公开(公告)号：JP2010026259A

公开(公告)日：2010-02-04

申请号：JP2008187772

申请日：2008-07-18

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： ICHII CHIKAO ,  IWAMATSU TADASHI ,  HIRAKAWA HIROYUKI ,  YOSHIOKA NOBUYUKI ,  WADA OSAMU

IPC: G03G9/113 ,  G03G9/08 ,  G03G9/107 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a carrier which, in long-term use in an actual machine, suppresses deterioration of the fluidity of a developer and can stably retain charging performance to a toner. SOLUTION: The magnetic carrier 2 comprises a carrier core material 2a having a shape factor (SF-1) of 100-130 and a coating layer 2b comprising a resin composition for coating containing a coating resin and an aminosilane coupling agent. A coating amount of the resin composition to the carrier core material 2a is ≤0.75 pt.wt. based on 100 pts.wt. of the carrier core material 2a, and a content of the aminosilane coupling agent to the coating resin is ≤2.5 wt.%. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种长期在实际机器中使用的载体，其抑制显影剂的流动性的劣化并且可以稳定地保持对调色剂的充电性能。 磁性载体2包括具有100-130的形状因子（SF-1）的载体芯材2a和包含含有涂料树脂和氨基硅烷偶联剂的涂料用树脂组合物的涂层2b。 载体芯材2a的树脂组合物的涂布量为≤0.75重量份。 基于100重量 的载体芯材2a，并且氨基硅烷偶联剂对涂布树脂的含量≤2.5重量％。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010015066A

公开(公告)日：2010-01-21

申请号：JP2008176385

申请日：2008-07-04

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： WADA OSAMU ,  KAMOTO TAKANORI ,  IWAMATSU TADASHI ,  YOSHIOKA NOBUYUKI ,  HIRAKAWA HIROYUKI ,  MUTO YOSHINORI ,  HARA TAKASHI ,  KANDA HIROFUMI ,  ICHII CHIKAO

IPC: G03G9/10 ,  G03G9/08 ,  G03G9/113

CPC classification number: G03G9/1136 ,  G03G9/08755 ,  G03G9/09716 ,  G03G9/09725 ,  G03G9/1075 ,  G03G9/1139

Abstract: PROBLEM TO BE SOLVED: To provide a resin coated carrier for stably charging toner with an external additive of a large grain diameter added thereto for a long time, a two-component developer containing the carrier, and a developing device and image forming apparatus for forming a high quality image with no fog for a long time using the two-component developer. SOLUTION: The resin coated carrier is used with a toner in which an external additive having an average primary particle size of 50 nm or more is added to a toner particle, and has a carrier core and a resin coating layer on the surface of the carrier core. In the resin coated carrier, the following expression (1) is satisfied: 0.5≤-logä(A/C)/(B/C)}≤2.5 wherein A represents a volume resistance value (Ω/cm) of the resin coated carrier in an electric field of 1000 V/cm that is obtained by conducting a stirring test, B represents a volume resistance value of the resin coated carrier in an electric field of 1000 V/cm before the stirring test, and C represents a volume resistance value (Ω/cm) of the carrier core in an electric field of 1000 V/cm. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种树脂涂布载体，用于长时间加入其中的大粒径外部添加剂的调色剂稳定地充电，含有载体的双组分显影剂以及显影装置和图像形成 使用双组分显影剂长时间形成高质量图像的装置。 ＆lt; P＆gt;解决方案：将树脂涂布载体与调色剂一起使用，其中将平均一次粒径为50nm以上的外部添加剂添加到调色剂颗粒中，并且在表面上具有载体芯和树脂涂层 的载体核心。 在树脂涂布载体中，满足以下表达式（1）：0.5≤-logä（A / C）/（B / C）}≤2.5其中A表示树脂涂布载体的体积电阻值（Ω/ cm） 在通过搅拌试验得到的1000V / cm的电场中，B表示在搅拌试验前的1000V / cm的电场中的树脂被覆载体的体积电阻值，C表示体积电阻值 （Ω/ cm）的载流子芯在1000V / cm的电场中。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2010002867A

