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31. 发明授权

US5909231A Gas flush to eliminate residual bubbles 失效
标题翻译：气体冲洗消除残留气泡
公开(公告)号：US5909231A
公开(公告)日：1999-06-01
申请号：US550437
申请日：1995-10-30
申请人： Winthrop D. Childers , Brian J. Keefe , Barbara Parcells , Frank Drogo , Shailendra Kumar , Steven L. Webb , Hanno Ix , Kai Kong Iu
发明人： Winthrop D. Childers , Brian J. Keefe , Barbara Parcells , Frank Drogo , Shailendra Kumar , Steven L. Webb , Hanno Ix , Kai Kong Iu
IPC分类号： B41J2/175 , B41J2/19
CPC分类号： B41J2/17506 , B41J2/19
摘要： In a inkjet print cartridge ink flows from the reservoir around the edge of the silicon substrate before being ejected out of the nozzles. During operation, warm thermal boundary layers of ink form adjacent the substrate and dissolved gases in the thermal boundary layer of the ink form the bubbles. If the bubbles to grow larger than the diameter of subsequent ink passageways these bubbles choke the flow of ink to the vaporization chambers. This results in causing some of the nozzles of the printhead to become temporarily inoperable. The disclosure describes a method of avoiding such a malfunction in a liquid inkjet printing system by providing a method for reducing residual air bubbles in an inkjet print cartridge by flushing the empty cartridge by passing carbon dioxide through the fill port or the ink ejection nozzles prior to filling the print cartridge with ink and thereby eliminating residual air bubbles from the print cartridge when the print cartridge is filled with ink.
摘要翻译：在喷墨打印墨盒中，在喷出喷嘴之前，墨水从硅基片的边缘周围流出。在操作期间，油墨的温热边界层形成在基底附近，溶解在油墨热边界层中的气体形成气泡。如果气泡生长大于随后的油墨通道的直径，则这些气泡阻止油墨流向蒸发室。这导致打印头的一些喷嘴暂时不能操作。本公开描述了一种通过提供一种通过在二氧化碳通过填充口或喷墨嘴之前冲洗空盒而减少喷墨打印墨盒中的残留气泡的方法来避免液体喷墨打印系统中的这种故障的方法用墨水填充打印墨盒，从而在打印墨盒充满墨水时消除打印墨盒的残留气泡。

32. 发明授权

US5874974A Reliable high performance drop generator for an inkjet printhead 失效
标题翻译：用于喷墨打印头的可靠的高性能液滴发生器
公开(公告)号：US5874974A
公开(公告)日：1999-02-23
申请号：US608376
申请日：1996-02-28
申请人： Kenneth J. Courian , John L. Stoffel , Richard A. Sader , Keshava A. Prasad , Steven L. Webb , David H. Donovan , Jules G. Moritz, III , Brian J. Keefe , Steven W. Steinfield , Winthrop D. Childers
发明人： Kenneth J. Courian , John L. Stoffel , Richard A. Sader , Keshava A. Prasad , Steven L. Webb , David H. Donovan , Jules G. Moritz, III , Brian J. Keefe , Steven W. Steinfield , Winthrop D. Childers
IPC分类号： B41J2/05 , B41J2/14 , B41J2/16 , B41J2/175
CPC分类号： B41J2/1643 , B41J2/04511 , B41J2/04541 , B41J2/04543 , B41J2/04546 , B41J2/0458 , B41J2/04581 , B41J2/14024 , B41J2/1404 , B41J2/14072 , B41J2/14129 , B41J2/14145 , B41J2/14201 , B41J2/1433 , B41J2/1603 , B41J2/1623 , B41J2/1625 , B41J2/1628 , B41J2/1631 , B41J2/1634 , B41J2202/13
摘要： An inkjet drop ejection system comprises a combination of printhead components and ink, mutually tuned to maximize operating characteristics of the printhead and print quality and dry time of the ink. Use of a short shelf (distance from ink source to ink firing element), on the order of 55 microns, provides a very high speed refill. However, it is a characteristic of high speed refill that it has a tendency for being overdamped. To provide the requisite damping, the ink should have a viscosity greater than about 2 cp. In this way, the ink and architecture work together to provide a tuned system that enables stable operation at high frequencies. One advantage of the combination of a pigment and a dispersant in the ink is the resultant higher viscosity provided. The high speed would be of little value if the ink did not have a fast enough rate of drying. This is accomplished by the addition of alcohols or alcohol(s) and surfactant(s) to the ink. Fast dry times are achieved with a combination of alcohols, such as isopropyl alcohol with a 4 or 5 carbon alcohol or with iso-propyl alcohol plus surfactant(s). One preferred embodiment of a short shelf (90 to 130 microns), ink viscosity of about 3 cp, and surface tension of about 54 provides a high speed drop generator capable of operating at about 12 KHz. Reducing the shelf length to about 55 microns, in combination with rotating the substrate at an angle to the scan direction, permits maximum drop generator operation as high as about 20 KHz. As a consequence of employing pigment-based inks, high optical densities are realized, along with excellent permanence (no fade and better waterfastness), and good stability. The combination of preferred ink and pen architecture provides good drop generator stability.
摘要翻译：喷墨墨滴喷射系统包括打印头部件和油墨的组合，其相互调节以最大化打印头的操作特性以及油墨的打印质量和干燥时间。使用大约55微米的短搁架（墨水源到墨水喷射元件的距离）提供了非常高的速度补充。然而，它具有高速补充的特点，它具有过度阻尼的倾向。为了提供必要的阻尼，油墨的粘度应大于约2cp。以这种方式，墨水和结构共同工作，提供了一个可在高频下稳定运行的调谐系统。油墨中颜料和分散剂的组合的一个优点是得到较高的粘度。如果墨水没有足够的干燥速度，高速度就没有什么价值。这通过向油墨中加入醇或醇和表面活性剂来实现。快速干燥时间通过醇，例如异丙醇与4或5个碳醇或与异丙醇加表面活性剂的组合来实现。短架（90-130微米），油墨粘度约为3cp，表面张力约为54的一个优选实施例提供了能够在约12KHz下操作的高速液滴发生器。将搁板长度减小至约55微米，与基板以扫描方向成一定角度的旋转结合使得最大的液滴发生器运转高达约20KHz。作为使用颜料基油墨的结果，实现了高的光密度，以及优异的耐久性（不褪色和更好的耐水性）和良好的稳定性。优选的墨水和笔结构的组合提供了良好的液滴发生器稳定性。

