公开(公告)号：US07024141B2

公开(公告)日：2006-04-04

申请号：US10734292

申请日：2003-12-15

申请人： Nobutaka Takeuchi ,  Hajime Oyama ,  Hiromitsu Takagaki ,  Takayuki Koike

发明人： Nobutaka Takeuchi ,  Hajime Oyama ,  Hiromitsu Takagaki ,  Takayuki Koike

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

CPC分类号： G03G15/09 ,  G03G2215/0634

摘要： A method of developing a latent image formed on an image carrier with toner, including causing a developer carrier, which faces the image carrier and accommodates a magnet therein, to support a developer having a toner and a magnetic carrier supporting the toner and convey the developer to a developing zone between the developer carrier and the image carrier, and providing an apparent coating ratio M of a surface of the developer carrier coated with the developer. The coating ration M is, in a zone upstream of the developing zone in a direction of rotation of the developer carrier, expressed as M=αA2+β (%), where α denotes a coefficient of the coating ratio, A2 denotes an amount of developer for a unit area, β denotes a value determined by a powder characteristic of the developer for an apparent coating ratio calculated with A2=0, and the coating ratio M is between 90% and 120%.

摘要翻译： 一种利用调色剂在图像载体上形成潜像的方法，包括使面向图像载体的显影剂载体和容纳磁体的显影剂载体支撑着具有调色剂的显影剂和支撑调色剂的磁性载体并传送显影剂 到显影剂载体和图像载体之间的显影区域，并且提供涂覆有显影剂的显影剂载体的表面的表观涂布比M. 涂层比例M在显影剂载体的旋转方向的显影区上游区域中表示为M =αA2 +β（％），其中α表示涂布比的系数，A 2表示 显影剂单位面积的量，β表示由用A 2 = 0计算的表观涂布比例由显影剂的粉末特性确定的值，涂布比M在90％至120％之间。

公开(公告)号：US20060002744A1

公开(公告)日：2006-01-05

申请号：US11169807

申请日：2005-06-30

申请人： Katsuhiro Aoki ,  Hajime Oyama ,  Hiroshi Ikeguchi ,  Yasuo Miyoshi ,  Hiromitsu Takagaki

发明人： Katsuhiro Aoki ,  Hajime Oyama ,  Hiroshi Ikeguchi ,  Yasuo Miyoshi ,  Hiromitsu Takagaki

IPC分类号： G03G15/08

CPC分类号： G03G15/0805

摘要： A developer supplying device including a developer holding unit configured to hold a developer, a developer transfer device configured to electrostatically transfer the developer from the developer holding unit, and a charging member having holes piercing therethrough from the developer holding unit, to abrasively charge the developer by contacting the developer with walls of the holes while the developer is electrostatically transferred through the holes by the developer transfer device.

摘要翻译： 一种显影剂供应装置，包括构造成保持显影剂的显影剂保持单元，被配置为使显影剂从显影剂保持单元静电转印的显影剂转移装置和具有从显影剂保持单元穿过的孔的充电构件，以对显影剂 通过使显影剂与孔的壁接触，同时显影剂通过显影剂转印装置通过孔静电转印。

公开(公告)号：US5502552A

公开(公告)日：1996-03-26

申请号：US261976

申请日：1994-06-17

申请人： Naoki Iwata ,  Takeshi Saito ,  Hidetoshi Yano ,  Hiromitsu Takagaki ,  Kazuhiro Nishido ,  Ichiro Komuro ,  Shigeki Sawa ,  Nobuhiro Shima

发明人： Naoki Iwata ,  Takeshi Saito ,  Hidetoshi Yano ,  Hiromitsu Takagaki ,  Kazuhiro Nishido ,  Ichiro Komuro ,  Shigeki Sawa ,  Nobuhiro Shima

IPC分类号： G03G15/08 ,  G03G15/06

CPC分类号： G03G15/0818

摘要： In a developing device for an image forming apparatus, a developing roller has dielectric portions and conductive portions distributed regularly or irregularly over the surface thereof. The surfaces of the dielectric portions are smaller in height than the surfaces of the conductive portions. The difference in height is greater than one-half of the volumetric mean particle size of a toner. A charge opposite in polarity to a charge to be deposited on the toner is deposited on the dielectric portions. The dielectric portions, or recesses, each has a width more than three times as great as the volumetric mean particle size of the toner and a depth less than five times the volumetric particle size. The dielectric portions may be greater in height than the conductive portions and may be implemented as spiral grooves inclined more than 30 degrees relative to the axis of rotation of the developing roller. The developing roller may be moved at a higher linear velocity than a photoconductive drum.

摘要翻译： 在用于图像形成装置的显影装置中，显影辊具有电介质部分和导电部分规则地或不规则地分布在其表面上。 电介质部分的表面的高度比导电部分的表面小。 高度差异大于调色剂体积平均粒径的一半。 与沉积在调色剂上的电荷极性相反的电荷沉积在电介质部分上。 电介质部分或凹部各自具有的宽度是调色剂的体积平均粒度的三倍以上，并且深度小于体积粒径的五倍。 电介质部分的高度可以高于导电部分，并且可以被实现为相对于显影辊的旋转轴线倾斜大于30度的螺旋槽。 显影辊可以以比感光鼓更高的线速度移动。

公开(公告)号：US5467175A

公开(公告)日：1995-11-14

申请号：US172818

申请日：1993-12-27

申请人： Hiromitsu Takagaki ,  Nobuo Iwata ,  Koji Suzuki

发明人： Hiromitsu Takagaki ,  Nobuo Iwata ,  Koji Suzuki

IPC分类号： G03G15/08

CPC分类号： G03G15/0806

摘要： In a developing device for developing a latent image formed on an image carrier with a developer, a developer carrier conveys the developer deposited thereon to the image carrier. A developer driving section moves, in a position adjoining the developer carrier and where the developer is at least apt to aggregate, the developer such that the developer is loosened. A developer charging member deposits a predetermined amount of charge on the developer. The developer charging member is located downstream of the developer driving section with respect to the direction of rotation of the developer carrier and upstream of a developing position where the developer carrier faces the image carrier. The device is small size and inexpensive since it does not include a conventional sponge roller or similar developer supply member. In addition, the device prevents the developer from aggregating in the vicinity of the developer carrier and stabilizes the deposition of a charge on the developer carried on the developer carrier.

摘要翻译： 在用显影剂显影在图像载体上形成的潜像的显影装置中，显影剂载体将沉积在其上的显影剂传送到图像载体。 显影剂驱动部在与显影剂载体相邻的位置和显影剂至少易于聚集的位置移动显影剂，使得显影剂松动。 显影剂充电元件在显影剂上沉积预定量的电荷。 显影剂充电构件相对于显影剂载体的旋转方向和显影剂载体面向图像载体的显影位置的上游位于显影剂驱动部分的下游。 该装置体积小，价格便宜，因为它不包括传统的海绵辊或类似的显影剂供应构件。 此外，该装置防止显影剂在显影剂载体附近聚集并稳定电荷沉积在显影剂载体上承载的显影剂上。