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21. 发明授权

US06918651B2 Scan axis assembly for a printer 失效
标题翻译：扫描轴组件为打印机
公开(公告)号：US06918651B2
公开(公告)日：2005-07-19
申请号：US10424423
申请日：2003-04-28
申请人： Jorge Menendez , Marcelo Ymbern , Francesc Subirada
发明人： Jorge Menendez , Marcelo Ymbern , Francesc Subirada
IPC分类号： B41J3/54 , B41J29/02 , B41J23/00
CPC分类号： B41J29/02 , B41J3/543
摘要： A scan axis assembly for a printer comprises first and second tracks, the tracks being rigidly located relative to one another by one or more track support members, and each track being arranged to support a print carriage such that the print carriage may move along the track to traverse a print zone.
摘要翻译：用于打印机的扫描轴组件包括第一和第二轨道，轨道通过一个或多个轨道支撑构件相对于彼此刚性地定位，并且每个轨道布置成支撑打印托架，使得打印托架可以沿轨道移动穿越打印区域。

22. 发明授权

US06648444B2 High throughput parallel drop detection scheme 有权
标题翻译：高吞吐量并行丢包检测方案
公开(公告)号：US06648444B2
公开(公告)日：2003-11-18
申请号：US09987574
申请日：2001-11-15
申请人： Jose Luis Valero , Francesc Subirada
发明人： Jose Luis Valero , Francesc Subirada
IPC分类号： B41J29393
CPC分类号： B41J29/393 , B41J2/16579
摘要： The present invention is directed to a method and apparatus for testing the operational status of printhead nozzles. High throughput drop detection devices are used to detected ink drops that are fired from the printhead nozzles, and the operational status is determined from the ink drop characteristics. The ink drop characteristics may include the presence or absence of an ink drop. Ink drop characteristics may also include the size and the location of an ink drop. The drop detection devices are capable of detecting a plurality of ink drops that are ejected substantially simultaneously.
摘要翻译：本发明涉及一种用于测试打印头喷嘴的操作状态的方法和装置。高通量下降检测装置用于检测从打印头喷嘴喷射的墨滴，并根据墨滴特性确定操作状态。墨滴特性可包括墨滴的存在或不存在。墨滴特性还可以包括墨滴的尺寸和位置。液滴检测装置能够检测基本上同时喷射的多个墨滴。

23. 发明授权

US06623096B1 Techniques for measuring the position of marks on media and for aligning inkjet devices 失效
标题翻译：用于测量介质上标记位置和排列喷墨设备的技术
公开(公告)号：US06623096B1
公开(公告)日：2003-09-23
申请号：US09627509
申请日：2000-07-28
申请人： Jorge Castano , Francesc Subirada
发明人： Jorge Castano , Francesc Subirada
IPC分类号： B41J201
CPC分类号： H04N1/50 , B41J2/2135 , B41J19/145
摘要： An optical sensor for detecting the position of marks on a medium, wherein relative motion is provided between the optical sensor and the medium during an optical sensing operation. The optical sensor produces an electrical sensor signal, and has a field of view at the media in a direction of the relative movement. The marks have a nominal dimension in the direction of the relative movement, and the field of view is larger than the nominal dimension. This produces a sensor signal with a clear and relatively sharp peak in response to scanning the media mark. A method of sensing directional aberrations among ink-jet nozzles of a plurality of printheads mounted on a scanning carriage is described, which includes printing an alignment pattern on a print medium, the alignment pattern comprising a set of target marks printed using a subset of the nozzles on each of the plurality of printheads, and a set of monochrome marks printed using a subset of the nozzles from only one of the printheads, each of the monochrome marks positioned in a nominal position with respect to a corresponding plurality of the target marks, and optically scanning the alignment pattern to determine measurements of relative positions between the monochrome marks and corresponding target marks. In one embodiment, the target marks include an elongated first mark disposed in a scan direction of scanning movement of the scanning carriage, and an elongated second mark disposed in a media moving direction transverse to the scan direction. In another embodiment, the target marks are patches of similar size to the monochrome marks.
摘要翻译：一种用于检测介质上的标记位置的光学传感器，其中在光学感测操作期间在光学传感器和介质之间提供相对运动。光学传感器产生电传感器信号，并且在相对移动的方向上在介质处具有视场。标记在相对运动的方向上具有标称尺寸，并且视野大于标称尺寸。这就产生了响应于扫描介质标记而具有清晰而相对尖锐的峰值的传感器信号。一种感测安装在扫描托架上的多个打印头的喷墨喷嘴之间的方向像差的方法被描述，其中包括打印对准图案在打印介质上，所述对准图案包括使用所述多个打印头中的每一个上的所述喷嘴的子集打印的一组目标标记，以及使用来自所述打印头中的一个的喷嘴的一部分印刷的一组单色标记相对于相应的多个目标标记位于标称位置的单色标记，以及光学扫描对准图案以确定单色标记与对应的目标标记之间的相对位置的测量。在一个实施例中，目标标记包括沿着扫描滑架的扫描运动的扫描方向设置的细长的第一标记和沿横向于扫描方向的介质移动方向设置的细长的第二标记。在另一个实施例中，目标标记是与单色标记相似尺寸的贴片。

