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公开(公告)号：US6026266A
公开(公告)日：2000-02-15
申请号：US148077
申请日：1998-09-04
CPC分类号： G03G15/0812 , G03G15/065 , G03G2215/0617 , G03G2215/0634
摘要： To prevent scattering of toner when an image forming operation is started and ended in a developing process using one-component toner, a rotatable developing roller in contact with a photosensitive member carrying a static latent image, which is used to carry and feed one-component toner, is provided in a developing tank containing one-component toner. Initially, toner is fed to a feed roller, then passed through a toner restricting member which is pressed against the developing roller to restrict the amount of toner to be fed, so that a layer of toner is formed at a fixed thickness and fed into a developing area in contact with the photosensitive member. Thus a static latent image is produced on the developing roller. In this process, a developing bias voltage Va is supplied to the developing roller, a restricting voltage Vb is supplied to the toner restricting member so as to fix the thickness of the toner layer, and a supply voltage Vc is supplied to the feed roller to control the supply of toner. Specifically, the developing bias voltage Va, restricting voltage Vb, and supply voltage Vc are applied to their respective objects before the developing roller begins rotating, thereby minimizing or preventing the scattering or blowing out of toner. Additionally, supply of those voltages Va, Vo, and Vc are stopped after the developing roller stops, which also helps to prevent excess scattering of toner.
摘要翻译： 为了防止在使用单组分调色剂的显影过程中开始图像形成操作并结束时调色剂的散射，可旋转的显影辊与携带静电潜像的感光部件接触，该感光部件用于承载和供给单组分调色剂 调色剂设置在含有单组分调色剂的显影槽中。 最初，将调色剂送入进料辊，然后通过调色剂限制部件，该调色剂限制部件被压靠在显影辊上，以限制要供给的调色剂的量，使得一层调色剂以固定的厚度形成并供给到 显影区域与感光构件接触。 因此，在显影辊上产生静电潜像。 在该过程中，向显影辊供给显影偏压Va，将限制电压Vb提供给调色剂限制件，以固定调色剂层的厚度，并将供给电压Vc供给到进料辊 控制墨粉的供应。 具体地说，在显影辊开始旋转之前，将显影偏压Va，限制电压Vb和电源电压Vc施加到它们各自的物体上，从而最小化或防止调色剂的散射或吹出。 此外，在显影辊停止之后，停止提供这些电压Va，Vo和Vc，这也有助于防止调色剂的过度散射。
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公开(公告)号：US6049689A
公开(公告)日：2000-04-11
申请号：US131389
申请日：1998-08-07
申请人： Hiroshi Ishii , Eiichi Kido , Tetsuro Toyoshima , Takashi Sakai , Tadashi Iwamatsu , Hiroshi Tatsumi
发明人： Hiroshi Ishii , Eiichi Kido , Tetsuro Toyoshima , Takashi Sakai , Tadashi Iwamatsu , Hiroshi Tatsumi
CPC分类号： G03G15/0812 , G03G15/0817
摘要： A developing apparatus includes a toner carrier for transferring toner to a development position, a layer-thickness regulating member for forming a toner layer having a predetermined thickness on the toner carrier by making contact in a leading edge or a surface of a vicinity of the leading edge with the toner carrier, and a supplier for supplying a one-component toner to the toner carrier. Also combined with the layer-thickness layer is a vibration absorbing device allowing the toner to be applied in a uniform thickness. The vibration absorbing device can also be a sealing member located on the toner carrier. Each sealing member can be two different materials effective to absorb vibration.
