公开(公告)号：US5422665A

公开(公告)日：1995-06-06

申请号：US068029

申请日：1993-05-28

申请人： Joseph F. Stephany ,  Richard V. LaDonna ,  Gary A. Kneezel ,  Michael Poleshuk ,  Thomas A. Tellier ,  Thomas E. Watrobski ,  Joseph J. Wysocki

发明人： Joseph F. Stephany ,  Richard V. LaDonna ,  Gary A. Kneezel ,  Michael Poleshuk ,  Thomas A. Tellier ,  Thomas E. Watrobski ,  Joseph J. Wysocki

IPC分类号： B41J2/05

CPC分类号： B41J2/04563 ,  B41J2/0458

摘要： A thermal ink-jet printhead comprises a substrate having a plurality of heating elements defined thereon. A thermistor, disposed on the substrate, includes a conductor loop which does not encompass the heating elements on the substrate. The configuration of the thermistor significantly reduces both electromagnetic and capacitance interference caused by the heating elements.

摘要翻译： 热喷墨打印头包括其上限定有多个加热元件的基板。 设置在基板上的热敏电阻器包括不包含基板上的加热元件的导体环路。 热敏电阻的配置显着降低了由加热元件引起的电磁干扰和电容干扰。

公开(公告)号：US5422664A

公开(公告)日：1995-06-06

申请号：US81898

申请日：1993-06-25

申请人： Joseph F. Stephany

发明人： Joseph F. Stephany

IPC分类号： B41J2/05

CPC分类号： B41J2/04558 ,  B41J2/0456 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04591

摘要： A Thermal ink jet printer has a rotatable platen with an oscillator circuit mounted therein which includes a resonant vibratory device on which the ink droplets ejected from the printhead nozzles by electrical pulses are received and the mass thereof are measured. A piezoelectric sensor, such as a quartz crystal, serves as an environment for measuring the mass of ink droplets deposited on the crystal face. The difference in frequency before and after drop deposition is exactly proportional to the ink drop mass. Frequency change is measured to provide a feedback signal to the printer controlled for adjustment of the droplet ejecting pulses to control the drop size.

摘要翻译： 热敏式喷墨打印机具有可旋转的压板，其中安装有振荡器电路，其包括谐振振动装置，在其上接收从打印头喷嘴喷射的墨滴，并且测量其质量。 诸如石英晶体的压电传感器用作测量沉积在晶体面上的墨滴质量的环境。 液滴沉积前后的频率差与墨滴质量正好成正比。 测量频率变化以向打印机提供反馈信号，以控制液滴喷射脉冲的调节以控制液滴尺寸。

公开(公告)号：US5223853A

公开(公告)日：1993-06-29

申请号：US840239

申请日：1992-02-24

申请人： Joseph J. Wysocki ,  William G. Hawkins ,  Gary A. Kneezel ,  Richard V. LaDonna ,  Joseph F. Stephany ,  Thomas A. Tellier ,  Thomas E. Watrobski

发明人： Joseph J. Wysocki ,  William G. Hawkins ,  Gary A. Kneezel ,  Richard V. LaDonna ,  Joseph F. Stephany ,  Thomas A. Tellier ,  Thomas E. Watrobski

IPC分类号： B41J2/05 ,  B41J2/125 ,  G01D15/18

CPC分类号： B41J2/04541 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04593 ,  B41J2/2128

摘要： A system controls an ink jet printing apparatus for propelling ink jet droplets on demand from a printhead having a plurality of drop ejectors. In the printhead, each ejector includes a heating element actuable in response to electrical input signals, each input signal having an amplitude and a time duration, selectably applied to the heating element to produce a temporary vapor bubble and cause a quantity of ink to be emitted for the creation of a mark on a copy sheet. The temperature of ink in the printhead is sensed, and a combination of power level and time duration of the electrical input signal for the heating element to result in a desired size of the mark of the copy sheet is selected, by entering the sensed temperature of the ink into a predetermined function relating the energy of the electrical input signal to the corresponding resulting size of the mark on the copy sheet.

