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1. 发明授权

US6145959A Swath density control to improve print quality and extend printhead life in inkjet printers 失效
标题翻译：幅面密度控制可提高打印质量，延长喷墨打印机的打印头寿命
公开(公告)号：US6145959A
公开(公告)日：2000-11-14
申请号：US995774
申请日：1997-12-22
申请人： Mark D. Lund , Rory A. Heim , Steven T. Castle
发明人： Mark D. Lund , Rory A. Heim , Steven T. Castle
IPC分类号： B41J2/01 , B41J2/505 , B41J2/145 , B41J2/15 , B41J29/38 , B41J29/393
CPC分类号： B41J2/0458 , B41J2/04515 , B41J2/04528 , B41J2/0454 , B41J2/04563 , B41J2/5056
摘要： An inkjet printer uses a printhead that passes repeatedly across a print medium in individual swaths. The printhead has individual nozzles that are fired repeatedly during each printhead swath to apply an ink pattern to the print medium. Before any given swath, the printer analyzes factors that might require a reduction in print density. Anticipated printhead temperature is one factor that might require a reduction in print density. The printer monitors the print density and peak printhead temperature during each printhead swath. It then uses these values to calculate, prior to each new swath, a maximum permissible print density. If a reduction in print density is required, the printer temporarily disables selected nozzles to produce a reduced-height swath rather than pausing between swaths or reducing the printhead velocity relative to the page.
摘要翻译：喷墨打印机使用在单独的条中反复穿过打印介质的打印头。打印头具有单独的喷嘴，其在每个打印头条带期间重复地被喷射以将油墨图案施加到打印介质。在任何给定的条纹之前，打印机分析可能需要降低打印浓度的因素。预期的打印头温度是可能需要降低打印浓度的一个因素。打印机在每个打印头条中监视打印浓度和打印头顶部峰值温度。然后，使用这些值来计算每个新条纹之前的最大允许打印浓度。如果需要降低打印浓度，打印机会暂时禁用所选择的喷嘴以产生较小的高度，而不是在幅之间暂停或相对于页面降低打印头速度。

2. 发明授权

US5044796A Bidirectional printing method in accordance with vertical breaks 失效
标题翻译：双向打印方式按照垂直间隔
公开(公告)号：US5044796A
公开(公告)日：1991-09-03
申请号：US299105
申请日：1989-01-19
申请人： Mark D. Lund
发明人： Mark D. Lund
IPC分类号： B41J2/01 , B41J2/505 , B41J2/51 , B41J2/525 , B41J19/14 , G06K15/10
CPC分类号： B41J2/5056 , B41J19/142 , G06K15/10 , G06K2215/111
摘要： The invented bidirectional graphics printing method includes software which first receives data describing at least part of an image to be printed, and then looks for breaks in the image. When a break is detected, bidirectional printing is allowed if such printing would increase throughput. If no break is detected, the next printhead pass is in the same direction as the previous pass.

3. 发明授权

US5659342A On-page inkjet printhead spitting system 失效
标题翻译：页内喷墨打印头吐痰系统
公开(公告)号：US5659342A
公开(公告)日：1997-08-19
申请号：US316150
申请日：1994-09-30
申请人： Mark D. Lund , Jefferson P. Ward
发明人： Mark D. Lund , Jefferson P. Ward
IPC分类号： B41J2/175 , B41J2/01 , B41J2/165
CPC分类号： B41J2/16526 , B41J2002/1657
摘要： An on-page inkjet printhead spitting system purges the printhead nozzles across the printed page, and occasionally in the conventional service station spittoon. In addition to the image-forming droplets, extra purging droplets are fired to maintain pen health. To determine when to purge each nozzle, the number of times each nozzle is fired to print the image is counted or estimated, or printhead characteristics are monitored. The purging dots may be located on the page, in the spittoon, or both. On the page, the purging dots may be hidden from view, in the image background or over the image dots, or hidden in plain sight adjacent image dots, in speed bars, in a watermark type design, or in a repeating pattern. Use of this on-page spitting system conserves ink and improves throughput of the printing mechanism, without requiring any sacrifice in the print quality appearance to the naked eye.
摘要翻译：页面上的喷墨打印头吐痰系统将打印头喷嘴清洁印刷在页面上，偶尔在常规维修站痰盂中清洗。除了成像液滴之外，还会额外吹扫液滴以维持笔的健康。为了确定何时清洗每个喷嘴，计算或估计每个喷嘴喷射图像以打印图像的次数，或者监视打印头特性。清洗点可以位于页面上，痰盂中，或两者中。在页面上，清除点可以在视觉上，图像背景中或在图像点上隐藏，或者隐藏在相邻图像点，速度条，水印类型设计或重复图案中的平视中。使用这种页面上的吐痰系统可以节省油墨并提高打印机构的产量，而不需要任何牺牲肉眼的打印质量外观。