摘要翻译： 显影装置包括用于将调色剂转印到显影位置的调色剂载体，用于在调色剂载体上形成具有预定厚度的调色剂层的层厚调节部件，其通过在前导边缘或前导部分附近的表面接触来形成 与调色剂载体的边缘，以及用于向调色剂载体供应单组分调色剂的供应商。 还与层厚层结合的是允许以均匀厚度施加调色剂的振动吸收装置。 振动吸收装置也可以是位于调色剂载体上的密封构件。 每个密封件可以是有效吸收振动的两种不同材料。
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公开(公告)号：US06178303B1
公开(公告)日：2001-01-23
申请号：US09099349
申请日：1998-06-18
IPC分类号： G03G1508
CPC分类号： G03G15/0813 , G03G15/0806 , G03G2215/0634
摘要： A developing apparatus includes: a first rotary member; a second rotary member having an elastic surface and adapted to be rotated in contact with the first rotary member. A contact depth controlling roller is kept in rotative free engagement with each end of a shaft of the second rotary member and having an outer circumferential surface abutting against the first rotary member and an inner circumferential surface abutting against the shaft of the second rotary member for keeping a contact depth of the second rotary member abutting against the first rotary member at a predetermined level. A controller is provided so as to rotate the second rotary. This structure, for example, eliminates the need for bearings.
摘要翻译： 一种显影装置，包括：第一旋转构件; 具有弹性表面并适于与第一旋转构件接触旋转的第二旋转构件。 接触深度控制辊与第二旋转构件的轴的每个端部保持旋转自由接合，并且具有抵靠第一旋转构件的外周面和抵靠第二旋转构件的轴的内周面，用于保持 所述第二旋转构件的接触深度以预定水平抵靠所述第一旋转构件。 设置有使第二旋转体旋转的控制器。 例如，该结构消除了对轴承的需要。
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公开(公告)号：US6032003A
公开(公告)日：2000-02-29
申请号：US174008
申请日：1998-10-16
IPC分类号： G03G15/06
CPC分类号： G03G15/065
摘要： A switching element and a protective resistance are connected between a developing roller and a developing bias source. A switching element switches on and off a connection between the developing roller and the developing bias source. A protective resistance is connected to the switching element in series. There is a controller and a bias stabilizer. The controller switches on the switching element when a developing bias voltage is to be applied to the developing roller and switches off the switching element when the developing roller is caused to be in an electrically floating state without applying the developing bias voltage, and which bias stabilizer is disposed between the developing roller and a ground and maintains a predetermined stable voltage only when the switching element is switched on. The structure enables a high-quality image to be formed with a low power consumption.
摘要翻译： 开关元件和保护电阻连接在显影辊和显影偏压源之间。 开关元件接通和断开显影辊和显影偏压源之间的连接。 保护电阻串联连接到开关元件。 有一个控制器和一个偏置稳定器。 当将显影偏压施加到显影辊上时，控制器将开关元件接通，并且当显影辊在不施加显影偏压的情况下使显影辊处于电浮动状态时切断开关元件，并且哪个偏压稳定器 设置在显影辊和地面之间，并且仅在开关元件接通时才保持预定的稳定电压。 该结构能够以低功耗形成高质量的图像。
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公开(公告)号：US06323888B1
公开(公告)日：2001-11-27
申请号：US09642131
申请日：2000-08-18
IPC分类号： B41J2385
CPC分类号： G03G15/326 , G03G15/04072 , H04N1/29
摘要： An image forming apparatus has the following characteristics: the diameter of an exposure beam for exposing a latent image is not more than twice a minimum dot recording period p in peak intensity 1/e2, and the value of a spatial frequency characteristic function of a latent image defined by the thickness of a photoreceptor layer, the dielectric constant of the photoreceptor layer, the thickness of a developer layer, the dielectric constant of the developer layer and a spatial frequency &ohgr; defined as &ohgr;=&pgr;/p is at least 0.3. The image forming apparatus having such characteristics can reproduce an image of high resolution exceeding 600 to 1200 DPI with high fidelity.
