公开(公告)号：US07386261B2

公开(公告)日：2008-06-10

申请号：US11242939

申请日：2005-10-05

申请人： Akihiro Noguchi ,  Fumitake Hirobe ,  Akinori Tanaka ,  Tadayoshi Nishihama

发明人： Akihiro Noguchi ,  Fumitake Hirobe ,  Akinori Tanaka ,  Tadayoshi Nishihama

IPC分类号： G03G15/08

CPC分类号： G03G15/0879 ,  G03G15/0877 ,  G03G2215/0602

摘要： The image forming apparatus includes a developing device, a movable member, a replenishment device, a developer replenishment path, and a conveyance screw so arranged within the developer replenishment path as not to come into contact with the internal wall of the developer replenishment path, wherein X (g) representing the quantity of the developer for replenishment present in the clearance section between the developer replenishment path and the conveyance screw, Y (g) representing the quantity of the developer in the developing device, Q(μC/mg) representing the absolute value of the electric charge per unit weight of the toner in the developing device, and A(μC/mg) representing the absolute value of the electric charge per unit weight of the toner relative to a 1% variation in the toner density satisfy the condition of a relationship of X≦(Y×Q)/(500×A).

摘要翻译： 图像形成装置包括显影装置，可移动构件，补充装置，显影剂补充路径和输送螺杆，其布置在显影剂补充路径内，以不与显影剂补充路径的内壁接触，其中 表示显影剂补充路径和输送螺杆之间的间隙部分中存在的用于补充的显影剂的量的X（g），表示显影装置中的显影剂的量的Y（g），表示 显影装置中的调色剂的每单位重量的电荷的绝对值，和表示调色剂单位重量的电荷的绝对值相对于调色剂浓度1％的变化的A（μC/ mg）满足 X <=（YxQ）/（500xA）的关系的条件。

公开(公告)号：US07362989B2

公开(公告)日：2008-04-22

申请号：US11246184

申请日：2005-10-11

申请人： Tadayoshi Nishihama ,  Fumitake Hirobe ,  Akinori Tanaka ,  Akihiro Noguchi

发明人： Tadayoshi Nishihama ,  Fumitake Hirobe ,  Akinori Tanaka ,  Akihiro Noguchi

IPC分类号： G03G15/08

CPC分类号： G03G15/0893 ,  G03G15/0877 ,  G03G2215/0822

摘要： The developing apparatus includes developer containing parts and a replenishment portion. The developer containing parts contains a developer circularly conveyed in the developer containing parts. The replenishment portion includes a replenish aperture and a regulation surface. The replenishment portion merges a replenishment agent passing through the regulation surface with the developer in the developer containing part. In the developing apparatus, a wall surface of the replenishment portion, located on a downstream side in a developer conveyance direction in the developer containing part facing to the replenishment portion, is formed by being inclined with respect to the developer conveyance direction.

摘要翻译： 显影装置包括显影剂容纳部分和补充部分。 包含部件的显影剂包含在显影剂中循环输送的显影剂容纳部件的显影剂。 补充部分包括补充孔和调节表面。 补充部分将通过调节表面的补充剂与显影剂包含部分中的显影剂合并。 在显影装置中，通过相对于显影剂输送方向倾斜地形成补充部的位于显影剂输送方向的下游侧的补充部的壁面。

公开(公告)号：US20070231014A1

公开(公告)日：2007-10-04

申请号：US11691113

申请日：2007-03-26

申请人： Akihiro Noguchi ,  Fumitake Hirobe ,  Tadayoshi Nishihama ,  Akinori Tanaka

发明人： Akihiro Noguchi ,  Fumitake Hirobe ,  Tadayoshi Nishihama ,  Akinori Tanaka

IPC分类号： G03G15/08

CPC分类号： G03G15/0822 ,  G03G2215/0833

摘要： A developing apparatus includes a developer container for containing a developer; a first screw, provided in a first screw, provided in a first chamber in the developer container, for feeding the developer; a second screw, provided in a second chamber in the developer container, for feeding the developer in a direction opposite from that of the first screw; an opening through which the developer is moved between the first chamber and the second chamber; and a developer carrying member, provided in the first chamber, for carrying the developer to effect development of an electrostatic image. At least one of said first screw and said second screw has a multiple thread screw portion having a number n of threads and a thread pitch P. The opening is located downstream from the multiple thread screw portion in a developer feeding direction and extends from a downstream-side end of the multiple thread screw portion in the developer feeding direction toward an upstream side of the multiple thread screw portion in a length equal to or more than nP.

