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公开(公告)号：US06978094B2
公开(公告)日：2005-12-20
申请号：US10648492
申请日：2003-08-25
CPC分类号： G03G15/0849 , G03G15/0853 , G03G15/0893 , G03G2215/0607
摘要： This invention relates to an image forming apparatus including a developing unit which develops an electrostatic latent image formed on an image carrier by using a two-component developing agent containing polymerized toner. The developing unit includes a supply/convey member which conveys the two-component developing agent in the axial direction while agitating it and a toner density sensor which detects the toner density of the two-component developing agent. The toner density sensor is placed to be in a non-contact state with respect to the supply/convey member and oppose it with a gap of 0.8 mm or less. The diameter of the supply/convey member is set to 23 mm or more.
摘要翻译： 本发明涉及一种图像形成装置，其包括显影单元，该显影单元通过使用含有聚合调色剂的双组分显影剂来显影形成在图像载体上的静电潜像。 显影单元包括供给/输送构件，其在搅动时输送双组分显影剂在轴向方向上;以及调色剂浓度传感器，其检测双组分显影剂的调色剂浓度。 调色剂浓度传感器被放置成相对于供给/传送部件处于非接触状态，并以0.8mm或更小的间隙相对。 供给/输送部件的直径设定为23mm以上。
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公开(公告)号：US07865099B2
公开(公告)日：2011-01-04
申请号：US12015141
申请日：2008-01-16
CPC分类号： G03G15/065 , G03G15/0803 , G03G2215/00029 , G03G2215/00033
摘要： There is described an image forming apparatus, which makes it possible to suppress quality degradation of an image on the basis of a developing electric current profile without optically detecting density of a patch image. The image forming apparatus includes: a developing current detecting sensor to detect a developing current; and a control section that conducts consecutive operations of: creating a detecting-use image pattern for detecting a developing characteristic, by aligning a plurality of image patterns, which are different from each other in density; forming a latent image of the detecting-use image pattern onto the photoreceptor element; finding a developing electric current profile, which represents a transition of the developing electric current flowing during an operation of developing the detecting-use image pattern, from an outputted signal of the developing current; and changing an image forming condition, based on the developing electric current profile found by the finding operation.
摘要翻译： 描述了一种图像形成装置，其可以基于显影电流分布来抑制图像的质量劣化，而不光学地检测贴片图像的密度。 图像形成装置包括：显影电流检测传感器，用于检测显影电流; 以及控制部，其进行以下连续操作：通过使密度彼此不同的多个图像图像对齐来创建用于检测显影特性的检测用图像图案; 将所述检测用图像图案的潜像形成在所述感光体元件上; 从显影电流的输出信号中发现表示在显影检测用图像图案的操作期间流动的显影电流的转变的显影电流曲线; 以及基于由寻找操作发现的显影电流曲线来改变图像形成条件。
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公开(公告)号：US20070110463A1
公开(公告)日：2007-05-17
申请号：US11507617
申请日：2006-08-22
IPC分类号： G03G15/00
CPC分类号： G03G15/5062 , G03G15/5037
摘要： An image forming apparatus includes: a toner image carrier which carries a toner image thereon; a recording medium selection information input section to which recording medium selection information is inputted to select a recording medium to which the toner image carried on the toner image carrier is transferred; a fog controller which sets a fog control parameter value to control a fogging level of the toner image carrier; and an image forming section which forms the toner image to be carried on the toner image carrier based on the fog control parameter set by the fog controller. The fog controller sets the fog control parameter value so that the fogging level of the toner image carrier when the recording medium selection information inputted corresponds to a coated sheet, is lower than that when the recording medium selection information inputted corresponds to a normal sheet.
摘要翻译： 图像形成装置包括：在其上承载调色剂图像的调色剂图像载体; 输入记录介质选择信息的记录介质选择信息输入部分，用于选择传送调色剂图像载体上承载的调色剂图像的记录介质; 雾控制器，其设置雾控制参数值以控制调色剂图像载体的雾化水平; 以及图像形成部，其基于由雾化控制器设定的雾度控制参数，形成要承载在调色剂图像载体上的调色剂图像。 雾控制器设置雾控制参数值，使得当输入的记录介质选择信息对应于涂布纸时，调色剂图像载体的雾化水平低于输入的记录介质选择信息对应于普通纸张时的雾度水平。
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公开(公告)号：US07991318B2
公开(公告)日：2011-08-02
申请号：US12184453
申请日：2008-08-01
IPC分类号： G03G21/20
CPC分类号： G03G15/0815
摘要： An image forming apparatus includes an image carrier, a developer carrier arranged to face the image carrier to form a developing nip portion, which carries developer containing toner for developing a latent image formed on the image carrier, a developing unit having a developer regulating member that regulates a thickness of a layer of the carried developer, an air sending duct having an air sending path provided on the developing unit, which sends air to the developer carrier and a suction duct having a suction path provided on the developing unit, which sucks air from the developer carrier. The developer regulating member is arranged on an air sending duct side, and the air sending and suction paths are arranged to be connected by forming a space surrounded by a surface of the developer carrier, the developer regulating member and a wall forming the suction path.
