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1. 发明授权

US5038159A Apertured printhead for direct electrostatic printing 失效
标题翻译：用于直接静电印刷的开孔打印头
公开(公告)号：US5038159A
公开(公告)日：1991-08-06
申请号：US452159
申请日：1989-12-18
申请人： Fred W. Schmidlin , William M. Lindenfelser , John D. Sotack
发明人： Fred W. Schmidlin , William M. Lindenfelser , John D. Sotack
IPC分类号： G03G15/05 , B41J2/385 , B41J2/415
CPC分类号： B41J2/4155
摘要： Direct electrostatic printing apparatus including structure for delivering developer or toner particles to a printhead forming an integral part of the printing device. The printhead structure includes control electrodes and a shield electrode structure secured to opposite sides of an insulative base. The radius of the opening of a control electrode is smaller than the radius of a corresponding shield electrode opening resulting in larger peak potentials for controlling toner flow for the same voltage applied to the control electrode of a printhead aperture wherein the control electrode opening is larger than the opening in a corresponding shield electrode opening.

2. 发明授权

US5193011A Method and apparatus for producing variable width pulses to produce an image having gray levels 失效
标题翻译：用于产生可变宽度脉冲以产生具有灰度级的图像的方法和装置
公开(公告)号：US5193011A
公开(公告)日：1993-03-09
申请号：US592468
申请日：1990-10-03
申请人： Gary A. Dir , Fred W. Schmidlin , John D. Sotack , Joseph F. Stephany
发明人： Gary A. Dir , Fred W. Schmidlin , John D. Sotack , Joseph F. Stephany
IPC分类号： B41J2/52 , B41J2/44 , G03G17/00 , H04N1/23 , H04N1/29 , H04N1/40 , H04N1/405
CPC分类号： H04N1/40031 , H04N1/4056 , G03G2217/0025
摘要： A system for printing gray levels without needing to use halftone cells. An architecture is disclosed for controlling printing elements to deposit a variable amount of toner onto a given area of paper. The architecture includes a pixel memory for determining a gray level for each pixel in a row, and a counter for incrementing a gray level. A comparator compares a memory location corresponding to a certain pixel with the output of the counter, and the comparison result is then applied to a printing element corresponding to the pixel.
摘要翻译：用于打印灰度级而不需要使用半色调细胞的系统。公开了一种用于控制印刷元件以将可变量的调色剂沉积到给定区域的纸上的架构。该架构包括用于确定行中的每个像素的灰度级的像素存储器和用于递增灰度级的计数器。比较器将对应于特定像素的存储器位置与计数器的输出进行比较，然后将比较结果应用于与像素对应的打印元件。

3. 发明授权

US4755837A Direct electrostatic printing apparatus and printhead cleaning structure therefor 失效
标题翻译：直接静电印刷设备和打印头清洁结构
公开(公告)号：US4755837A
公开(公告)日：1988-07-05
申请号：US926158
申请日：1986-11-03
申请人： Fred W. Schmidlin , John D. Sotack
发明人： Fred W. Schmidlin , John D. Sotack
IPC分类号： B41J2/385 , B41J2/415 , G03G15/05 , G03G15/34 , G03G21/00 , G03G21/10 , G01D15/06
CPC分类号： B41J2/4155 , G03G15/346 , G03G2217/0025
摘要： Direct Electrostatic Printing apparatus including structure for removing wrong sign developer particles from a printhead forming an an integral part of the printing device. The printing device includes, in addition to the printhead, a conductive shoe which is suitably biased during a printing cycle to assist in the electrostatic attraction of developer passing through apertures in the printhead onto the copying medium disposed intermediate the printhead and the conductive shoe. During a cleaning cycle, the printing bias is removed from the shoe and an electrical bias suitable for creating an oscillating electrostatic field which effects removal of toner from the printhead is applied to the shoe.
摘要翻译：直接静电印刷设备包括用于从形成打印装置的整体部分的打印头中去除错误标志的显影剂颗粒的结构。打印装置除了打印头之外还包括导电靴，该导电靴在打印周期期间被适当地偏置，以有助于将穿过打印头中的孔的显影剂的静电吸引到布置在打印头和导电靴之间的复印介质上。在清洁循环期间，印刷偏压从鞋中去除，并且适合于产生振荡静电场的电偏压，其将打印头中的调色剂去除从而被施加到鞋上。

