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1. 发明授权

EP2605074B1 Developing device, image forming apparatus and method of controlling developing device 有权
标题翻译：显影装置，图像形成装置和控制显影装置的方法
公开(公告)号：EP2605074B1
公开(公告)日：2018-05-02
申请号：EP12196689.9
申请日：2012-12-12
申请人： Kyocera Document Solutions Inc.
发明人： Fujihara, Kensuke , Watanabe, Akihiro , Fuchimoto, Nobuyuki
IPC分类号： G03G15/06
CPC分类号： G03G15/0907 , G03G15/065
摘要： A developing device includes a development roller (11), a magnetic roller (12), a transformer (83), a switching portion (81), output control portion (80) and a capacitor (82). The development roller (11) is opposite a photoconductor drum (42). The magnetic roller (12) performs, with a magnetic brush, the supply of a toner to the development roller (11) and the removal of the toner. The transformer (83) generates an alternating-current voltage applied to the development roller (11). The switching portion (81) passes and interrupts a current to the transformer (83). The output control portion (80) stepwise changes, when a duty ratio in switching is changed, the duty ratio a plurality of times from a first duty ratio to a second duty ratio. The capacitor (82) has one end connected to the transformer (83) and the other end connected to the switching portion (81).

2. 发明公开

EP2787393A3 Image forming apparatus 有权
公开(公告)号：EP2787393A3
公开(公告)日：2017-10-04
申请号：EP14161946.0
申请日：2014-03-27
申请人： Ricoh Company, Ltd.
发明人： Suzuki, Shingo , Kaneko, Satoshi , Hirai, Shuji , Kudo, Koichi , Yamane, Jun , Kato, Shinji
IPC分类号： G03G15/06 , G03G15/00
CPC分类号： G03G15/5025 , G03G15/065 , G03G15/5058
摘要： An image forming apparatus (100A to 100C) includes an image carrier; an image forming unit; a processor (37) for controlling the image forming unit according to a predetermined image forming condition setting data; an image density sensor (30); a reference rotary position detector (18, 71); an image density fluctuation data acquisition unit to obtain an image density fluctuation data of more than one circumferential length of the rotary member (2, 5) with reference to the reference rotary position detected by the reference rotary position detector based on the toner pattern formed on the image carrier detected by the image density sensor; and a correction data generator to generate a correction data to correct a reference image forming condition setting data with a correction amount corresponding to each rotary position of the rotary member (2, 5Ya, 5Ma, 5Ca, 5Ka) to thus reduce the image density fluctuation.

3. 发明公开

EP3195063A1 DEVELOPING DEVICE AND IMAGE FORMING APPARATUS 有权
标题翻译：开发设备和图像形成设备
公开(公告)号：EP3195063A1
公开(公告)日：2017-07-26
申请号：EP15842282.4
申请日：2015-08-31
申请人： Ricoh Company, Ltd.
发明人： IWATSUKI, Hitoshi , SAKATA, Koichi , TOHMATSU, Hiroshi , TANO, Toyoaki , MASHIKO, Kenichi , TAKII, Mariko , KISHIDA, Hiroyuki , MURASAWA, Yoshihiro , KONDOH, Keinosuke , KOIKE, Toshio , TAKAHASHI, Yutaka
IPC分类号： G03G15/09 , G03G9/10 , G03G9/113 , G03G15/06 , G03G15/08
CPC分类号： G03G15/0928 , G03G9/1136 , G03G9/1139 , G03G15/065 , G03G15/0907
摘要： A developing device, including: a developer containing toner and carrier; and developer bearer configured to have surface thereof bear the developer and endlessly move, and to develop latent image over surface of latent image bearer by supplying toner in developer to latent image in developing region facing the latent image bearer, wherein carrier contains fine particles, value X in volume resistivity R (=10X) (Ω·cm) of carrier is 11.5-16.0, developer bearer includes: magnetic field generating unit including a plurality of magnetic poles; and developing sleeve having a cylindrical shape enclosing magnetic field generating unit, and configured to bear developer over outer circumferential surface of cylindrical shape by magnetic force of the magnetic field generating unit and perform surface moving by rotating relative to developing device body, and developing device includes developing sleeve voltage applying unit configured to apply AC component-containing voltage to developing sleeve.
摘要翻译：一种显影装置，包括：含有调色剂和载体的显影剂; 以及显影剂承载体，其构造为使其表面承载显影剂并且无限移动，并且通过将显影剂中的调色剂供给到面向潜像承载体的显影区域中的潜像而在潜像承载体的表面上显影潜像，其中载体包含微粒，载体的体积电阻率R（= 10X）（Ω·cm）中的X为11.5-16.0，显影剂载体包括：包括多个磁极的磁场产生单元; 以及显影套筒，其具有包围磁场产生单元的圆筒形状，并且被配置为通过所述磁场产生单元的磁力将显影剂承载在圆筒形状的外周面上，并且通过相对于显影装置本体旋转来执行表面移动，并且显影装置包括显影套筒电压施加单元，其被配置为向显影套筒施加包含AC分量的电压。