摘要翻译： 系统控制喷墨打印设备，用于根据需要从具有多个液滴喷射器的打印头推进喷墨滴。 在打印头中，每个喷射器包括可响应于电输入信号而致动的加热元件，每个输入信号具有可选择地施加到加热元件的振幅和持续时间，以产生暂时的蒸汽气泡并导致一定量的墨水被排出 用于在复印纸上创建标记。 感测到打印头中的墨水的温度，并且通过输入检测到的温度来选择加热元件的电输入信号的持续时间的组合以产生所需的复印纸的标记尺寸 油墨成为将电输入信号的能量与复印纸上的标记的相应结果尺寸相关联的预定功能。

公开(公告)号：US5111320A

公开(公告)日：1992-05-05

申请号：US619411

申请日：1990-11-29

申请人： Joseph J. Wysocki ,  Sui K. Hark ,  Virgil J. Hull ,  Joseph F. Stephany ,  Andras I. Lakatos ,  Ram S. Narang

发明人： Joseph J. Wysocki ,  Sui K. Hark ,  Virgil J. Hull ,  Joseph F. Stephany ,  Andras I. Lakatos ,  Ram S. Narang

IPC分类号： G02F1/1343 ,  G02F1/141

CPC分类号： G02F1/134309 ,  G02F1/141 ,  G02F2201/122

摘要： A light shutter is provided wherein a first plate which includes a pixel electrode for use in applying a includes a background electrode located adjacent the pixel voltage potential across a ferroelectric material also electrode and substantially surrounding the pixel electrode, whereby an electronic mask can be created adjacent the pixel electrode in the ferroelectric material. A second plate which, along with the first plate sandwiches the ferroelectric material, includes a backplane electrode which is used in conjunction with the pixel and background electrodes on the first plate for applying voltage potentials across the ferroelectric material. By maintaining a minimal amount of spacing between the background electrode and the pixel electrode, a voltage potential can be applied between the background and backplane electrodes so that the ferroelectric material located adjacent the pixel electrode can be maintained in, for example, a non-light transmissive state whereby the contrast between the pixel and inter-pixel regions is greatly improved. Image bars or displays can be formed by arranging a plurality of light shutters (and consequently, pixel electrodes) on the first plate with one or more background electrodes surrounding the plurality of pixel electrodes. Additionally, the background electrode and/or other electrodes can be used for applying electric fields to the ferroelectric material which are non-parallel to the polarization direction of the molecules of the ferroelectic material to reduce the time required to change the ferroelectric material between light transmissive and light blocking states.

摘要翻译： 提供了一种光闸，其中包括用于施加的像素电极的第一板包括邻近铁电材料电极并且基本上围绕像素电极的像素电压电位附近的背景电极，由此可以相邻地形成电子掩模 铁电材料中的像素电极。 与第一板夹着铁电材料一起的第二板包括背板电极，其与第一板上的像素和背景电极结合使用，以跨越铁电体材料施加电压电位。 通过在背景电极和像素电极之间保持最小量的间隔，可以在背景电极和背板电极之间施加电压电位，使得位于像素电极附近的铁电材料可以保持在例如非光 透射状态，从而大大提高像素和像素间区域之间的对比度。 可以通过在多个像素电极周围设置一个或多个背景电极而在第一板上布置多个光快门（以及因此的像素电极）来形成图像条或显示器。 此外，背景电极和/或其他电极可以用于向铁电材料施加电场，铁电材料不与铁电材料的分子的偏振方向平行，以减少在透光性之间改变铁电材料所需的时间 和阻光状态。

公开(公告)号：US07422301B2

公开(公告)日：2008-09-09

申请号：US11033369

申请日：2005-01-10

申请人： Gary A. Kneezel ,  Thomas P. Courtney ,  Joseph F. Stephany ,  Richard V. LaDonna ,  Juan J. Becerra

发明人： Gary A. Kneezel ,  Thomas P. Courtney ,  Joseph F. Stephany ,  Richard V. LaDonna ,  Juan J. Becerra

IPC分类号： B41J2/205 ,  B41J29/393

CPC分类号： H04N1/58

摘要： A method and apparatus for reducing intercolor bleed using pixel spot size control to improve print quality is provided. The method includes printing pixels having a first spot size in an image region having a boundary between a first color portion and a second color portion of the image by ejecting first sized ink drops from the printhead nozzles, and printing border pixels having spot sizes smaller than the first spot size in the image region by ejecting smaller ink drops from the printhead nozzles, wherein the smaller ink drops are smaller than the first sized ink drops. A printing system is provided having means for printing pixels in the region having the first spot size and means for printing border pixels having spot sizes smaller than the first spot size.

