公开(公告)号：JP2005258330A

公开(公告)日：2005-09-22

申请号：JP2004073190

申请日：2004-03-15

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： SAWAI MASAYUKI ,  KAWAHARA ARIHIKO ,  KOREMATSU KAZUYA ,  NISHIKAWA TORU ,  ISHIDA TOSHINAO ,  KIDA YASUSHI ,  SEKI MASAHIRO

IPC: G03G9/08 ,  F16C13/00 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a non-magnetic one-component development apparatus that can form images of high quality for a long period of time without causing aggregation and liquidity degradation of toner, filming of toner to a developing roller and photoreceptor, toner-fusion to a control blade, and image defects such as ground fog, void, fading or the like. SOLUTION: In the non-magnetic one-component development apparatus 4, a developing roller 5 uses elastic materials with spring hardness of Hs (A) 45-65°, and a feed roller 7 uses foams of continuous closed-cell foam rubber materials having not less than 400/cm 2 in the number of unit cell and not more than 500 μm in the cell diameter. Further, the toner stored in a developer tank 9 uses toner particles containing binder resins and coloring agents that are externally added with inorganic fine particles of 250-600 nm in an average primary particle size. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种可以长时间形成高质量图像而不会引起调色剂的聚集和流动性降低的非磁性单组分显影装置，将调色剂成膜到显影辊和感光体 调色剂熔融到控制刮刀，以及诸如地面雾，空隙，褪色等的图像缺陷。 解决方案：在非磁性单组分显影装置4中，显影辊5使用具有Hs（A）45-65°的弹簧硬度的弹性材料，并且进料辊7使用泡沫的连续闭孔泡沫 橡胶材料在单元数目中不小于400 / cm 2 SP / 2，单元直径不大于500μm。 此外，存储在显影剂罐9中的调色剂使用含有粘合剂树脂和着色剂的调色剂颗粒，其外部加入平均一次粒径为250-600nm的无机细颗粒。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2004109201A

公开(公告)日：2004-04-08

申请号：JP2002268417

申请日：2002-09-13

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： SAWAI MASAYUKI ,  ISHIDA TOSHINAO ,  KIDA YASUSHI ,  KOREMATSU KAZUYA

IPC: G03G9/08 ,  G03G9/087 ,  G03G9/097 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide toner suitable for a nonmagnetic single component developing method by which a uniform thin layer of the toner can be stably formed on the peripheral face of a developing roller for a long time, melt sticking or deposition of the toner on a regulating blade can be definitely prevented, toner can be electrified with sufficient charges, and in particular, the state of a formed image can be preferably kept without causing fog on the image base, and to provide a method of nonmagnetic single component development by using the toner. SOLUTION: The negative charge toner is to be used for the method of nonmagnetic single component developing in which a supply roller to supply toner to a developing roller is used and the toner formed into a thin layer on the peripheral face of the developing roller by a regulating blade made of a metal is supplied to the surface of a photoreceptor in contact with the roller to develop an electrostatic latent image into a toner image. The toner comprises a mother toner comprising at least a binder resin and a coloring pigment, an external additive comprising inorganic fine particles, and an external additive comprising resin fine particles having the volume average particle size ratio of ≥1/85 and ≤1/15 with respect to the mother toner particles and having the covering rate of 0≥0.5% and ≤10 % with respect to the surfaces of the toner particles. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2004102028A

公开(公告)日：2004-04-02

申请号：JP2002265457

申请日：2002-09-11

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： ISHIDA TOSHINAO ,  SAWAI MASAYUKI ,  KIDA YASUSHI ,  KOREMATSU KAZUYA

IPC: G03G9/08 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a nonmagnetic one-component toner which has fixability, fluidity and electrostatic charging properties stabilized for many copies and to provide a nonmagnetic developing method using the one-component developer. SOLUTION: With respect to the non-magnetic one-component toner for use in a nonmagnetic one-component developer development method, inorganic particulates and two or more kinds of organic particulates are externally added onto the surfaces of mother toner particles consisting of at least a binder resin and a color pigment. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2008070662A