摘要翻译： 图像形成装置具有以下特征：用于曝光潜像的曝光光束的直径不大于峰值强度1 / e2的最小点记录周期p的两倍，并且潜在的空间频率特征函数的值 由感光体层的厚度，感光体层的介电常数，显影剂层的厚度，显影剂层的介电常数和定义为Ω= pi / p的空间频率Ω定义的图像为至少0.3。 具有这种特征的图像形成装置可以以高保真度再现超过600至1200DPI的高分辨率图像。
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公开(公告)号：US06298206B1
公开(公告)日：2001-10-02
申请号：US09506304
申请日：2000-02-17
IPC分类号： G03G1508
CPC分类号： G03G15/344 , G03G15/0806 , G03G15/0812 , G03G2215/0614 , G03G2215/0634
摘要： It is an object of the invention that development quality is improved by increasing the amount of charge during the transportation of toner by a toner holding member and decreasing the amount of charge during development for rendering an electrostatic latent image visible. A one-component non-magnetic toner is supplied from a toner supplying unit to the toner holding member such that the toner is electrostatically attracted to adhere to the toner holding member with a large amount of charge. The charge of the toner under transportation is reduced by charge adjusting means such as a conductive roller supplied with a potential from a frictional charging member or a voltage source, whereby the amount of development or the amount of toner adhering to an electrostatic latent image is increased and development quality is improved.
摘要翻译： 本发明的一个目的是通过在调色剂保持部件输送调色剂期间增加电荷量并减少显影期间的电荷量，使静电潜像变得可见，从而提高显影质量。 单色非磁性调色剂从调色剂供应单元供应到调色剂保持构件，使得调色剂被静电吸引以以大量的电荷附着到调色剂保持构件。 运输中的调色剂的电荷通过诸如由摩擦充电部件或电压源提供电位的导电辊等电荷调节装置而减少，由此显影量或与静电潜像粘附的调色剂量增加 开发质量提高。
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公开(公告)号：US6087056A
公开(公告)日：2000-07-11
申请号：US307180
申请日：1999-05-07
CPC分类号： G03G13/08 , G03G9/0819 , G03G9/0821 , G03G9/0823
摘要： A toner which can exhibit 5 nN or less of inter-particle force calculated by the following equation (1) when the toner is laminated and carried on a toner carrier:Fv=q.multidot.E-Fi (1)where Fv is an inter-particle force, q.multidot.E is a Coulomb force calculated by the following equation:q.multidot.E=q.multidot.{Vb+(Q/M).multidot..delta..multidot.P.multidot.dt.sub.1.sup.2 /(2.epsilon.o.epsilon..sub.T)}/(.epsilon..sub.T .multidot.g+dt.sub.1) (2)where Fi is an image-force calculated by the following equation (3):Fi={(W.sub.1 .multidot..pi.d.sup.3 .multidot..delta.)/(6 .epsilon.o .epsilon..sub.T)}.multidot.(Q/M).sup.2 (3)where q is a quantity of charge [C] of the toner particle to be developed, E is an electric field strength [V/m] acting on the toner layer, Q/M is a toner charge-to-mass ratio [mC/g], W.sub.1 is an amount of toner separated by development among the toner laminated and carried on the toner carrier, .epsilon.o is a vacuum dielectric constant [C/(V.multidot.m)], .epsilon..sub.T is an apparent specific dielectric constant [C/(V.multidot.m)] of the toner layer, d is an average particle size [.mu.m] of the toner, .delta. is a true density [g/cm.sup.3 ] of the toner, g is a gap [mm] between the outermost surface of the toner on the toner carrier and the electrostatic latent image holder, dt.sub.1 is a thickness [.mu.m] of the toner layer on the toner carrier, Vb is a development bias voltage [V] and P is a toner packing rate.The present invention provides a toner and a non-contact developing method using the same which realize stable flying-development by suppressing to 5 nN or less the inter-particle force of the toner other than the image-force acting on the toner laminated and carried on the toner carrier.