24. 发明授权

US07287824B2 Method and apparatus for assessing nozzle health 有权
标题翻译：评估喷嘴健康的方法和装置
公开(公告)号：US07287824B2
公开(公告)日：2007-10-30
申请号：US10892712
申请日：2004-07-16
申请人： Francesc Subirada , Joan Manuel Garcia , Santiago Garcia Reyero
发明人： Francesc Subirada , Joan Manuel Garcia , Santiago Garcia Reyero
IPC分类号： B41J29/393
CPC分类号： B41J2/16579
摘要： A technique for assessing nozzle health of a printhead nozzle array in a printing system includes printing a swath portion of an image, optically scanning the printed swath portion to capture a scanned image, comparing an expected image of the swath portion of the image with the scanned image, and assessing whether any nozzles of the nozzle array have malfunctioned. A sensor can be mounted on a printhead carriage to accomplish the image capture.
摘要翻译：用于评估打印系统中打印头喷嘴阵列的喷嘴健康状况的技术包括打印图像的条纹部分，光学地扫描打印的纹条部分以捕获扫描图像，将图像的条纹部分的预期图像与扫描的图像，并评估喷嘴阵列中的任何喷嘴是否发生故障。可以将传感器安装在打印头托架上以完成图像捕获。

25. 发明授权

US07207640B2 Progressive and fast printmask revision based on incremental changes to printing element condition 有权
标题翻译：基于对打印元素条件的增量更改的逐行和快速的打印掩码修订
公开(公告)号：US07207640B2
公开(公告)日：2007-04-24
申请号：US10994766
申请日：2004-11-20
申请人： Santiago Garcia Reyero , Joan-Manel Garcia , Francesc Subirada
发明人： Santiago Garcia Reyero , Joan-Manel Garcia , Francesc Subirada
IPC分类号： B41J29/393 , B41J2/205
CPC分类号： B41J2/2139 , G06K15/107
摘要： When condition of a printing element (e.g. inkjet nozzle) changes, essentially full mask rows invoking the element are redone from scratch, best so as to fully satisfy pixel-grid neighbor conditions. This is faster than redoing a whole mask as in prior popup or precook /reheat methods, and yields better printouts than prior row-by-row mask revision (e.g. directly replacing a weak nozzle by a good one across whole rows). This method is best independent of prior mask versions, and uses no prebuilt matrix of backup/alternate entries. The number of rows redone is typically 7% to 14% below a nominal/baseline value.
摘要翻译：当打印元件（例如喷墨喷嘴）的状况改变时，基本上完全满足像素网格相邻条件的调用该元件的完整的掩模行是从头重做的。这比在以前的弹出或预先/预热/再加热方法中重做整个面罩更快，并且比现有的逐行掩模版本更好地打印出更好的打印输出（例如，直接用整个行代替弱喷嘴）。该方法最好与先前的掩码版本无关，并且不使用备份/备用条目的预构建矩阵。重新排列的行数通常比标称值/基准值低7％至14％。