4. 发明授权

US5650858A Pixel image edge-smoothing method and system 失效
标题翻译：像素图像边缘平滑方法和系统
公开(公告)号：US5650858A
公开(公告)日：1997-07-22
申请号：US426460
申请日：1995-04-17
申请人： Mark D. Lund
发明人： Mark D. Lund
IPC分类号： H04N1/409 , G06K15/02 , G06T3/40 , H04N1/40 , G06K9/40 , G06K9/62
CPC分类号： G06T3/403 , G06K15/02
摘要： Method and system for increasing the effective resolution at which a lower resolution input pixel image is printed on a higher resolution dot matrix printer such an ink-jet or laser printer are described. Illustratively, a 300-dpi by 300-dpi input pixel image is prepared at the printer for printing at 600-dpi by 600-dpi, with otherwise jagged edges appropriately smoothed to produce high print quality. Each pixel and its predefined neighboring pixels in the input image are compared to stored image templates and when a match is found, the corresponding quad pixel, or super-pixel, to be output is altered from a mere replication of the input pixel, thereby to eliminate jagged edges. Memory space in the printer is reduced by storing templates that represent only a fraction of the problem patterns, the input pixel image being reoriented between comparisons in order to account for all possible cases. If it is determined that there are gray-scaled pixels within the neighborhood surrounding and including a given pixel of the input pixel image, the corresponding super-pixel produced at the output for printing preserves the gray-scale of the original.
摘要翻译：描述了用于增加在诸如喷墨或激光打印机的更高分辨率点阵打印机上打印较低分辨率输入像素图像的有效分辨率的方法和系统。说明性地，在打印机处准备300dpi×300dpi输入像素图像，以600dpi×600dpi打印，否则锯齿边缘被适当平滑以产生高打印质量。将输入图像中的每个像素及其预定义的相邻像素与存储的图像模板进行比较，并且当找到匹配时，要从输出像素的复制改变要输出的相应的四像素或超像素，从而消除锯齿状边缘。通过存储仅代表问题模式的一部分的模板来减少打印机中的存储器空间，输入像素图像在比较之间重新定向，以便考虑所有可能的情况。如果确定在邻近周围并且包括输入像素图像的给定像素中存在灰度像素，则用于打印的输出处产生的对应超像素保留原始灰度。