4. 发明授权

US5541716A Electrostatic toner conditioning and transport system 失效
标题翻译：静电调色剂调理和运输系统
公开(公告)号：US5541716A
公开(公告)日：1996-07-30
申请号：US494687
申请日：1995-06-26
申请人： Fred W. Schmidlin
发明人： Fred W. Schmidlin
IPC分类号： G03G15/08 , G03G15/34
CPC分类号： G03G15/0822 , G03G15/346
摘要： A transport system for charging and delivering right-sign electrostatic toner to an image receiving member includes a toner conveyor having a loading/filtering segment and a delivery, segment. Each segment has a number of parallel electrodes connected to a DC-biased multiphase electric power to establish a traveling electrostatic wave to move toner along the segment. The loading/filtering segment gathers toner from a supply and feeds unipolar toner to the delivery segment. The delivery segment delivers right sign toner to the image receiving member. The traveling wave in the loading/filtering segment moves toner in either a synchronous surfing mode or an asynchronous hunching mode to the delivery segment. The traveling wave in the delivery segment moves toner in an asynchronous hunching mode to the image receiving member. The traveling wave and the speed of toner movement in the loading/filtering segment and the delivery segment are subject to control by means of the bias, amplitude, and frequency of the electric power on the respective segments. First and second toner extractors adjacent to the conveyor are electrically biased to extract therefrom, respectively, wrong-sign toner before it reaches the image receiving member, and unused right-sign toner after it passes the image receiving member.
摘要翻译：用于向图像接收构件充电和传送右边的静电调色剂的传送系统包括具有装载/过滤段和传送段的调色剂传送器。每个段具有连接到DC偏置多相电力的多个平行电极，以建立行进静电波沿着该段移动调色剂。装载/过滤段从电源中收集碳粉，并将单极调色剂供给到传送段。传送片段向图像接收部件传送正确的符号调色剂。加载/过滤段中的行波将调色剂以同步冲浪模式或异步冲压模式移动到输送段。传送段中的行波将异步调谐模式中的调色剂移动到图像接收构件。载波/滤波段和输送段中的行波和调色剂运动的速度通过各个段上的电力的偏置，振幅和频率进行控制。邻近输送机的第一和第二调色剂提取器分别被电偏置以在其到达图像接收构件之前分别从其中提取错字符调色剂，以及未经授权的右侧调色剂通过图像接收构件之后。

5. 发明授权

US5453768A Printing apparatus with toner projection means 失效
标题翻译：具有调色剂投影装置的打印设备
公开(公告)号：US5453768A
公开(公告)日：1995-09-26
申请号：US143658
申请日：1993-11-01
申请人： Fred W. Schmidlin
发明人： Fred W. Schmidlin
IPC分类号： G03G15/34 , G01D15/16 , G03G15/06
CPC分类号： G03G15/346 , G03G2217/0025
摘要： A direct electrostatic printing process which is insensitive to the polarity of the toner material is disclosed. The donor member of the printing apparatus includes alternate narrow and wide electrodes. The narrow electrodes are electrically pulsed to eject toner of one polarity in proximity with an array of electrically controlled apertures in a printhead, and unused toner are returned to the donor surface with low momentum to avoid dislodgment of other toner from the donor on impact. Toner ejection is accomplished with a three segment voltage pulse, including an impulse segment to detach toner of one polarity from the donor and accelerate the toner particles toward a printhead, a zero voltage segment during which the ejected toner drifts in the presence of electric fields produced by voltages applied to the printhead and toner receiving member, and a final low voltage segment of the same polarity as the first impulse segment to decelerate toner returning to the donor to a low landing speed and thereby avoid dislodgement of other toner from the donor. The donor structure and ejector pulse renders aperture type direct printing stable for long periods of time without frequent cleaning of the printhead.
摘要翻译：公开了对调色剂材料的极性不敏感的直接静电印刷工艺。印刷装置的施主构件包括交替的狭窄和宽电极。窄电极是电脉冲的，以将打印头中的电控孔的阵列附近的一个极性的调色剂喷射出来，而未使用的调色剂以低动量返回到供体表面，以避免其它调色剂在受影响时从供体上脱落。调色剂喷射通过三段电压脉冲来实现，该脉冲段包括一个脉冲段，以将一个极性的调色剂从供体中分离出来，并将调色剂颗粒加速到打印头，零电压段，在此期间喷射的调色剂在产生电场的情况下漂移通过施加到打印头和调色剂接收构件的电压，以及与第一脉冲段相同极性的最终低电压段，以使得调色剂返回给供体减速到低着陆速度，从而避免其它调色剂从供体移出。供体结构和喷射器脉冲使孔径直接打印长时间稳定，而不会频繁地清洁打印头。

