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1. 发明授权

US6034703A Process control of electrophotographic device 失效
标题翻译：电子照相装置的工艺控制
公开(公告)号：US6034703A
公开(公告)日：2000-03-07
申请号：US10780
申请日：1998-01-22
申请人： Dirk K. Broddin , Jean-Pierre J. Slabbaert , Frank A. Deschuytere , Robert F. Janssens , Werner F. Heirbaut , William E. Nelson , Venkat V. Easwar
发明人： Dirk K. Broddin , Jean-Pierre J. Slabbaert , Frank A. Deschuytere , Robert F. Janssens , Werner F. Heirbaut , William E. Nelson , Venkat V. Easwar
IPC分类号： B41J2/385 , G03G13/04 , G03G15/00
CPC分类号： B41J2/385 , G03G13/04 , G03G15/00
摘要： A method is described to control the maximum density and the pixel profile of microdots produced by a binary or multilevel electrophotographic device. In various embodiments, from the maximum development potential. The working point of the device is established by imposing a relation between charge level, discharge level and saturation voltage level of the photosensitive element. This allows to achieve consistent output densities, irrespective of the environmental parameters, such as relative humidity and temperature.
摘要翻译：描述了一种方法来控制由二元或多电子照相设备产生的微点的最大密度和像素分布。在各种实施例中，从最大的发展潜力。器件的工作点是通过施加感光元件的充电电平，放电电平和饱和电压电平之间的关系而建立的。这允许实现一致的输出密度，而不考虑环境参数，例如相对湿度和温度。

2. 发明授权

US5565295A Electrophotographic developer composition 失效
标题翻译：电子照相显影剂组合物
公开(公告)号：US5565295A
公开(公告)日：1996-10-15
申请号：US405394
申请日：1995-03-15
申请人： Serge M. Tavernier , Werner J. Op de Beeck , Robert F. Janssens , Paul J. Coppens
发明人： Serge M. Tavernier , Werner J. Op de Beeck , Robert F. Janssens , Paul J. Coppens
IPC分类号： G03G9/08 , G03G9/097 , G03G13/08
CPC分类号： G03G9/097 , G03G9/0819
摘要： A dry developer composition suitable for use in the development of an electrostatic charge pattern is described. This developer composition comprises toner particles the average particle diameter whereof is comprised between 3 and 10 microns, and spacing particles the average diameter whereof is under 40 microns and at least twice the average particle diameter of the toner particles, and is characterized in that the part of spacing particles in the overall amount of spacing particles and toner particles is comprised between 1 and 8% by weight.
摘要翻译：描述了适合用于开发静电荷图案的干燥显影剂组合物。该显影剂组合物包含其平均粒径为3至10微米的调色剂颗粒，平均直径为40微米且为调色剂颗粒的平均粒径的至少两倍的间隔颗粒，其特征在于，间隔颗粒和调色剂颗粒的总量的1〜8重量％。

3. 发明授权

US5012288A Dry toner development 失效
标题翻译：干式碳粉开发
公开(公告)号：US5012288A
公开(公告)日：1991-04-30
申请号：US277641
申请日：1988-11-29
申请人： Serge M. Tavernier , Robert F. Janssens , Jan A. Zwijsen
发明人： Serge M. Tavernier , Robert F. Janssens , Jan A. Zwijsen
IPC分类号： G03G15/09 , G03G13/08 , G03G15/08
CPC分类号： B82Y15/00 , G03G15/0808 , G03G2215/0617 , G03G2215/0636
摘要： Dry toner development of an electrostatic charge pattern on a recording surface is carried out with a dry toner layer formed on a donor member by electrostatic attraction resulting from a DC voltage applied across a gap between the surface of the donor member 22 and the surface of an upstream electrically conductive member 16 covered with a mixture of triboelectrically charged toner particles and magnetic carrier particles, the latter with adhering toner particles being attracted to the electrically conductive member surface by magnetic force and forming thereon a magnetic brush. The DC voltage in the gap causes selective attraction of the toner particles free of magnetic carrier particles and an AC voltage of lower peak magnitude can be superimposed on the DC voltage to set the particles in the gap in vibration and facilitate transfer across the gap. Application of the toner layer from the donor member surface to the recording surface is carried out without substantial relative movement between such surfaces.