公开(公告)日：2010-01-07

申请号：JP2008163724

申请日：2008-06-23

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KANDA HIROFUMI ,  IWAMATSU TADASHI

IPC: G03G15/02

Abstract: PROBLEM TO BE SOLVED: To obtain an electrification controller, an electrifying device and an image forming apparatus by which a photoreceptor is efficiently electrified.
SOLUTION: The electrifying device 1 includes an electron emission element 2 and the electrification controller 3. The electrification controller 3 controls an electrified amount of the photoreceptor 12 electrified by the electron emitted from the electron emission element 2 in accordance with applied voltage. The electrification controller 3 includes measuring means 4 and 5 measuring a current amount of the electron emitted from the electron emission element 2, and a control part 7 controlling voltage applied to the electron emission element 2 so that the current amount of the electron emitted from the electron emission element 2 may be constant based on measured results from the measuring means 4 and 5. Thus, the photoreceptor 12 is efficiently electrified by controlling the current amount of the electron emitted from the electron emission element 2 in real time.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了获得带电控制器，充电装置和通过其有效地带电感光体的图像形成装置。 充电装置1包括电子发射元件2和带电控制器3.充电控制器3根据施加的电压控制由电子发射元件2发射的电子带电的感光体12的带电量。 带电控制器3包括测量从电子发射元件2发射的电子的电流量的测量装置4和5;以及控制部分7，控制施加到电子发射元件2的电压，使得从电子发射元件2发射的电子的电流量 电子发射元件2可以基于来自测量装置4和5的测量结果而恒定。因此，通过实时控制从电子发射元件2发射的电子的电流量，感光体12有效地充电。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009020470A

公开(公告)日：2009-01-29

申请号：JP2007185028

申请日：2007-07-13

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KANDA HIROFUMI ,  NISHIO SHIGERU ,  IWAMATSU TADASHI

IPC: G03G15/02

Abstract: PROBLEM TO BE SOLVED: To provide a charging device capable of suppressing the deterioration of a body (e.g., a photoreceptor) to be charged or the device components near the body caused by ozone or NOx, and to provide an image forming apparatus using the charging device.
SOLUTION: The housing 3 of the charging device 1 has a first opening 8 and a second opening 9. In relation to a discharge electrode 2 as a reference, which is disposed in the housing 3, the first opening 8 is disposed in the direction in which the body 6 to be charged is located. In relation to the discharge electrode 2 as the reference, the second opening 9 is disposed in a direction different from the direction in which the body 6 to be charged is located.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够抑制被充电的身体（例如，感光体）或由臭氧或NOx引起的身体附近的器件部件的劣化的充电装置，并且提供图像形成装置 使用充电装置。 解决方案：充电装置1的壳体3具有第一开口8和第二开口9.关于放置在壳体3中的放电电极2，第一开口8设置在 被充电体6的方向。 关于放电电极2作为基准，第二开口9设置在与被充电体6所在的方向不同的方向上。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2006010853A

公开(公告)日：2006-01-12

申请号：JP2004185186

申请日：2004-06-23

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： HIRAKAWA HIROYUKI ,  IWAMATSU TADASHI

IPC: G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a developing device capable of stably obtaining excellent image quality even when an environmental condition is varied. SOLUTION: The developing device is equipped with a developing roller 3 carrying two-component developer composed of magnetic carrier and toner adhering to the magnetic carrier by electrostatic force in a developer supply area 9 by magnetic force and also feeding it to a developing nip 10 on a downstream side being a developing position for an electrostatic latent image formed on an electrostatic latent image carrier 2. The developing device includes a toner sorting roller 11 removing faultily electrified toner from the developer carried on the developing roller 3 to an area on a more upstream side than the developing nip 10 and more downstream side than the developer supply area 9. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 解决的问题：提供即使在环境条件变化时也能够稳定地获得优异的图像质量的显影装置。 解决方案：显影装置配备有承载由磁性载体构成的双组分显影剂的显影辊3和通过静电力在显影剂供应区域9中通过磁力粘附到磁性载体上的调色剂，并将其馈送到显影剂 作为形成在静电潜像载体2上的静电潜像的显影位置的下游侧的压区10，该显影装置包括：调色剂分选辊11，将显影辊3上承载的显影剂的故障带电调色剂除去到 比显影辊隙10更多的上游侧和比显影剂供应区域9更下游侧。更重要的是：（C）2006，JPO＆NCIPI