摘要翻译： 显影装置包括用于容纳显影剂的显影剂容器; 第一螺钉，设置在第一螺钉中，设置在显影剂容器中的第一室中，用于供给显影剂; 第二螺杆，设置在显影剂容器中的第二室中，用于沿着与第一螺杆的方向相反的方向供给显影剂; 显影剂在第一室和第二室之间移动的开口; 以及设置在第一室中的显影剂承载构件，用于承载显影剂以实现静电图像的显影。 所述第一螺杆和所述第二螺杆中的至少一个具有多个螺纹螺纹部分，其具有数量为n的螺纹和螺距P。所述开口位于显影剂输送方向上的多螺纹螺纹部分的下游，并且从下游 在显影剂供给方向上的多个螺纹螺纹部分的端部朝向多螺纹螺纹部分的上游侧，其长度等于或大于nP。

公开(公告)号：US07218870B2

公开(公告)日：2007-05-15

申请号：US11076925

申请日：2005-03-11

申请人： Fumitake Hirobe

发明人： Fumitake Hirobe

IPC分类号： G03G15/08 ,  G03G15/00 ,  G03G15/10

CPC分类号： G03G15/5041 ,  G03G2215/00037 ,  G03G2215/0891

摘要： An image forming apparatus includes an image forming portion, a developing apparatus, a developer density detection portion, an image density detection portion, an environment detection portion, and a developer replenishing apparatus. The image forming apparatus further includes a control portion for performing a replenishing operation of the developer replenishing apparatus. The control portion also performs an image density control for controlling an electrostatic image forming condition of the image forming portion. When a detection result by the environment detection portion is changed by a predetermined value or the replenishment developer is renewed, the image forming apparatus advances to a mode of performing the image density control, while performing the replenishing operation by developer replenishing apparatus based on the detection result of the developer density detecting portion.

摘要翻译： 图像形成装置包括图像形成部分，显影装置，显影剂浓度检测部分，图像浓度检测部分，环境检测部分和显影剂补充装置。 图像形成装置还包括用于执行显影剂补充装置的补充操作的控制部分。 控制部分还执行用于控制图像形成部分的静电图像形成条件的图像浓度控制。 当环境检测部分的检测结果改变预定值或补充显影剂更新时，图像形成装置进行执行图像浓度控制的模式，同时基于检测执行显影剂补充装置的补充操作 显影剂浓度检测部分的结果。

公开(公告)号：US20070048021A1

公开(公告)日：2007-03-01

申请号：US11466600

申请日：2006-08-23

申请人： Fumitake Hirobe ,  Yuichiro Toyohara ,  Tatsuomi Murayama ,  Akihiro Noguchi

发明人： Fumitake Hirobe ,  Yuichiro Toyohara ,  Tatsuomi Murayama ,  Akihiro Noguchi

IPC分类号： G03G15/01

CPC分类号： G03G15/0152 ,  G03G15/0121 ,  G03G15/0173 ,  G03G2215/0177

摘要： An image forming apparatus includes a developing apparatus for developing an electrostatic image with a developer comprising at least a toner and a first external additive, the developing apparatus including a plurality of developing devices, containing toners different in color or lightness from each other, in which at least two developing devices contain a dark color toner and a light color toner which have an identical hue and different lightnesses and the developing device containing the light color toner is subjected to a developing operation prior to another developing device; a first transfer apparatus for sequentially transferring toner images, which have been developed by the plurality of developing devices, onto an intermediary transfer member; and a second transfer apparatus for transferring the toner images from the intermediary transfer member all together onto a transfer medium The first external additive includes particles having an aspect ratio of not less than 1.0 and not more than 1.5 and a number-average particle size of not less than 0.06 μm and not more than 0.3 μm, and has a coverage thereof with respect to the light color toner larger than that with respect to the dark color toner in a transferred state on the intermediary transfer member.

摘要翻译： 图像形成装置包括：用至少具有调色剂和第一外部添加剂的显影剂显影静电图像的显影装置，所述显影装置包括多个显影装置，所述显影装置包含彼此颜色或亮度不同的调色剂，其中 至少两个显影装置包含具有相同色调和不同亮度的深色调色剂和浅色调色剂，并且包含浅色调色剂的显影装置在另一显影装置之前经受显影操作; 用于将已由多个显影装置开发的调色剂图像顺序转印到中间转印部件上的第一转印装置; 以及用于将调色剂图像从中间转印部件一起转印到转印介质上的第二转印装置。第一外部添加剂包括长宽比不小于1.0且不大于1.5的数均粒径不大于 小于0.06μm和不大于0.3μm，并且相对于在中间转印部件的转印状态下的深色调色剂，其光色调色剂的覆盖率更大。