摘要翻译： 图像形成装置包括图像载体，显影剂载体，其布置成面对图像载体以形成显影夹持部，该显影夹持部承载含有用于显影形成在图像载体上的潜像的调色剂的显影剂;显影单元，具有显影剂调节构件， 调节所携带的显影剂的层的厚度，送风管道，其具有设置在显影单元上的送风路径，其将空气送至显影剂载体;以及抽吸管道，其具有设置在显影单元上的吸入路径，吸入空气吸入空气 来自开发商运营商。 显影剂调节构件布置在送风管道侧，并且排气和吸入路径被布置成通过形成由显影剂载体的表面，显影剂调节构件和形成吸入路径的壁包围的空间来连接。
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5.发明授权Image forming apparatus with control section to control development bias potential 有权具有控制部分的图像形成装置，用于控制显影偏置电位公开(公告)号：US07869727B2
公开(公告)日：2011-01-11
申请号：US12369992
申请日：2009-02-12
IPC分类号： G03G15/08
CPC分类号： G03G15/5037 , G03G15/065 , G03G2215/0005
摘要： High quality images are provided by controlling development conditions based on the proportion of the toner layer potential difference, which a difference between the toner layer potential and electrostatic latent image potential, to the development contrast potential difference, which is a difference between the development bias potential and electrostatic latent image potential. The control section for controlling a development power supply controls the voltage supplied by the development power supply, based on the toner layer potential difference and development contrast potential difference in the development section. This arrangement ensures formation of high-quality images free from concentration of toner.
摘要翻译： 通过基于调色剂层电位差（调色剂层电位和静电潜像电位之间的差异）与显影对比电位差的比例来控制显影条件来提供高质量图像，显影对比度电位差是显影偏压电位 和静电潜像电位。 用于控制显影电源的控制部分基于显影部分中的调色剂层电位差和显影对比度电位差来控制显影电源提供的电压。 这种布置确保形成高质量的图像，不会使色粉浓缩。
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公开(公告)号：US07751733B2
公开(公告)日：2010-07-06
申请号：US11507617
申请日：2006-08-22
IPC分类号： G03G15/00
CPC分类号： G03G15/5062 , G03G15/5037
摘要： An image forming apparatus includes: a toner image carrier which carries a toner image thereon; a recording medium selection information input section to which recording medium selection information is inputted to select a recording medium to which the toner image carried on the toner image carrier is transferred; a fog controller which sets a fog control parameter value to control a fogging level of the toner image carrier; and an image forming section which forms the toner image to be carried on the toner image carrier based on the fog control parameter set by the fog controller. The fog controller sets the fog control parameter value so that the fogging level of the toner image carrier when the recording medium selection information inputted corresponds to a coated sheet, is lower than that when the recording medium selection information inputted corresponds to a normal sheet.
摘要翻译： 图像形成装置包括：在其上承载调色剂图像的调色剂图像载体; 输入记录介质选择信息的记录介质选择信息输入部分，用于选择传送调色剂图像载体上承载的调色剂图像的记录介质; 雾控制器，其设置雾控制参数值以控制调色剂图像载体的雾化水平; 以及图像形成部，其基于由雾化控制器设定的雾度控制参数，形成要承载在调色剂图像载体上的调色剂图像。 雾控制器设置雾控制参数值，使得当输入的记录介质选择信息对应于涂布纸时，调色剂图像载体的雾化水平低于输入的记录介质选择信息对应于普通纸张时的雾度水平。
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7.发明授权Image forming apparatus with moving speed ratio change section and image forming method including changing circumferential speed ratio 有权具有移动速度比变化部分的图像形成装置和包括改变圆周速度比的图像形成方法公开(公告)号：US07574154B2
公开(公告)日：2009-08-11
申请号：US11473101
申请日：2006-06-22
CPC分类号： G03G15/095 , G03G15/50
摘要： An image forming apparatus includes: a moving speed ratio change section which changes a circumferential speed ratio between a surface of a developer bearing member and a surface of an image carrier; and a memory section which stores a target value of fog toner. After the circumferential speed ratio has been changed by the moving speed ratio change section, a controller determines a fog control parameter based on comparing the value detected by the fog toner detection section with the target value stored in the memory section. After then, and the controller controls the moving speed ratio change section to return the circumferential speed ratio to the circumferential speed ratio prior to the change.