4. 发明授权

US5254421A Toner receiving printing plate 失效
标题翻译：墨粉接收印版
公开(公告)号：US5254421A
公开(公告)日：1993-10-19
申请号：US544382
申请日：1990-06-27
申请人： Paul J. Coppens , Serge M. Tavernier , Robert F. Janssens , Paul Marksch , Marc P. Stevens , Mikolaas C. de Jaeger
发明人： Paul J. Coppens , Serge M. Tavernier , Robert F. Janssens , Paul Marksch , Marc P. Stevens , Mikolaas C. de Jaeger
IPC分类号： G03G9/087 , G03G5/06 , G03G7/00 , G03G9/08 , G03G9/09 , G03G13/28
CPC分类号： G03G13/283 , G03G7/0006 , G03G7/0013 , G03G7/004 , G03G7/006
摘要： Electrophotographic method of obtaining lithographic printing plates comprising the following steps: (i) uniformly electrostatically charging a photoconductor element, (ii) image-wise discharging said photoconductor element, (iii) developing the resulting electrostatic charge pattern with dry toner particles of which more than 90% by volume have an equivalent particle size diameter less than 10 microns and more than 50% by volume have an equivalent particle size diameter less than 7 microns, (iv) electrostatically transferring the developed image to a toner receiving plate, said toner receiving plate comprising a plastic film support that is thermostable to a temperature of at least 140.degree. C. and a crosslinked hydrophilic layer thereon, said layer containing infrared absorbing substances in such an amount that the reflection density of said layer in the visible spectrum is between 0.4 and 1.4, and (v) fixing the transferred toner to said toner receiving plate by infrared radiation fusing.

5. 发明授权

US5162180A Xeroprinting process using reversal development process 失效
标题翻译： Xeroprinting过程采用逆向开发过程
公开(公告)号：US5162180A
公开(公告)日：1992-11-10
申请号：US599419
申请日：1990-10-18
申请人： Luc H. Leenders , Robert C. Van Haute , Eddy A. Michiels , Serge M. Tavernier , Robert F. Janssens , Andre Verhecken
发明人： Luc H. Leenders , Robert C. Van Haute , Eddy A. Michiels , Serge M. Tavernier , Robert F. Janssens , Andre Verhecken
IPC分类号： G03G13/26 , G03G5/026
CPC分类号： G03G5/026
摘要： The present invention relates to a xeroprinting process, in particular a xeroprinting process comprising the following steps:(a) image-wise exposing to actinic radiation an electrostatic master having a photopolymerizable conductive layer to selectively polymerize and thereby increase resistivity in exposed areas of the layer;(b) forming a latent image of electrostatic charge by charging the master by corona discharge;(c) reversal developing the latent electrostatic image by depositing toner particles in the non-exposed areas of the layer;(d) transferring the toner image to another substrate and subsequent fusing;(e) resetting the process by cleaning and discharging the electrostatic master.According to a preferred embodiment the reversal development is effected by means of a development electrode inducing charges in the photopolymer plate opposite to the initial electrostatic image, and by means of dry electrophotographic toner.
摘要翻译：本发明涉及一种印刷方法，特别是一种印刷方法，其特征在于包括以下步骤：（a）将具有可光聚合导电层的静电原版成像曝光于光化辐射，以选择性聚合，从而提高该层的曝光区域中的电阻率 ; （b）通过电晕放电对母体进行充电形成静电电荷的潜像; （c）通过在所述层的未曝光区域中沉积调色剂颗粒来反转显影静电潜像; （d）将调色剂图像转印到另一个基底并随后进行定影; （e）通过清洁和排出静电主机来重置该过程。根据优选的实施方案，反转显影通过显影电极在感光聚合物板中引起与初始静电图像相反的电荷，并通过干电子照相调色剂来实现。