5. 发明授权

US06650793B1 Multiple data manipulation algorithms for text quality enhancement 失效
标题翻译：用于文本质量增强的多种数据处理算法
公开(公告)号：US06650793B1
公开(公告)日：2003-11-18
申请号：US09541798
申请日：2000-03-31
申请人： Mark D. Lund , Thomas B. Pritchard
发明人： Mark D. Lund , Thomas B. Pritchard
IPC分类号： G06K932
CPC分类号： H04N1/40068 , G06K15/02 , G06K15/18 , G06K15/1822 , G06T3/403
摘要： Multiple algorithms are applied to expand input image data of a variety of lower resolutions to output image data of a variety of higher resolutions with enhanced text quality, particularly in the black datapath controlling an output device such as an inkjet or laser printer. Enhancement techniques include edge smoothing, bit stripping for large drop weight pens, and drop-weight based ink depletion. Embodiments provide algorithms that convert 600×600 dpi input resolution data to 1200×600 dpi output resolution image data or 300×300 to 600×300 dpi resolution (i.e., asymmetric 2:1 ratio resolution conversion along mutually perpendicular axes), including text edge smoothing, while causing minimal change to gray scaled (halftoned) data within images. The invention applies to other resolutions as well. Some embodiments include unidirectional bitstripping that preserves 1200 dpi edges while applying output pixels at only 600 dpi from 1200 dpi resolution output image data. Some embodiments include drop-weight based depletion to adjust the average ink flux to 32 ng per {fraction (1/600)}th inch cell, thereby preventing excess ink application at high output resolutions, e.g., 1200×600 dpi. In various embodiments, operations are performed in hardware modules and/or performed cooperatively as an integrated process to meet system throughput requirements.
摘要翻译：应用多种算法来扩展各种较低分辨率的输入图像数据，以输出具有增强文本质量的各种较高分辨率的图像数据，特别是在控制诸如喷墨或激光打印机的输出设备的黑色数据路径中。增强技术包括边缘平滑，大型液滴重量笔的位剥离和基于液滴重量的油墨消耗。实施例提供了将600x600dpi输入分辨率数据转换为1200×600dpi输出分辨率图像数据或300×300至600×300dpi分辨率（即，沿相互垂直轴的不对称2:1比例分辨率转换）的算法，包括文本边缘平滑，同时使灰度变化最小图像中的缩放（半色调）数据。本发明也适用于其他决议。一些实施例包括保持1200dpi边缘的单向位条，同时从1200dpi分辨率输出图像数据仅以600dpi应用输出像素。一些实施方案包括以重量为基础的耗尽，以将平均墨水通量调整至32ng / {部分（1/600英寸的电池，从而防止在高输出分辨率下的多余的墨水施加，例如1200×600dpi）。在各种实施方案中，硬件模块和/或协同地执行为集成过程以满足系统吞吐量要求。

6. 发明授权

US06598965B1 Fixer usage generation technique for inkjet printers 有权
标题翻译：喷墨打印机的定影剂使用生成技术
公开(公告)号：US06598965B1
公开(公告)日：2003-07-29
申请号：US09452279
申请日：1999-11-30
申请人： Mark D. Lund , Ngoc-Diep T. Nguyen , Charles S. Woodruff
发明人： Mark D. Lund , Ngoc-Diep T. Nguyen , Charles S. Woodruff
IPC分类号： B41J217
CPC分类号： B41J2/2114
摘要： Disclosed is a system in an inkjet printer for determining the amount of a fixer to be applied to a medium. The system comprises a fixer generation circuit where the fixer generation circuit determines an amount of a fixer to be applied to a dot location on a medium based on an amount of ink to be applied to the dot location. A bloom encoder circuit is also disclosed for identifying amounts of fixer to be deposited adjacent to dot locations containing ink.
摘要翻译：公开了一种喷墨打印机中用于确定施加到介质的定影剂的量的系统。该系统包括固定器产生电路，其中固定器产生电路基于要施加到点位置的墨水量来确定要施加到介质上的点位置的定影剂的量。还公开了一种花式编码器电路，用于识别邻近含有墨水的点位置沉积的定影剂的量。