6. 发明授权

US5153618A Ionographic imaging system 失效
标题翻译：离子成像系统
公开(公告)号：US5153618A
公开(公告)日：1992-10-06
申请号：US744158
申请日：1991-08-13
申请人： John A. Frank , Joseph Mammino , Dennis A. Abramsohn , Donald S. Sypula , Jerome P. Chasko , William L. Gary , Deborah J. Nichol-Landry , Fred W. Schmidlin , Dasarao K. Murti , Brian E. Springett
发明人： John A. Frank , Joseph Mammino , Dennis A. Abramsohn , Donald S. Sypula , Jerome P. Chasko , William L. Gary , Deborah J. Nichol-Landry , Fred W. Schmidlin , Dasarao K. Murti , Brian E. Springett
IPC分类号： B41J2/415 , G03G5/02 , G03G15/32
CPC分类号： G03G15/321 , B41J2/415 , G03G5/0202
摘要： An ionographic imaging member containing a conductive layer and a uniform and continuous dielectric imaging layer free of voids, the imaging layer having a dielectric constant of from about 1.5 to about 40 and a thickness of at least about 45 micrometers, the thickness divided by the dielectric constant having a value of from about 30 to about 60 micrometers. This member may be used in an ionographic imaging process.
摘要翻译：一种包含导电层和不含空隙的均匀且连续的电介质成像层的成像成像构件，所述成像层的介电常数为约1.5至约40，厚度为至少约45微米，厚度除以电介质常数值为约30至约60微米。该成员可用于离子成像过程。

7. 发明授权

US5097277A Cyclonic toner charging donor 失效
标题翻译：循环电荷充电器
公开(公告)号：US5097277A
公开(公告)日：1992-03-17
申请号：US548459
申请日：1990-07-02
申请人： Fred W. Schmidlin , Robert G. Martin
发明人： Fred W. Schmidlin , Robert G. Martin
IPC分类号： G03G15/08 , G03G15/34
CPC分类号： G03G15/0822 , G03G15/346 , G03G2217/0025
摘要： Direct Electrostatic Printer including a combination toner charging and delivery system. The combination toner charging and delivery system serves to convey well charged toner to an area adjacent an apertured printhead through which toner particles are propelled in image configuration. The system is provided with an annular channel in a generally cylindrical member through which toner laden air moves under pressure. During movement uncharged toner particles collide with a triboactive surface of the channel due to centrifugal force and become charged. The other surface delineating the channel carries a bias electrode thereon. The electrostatic field created by the bias prevents toner from colliding with the triboactive surface once it has reached a predetermined charge/mass ratio.