公开(公告)号：JP2005005205A

公开(公告)日：2005-01-06

申请号：JP2003169466

申请日：2003-06-13

Applicant: Nobuyoshi Koshida ,  Sharp Corp ,  シャープ株式会社 ,  信義 越田

Inventor： HIRAKAWA HIROYUKI ,  IWAMATSU TADASHI ,  KOSHIDA NOBUYOSHI

IPC: G03G15/02 ,  G03G13/02 ,  H01J1/312 ,  H01J29/04 ,  H01T23/00

CPC classification number: G03G15/02

Abstract: PROBLEM TO BE SOLVED: To provide an electron emission device capable of stably driving for a long period, an electrifying device using the emission device and its charging method. SOLUTION: An electron emission device 10 has a semiconductor layer 4 formed between a first and a second electrodes 6, 2, and includes an electron emission element 11 of which at least a part of the surface of the layer 4 at the first electrode 6 side is made porous layer 5. The electrifying device 1 uses the emission device 10 having a power supply 20 alternately impressing a positive voltage enabling to emit electron, and a negative voltage having an reverse polarity of the positive voltage. The electrifying method alternately impresses positive and negative voltages on the first electrode 6 of the emission device 10. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 解决的问题：提供能够长时间稳定驱动的电子发射装置，使用该发射装置的充电装置及其充电方法。 解决方案：电子发射器件10具有形成在第一和第二电极6和2之间的半导体层4，并且包括电子发射元件11，其中第一层4的表面的至少一部分 电极6侧为多孔层5.充电装置1使用具有电源20的发射装置10交替地施加能够发射电子的正电压和具有与正电压相反极性的负电压。 电气化方法在发射装置10的第一电极6上交替地施加正电压和负电压。版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2004265603A

公开(公告)日：2004-09-24

申请号：JP2003006176

申请日：2003-01-14

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： IWAMATSU TADASHI ,  HIRAKAWA HIROYUKI

IPC: H01J9/02 ,  G03G15/02

CPC classification number: G03G15/02

Abstract: PROBLEM TO BE SOLVED: To provide an electron emission system that cleans fine particle on the thin film of the upper electrode surface of an electron emission device by a noncontact method. SOLUTION: The electron emission system includes a lower electrode 2, an upper electrode 5 consisting of a thin film, and a semiconductor layer 4 formed between the lower electrode and the upper electrode. The system further includes the electron emission device 1 of which surface of the upper electrode 5 is exposed to an outside space, an opposed electrode 21 provided so that it may be opposed to the upper electrode 5 with the outside space therebetween, a fine particle charging voltage control unit 22 that applies a voltage to electrify the fine particles adhered to the surface of the upper electrode 5 between the upper electrode 5 and the lower electrode 2, and a flying voltage control unit 23 that applies a voltage to fly the charged fine particles from the surface of the upper electrode 5 between the upper electrode 5 and the opposed electrode 21, wherein the fine particles charging voltage control unit is operated to electrify the adhered corpuscles, while the flying voltage control unit is operated to fly the charged corpuscles toward the opposed electrode 21. COPYRIGHT: (C)2004,JPO&NCIPI

公开(公告)号：JP2004054029A

公开(公告)日：2004-02-19

申请号：JP2002212703

申请日：2002-07-22

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： IWAMATSU TADASHI ,  HIRAKAWA HIROYUKI ,  AZUMA NOBUYUKI ,  MUTO YOSHINORI