6. 发明授权

US5142333A Circuitous-flow electrostatic developer assembly with concurrent axial and circumferential particle movement 失效
标题翻译：具有同时轴向和周向颗粒运动的循环静电显影剂组件
公开(公告)号：US5142333A
公开(公告)日：1992-08-25
申请号：US640169
申请日：1991-01-11
申请人： Marcel F. Verbeek , Robert F. Janssens , Jan A. Zwijsen , Luc K. Van Aken , Serge M. Tavernier
发明人： Marcel F. Verbeek , Robert F. Janssens , Jan A. Zwijsen , Luc K. Van Aken , Serge M. Tavernier
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/09 , G03G15/0822
摘要： An electrostatic latent image developing assembly having a first feed passage for feeding developing material in a first direction, a second feed passage for feeding the developing material in a direction opposite to the first direction. A helical feed screw in the first feed passage, a helical supply screw in the second feed passsage for supplying part of the developing material to a developing sleeve, a connection between both sets of adjacent ends of such feed passages for permitting the developing material to circulate between the passages, wherein the feed screw and supply screw are disposed in parallel relation and the supply screw is provided with buckets around its periphery, the supply screw having a helical blade for advancing developing material in the second feed passage axially thereof while the buckets move the material circumferentially. Preferably, the radius of the helical blade reaches to at least one-half the depth of the buckets.
摘要翻译：一种静电潜像显影组件，具有用于沿第一方向供给显影材料的第一供给通道，用于沿与第一方向相反的方向供给显影材料的第二供给通道。第一进料通道中的螺旋进料螺杆，用于将显影材料的一部分供应到显影套筒的第二进料通道中的螺旋供给螺杆，用于允许显影材料循环的这些进料通道的两组相邻端之间的连接在所述通道之间，其中所述进给螺杆和供给螺杆被平行地设置，并且所述供给螺杆在其周边上设置有铲斗，所述供应螺杆具有螺旋叶片，用于在所述铲斗移动时轴向地推进所述第二进给通道中的显影材料材料周向。优选地，螺旋叶片的半径达到桶的深度的至少二分之一。

7. 发明授权

US4761357A Electrophoretic development of electrostatic charge images 失效
标题翻译：静电荷图像的电泳发展
公开(公告)号：US4761357A
公开(公告)日：1988-08-02
申请号：US29882
申请日：1987-03-25
申请人： Serge M. Tavernier , Pierre R. De Roo , Jozef L. Mampaey , Robert F. Janssens
发明人： Serge M. Tavernier , Pierre R. De Roo , Jozef L. Mampaey , Robert F. Janssens
IPC分类号： G03G13/10 , G03G15/10
CPC分类号： G03G13/10 , G03G15/101
摘要： Electrophoretic process and apparatus for developing an electrostatic charge pattern carried by a dielectric surface by progressively moving that surface through a development station and simultaneously progressively advancing a layer of liquid toner (11) comprised of toner particles dispersed in a carrier liquid, through that station in proximity to said charge-carrying surface, (3), and imposing an electric field bias to cause or promote selective image-wise movement of toner particles through said liquid at said development station and deposition thereof on said charge-carrying surface in a pattern representing said electrostatic charge pattern, wherein said layer of liquid toner contains toner particles in a concentration of from 2 to 25% by weight, and including the step of applying a film of a substantially toner-free non-polar liquid which is miscible with the carrier liquid of said liquid toner and which has a specific conductivity lower than 0.2 nS/m over said liquid toner layer (11) in such manner and at such a rate that each increment of such toner layer arrives at the development station, substantially free from turbulence and covered by the film of substantially toner-free liquid, the thickness of the film being such that at the development station it just makes contact with the chargecarrying surface.

