公开(公告)号：JP2010020172A

公开(公告)日：2010-01-28

申请号：JP2008181759

申请日：2008-07-11

Applicant: Sharp Corp ,  シャープ株式会社

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

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

Abstract: PROBLEM TO BE SOLVED: To solve the following problems: in an environment in which a two-component developer is subjected to thermal and mechanical stress with time and in the main unit of a copying machine, fluidity of the developer deteriorates significantly and density unevenness of an output image occurs; and in printing on many sheets, the fluidity of the developer deteriorates, density unevenness due to insufficient conveyance occurs and an obtained output image degrades significantly. SOLUTION: There is provided an electrophotographic two-component developer satisfying an expression (1): 10.4≤log((C/B)/(A×T))≤17.9, wherein A represents the wax material content (wt.%) of a toner therein; T represents toner concentration (wt.%) of the two-component developer; B represents volume resistance (Ωcm) of a carrier core material; and C represents a volume resistance (Ωcm) of a carrier. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 解决的问题为了解决以下问题：在双组分显影剂随时间受到热应力和机械应力的环境中，在复印机的主单元中，显影剂的流动性显着劣化，并且 出现输出图像的浓度不均匀; 并且在许多片材上印刷时，显影剂的流动性劣化，由于不充分的输送而导致的浓度不均匀性发生，并且获得的输出图像显着劣化。 解决方案：提供满足表达式（1）：10.4≤log（（C / B）/（A×T））≤17.9的电子照相双组分显影剂，其中A表示蜡材料含量（wt。 ％）的调色剂; T表示双组分显影剂的调色剂浓度（重量％）; B表示载体芯材的体积电阻（Ωcm）; C表示载体的体积电阻（Ωcm）。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009258384A

公开(公告)日：2009-11-05

申请号：JP2008107186

申请日：2008-04-16

Applicant: Sharp Corp ,  シャープ株式会社

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

IPC: G03G9/113 ,  G03G9/10

Abstract: PROBLEM TO BE SOLVED: To provide a carrier capable of improving stability of charging amount of toner and capable of maintaining high quality image formation for a long period of time.
SOLUTION: The carrier 1 includes a cover layer 3 on the surface of core material 2, wherein a shape factor (SF-1) of the core material 2 is ≥119, a proportion of the shape factor of the core material after forming the cover layer 3 to the shape factor of the core material 2 is in the range of ≥90% to ≤100%, a bridge resistance value upon agitation test is lowered by a change amount in the range of 0 to ≤1/10 with respect to the initial value under an electric field of 1,000 V/cm and, as the result, the high quality image formation can be maintained over a long period of time.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供能够提高调色剂的充电量的稳定性并能够长时间保持高质量图像形成的载体。 解决方案：载体1在芯材2的表面上包括覆盖层3，其中芯材2的形状因子（SF-1）≥119，芯材的形状因子的比例在 将覆盖层3形成为芯材2的形状因子的范围在≥90％〜≤100％的范围内，搅拌试验时的桥电阻值降低0〜≤1/ 10的范围内的变化量 相对于1000V / cm的电场下的初始值，结果可以长时间保持高质量的图像形成。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009164141A

公开(公告)日：2009-07-23

申请号：JP2009104413

申请日：2009-04-22

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KANDA HIROFUMI ,  IWAMATSU TADASHI ,  TAMURA HISAHIRO ,  HIRAKAWA HIROYUKI ,  ICHII CHIKAO

IPC: H01J1/312 ,  H01J7/24 ,  H01J9/02 ,  H01J19/24 ,  H01J31/12

CPC classification number: H01J1/312 ,  B82Y10/00 ,  G02F2001/133625 ,  G03G15/0233 ,  G03G15/0258 ,  H01J63/02