7. 发明授权

US5504471A Passively-multiplexed resistor array 失效
标题翻译：被动复用电阻阵列
公开(公告)号：US5504471A
公开(公告)日：1996-04-02
申请号：US123482
申请日：1993-09-16
申请人： Mark D. Lund
发明人： Mark D. Lund
IPC分类号： B41J2/355 , G01D15/16 , H01C13/02 , H01C1/01
CPC分类号： B41J2/355
摘要： A passively-multiplexed resistor array has rows and columns of conductors. Resistors span the intersections of the conductors, and one or more selected resistors may be energized by energizing the corresponding row(s) and column(s). However, other, unselected, resistors may also be partially energized. By adding additional rows or columns of "minimizer" resistors, the maximum power in unselected resistors may be reduced. The minimizer resistors are electrically connected in the passively-multiplexed resistor array but do not perform the function of the other resistors in the array.
摘要翻译：被动复用的电阻阵列具有行和列的导体。电阻器跨越导体的交叉点，并且一个或多个选择的电阻器可以通过激励相应的行和列来激励。然而，其他未选择的电阻器也可以部分地通电。通过添加额外的“最小化”电阻的行或列，可以减少未选择的电阻器中的最大功率。最小电阻电阻器被电连接在被动复用的电阻器阵列中，但不执行阵列中的其它电阻器的功能。

8. 发明授权

US06850339B1 Resolution enhancement of half-toned black data transmitted with color data 有权
标题翻译：使用彩色数据传输的半色调黑色数据的分辨率增强
公开(公告)号：US06850339B1
公开(公告)日：2005-02-01
申请号：US09533450
申请日：2000-03-23
申请人： Mark D. Lund
发明人： Mark D. Lund
IPC分类号： B41J2/52 , B41J2/505 , G06K15/02 , G06T1/00 , G06T5/00 , G06T5/20 , H04N1/387 , H04N1/46 , H04N1/60 , C06K1/00
CPC分类号： B41J2/5058 , G06K15/02 , G06K2215/0057 , G06K2215/0071 , G06T3/4053 , H04N1/4092
摘要： When black regions are adjacent to color regions, the adjacent black regions are encoded (rendered) at the resolution of the color regions (e.g., 300 dpi) even though the printer has the capability of printing black at a higher resolution (e.g., 600 dpi). To make full use of the 600 dpi resolution of the printer, the black pixels are separated from the color pixels. The 300 dpi resolution black pixel field is converted to a 600 dpi black image field. A window surrounding a selected group of (600 dpi) black/white target pixels is chosen. The pixels in the window are applied to a logic circuit having a plurality of logical conditions. As a result of the logic processing, values of each of the target pixels can be changed to a different pixel value to avoid jagged edges in the printed images, thereby providing a pseudo-600 dpi resolution for the target pixels. The logical operations are performed until all of the pixels have values determined by the logic circuit. The resulting processed pixel field provides a more satisfactory printed image. The window is selected so that the pixel fields can be represented by word-length data groups. Black pixels rendered at the higher resolution are generally unaffected by the logic circuit. Thus, black pixels are rendered at two resolutions but printed at the same resolution.
摘要翻译：当黑色区域与颜色区域相邻时，即使打印机具有以更高分辨率（例如，600dpi）打印黑色的能力，相邻黑色区域以彩色区域的分辨率（例如，300dpi）被编码（渲染））。为了充分利用打印机的600 dpi分辨率，黑色像素与彩色像素分离。将300dpi分辨率的黑色像素场转换成600dpi的黑色图像场。选择一组（600dpi）黑/白目标像素周围的窗口。窗口中的像素被施加到具有多个逻辑条件的逻辑电路。作为逻辑处理的结果，可以将每个目标像素的值改变为不同的像素值，以避免打印图像中的锯齿状边缘，从而为目标像素提供伪600 dpi分辨率。执行逻辑运算，直到所有像素具有由逻辑电路确定的值。所得到的经处理的像素场提供更令人满意的打印图像。选择窗口，使得像素字段可以由字长数据组表示。以较高分辨率呈现的黑色像素通常不受逻辑电路的影响。因此，黑色像素以两个分辨率呈现，但以相同的分辨率打印。

