充电。 显影装置包括用于使包含调色剂和疏水性无机细粉末的静电图像显影的显影剂。 疏水性无机细粉不仅提高显影剂的流动性，而且可以调节显影剂的带电性，而且还可以防止在残留显影剂存在下被充电元件与接触充电装置之间的相互作用造成的困难，例如 要充电的部件和墨粉粘在要充电的部件上。

公开(公告)号：US5210617A

公开(公告)日：1993-05-11

申请号：US894579

申请日：1992-06-05

申请人： Koichi Tomiyama ,  Tsuyoshi Takiguchi ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Eiichi Imai

发明人： Koichi Tomiyama ,  Tsuyoshi Takiguchi ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Eiichi Imai

IPC分类号： G03G9/08 ,  G03G9/097

CPC分类号： G03G9/0827 ,  G03G9/0823 ,  G03G9/097

摘要： A developer for developing electrostatic latent images is constituted by a toner, and negatively chargeable spherical resin particles having an average particle size of 0.03-1.0 micron and a volume resistivity of 10.sup.6 -10.sup.12 ohm.cm. The toner may comprise toner particles and hydrophobic inorganic fine powder, which is generally used in a larger amount than the negatively chargeable spherical resin particles. The negatively chargeable spherical resin particles function to provide a toner image which is faithful to an electrostatic latent image formed on a photosensitive member while preventing toner-sticking onto the photosensitive member preferably in combination with a contact-charging means for charging the photosensitive member.

摘要翻译： 用于显影静电潜像的显影剂由调色剂和平均粒度为0.03-1.0微米，体积电阻率为106-1012欧姆·厘米的带负电荷的球形树脂颗粒构成。 调色剂可以包含调色剂颗粒和疏水性无机细粉末，其通常以比带负电荷的球形树脂颗粒更大的量使用。 带负电荷的球形树脂颗粒的作用是提供一种调色剂图像，其忠实于形成在感光构件上的静电潜像，同时防止调色剂粘附到感光构件上，优选与用于对感光构件充电的接触充电装置组合。