Abstract: PROBLEM TO BE SOLVED: To provide an electron emission element attaining stable electron emission both in a vacuum and the atmosphere and suppressing generation of harmful substances such as ozone and NO x incidental to electron emission. SOLUTION: The electron emission element 1' has an electron accelerating layer 4' between a substrate 28 and an upper electrode 3. The electron accelerating layer 4' contains highly anti-oxidative metal fine grains 6 and an insulator substance 5' larger than the metal fine grain in grain size. The insulator substance 5' is layered on a substrate and has a plurality of openings 51 formed to pass through the thickness of the layer. The metal fine grains 6 are contained in the openings 51. The electron emission element 1' emits electrons stably both in a vacuum and the atmosphere, discharges no electricity and hence hardly generates the harmful substances such as ozone and NO x and is free from oxidative deterioration. Thus, the electron emission element 1' has a long service life and achieves stable, long-lasting and continuous operation even in the atmosphere. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供在真空和大气中获得稳定的电子发射的电子发射元件，并抑制与电子发射有关的臭氧和NO x 等有害物质的产生。 解决方案：电子发射元件1'在基板28和上电极3之间具有电子加速层4'。电子加速层4'含有高度抗氧化金属细晶粒6和较大的绝缘体物质5' 比金属细晶粒粒度大。 绝缘体5'层叠在基板上，并具有形成为穿过层的厚度的多个开口51。 金属细晶粒6包含在开口51中。电子发射元件1'在真空和大气中稳定地发射电子，不产生电，因此几乎不产生臭氧和NO x < SB>并且没有氧化劣化。 因此，电子发射元件1'具有长的使用寿命，即使在大气中也可以实现稳定，持久和连续的操作。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2009146891A

公开(公告)日：2009-07-02

申请号：JP2008295722

申请日：2008-11-19

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KANDA HIROFUMI ,  IWAMATSU TADASHI ,  TAMURA HISAHIRO ,  HIRAKAWA HIROYUKI ,  ICHII CHIKAO

IPC: H01J1/312 ,  B01J19/12 ,  G02F1/13357 ,  H01J9/02 ,  H01J29/04 ,  H01J31/12 ,  H01J63/06

CPC classification number: H01J1/312 ,  B82Y10/00 ,  G02F2001/133625 ,  G03G15/0233 ,  G03G15/0258 ,  H01J63/02

Abstract: PROBLEM TO BE SOLVED: To provide an electron emission element enabling stable electron emission not only in vacuum but also in atmospheric pressure and suppressing the occurrence of harmful substances such as ozone and NOx accompanied with the electron emission. SOLUTION: The electron emission element 1 includes a particulate layer 4 between a substrate 2 and an upper part electrode 3, and the particulate layer 4 contains metal particulates 6 having high antioxidant power and particulates 5 of an insulator which have larger sizes than that of the metal particulates 6. In the electron emission element 1, electrons can be emitted stably not only in the vacuum but also in the atmospheric pressure, the harmful substances such as ozone and NOx are almost not formed since discharge is not accompanied, and oxidation deterioration does not occur. For that reason, the electron emission element 1 has a long service-life, and can carry out continuous operation for a long time even in the atmospheric pressure. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 解决问题：提供不仅在真空中而且在大气压下能够稳定发射电子的电子发射元件，并且抑制伴有电子发射的臭氧和NOx等有害物质的发生。 解决方案：电子发射元件1包括在基底2和上部电极3之间的颗粒层4，并且颗粒层4含有具有高抗氧化能力的金属微粒6和绝缘体颗粒5，其尺寸比 在电子发射元件1中，电子不仅可以在真空中而且在大气压下稳定地发射，所以不伴随着排放不会形成诸如臭氧和NOx的有害物质，并且 不会发生氧化劣化。 因此，电子发射元件1的使用寿命长，即使在大气压下也能够长时间地进行连续的动作。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008298891A

公开(公告)日：2008-12-11

申请号：JP2007142621

申请日：2007-05-29

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： KAMOTO TAKANORI ,  IWAMATSU TADASHI ,  YOSHIOKA NOBUYUKI ,  MUTO YOSHINORI ,  HIRAKAWA HIROYUKI ,  HARA TAKASHI