摘要翻译： 图像形成装置包括：移动速度比变化部，其改变显影剂承载部件的表面和图像载体的表面之间的圆周速度比; 以及存储部分，其存储雾调色剂的目标值。 在通过移动速度比变化部分改变圆周速度比之后，控制器基于将由雾化调色剂检测部分检测到的值与存储在存储部中的目标值进行比较来确定雾化控制参数。 然后，控制器控制移动速度比改变部分，以便在改变之前将圆周速度比返回到圆周速度比。
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公开(公告)号：US20050232648A1
公开(公告)日：2005-10-20
申请号：US10992019
申请日：2004-11-17
CPC分类号： G03G15/5058 , G03G2215/0119
摘要： A color image forming apparatus including: a plurality of developing devices for forming a black toner image and a color toner image; an image carrier for carrying toner images; a density detecting device for detecting densities of the black toner image and the color toner image each on the image carrier, the density detecting device having a light emitting element and a light sensitive element; and a controller for the density detecting device; wherein, when detecting a density of the black toner image, the controller controls a drive voltage of the light emitting element so that an amount of received light from a non-image area becomes a first predetermined value; and when detecting a density of the color toner image, the controller controls the drive voltage so that an amount of received light from a non-image area becomes a second predetermined value.
摘要翻译： 一种彩色图像形成装置，包括：多个用于形成黑色调色剂图像和彩色调色剂图像的显影装置; 用于承载调色剂图像的图像载体; 密度检测装置，用于检测图像载体上的黑色调色剂图像和彩色调色剂图像的浓度，所述浓度检测装置具有发光元件和感光元件; 和密度检测装置的控制器; 其中，当检测到黑色调色剂图像的浓度时，控制器控制发光元件的驱动电压，使得来自非图像区域的接收光量成为第一预定值; 并且当检测到彩色调色剂图像的浓度时，控制器控制驱动电压，使得来自非图像区域的接收光量成为第二预定值。
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公开(公告)号：US20080240793A1
公开(公告)日：2008-10-02
申请号：US12015106
申请日：2008-01-16
IPC分类号： G03G15/09
CPC分类号： G03G15/0921 , G03G2215/0634
摘要： An image forming apparatus having an image carrier for forming an electrostatic latent image and a developing unit for developing the electrostatic latent image with a two-component developing agent, the developing unit includes: a developing agent carrier for developing the electrostatic latent image to form a visible image, having inside thereof a development main magnetic pole for forming a bristle of a magnetic brush; and a plurality of magnetic poles for conveying the developing agent, wherein the developing unit performs a counter type contact developing method, and wherein, the development area is formed so that, a contact width of the bristle of the magnetic brush is 70% or less with respect to a development width, and a center position of the contact width is positioned on an upstream side with respect to a center position of the development width in a rotation direction of said image carrier.
摘要翻译： 一种具有用于形成静电潜像的图像载体和用于使用双组分显影剂显影静电潜像的显影单元的图像形成装置，所述显影单元包括：用于显影静电潜像以形成静电潜像的显影剂载体 可见图像，其内部具有用于形成磁刷的刷毛的显影主磁极; 以及用于输送显影剂的多个磁极，其中显影单元执行反式接触显影方法，并且其中形成显影区域使得磁刷的刷毛的接触宽度为70％以下 相对于显影宽度，并且接触宽度的中心位置位于相对于所述图像载体的旋转方向的显影宽度的中心位置的上游侧。
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公开(公告)号：US07289754B2
公开(公告)日：2007-10-30
申请号：US11182785
申请日：2005-07-18
IPC分类号： G03G15/09
CPC分类号： G03G15/0921
摘要： An image forming apparatus incorporating: an image forming body; and a developing unit having a developer carrier, a magnetic field generator, a developer restriction member, a first conveyer, and a second conveyer, wherein the magnetic field generator has: a main magnetic pole; pickup magnetic pole; and a strip-off magnetic pole, wherein the developing unit satisfies following conditions: (a) the second conveyer is a screw conveyer having an outer diameter within 24 mm-30 mm, rotating speed of 300-500 rpm, (b) the pickup magnetic pole is arranged at an angle of 25°-60° downstream with a line connecting a rotation centers of the developer carrier and the second conveyer, (c) the strip-off magnetic pole is arranged at 60°-80° upward with the line,(d) a transporting capability of the first conveyer is larger than that of the second conveyer.
摘要翻译： 一种图像形成装置，包括：成像体; 以及具有显影剂载体，磁场发生器，显影剂限制构件，第一输送器和第二输送器的显影单元，其中所述磁场发生器具有：主磁极; 拾磁极; 和剥离磁极，其中显影单元满足以下条件：（a）第二输送机是外径在24mm-30mm，转速为300-500rpm的螺旋输送机，（b）拾取器 磁极以下方的25°-60°的角度布置有连接显影剂载体和第二输送机的旋转中心的线，（c）剥离磁极以60°-80°向上设置， （d）第一输送机的输送能力大于第二输送机的输送能力。
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