摘要翻译： 提供了一种使用像素点尺寸控制来减少色间渗色以提高打印质量的方法和装置。 该方法包括：通过从打印头喷嘴排出第一大小的墨滴，在具有第一颜色部分和图像的第二颜色部分之间的边界的图像区域中打印具有第一光斑尺寸的像素，并且打印具有小于 通过从打印头喷嘴喷射较小的墨滴，在图像区域中的第一个斑点尺寸，其中较小的墨滴小于第一尺寸的墨滴。 提供了具有用于打印具有第一光斑尺寸的区域中的像素的装置的打印系统和用于打印具有小于第一光点尺寸的光斑尺寸的边框像素的装置。

公开(公告)号：US5745131A

公开(公告)日：1998-04-28

申请号：US510936

申请日：1995-08-03

申请人： Gary A. Kneezel ,  William R. Burger ,  Steven J. Harrington ,  Dale R. Ims ,  Joseph F. Stephany

发明人： Gary A. Kneezel ,  William R. Burger ,  Steven J. Harrington ,  Dale R. Ims ,  Joseph F. Stephany

IPC分类号： B41J2/21 ,  G06K15/10 ,  B41J2/205

CPC分类号： B41J2/2125 ,  G06K15/102

摘要： A printing machine of the type in which liquid ink is deposited on a recording medium for printing gray scale images. The printing machine includes a printhead having ink ejecting nozzles of different sizes. Nozzles of the same size are arranged in groups and groups of nozzles are offset from one another. Ink drops of one group are deposited at locations corresponding to the points of a grid and ink drops of another group are deposited at locations corresponding to points not on the grid. Gray scale printing is achieved by the variation in drop size produced by different groups of nozzles as well as offsetting nozzles of one or more groups of nozzles from a reference group of nozzles printing on the points of a grid.

摘要翻译： 一种印刷机，其中液体墨水沉积在用于打印灰度图像的记录介质上。 印刷机包括具有不同尺寸的喷墨嘴的打印头。 相同尺寸的喷嘴以组排列，并且喷嘴组彼此偏移。 将一组的墨滴沉积在对应于网格点的位置处，另一组的墨滴沉积在对应于不在网格上的点的位置处。 通过不同组的喷嘴产生的液滴尺寸的变化以及从网格点上打印的参考喷嘴组的一组或多组喷嘴的偏移喷嘴实现灰度级打印。

公开(公告)号：US5731824A

公开(公告)日：1998-03-24

申请号：US574090

申请日：1995-12-18

申请人： Gary A. Kneezel ,  Joseph F. Stephany ,  William R. Burger

发明人： Gary A. Kneezel ,  Joseph F. Stephany ,  William R. Burger

IPC分类号： B41J2/125 ,  B41J2/175 ,  G01F23/24 ,  G01G17/04 ,  B41J2/195

CPC分类号： B41J2/17513 ,  B41J2/17566 ,  G01G17/06

摘要： The invention discloses a system and method for sensing changes in the weight of an ink reservoir which supplies ink to a printhead which ejects ink onto a recording medium during a printer operational mode. The ink reservoir, whether located separately from the printhead, as in a plotter or pagewidth printer embodiment, or mechanically attached to the printhead and moved in a scanning printhead architecture, has its weight supported by a structure. A strain gage or other weight sensor is affixed to the supporting structure and incorporated in a circuit which produces an output signal representative of resistive changes in the weight sensor. Since a resistive change in the weight sensor is caused by a decrease in the supply of ink in the reservoir during continued printer operation, the output signal is proportional to the ink level. The output signal is digitized and sent to a system controller where it is compared to a predetermined reference level and a low level output signal is generated for use as a warning to a operator or user. In one embodiment, the strain gage is a leg of a resistor in a bridge circuit and provides continuous ink level readout. In another embodiment, multiple warning levels are enabled by inserting the resistor in a circuit where comparators compare the resistance of the strain gage to reference resistance levels.

摘要翻译： 本发明公开了一种用于感测墨水储存器的重量变化的系统和方法，该墨水储存器向在打印机操作模式期间将墨水喷射到记录介质上的打印头提供墨水。 油墨储存器，无论是与打印头分开设置，如在绘图机或页宽打印机实施例中，或机械地附接到打印头并以扫描打印头架构移动，其重量由结构支撑。 应变计或其他重量传感器固定到支撑结构上并且包括在产生表示重量传感器中的电阻变化的输出信号的电路中。 由于重量传感器中的电阻变化是由连续打印机操作期间储存器中墨水供应的减少引起的，所以输出信号与油墨水平成正比。 输出信号被数字化并发送到系统控制器，在那里将其与预定参考电平进行比较，生成低电平输出信号以用作对操作者或用户的警告。 在一个实施例中，应变片是桥接电路中的电阻器的腿，并且提供连续的墨水量读出。 在另一个实施例中，通过将电阻器插入电路中来实现多个警告电平，其中比较器将应变计的电阻与参考电阻电平进行比较。