IPC: G03G9/097 ,  G03G9/107 ,  G03G9/113 ,  G03G15/08

CPC classification number: G03G9/1075 ,  G03G9/1131 ,  G03G9/1136

Abstract: PROBLEM TO BE SOLVED: To obtain a carrier that can suppress decrease in a charge amount of toner containing at least a binder resin and an organic colorant, and that is stable and capable of forming a high definition image of high picture quality with extremely little image defect such as fog. SOLUTION: The carrier 2 is to be used for a two-component developer containing the carrier 2 and a toner 3 containing at least a binder resin and an organic colorant. The carrier 2 has a coating layer 2b on the surface of a core material 2a, the coating layer containing conductive particles and a charge control agent that controls charges in the same polarity as the charges controlled by a charge control agent included in the toner 3. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了获得能够抑制至少含有粘合剂树脂和有机着色剂的调色剂的电荷量的降低的载体，并且是稳定的并且能够形成具有高图像质量的高清晰度图像的载体 极少的图像缺陷如雾。 解决方案：载体2用于含有载体2的双组分显影剂和至少含有粘合剂树脂和有机着色剂的调色剂3。 载体2在芯材2a的表面上具有涂层2b，涂层含有导电颗粒和电荷控制剂，其控制与由调色剂3中包含的电荷控制剂控制的电荷相同极性的电荷。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008046303A

公开(公告)日：2008-02-28

申请号：JP2006221076

申请日：2006-08-14

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： NISHIO SHIGERU ,  IWAMATSU TADASHI ,  KANDA HIROFUMI

IPC: G03G15/02

Abstract: PROBLEM TO BE SOLVED: To provide a charging device that has a longer life and produces less ozone. SOLUTION: The charging device 31 of this digital copying machine applies a voltage V1 to a liquid 40 in the discharge nozzle, thereby causing electrostatic atomization such that charged fine liquid droplets 49 are sprayed onto the surface of a photoreceptor drum 30 from the discharge nozzle 44 and also the electrostatic atomization is accelerated by the supply of pressure to the liquid 40. This makes it possible to decrease the voltage V1 applied to the liquid 40 and also restrain corona discharge, thereby reducing ozone production. In addition, this is free from deterioration due to contact wear as in a charging roller or a charging brush. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供具有更长寿命并产生更少臭氧的充电装置。 解决方案：该数字复印机的充电装置31将电压V1施加到放电喷嘴中的液体40，由此引起静电雾化，使得带电的细液滴49从感光鼓30的表面喷射到 排出喷嘴44，并且通过向液体40供给压力也加速了静电雾化。这使得可以降低施加到液体40上的电压V1并且还抑制电晕放电，从而减少臭氧产生。 此外，由于与充电辊或充电刷中的接触磨损，其不会劣化。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007072144A

公开(公告)日：2007-03-22

申请号：JP2005258754

申请日：2005-09-07

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： HARA TAKASHI ,  IWAMATSU TADASHI

IPC: G03G9/113 ,  G03G9/10

Abstract: PROBLEM TO BE SOLVED: To achieve a longer lifetime with a simple configuration and to maintain higher image quality for a long period in high speed stirring and high speed developing.
SOLUTION: The two-component developer is composed by using a magnetic carrier 5A including a single core material 5AA formed by using microballoons etc., a resin binder 5AB dispersed with magnetic powder 5AC formed by using any among at least magnetite, hematite, ferrite, iron powder, etc., and a resin binder 5AB covering the surface of the core material 5AA.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：以简单的配置实现更长的使用寿命，并在高速搅拌和高速显影中长时间保持较高的图像质量。 解决方案：双组分显影剂通过使用包括通过使用微球等形成的单芯材料5AA的磁性载体5A构成，分散有由至少磁铁矿，赤铁矿中的任何一种形成的磁性粉末5AC的树脂粘合剂5AB ，铁素体，铁粉等，以及覆盖芯材5AA的表面的树脂粘合剂5AB。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006024475A