8. 发明授权

US06416171B1 Xerojet dry powder printing process 失效
标题翻译： Xerojet干粉印刷工艺
公开(公告)号：US06416171B1
公开(公告)日：2002-07-09
申请号：US09188458
申请日：1998-11-09
申请人： Fred W. Schmidlin
发明人： Fred W. Schmidlin
IPC分类号： B41J206
CPC分类号： G03G15/348 , G03G15/344 , G03G2215/0119 , G03G2217/0016 , G03G2217/0025
摘要： An apparatus and method for the delivery of electrostatically charged toner particles to an image receiving member using a traveling electrostatic wave toner conveyor. The traveling electrostatic wave toner conveyor is overlaid with barrier electrodes that divide the conveyor into parallel columns, forming isolated potential wells to receive pixel packets of toner. An ejector electrode in registry with each conveyor column modulates the quantity of toner in pixel packets that travel along the parallel conveyor columns. The quantity in the packets is responsive to the modulated voltage applied to the ejector electrode. Focusing electrodes transfer pixel packets from the traveling wave conveyor as toner jets focused onto the image receiving member. A repulsive dc bias is applied to the barrier electrodes to confine toner within the conveyor columns. Another embodiment includes an image transfer conveyor similarly overlaid with barrier electrodes. A toner supply conveyor (or four such conveyors for CMYK toners) supplies pixel packets to the transfer conveyor. An ejector electrode on the supply conveyor in registry with each conveyor column ejects toner from the supply conveyor to the transfer conveyor in response to modulated voltage. A corresponding attraction electrode on the transfer conveyor, in registry with each ejector electrode on the supply conveyor and subjected to voltage of opposite polarity, attracts toner from the supply conveyor to the transfer conveyor. CMYK toners are of equivalent particle size small enough to reduce the granularity of continuous tone images below the threshold of visibility. Multiplexing is accomplished by four ejector electrodes, positioned one ahead of another by one-fourth the transfer conveyor wavelength and energized together through a common bus electrode.
摘要翻译：一种用于使用行进静电波调色剂输送机将带静电的调色剂颗粒输送到图像接收部件的设备和方法。移动的静电波调色剂输送机覆盖有阻挡电极，其将输送机分成平行的列，形成隔离的势阱以接收墨粉的像素包。与每个输送机列对准的喷射器电极调节沿着平行输送机柱行进的像素分组中的调色剂量。分组中的量响应于施加到喷射器电极的调制电压。聚焦电极将来自行波传送器的像素包转移到聚焦到图像接收部件上的调色剂喷射。将斥力的直流偏压施加到阻挡电极以将调色剂限制在输送塔内。另一个实施例包括类似地覆盖有阻挡电极的图像传送输送器。墨粉供应输送机（或四个用于CMYK调色剂的输送机）将像素包提供给传送带。在每个输送机支架上的供给输送机上的喷射器电极响应于调制的电压将调色剂从供给输送机排出到转印输送机。在输送输送机上的相应的吸引电极，与供给输送机上的每个喷射器电极对准并且经受相反极性的电压，将调色剂从供应输送机吸引到传送输送机.MYK调色剂的粒度足够小以减少连续色调图像的粒度低于可见度阈值。复用是通过四个喷射器电极实现的，四个喷射器电极位于另一个前面，另一个位于传送输送器波长的四分之一处，并通过公共总线电极一起通电。

9. 发明授权

US5132708A DEP apparatus for selectively creating monochrome highlight color or process color images 失效
标题翻译： DEP设备，用于选择性地创建单色高亮颜色或处理彩色图像
公开(公告)号：US5132708A
公开(公告)日：1992-07-21
申请号：US548330
申请日：1990-07-02
申请人： Fred W. Schmidlin , Raymond W. Stover
发明人： Fred W. Schmidlin , Raymond W. Stover
IPC分类号： B41J2/385 , G03G15/01 , G03G15/05 , G03G15/34 , G03G17/00
CPC分类号： G03G15/346 , G03G15/0142 , G03G15/0194
摘要： A Direct Electrostatic Printer including a vacuum drum for transporting copy sheets past a plurality of DEP printhead structures for selectively printing various types of images. For example, black only images, highlight color images or process color images may be printed. To this end there are provided a plurality of printheads each utilizing a different color toner. Each printhead structure may be selectively actuated depending upon whether its color is to be used in forming the final image. Thus, where a process color image is to be formed, all of the printheads may be actuated and where black images are to be created only the black printhead is actuated.
摘要翻译：一种直接静电打印机，包括用于将复印纸传送通过多个DEP打印头结构的真空鼓，用于选择性地打印各种类型的图像。例如，可以打印仅黑色图像，高亮显示彩色图像或处理彩色图像。为此，提供了各自使用不同颜色的调色剂的多个打印头。可以根据其颜色是否用于形成最终图像来选择性地致动每个打印头结构。因此，在要形成处理彩色图像的情况下，可以启动所有打印头，并且仅在黑色打印头被致动的地方创建黑色图像。

10. 发明授权

US4860036A Direct electrostatic printer (DEP) and printhead structure therefor 失效
标题翻译：直接静电打印机（DEP）及其打印头结构
公开(公告)号：US4860036A
公开(公告)日：1989-08-22
申请号：US226178
申请日：1988-07-29
申请人： Fred W. Schmidlin
发明人： Fred W. Schmidlin
IPC分类号： B41J2/415 , G03G15/05 , G03G15/34
CPC分类号： G03G15/346 , B41J2/4155 , G03G2217/0025
摘要： Near letter quality (NLQ) characters are formed using direct electrostatic printing (DEP) by providing a printhead structure containing at least three equally spaced rows of equally spaced and staggered apertures. In the preferred embodiment, the printhead structure includes at least four rows of apertures. The number of rows is equal to the distance between aperture centers divided by the diameter of a spot of toner deposited by each of the apertures.

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