摘要翻译： 当调色剂层压并承载在调色剂载体上时，可以通过下列等式（1）计算出5nN或更小的颗粒间力的调色剂：Fv = qxE-Fi（1）其中Fv是颗粒间力 ，qxE是通过以下等式计算的库仑力：qxE = qx {Vb +（Q / M）x delta xPxdt12 /（2 epsilonεT）} /（epsilon Txg + dt1）（2）其中，Fi是图像 - 由下式（3）计算的力：Fi = {（W1x pi d3x delta）/（6 epsilonεT）} x（Q / M）2（3）其中q是电荷量[C] 调色剂颗粒，E是作用在调色剂层上的电场强度[V / m]，Q / M是调色剂电荷质量比[mC / g]，W1是通过显影分离出的调色剂量 在层压并承载在调色剂载体上的调色剂中，ε是真空介电常数[C /（Vxm）]，εT是调色剂层的表观比介电常数[C /（Vxm）]，d是平均 调色剂的粒径μ，δ是真密度[g / cm 3] o f是调色剂，g是调色剂载体上的调色剂的最外表面与静电潜像保持体之间的间隙[mm]，dt1是调色剂载体上调色剂层的厚度μ，Vb是显影剂 偏压[V]和P是调色剂包装率。 本发明提供一种调色剂和非接触显影方法，其使用该调色剂和非接触显影方法，其通过抑制除了作用在层叠和携带的调色剂上的图像力之外的调色剂的颗粒间的力以5NN以下，实现稳定的飞行显影 在调色剂载体上。
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公开(公告)号：US06873813B2
公开(公告)日：2005-03-29
申请号：US10725462
申请日：2003-12-03
CPC分类号： G03G15/08 , G03G2215/0648
摘要： The increasing ratio of development density to increase in potential difference between a photoreceptor and a development roller differs between the region where the potential difference is small and the region where the potential difference is large. The increasing ratio of development density at the region where the potential difference is small is smaller than the increasing ratio of development density at the region where the potential difference is large. Development is conducted under the developing characteristics in which the upper limit of the development density at the region where the increasing ratio of development density is small is at least 0.3.
摘要翻译： 在电位差小的区域和电位差大的区域之间，显影密度与感光体与显影辊之间的电位差增加的比例不同。 电位差小的区域的显影密度的增加率小于电位差大的区域的显影密度增加率。 在发展密度增加比例小的区域的显影密度的上限为0.3以上的显影特性进行显影。
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公开(公告)号：US06714225B2
公开(公告)日：2004-03-30
申请号：US10213427
申请日：2002-08-06
IPC分类号： B04J2385
CPC分类号： H04N1/4055
摘要： When a halftone image region that is below a predetermined density is to be reproduced, a processing unit controlling an exposure unit selects an exposure pattern that can represent a record dot diameter within a range based on a predetermined rule from exposure patterns prepared in advance. Accordingly, graininess is suppressed. When there are a plurality of exposure patterns that can be applied, the exposure pattern with the lowest number of dots present per 1 inch is employed. Accordingly, a halftone image is formed with the image reproducibility improved.
摘要翻译： 当要再现低于预定浓度的半色调图像区域时，控制曝光单元的处理单元基于预先规定的曝光图案，基于预定规则从一个范围内选择可以表示记录点直径的曝光图案。 因此，抑制了颗粒性。 当存在可以应用的多个曝光图案时，采用每1英寸存在最少点数的曝光图案。 因此，形成具有提高图像再现性的半色调图像。
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10.发明授权Apparatus and method for forming image with superior image reproducibility 有权用于形成具有优异图像再现性的图像的装置和方法公开(公告)号：US06239824B1
公开(公告)日：2001-05-29
申请号：US09591607
申请日：2000-06-09
IPC分类号： G03G1504
CPC分类号： H04N1/40037
摘要： An exposure energy control unit of an image forming apparatus controls exposure energy density Edot (&mgr;J/cm2) to be applied to an isolated one-dot pattern of image information to satisfy a relation −0.11P+6.4≦Edot/Eline≦−0.2P+10.7 where Eline (&mgr;J/cm2) represents exposure energy density applied to a line pattern of the image information having lines on every second lines and P (&mgr;m) represents dot pitch. Accordingly, image reproducibility of both of a periodic line pattern and an isolated dot pattern can be enhanced without decreasing the film thickness of a photoreceptor even if the resolution is high.
摘要翻译： 图像形成装置的曝光能量控制单元控制曝光能量密度Edot（μJ/ cm 2），以应用于孤立的单点图案的图像信息，以满足其中Eline（μJ/ cm 2）表示施加到 在第二行上具有线的图像信息的线图案和P（母）表示点间距。 因此，即使分辨率高，也可以在不降低感光体的膜厚的情况下增强周期性线图案和孤立点图案的图像再现性。
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