公开(公告)日：2006-01-26

申请号：JP2004202283

申请日：2004-07-08

Applicant: Sharp Corp ,  シャープ株式会社

Inventor： IWAMATSU TADASHI

IPC: H01T23/00 ,  A61L9/22 ,  F24F7/00 ,  G03G15/02

Abstract: PROBLEM TO BE SOLVED: To provide an ion generating apparatus capable of improving generating efficiency of ion, suppressing excessive discharge, and suppressing the generated quantity of ozone; and to provide an air conditioner and an image forming apparatus provided with the ion generating apparatus.
SOLUTION: The ion generating apparatus 1 is provided with a dielectric electrode 2 (first electrode) on a ceramic substrate 5, a dielectric layer 3 (dielectric film) provided with photoconductivity on the conductive electrode 2, a discharge electrode 4 (second electrode) on one part of the dielectric layer 3, a power source 6 applying voltage between the dielectric electrode 2 and the discharge electrode 4, and an optical static eliminator 11 (optical radiation equipment) radiating light on the dielectric layer 3.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 解决问题的方法：提供能够提高离子发生效率，抑制过量放电，抑制臭氧产生量的离子发生装置。 并且提供一种设置有离子产生装置的空调和图像形成装置。 解决方案：离子发生装置1在陶瓷基板5上设置有电介质电极2（第一电极），在导电电极2上设置有光导电性的电介质层3（电介质膜），放电电极4 电极），电介质电极2和放电电极4之间施加电压的电源6和在电介质层3上照射光的光学静电消除器11（光学辐射设备）。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2004327084A

公开(公告)日：2004-11-18

申请号：JP2003116091

申请日：2003-04-21

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

Inventor： IWAMATSU TADASHI ,  HIRAKAWA HIROYUKI ,  KOSHIDA NOBUYOSHI

IPC: G03G15/02 ,  H01J1/312 ,  H01J31/12

CPC classification number: G03G15/0291

Abstract: PROBLEM TO BE SOLVED: To provide an electron emission element and an image forming apparatus using the same, which can be operated stably even if the element is operated in the atmospheric pressure or in low vacuum. SOLUTION: In the electron emission element 11 in which a semiconductor layer 14 is formed between an upper electrode 16 and a lower electrode 13, an organic compound adsorbent layer 15 is formed by making the semiconductor layer 14 adsorb an organic compound on a semiconductor surface. The semiconductor layer 14 may be made of silicon or polysilicon and a part or a whole of it may be made porous. The organic compound to be adsorbed may be a non-cyclic hydrocarbon, a compound in which at least an aldehyde group is bonded to the non-cyclic hydrocarbon, or the non-cyclic hydrocarbon having unsaturated bond. COPYRIGHT: (C)2005,JPO&NCIPI

公开(公告)号：JP2003084560A

公开(公告)日：2003-03-19

申请号：JP2001276809

申请日：2001-09-12

Applicant: Sharp Corp ,  シャープ株式会社

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

IPC: G03G15/06 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a developing device capable of sufficiently supplying non- magnetic one-component toner without making a developer supply member in press-contact and friction with a developer carrier, and capable of stably obtaining a high density image since the stress to the toner and the secular deterioration of the toner are small. SOLUTION: By providing periodic conductive electrode patterns 21, 22... on the surface of the developer carrier 1 carrying the non-magnetic toner 15 through an insulating part and applying desired bias potential to the electrodes 21 and 22, electric field gradient is formed near the surface of the developer carrier 1, so that the toner 15 is stuck and fed onto the carrier 1 without needing a triboelectrification process.

Abstract translation: 要解决的问题：提供一种能够在不使显影剂供应构件与显影剂载体压接和摩擦的情况下充分供应非磁性单组分调色剂并且能够稳定地获得高密度图像的显影装置，因为应力 并且调色剂的长期劣化很小。 解决方案：通过在承载非磁性调色剂15的显影剂载体1的表面上通过绝缘部分提供周期性导电电极图案21,22，并向电极21和22施加期望的偏置电位，形成电场梯度 靠近显影剂载体1的表面，使得调色剂15被粘合并进料到载体1上，而不需要摩擦带电过程。