公开(公告)日：2008-03-27

申请号：JP2006250115

申请日：2006-09-14

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： MIYAMOTO AKIFUMI ,  ISHIDA TOSHINAO ,  SAWAI MASAYUKI ,  KATO TAKESHI ,  KOREMATSU KAZUYA ,  NISHIKAWA TORU

IPC: G03G9/113

Abstract: PROBLEM TO BE SOLVED: To provide a carrier and a two-component developer which are excellent in durability and environmental stability and therefore can provide stable electrostatic chargeability with time and provide a high quality image even when used for a long period of time and under a high temperature and high humidity in an image forming apparatus which is made compact and is speeded up.
SOLUTION: The carrier is formed by coating a core material with a coating resin, wherein the coating resin includes the first coating resin layer coating the outer circumference of the core material and containing a metal oxide and a second coating resin layer coating the outer circumference of the first coating resin layer.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供耐久性和环境稳定性优异的载体和双组分显影剂，因此即使长时间使用也能够随时间提供稳定的静电充电性并提供高质量的图像 并且在成形紧凑的图像形成装置中在高温高湿下被加速。 解决方案：载体通过用涂料树脂涂覆芯材而形成，其中涂布树脂包括涂覆芯材外周并含有金属氧化物的第一涂料树脂层和涂覆在其上的第二涂料树脂层 第一涂层树脂层的外周。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2006119672A

公开(公告)日：2006-05-11

申请号：JP2006007024

申请日：2006-01-16

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： ISHIDA TOSHINAO ,  MATSUMOTO MASANORI ,  SAWAI MASAYUKI ,  TAKEDA YUKO ,  KIDA YASUSHI

IPC: G03G9/10

Abstract: PROBLEM TO BE SOLVED: To provide a color image forming apparatus in which photoreceptors and toners can be used for the same duration in relation to respective colors in a tandem system, and which is low-cost.
SOLUTION: In the tandem system image forming apparatus in which electrostatic latent images are respectively formed on a plurality of photoreceptors, and which includes developing vessels respectively containing a plurality of toners having different colors for developing the respective electrostatic latent images, the plurality of toners include at least a toner for black and abrasive property of a carrier for the toner for black to a photoreceptor surface is lower than abrasive properties of carriers for the other toners for development.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种彩色图像形成装置，其中可以使用光感受器和调色剂相对于串联系统中的各种颜色相同的持续时间，并且是低成本的。 解决方案：在其中静电潜像分别形成在多个光感受器上并且包括分别包含多个具有不同颜色的调色剂的显影容器的串联系统成像设备中，用于显影各静电潜像，多个 调色剂至少包括用于黑色的调色剂和用于黑色感光体表面的调色剂的载体的研磨性能低于用于显影的其它调色剂的载体的研磨性能。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005140965A

公开(公告)日：2005-06-02

申请号：JP2003376806

申请日：2003-11-06

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KIDA YASUSHI ,  ISHIDA TOSHINAO ,  SAWAI MASAYUKI ,  SEKI MASAHIRO ,  KOREMATSU KAZUYA ,  NISHIKAWA TORU

IPC: G03G9/08 ,  G03G9/087

Abstract: PROBLEM TO BE SOLVED: To provide a nonmagnetic single component toner having suppressed filming, fog or the like for long-term use and capable of forming an image with stable picture quality.
SOLUTION: In the toner prepared by mixing and adding at least two kinds of external additives to toner particles containing at least a polyester resin and a coloring pigment, the external additives are silica fine particles having 5 to 100 nm average particle size and silica melamine composite fine particles having 300 to 1,000 nm average particle size.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种长期使用抑制成膜，雾化等的能够形成图像质量稳定的非磁性单组分调色剂。 解决方案：在通过混合并将至少两种外部添加剂添加到至少含有聚酯树脂和着色颜料的调色剂颗粒中制备的调色剂中，外部添加剂是平均粒度为5至100nm的二氧化硅细颗粒， 二氧化硅三聚氰胺复合微粒的平均粒径为300〜1000nm。 版权所有（C）2005，JPO＆NCIPI