33. 发明授权

US5719965A Higher precision look-up table from lower precision look-up table for improved tonal adjustment 失效
标题翻译：更精确的查找表，从低精度查找表，以改善色调调整
公开(公告)号：US5719965A
公开(公告)日：1998-02-17
申请号：US354564
申请日：1994-12-13
申请人： Greg A. Degi , Robert G. Gann , Steven L. Webb
发明人： Greg A. Degi , Robert G. Gann , Steven L. Webb
IPC分类号： G09G5/36 , G06T1/00 , G06T1/20 , G06T5/00 , G09G5/00 , G09G5/06 , H04N1/407 , H04N1/46 , H04N1/60 , G06K9/40 , G03B3/00
CPC分类号： H04N1/407
摘要： An image capture system comprising a scanner having a 10-bit analog-to-digital converter. The scanner operates within an environment that includes a host computer that is configured to accept 8-bit data. The contrast enhancement of the scanner is improved by applying an improved tonal adjustment on a scanned image. The host computer connected to the scanner provides an 256-value to 256-value look-up table (i.e., the 8-bit tone map) to the scanner. The scanner generates an interpolated 1024-level to 256-level look-up table (i.e., a 10-bit tone map) from the 256-level to 256-level look-up table. The 1024-value to 256-value look-up table is generated by using linear interpolation and extrapolation. The scanner can thus provide better contrast enhancements without having to modify the software running on the host computer.
摘要翻译：一种包括具有10位模数转换器的扫描器的图像捕获系统。扫描仪在包括配置为接受8位数据的主机的环境中运行。通过在扫描图像上应用改进的色调调整来提高扫描仪的对比度增强。连接到扫描器的主计算机向扫描仪提供256值到256值的查找表（即8位色调图）。扫描仪从256级到256级查找表生成内插的1024级至256级查找表（即，10位色调映射）。通过使用线性插值和外推来生成1024值到256值的查找表。因此，扫描仪可以提供更好的对比度增强，而无需修改在主机上运行的软件。

34. 发明授权

US5654809A Method and apparatus for dynamic white point adjustment 失效
标题翻译：用于动态白点调整的方法和装置
公开(公告)号：US5654809A
公开(公告)日：1997-08-05
申请号：US594192
申请日：1996-01-31
申请人： Edward S. Beeman , Steven L. Webb , Michael J. Steinle , Robert G. Gann , Brian L. Hastings , Greg A. Degi
发明人： Edward S. Beeman , Steven L. Webb , Michael J. Steinle , Robert G. Gann , Brian L. Hastings , Greg A. Degi
IPC分类号： H04N1/028 , H04N1/04 , H04N1/40 , H04N1/48 , H04N9/04
CPC分类号： H04N1/40056 , H04N1/482
摘要： A method for dynamically determining and adjusting the color balance of the light strip along one edge of the scanned area and adjusting the gains of independently controlled red, green and blue channels of a CCD array. Alternatively, the gain of one color channel may be held constant and measured to determine the light intensity of the light source as the temperature of the light source varies. The power to the light is then changed to maintain the intensity of the light source within a predetermined range. The three color channels are then compared to a predetermined color balance. If the color balance is outside of a predetermined range, the other two color channels gains are varied in order to maintain the color balance between the three color channels.
摘要翻译：一种用于动态地确定和调整沿着扫描区域的一个边缘的光条的颜色平衡并调整CCD阵列的独立控制的红色，绿色和蓝色通道的增益的方法。或者，一个颜色通道的增益可以保持恒定并且被测量以确定随着光源的温度变化的光源的光强度。然后改变光的功率以将光源的强度保持在预定范围内。然后将三个颜色通道与预定的颜色平衡进行比较。如果颜色平衡超出预定范围，则为了保持三个颜色通道之间的颜色平衡，改变另外两个颜色通道增益。

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