8. 发明授权

US4750838A Optoelectronic circuit 失效
标题翻译：光电路
公开(公告)号：US4750838A
公开(公告)日：1988-06-14
申请号：US920436
申请日：1986-10-20
申请人： Alfons J. De Wolf , Robert F. Janssens
发明人： Alfons J. De Wolf , Robert F. Janssens
IPC分类号： G01N21/47 , G01N21/27 , G03G15/00 , G03G15/06 , G03G15/08 , G01N21/00 , G01N21/55
CPC分类号： G01N21/27 , G03G15/5041 , G01N21/4738 , G01N2201/0621 , G03G2215/00042
摘要： An optoelectric circuit for measuring the different optical densities of an image carrier, a toned test patch in an otherwise untoned imaging area of a photoconductor surface in a xerographic apparatus, wherein a LED (46) irradiates a test area of the surface, a phototransistor (47) receives radiation reflected from the text area, an amplifier (51) amplifies the output signal of the phototransistor, the LED is driven by the amplified output current of the phototransistor, and the current through the LED is used as a measure of the optical density.
摘要翻译：一种用于测量图像载体的不同光密度的光电路，在静电印刷设备中的感光体表面的另外未调色的成像区域中的调色测试贴片，其中LED（46）照射表面的测试区域，光电晶体管 47）接收从文本区域反射的辐射，放大器（51）放大光电晶体管的输出信号，LED由光电晶体管的放大输出电流驱动，并且通过LED的电流被用作光学测量密度。

9. 发明授权

US6011631A Uniform exposure of photosensitive medium by square intensity profiles for printing 失效
标题翻译：通过平面强度分布均匀曝光光敏介质进行印刷
公开(公告)号：US6011631A
公开(公告)日：2000-01-04
申请号：US791061
申请日：1997-01-29
申请人： Dirk K. Broddin , Frank A. Deschuytere , Robert F. Janssens , William E. Nelson , Vadlamannati Venkateswar
发明人： Dirk K. Broddin , Frank A. Deschuytere , Robert F. Janssens , William E. Nelson , Vadlamannati Venkateswar
IPC分类号： G03G15/00 , H04N1/407 , G02B26/08 , B41J2/435 , G02F1/00
CPC分类号： H04N1/407 , G03G15/5037 , G03G2215/00042
摘要： In classic optical rendering systems, the spot, illuminating a microdot on the photosensitive medium, is designed to overlap with neighboring microdots, typically having an overlap of 1.7 times the pitch of the microdots, for a luminous intensity of 1/e.sup.2 the highest intensity. A "sharp" photosensitive medium, such as a photographic film used in graphical applications, generates a binary circle, obtainable by thresholding. The area of such a circle is too large, which results in higher dot gain.Many systems, such as electrographic systems, do not behave as a "sharp" medium. If intermediate energy levels are used, in order to obtain continuous tone or multiple density levels, thresholding behavior may be avoided by appropriate choice of energy levels. Such a different sensitometry results in specific requirements for the energy distribution for each microdot.A square shaped uniform energy distribution within the space allotted to each microdot, allows for multiple density levels, without severe sensitometric requirements.
摘要翻译：在经典的光学渲染系统中，照射光敏介质上的微点的点被设计为与相邻的微点重叠，通常具有1.7倍于微点的间距的重叠，对于最高强度的1 / e2的发光强度。诸如在图形应用中使用的摄影胶片的“锋利”感光介质产生可通过阈值获得的二进制圆。这种圆的面积太大，这导致更高的网点增益。许多系统，如电子照相系统，不表现为“尖锐”的媒介。如果使用中间能量级别，为了获得连续色调或多重密度水平，可以通过适当选择能量水平来避免阈值行为。这种不同的感光度导致对于每个微点的能量分布的特定要求。在分配给每个微点的空间内的方形均匀能量分布允许多个密度水平，而没有严格的感光度要求。

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