9. 发明授权

US06804417B1 Pixel depletion technique 有权
标题翻译：像素耗尽技术
公开(公告)号：US06804417B1
公开(公告)日：2004-10-12
申请号：US09539546
申请日：2000-03-31
申请人： Mark D. Lund , Thomas B. Pritchard
发明人： Mark D. Lund , Thomas B. Pritchard
IPC分类号： G06K932
CPC分类号： G06T3/403 , G06K15/02 , G06K15/1871 , H04N1/40068 , H04N1/4092
摘要： Multiple algorithms are applied to expand input image data of a variety of lower resolutions to output image data of a variety of higher resolutions with enhanced text quality, particularly in the black datapath controlling an output device such as an inkjet or laser printer. Enhancement techniques include edge smoothing, bit stripping for large drop weight pens, and drop-weight based ink depletion. Embodiments provide algorithms that convert 600×600 dpi input resolution data to 1200×600 dpi output resolution image data or 300×300 to 600×300 dpi resolution (i.e., asymmetric 2:1 ratio resolution conversion along mutually perpendicular axes), including text edge smoothing, while causing minimal change to gray scaled (halftoned) data within images. The techniques can be applied to other resolutions as well. Some embodiments include unidirectional bitstripping that preserves 1200 dpi edges while applying output pixels at only 600 dpi from 1200 dpi resolution output image data. Some embodiments include drop-weight based depletion to adjust the average ink flux to 32 ng per {fraction (1/600)}th inch cell, thereby preventing excess ink application at high output resolutions, e.g., 1200×600 dpi. In various embodiments, operations are performed in hardware modules and/or performed cooperatively as an integrated process to meet system throughput requirements.
摘要翻译：应用多种算法来扩展各种较低分辨率的输入图像数据，以输出具有增强文本质量的各种较高分辨率的图像数据，特别是在控制诸如喷墨或激光打印机的输出设备的黑色数据路径中。增强技术包括边缘平滑，大型液滴重量笔的位剥离和基于液滴重量的油墨消耗。实施例提供了将600x600dpi输入分辨率数据转换为1200×600dpi输出分辨率图像数据或300×300至600×300dpi分辨率（即，沿相互垂直轴的不对称2:1比例分辨率转换）的算法，包括文本边缘平滑，同时使灰度变化最小图像中的缩放（半色调）数据。这些技术也可以应用于其他决议。一些实施例包括保持1200dpi边缘的单向位条，同时从1200dpi分辨率输出图像数据仅以600dpi应用输出像素。一些实施方案包括以重量为基础的耗尽，以将平均墨水通量调整至32ng / {部分（1/600英寸的电池，从而防止在高输出分辨率下的多余的墨水施加，例如1200×600dpi）。在各种实施方案中，硬件模块和/或协同地执行为集成过程以满足系统吞吐量要求。

10. 发明授权

US5270728A Raster imaging device speed-resolution product multiplying method and resulting pixel image data structure 失效
标题翻译：光栅成像设备速度分辨率乘法法和得到的像素图像数据结构
公开(公告)号：US5270728A
公开(公告)日：1993-12-14
申请号：US686898
申请日：1991-04-17
申请人： Mark D. Lund , Steven O. Miller
发明人： Mark D. Lund , Steven O. Miller
IPC分类号： B41J2/51 , B41J2/205 , B41J2/485 , B41J2/505 , G06K15/10 , G06T5/30 , H04N1/40 , H04N1/409 , B41J2/01
CPC分类号： B41J2/5058 , B41J2/2052 , G06K15/102 , H04N1/40068
摘要： A method for multiplying the speed-resolution product of a raster scanning or imaging device such as an inkjet printer, and a resulting pixel image data structure, are disclosed. Illustratively, a 300-dot per inch (dpi) by 600-dpi logical pixel image is mapped to a corresponding, non-overlapping physical dot image, and the printer's inkjets are fired responsive to the dot image to direct generally spherical ink droplets onto paper at 600-dpi resolution grid timing in order effectively to double the horizontal resolution of the printed pixel image, without increasing the firing rate of the print head. In order to accomplish this, and to avoid ink dot overlap, the printable pixel image is thinned before it is printed by a method that leaves no visible horizontal or vertical gaps by selectively turning off pixels within a `black` image that were on and that otherwise would result in ink dot overlap and slower print head speeds were the inkjets cycled at 600-dpi resolution timing. Pixel thinning is performed substantially without adversely affecting pixel image edge definition.

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