4. 发明授权

EP1914603B1 Image forming apparatus 有权
公开(公告)号：EP1914603B1
公开(公告)日：2016-12-14
申请号：EP07118801.5
申请日：2007-10-18
申请人： Canon Kabushiki Kaisha
发明人： Yamamoto, Takeshi , Baba, Yoshinobu , Haraguchi, Manami , Kubo, Kenta
IPC分类号： G03G15/06
CPC分类号： G03G15/065 , G03G2215/0602 , G03G2215/0607 , G03G2215/0634

5. 发明公开

EP3088960A1 IMAGE FORMING DEVICE 审中-公开
标题翻译：成像装置
公开(公告)号：EP3088960A1
公开(公告)日：2016-11-02
申请号：EP14881140.9
申请日：2014-12-15
申请人： Ricoh Company, Ltd.
发明人： KANEKO, Satoshi , KATO, Shinji , HIRAI, Shuji
IPC分类号： G03G15/00 , G03G21/00
CPC分类号： G03G15/0824 , G03G15/065 , G03G15/5041 , G03G15/5054
摘要： An image forming device forms a toner image based on image data on a surface of a photoconductor drum whose surface moves by using a charging unit, an optical writing unit, a developing device, and the like, and finally transfers the formed toner image to a recording paper so as to form an image. A current detection circuit (31) detects developing current that indicates a toner adhesion amount of the toner image formed based on the image data. Image density unevenness in the image formed based on the image data is detected based on the detected developing current and the image data.
摘要翻译：图像形成装置基于通过使用充电单元，光学写入单元，显影装置等在其表面移动的感光鼓的表面上的图像数据形成色调剂图像，并最终将形成的色调剂图像转印到记录纸张以形成图像。电流检测电路（31）检测表示基于图像数据形成的调色剂图像的调色剂附着量的显影电流。基于检测到的显影电流和图像数据检测基于图像数据形成的图像中的图像浓度不均匀性。

6. 发明公开

EP3043210A1 IMAGE FORMING DEVICE 审中-公开
标题翻译：成像装置
公开(公告)号：EP3043210A1
公开(公告)日：2016-07-13
申请号：EP14841894.0
申请日：2014-09-03
申请人： Canon Kabushiki Kaisha
发明人： OKADA, Noriyuki
IPC分类号： G03G15/00 , G03G15/08
CPC分类号： G03G15/065 , G03G15/0849 , G03G15/09
摘要： An image forming apparatus includes an image bearing member configured to carry an image; a developing device configured to develop a latent image formed by exposing the image bearing member electrically charged to light, with a developer including toner and carrier; a sensor configured to detect information relating to an amount of magnetization of the developer per unit volume in the developing device; and a controller configured to control an image forming condition so as to change, on the basis of a detection result of the sensor, a development contrast which is a potential difference between an image portion potential of a maximum image density in the latent image and a development DC bias potential applied to the developing device, wherein the controller controls the image forming condition on the basis of the detection result of the sensor such that when the amount of magnetization of the developer per unit volume in the developing device is a first predetermined value, the development contrast is smaller than that when the amount is a second predetermined value which is larger than the first predetermined value.
摘要翻译：一种图像形成设备，包括：图像承载部件，被构造为承载图像; 显影装置，所述显影装置被配置为利用包括调色剂和载体的显影剂来显影通过将所述图像承载部件暴露在光下而形成的潜像; 传感器，被配置为检测与显影装置中每单位体积的显影剂的磁化量有关的信息; 以及控制器，被配置为控制图像形成条件以便基于传感器的检测结果改变显影对比度，该显影对比度是潜像中的最大图像浓度的图像部分电位与潜像之间的电位差其中，所述控制器基于所述传感器的检测结果来控制所述图像形成条件，使得当所述显影装置中每单位体积的所述显影剂的磁化量是第一预定值时显影对比度小于当该量是大于第一预定值的第二预定值时的显影对比度。

7. 发明公开

EP2905659A3 Developing device and image forming apparatus and process cartridge incorporating same 有权
标题翻译：显影装置及图像形成装置以及处理卡盒
公开(公告)号：EP2905659A3
公开(公告)日：2015-09-02
申请号：EP15152870.0
申请日：2015-01-28
申请人： Ricoh Company, Ltd.
发明人： Kondoh, Keinosuke , Tsuda, Kiyonori , Takahashi, Yutaka , Mikuniya, Kentaro , Koike, Toshio , Shiraishi, Emiko
IPC分类号： G03G15/06 , G03G15/09
CPC分类号： G03G15/0921 , G03G15/065 , G03G15/0907
摘要： A developing device (5) includes a developer bearer (50) to carry, by rotation, developer including toner and magnetic carrier to a development range facing a latent image bearer (1) to bear a latent image. The developer bearer (50) includes a magnetic field generator (55) having multiple magnetic poles (P1, P2, P3, P4, P5) and a cylindrical developing sleeve (51) to rotate and bear developer on an outer circumferential surface thereof with magnetic force of the magnetic field generator (55) disposed inside the developing sleeve (51). The developing sleeve (51) receives development voltage including an AC component having a frequency of 2.0 kHz or lower, and a duty ratio of a component having a polarity opposite a toner normal charge polarity of the AC component is within a range from 4% to 20%.