IPC: G02F1/167

Abstract: PROBLEM TO BE SOLVED: To enable stable display operation having a simple structure utilizing an interfacial electrokinetic phenomenon. SOLUTION: Numbers of holes 7 are formed in a two layer porous film 4 interposed between a lower substrate 2 and an upper substrate 3 and each pore 7 is filled with a transmissive liquid 8 and fine particles 9. When voltage is applied between an upper electrode 6 and a lower electrode 5, movement of the fine particles 9 based on electrophoresis is generated. When the position of the fine particles 9 is on the side of an upper layer transparent porous film 4a, white display is performed and when the position of the fine particles 9 is on the side of a lower layer black porous film 4b, black display is performed. When the porous film of the lower layer is constituted of periodically repetitive three primary colors of RGB or a color filter is disposed on the upper transparent substrate 3, color display can be also performed. Bubble occluding fine particles and a bubble itself can be also used. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2012083389A

公开(公告)日：2012-04-26

申请号：JP2010227065

申请日：2010-10-06

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： WADA OSAMU ,  KAMOTO TAKANORI ,  IMURA YASURO ,  IWAMATSU TADASHI

IPC: G03G9/113 ,  G03G9/08 ,  G03G9/107

Abstract: PROBLEM TO BE SOLVED: To provide a resin coated carrier capable of stably charging a toner with an external additive having a large particle diameter externally added thereto for a long period of time, and to provide a two-component developer.SOLUTION: A resin coated carrier 2 is used together with a toner 3 to which a plurality of kinds of external additives 3a having different average primary particle diameters are externally added, in which at least one kind of external additive 3a in the plurality of kinds of external additives 3a has an average primary particle diameter of 50 nm or more. The carrier comprises a carrier core material 2a and a resin coating layer 2b formed on the surface of the carrier core material 2a. The resin coated layer 2b comprises a coating resin and charging assistant fine particles 2c. The charging assistant fine particles 2c form projections 2d in the resin coating layer 2b, comprise a specified ferrite, and have an average primary particle diameter which is larger than the maximum of the average primary particle diameters of the respective plurality of kinds of external additives 3a and which is 0.2 μm or more and 2.0 μm or less.

Abstract translation: 要解决的问题：提供一种能够长时间地从外部添加其外部添加剂的外部添加剂稳定地向调色剂充电的树脂涂布载体，并提供双组分显影剂。 解决方案：树脂涂布载体2与调色剂3一起使用，其中外部添加了具有不同平均一次粒径的多种外部添加剂3a，其中多种外部添加剂中的至少一种 各种外部添加剂3a的平均一次粒径为50nm以上。 载体包括载体芯材2a和形成在载体芯材2a的表面上的树脂涂层2b。 树脂涂层2b包括涂覆树脂和带电辅助微粒2c。 充电助剂微粒2c在树脂被覆层2b中形成突起2d，包含规定的铁素体，平均一次粒径大于各种外部添加剂3a的平均一次粒径的最大值 并且为0.2μm以上且2.0μm以下。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2010272260A

公开(公告)日：2010-12-02

申请号：JP2009121467

申请日：2009-05-19

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： IMURA YASURO ,  HIRAKAWA HIROYUKI ,  NAGAOKA AYAE ,  IWAMATSU TADASHI

IPC: H01J1/312 ,  G03G15/02 ,  G21K1/00 ,  G21K5/04 ,  H01J7/24 ,  H01J9/02 ,  H01J19/24 ,  H01J31/12

Abstract: PROBLEM TO BE SOLVED: To provide an electron emitting element capable of obtaining a stable and satisfactory amount of electron emission by securing a large number of routes for a current flowing from an electrode substrate to an electron accelerating layer. SOLUTION: The electron accelerating layer 4 of this electron emitting element 1 contains insulator particulates 5 and conductive particulates 6a each having an average particle diameter smaller than that of the insulator particulate 5, and has a conductive particulate layer 16 containing conductive particulates 6b each having an average particle diameter smaller than that of the insulator particles 5 between the electron accelerating layer 4 and the electrode substrate 2. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种电子发射元件，通过确保用于从电极基板流向电子加速层的电流的大量路线，能够获得稳定和令人满意的电子发射量。 解决方案：该电子发射元件1的电子加速层4包含平均粒径小于绝缘体颗粒5的绝缘体颗粒5和导电颗粒6a，并且具有包含导电颗粒6b的导电颗粒层16 每个平均粒径小于电子加速层4和电极基片2之间的绝缘体颗粒5的平均粒径。（C）2011年，JPO和INPIT