公开(公告)号：US20060083556A1

公开(公告)日：2006-04-20

申请号：US11249630

申请日：2005-10-14

申请人： Tadayoshi Nishihama ,  Fumitake Hirobe ,  Akihiro Noguchi

发明人： Tadayoshi Nishihama ,  Fumitake Hirobe ,  Akihiro Noguchi

IPC分类号： G03G15/09

CPC分类号： G03G15/0921 ,  G03G2215/0609

摘要： The image forming apparatus has an electrophotographic photosensitive member and a developing device for using a developer including toner and carrier, wherein the developing device develops an electrostatic image on a photosensitive member by putting the developer forming a magnetic brush on a developer bearing member including magnetic field generation device inside in contact with the photosensitive member, and when a contact pressure of the developer on the developer bearing member against the photosensitive member is P (Pa), a circumferential velocity of the developer bearing member is VSl (mm/s), a circumferential velocity of the photosensitive member is VDr (mm/s), and an elastic deformation ratio of the photosensitive member is W (%), a degree of sliding of the photosensitive member by the developer represented ranges from 650 to 60500.

摘要翻译： 图像形成装置具有电子照相感光构件和用于使用包括调色剂和载体的显影剂的显影装置，其中显影装置通过将形成磁刷的显影剂置于包含磁场的显影剂承载构件上而在感光构件上显影静电图像 内部与感光构件接触的发生装置，并且当显影剂承载构件上的显影剂抵靠感光构件的接触压力为P（Pa）时，显影剂承载构件的圆周速度为V S1 >（mm / s），感光体的圆周速度为V Dr（mm / s），感光体的弹性变形率为W（％），滑动的程度 由显影剂表示的感光构件的范围为650至60500。

公开(公告)号：US20060083554A1

公开(公告)日：2006-04-20

申请号：US11246184

申请日：2005-10-11

申请人： Tadayoshi Nishihama ,  Fumitake Hirobe ,  Akinori Tanaka ,  Akihiro Noguchi

发明人： Tadayoshi Nishihama ,  Fumitake Hirobe ,  Akinori Tanaka ,  Akihiro Noguchi

IPC分类号： G03G15/08

CPC分类号： G03G15/0893 ,  G03G15/0877 ,  G03G2215/0822

摘要： The developing apparatus includes developer containing parts and a replenishment portion. The developer containing parts contains a developer circularly conveyed in the developer containing parts. The replenishment portion includes a replenish aperture and a regulation surface. The replenishment portion merges a replenishment agent passing through the regulation surface with the developer in the developer containing part. In the developing apparatus, a wall surface of the replenishment portion, located on a downstream side in a developer conveyance direction in the developer containing part facing to the replenishment portion, is formed by being inclined with respect to the developer conveyance direction.

摘要翻译： 显影装置包括显影剂容纳部分和补充部分。 包含部件的显影剂包含在显影剂中循环输送的显影剂容纳部件的显影剂。 补充部分包括补充孔和调节表面。 补充部分将通过调节表面的补充剂与显影剂包含部分中的显影剂合并。 在显影装置中，通过相对于显影剂输送方向倾斜地形成补充部的位于显影剂输送方向的下游侧的补充部的壁面。

公开(公告)号：US5819132A

公开(公告)日：1998-10-06

申请号：US671844

申请日：1996-06-28

申请人： Fumitake Hirobe

发明人： Fumitake Hirobe

IPC分类号： G03G15/08

CPC分类号： G03G15/0855 ,  G03G15/0849 ,  G03G15/0893 ,  G03G2215/00042

摘要： An image forming apparatus is capable of toner replenishment based on density reference toner image and toner replenishment based on ration of toner to carrier. The apparatus is provided with an image carrier, a developing unit for developing the electrostatic image on the image carrier with developer of toner and carrier, replenishing unit for replenishing the toner to the developing unit, image density sensing unit for sensing a density of the developed toner image, ration sensing unit for sensing a ratio of the toner to the carrier in the developing unit, and selecting unit for selecting one of first toner replenishment in which an amount of toner based on a sensing output from the image density sensing unit is replenished, and second toner replenishment in which an amount of toner based on a sensing output from the ratio sensing unit is replenished.

摘要翻译： 图像形成装置能够基于基于浓度基准调色剂图像的调色剂补充和基于调色剂与载体的比例的调色剂补充。 该装置设置有图像载体，显影单元，用于使图像载体上的静电图像用调色剂和载体的显影剂显影，用于将调色剂补充到显影单元的补充单元，图像浓度感测单元，用于感测显影剂的密度 调色剂图像，用于感测显影单元中的调色剂与载体的比率的比例检测单元，以及用于选择其中补充基于来自图像浓度感测单元的感测输出的调色剂量的第一调色剂补充中的一个的选择单元 以及补充基于来自比例感测单元的感测输出的调色剂量的第二调色剂补充。