8. 发明公开

EP1962144A3 Image forming apparatus 审中-公开
标题翻译：成像设备
公开(公告)号：EP1962144A3
公开(公告)日：2015-06-17
申请号：EP08150903.6
申请日：2008-01-31
申请人： Canon Kabushiki Kaisha
发明人： Yamamoto, Takeshi , Haraguchi, Manami , Kubo, Kenta , Baba, Yoshinobu , Ishigami, Koh
IPC分类号： G03G15/00 , G03G5/04 , G03G15/06 , G03G15/08
CPC分类号： G03G15/065 , G03G5/04 , G03G15/0806 , G03G15/5037 , G03G15/5062 , G03G2215/00037 , G03G2215/0607
摘要： thickness, εt: a relative permittivity of the toner layer, εd: a relative permittivity of the drum, ε0: a vacuum permittivity, Dtmax: a transmission density in a maximum density image portion on the paper after fixation, Dt 0.1 : a transmission density in an image on the paper when the toner bearing amount on the paper after fixation is 0.1 mg/cm 2 , and λ: a transfer efficiency of the toner, α = Dt ⁢ max - D ⁢ t 0.1 λ × ( M S ) L - 0.1 , and β = 1 / ( Q / M ⁢ ) L .
摘要翻译：厚度，εt：调色剂层的相对介电常数，εd：鼓的相对介电常数，ε0：真空介电常数，Dtmax：定影后纸上最大密度图像部分的透射密度，Dt0.1：透射率当定影后的纸张上的调色剂承载量为0.1mg / cm 2时，纸张上的图像中的浓度为λ，调色剂的转印效率为α= Dtmax-Dtt0.1λ×（MS）L- 0.1，并且β= 1 /（Q / M）L。

9. 发明公开

EP2871529A1 DEVELOPING CARTRIDGE 有权
标题翻译： ENTWICKLERKARTUSCHE
公开(公告)号：EP2871529A1
公开(公告)日：2015-05-13
申请号：EP12880728.6
申请日：2012-11-29
申请人： Brother Kogyo Kabushiki Kaisha
发明人： FUJII, Yasumasa
IPC分类号： G03G15/08
CPC分类号： G03G15/065 , G03G15/0806 , G03G15/0808 , G03G15/0855 , G03G15/0865 , G03G21/1652 , G03G21/1676 , G03G2221/166
摘要： A developing cartridge includes a casing, a developer-carrying member, a supply member, a developing electrode, a supply electrode, and an insulating member. The casing is configured to accommodate therein developer. The developer-carrying member is configured to rotate about a rotational axis and carry the developer thereon. The supply member is configured to supply the developer to the developer-carrying member. The developing electrode is configured to be electrically connected to the developer-carrying member. The supply electrode is configured to be electrically connected to the supply member. The insulating member insulates the developing electrode and the supply electrode with each other. The developing electrode, the insulating member, and the supply electrode are overlapped in this order in an axial direction of the rotational axis.
摘要翻译：显影盒包括壳体，显影剂承载构件，供给构件，显影电极，供给电极和绝缘构件。套管配置成容纳其中的显影剂。显影剂承载构件构造成围绕旋转轴线旋转并在其上携带显影剂。供应构件被构造成将显影剂供应到显影剂承载构件。显影电极构造成电连接到显影剂承载构件。供电电极被构造成电连接到供应构件。绝缘构件将显影电极和供电电极彼此绝缘。显影电极，绝缘构件和供电电极在旋转轴线的轴向上依次重叠。

10. 发明公开

EP2565723A3 Cartridge having coupling member and detection body 有权
标题翻译：墨盒偶联剂和Erkennunngskörper
公开(公告)号：EP2565723A3
公开(公告)日：2014-11-05
申请号：EP12182299.3
申请日：2012-08-30
申请人： Brother Kogyo Kabushiki Kaisha
发明人： Itabashi, Nao , Kamimura, Naoya
IPC分类号： G03G21/18
CPC分类号： G03G15/0889 , G03G15/065 , G03G15/0865 , G03G21/1676 , G03G21/1864 , G03G21/1896
摘要： In a cartridge, a housing has a developer accommodating portion and includes a first side wall and a second side wall. A coupling member is disposed at a position opposite to the developer accommodating portion with respect to the first side wall. A detection body is disposed at a position opposite to the developer accommodating portion with respect to the second side wall. A first driving force transmission member is positioned at the same side with the coupling member with respect to the first side wall, and transmits driving force from the coupling member to a rotating member. A second driving force transmission member is positioned at the same side with the detection body with respect to the second side wall, and transmits driving force from the rotating member to the detection body.

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