公开(公告)号：US5682184A

公开(公告)日：1997-10-28

申请号：US574089

申请日：1995-12-18

申请人： Joseph F. Stephany ,  Gary A. Kneezel ,  John H. Slowik

发明人： Joseph F. Stephany ,  Gary A. Kneezel ,  John H. Slowik

IPC分类号： B41J2/125 ,  B41J2/175 ,  G01F23/26 ,  B41J2/195 ,  G01F23/00

CPC分类号： G01F23/268 ,  B41J2/17566 ,  G01F23/266

摘要： A capacitor is created in an ink tank supplying ink to an ink jet printhead by placing parallel capacitive plates on sides of the tank with the ink therebetween acting as the capacitor dielectric. An electrical AC potential is applied across the capacitor. Changes in current flow through the plates are detected in a phase sensitive bridge circuit and digital signals are generated and sent to a processor for conversion into low ink level signals. The output signal is also used to identify a particular type of ink by either comparing points on a characteristic curve of the ink volume verses capacitance or, in a second embodiment, by periodically sweeping an applied oscillator voltage over a selected frequency range and comparing measured electrical resonance parameters for the ink tank capacitor with stored information about resonance parameters for different types of ink.

摘要翻译： 在墨罐中产生电容器，通过在墨水两侧放置平行的电容板，墨水在其间用作电容器电介质，从而向喷墨打印头供墨。 在电容器两端施加电气电位。 在相敏电桥电路中检测到电流流过板的变化，并产生数字信号并将其发送到处理器以转换为低油位信号。 输出信号还用于通过比较油墨体积与电容的特性曲线上的点来识别特定类型的墨水，或者在第二实施例中，通过周期性地扫描所选频率范围上施加的振荡器电压，并比较测量的电 具有储存的关于不同类型墨水的共振参数的信息的墨槽电容器的共振参数。

公开(公告)号：US5497174A

公开(公告)日：1996-03-05

申请号：US209050

申请日：1994-03-11

申请人： Joseph F. Stephany ,  Juan J. Becerra ,  Thomas P. Courtney ,  Gary A. Kneezel ,  Richard V. LaDonna ,  Peter J. John ,  Thomas E. Watrobski ,  Joseph J. Wysocki

发明人： Joseph F. Stephany ,  Juan J. Becerra ,  Thomas P. Courtney ,  Gary A. Kneezel ,  Richard V. LaDonna ,  Peter J. John ,  Thomas E. Watrobski ,  Joseph J. Wysocki

IPC分类号： B41J2/05

CPC分类号： B41J2/04568 ,  B41J2/04573 ,  B41J2/0458 ,  B41J2/04588

摘要： An apparatus and method compensates for a voltage drop of electrical pulse signals selectively applied to a plurality of heater elements on a printhead of an ink jet printing device. A number of heater elements to be pulsed at a given time is determined and a time duration of each of the pulse signals is selected based on information including the determined number of heater elements to be pulsed. In another aspect, the position on the printhead of the heater elements to be pulsed is determined and the time duration of the pulse signals is selected further based on the determined position. By varying the time duration of the pulse signals applied to the heater elements, a voltage drop across the heater elements due to the number of heater elements simultaneously pulsed and/or the position of the heater elements on the printhead is compensated for, maintaining reliable jetting performance while minimizing the voltage by which operating printing voltage needs to exceed the threshold printing voltage.

摘要翻译： 一种装置和方法补偿了选择性地施加到喷墨打印装置的打印头上的多个加热器元件的电脉冲信号的电压降。 确定在给定时间被脉冲的多个加热器元件，并且基于包括确定的要被脉冲的加热器元件的数量的信息来选择每个脉冲信号的持续时间。 在另一方面，确定要被脉冲的加热器元件的打印头上的位置，并且基于所确定的位置进一步选择脉冲信号的持续时间。 通过改变施加到加热器元件的脉冲信号的持续时间，补偿由于同时脉冲的加热器元件的数量和/或打印头上的加热器元件的位置而导致的加热器元件上的电压降，以保持可靠的喷射 同时最小化操作印刷电压需要超过阈值印刷电压的电压。

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。