26. 发明授权

US06494558B1 Compensation for marking-position errors along the pen-length direction, in inkjet printing 有权
标题翻译：在喷墨打印中，沿笔长度方向的标记位置误差补偿
公开(公告)号：US06494558B1
公开(公告)日：2002-12-17
申请号：US09693524
申请日：2000-10-20
申请人： Jose Julio Doval , Albert Serra , Francesc Subirada
发明人： Jose Julio Doval , Albert Serra , Francesc Subirada
IPC分类号： B41J201
CPC分类号： B41J2/1755 , B41J2/1752 , B41J2/1753 , B41J2/2135 , B41J19/145 , B41J29/393
摘要： A calibration technique, for a printer having a plurality of different color ink printheads, which includes printing and scanning a test pattern. The test pattern is printed by each printhead printing a plurality of swaths having a length and distanced apart from each other. An optical sensor is used to scan the printed test pattern. Calibration is performed for each head by reading the swath length and the relative spacing of the swath and comparing the length to the spacing. This comparison is used to find the directional error for each head.
摘要翻译：一种用于具有多个不同颜色墨水打印头的打印机的校准技术，其包括打印和扫描测试图案。测试图案由每个打印头打印出多个长度彼此远离的条带打印。光学传感器用于扫描印刷的测试图案。通过读取条带长度和条纹的相对间距并将长度与间距进行比较，对每个头进行校准。该比较用于找出每个头的方向误差。

27. 发明授权

US06352331B1 Detection of non-firing printhead nozzles by optical scanning of a test pattern 失效
标题翻译：通过光学扫描测试图案来检测非点火打印头喷嘴
公开(公告)号：US06352331B1
公开(公告)日：2002-03-05
申请号：US08811412
申请日：1997-03-04
申请人： Chris T. Armijo , Gonzalo Gaston , Javier Lagares , Antoni Gil , Francesc Subirada , Francisco Guerrero
发明人： Chris T. Armijo , Gonzalo Gaston , Javier Lagares , Antoni Gil , Francesc Subirada , Francisco Guerrero
IPC分类号： B41J29393
CPC分类号： B41J2/16579
摘要： A nozzle detection test pattern has been developed which can be sensed by an optical sensor located on an inkjet printer carriage. By having the same nozzle print ink drops on multiple pixels to form a single thickened test line during multiple passes of the printhead, it is possible to thereafter scan across such test line and automatically determine by the light contrast ratios which nozzles are not firing properly. A green light LED is used to illuminate the magenta, cyan and black test patterns as they are being sensed, and a blue light LED is used to illuminate the yellow test pattern as it is being sensed. A separate test pattern is used for each printhead ink color. The test pattern constitutes six rows with forty test lines on each row for a printhead having 240 active nozzles.
摘要翻译：已经开发出可以由位于喷墨打印机托架上的光学传感器感测的喷嘴检测测试图案。通过在打印头的多次通过期间使相同的喷嘴印刷墨水滴在多个像素上以形成单个加厚的测试线，则可以在此之后扫描这样的测试线并且通过光对比度自动确定哪些喷嘴不能正确地发射。绿光LED用于在被感测到的品红色，青色和黑色测试图案上照亮，并且蓝光LED用于在被感测时照亮黄色测试图案。每个打印头墨水颜色都使用单独的测试图案。测试图形构成六行，每列具有四十条测试线，用于具有240个主动喷嘴的打印头。

28. 发明授权

US07417768B1 Apparatus and method for mitigating colorant-deposition errors in incremental printing 有权
标题翻译：用于减轻增量印刷中着色剂沉积误差的装置和方法
公开(公告)号：US07417768B1
公开(公告)日：2008-08-26
申请号：US09688610
申请日：2000-10-13
申请人： David H. Donovan , Miquel Boleda , Johan Lammens , Francesc Subirada
发明人： David H. Donovan , Miquel Boleda , Johan Lammens , Francesc Subirada
IPC分类号： G06K15/00 , H04N1/40
CPC分类号： H04N1/4015 , G06K15/102 , G06K2215/0094
摘要： CDE is measured for each nozzle array, to enable modification of a mapping between input image data and intended printing marks to compensate for the CDE. Printing proceeds using the modified mapping, which is either an optical-density transformation of data to printing marks or a spatial-resolution relation between image data and intended pixel grid. The density transformation preferably includes a dither mask (but can be error-diffusion thresholding instead); the resolution relation includes scaling of image data to pixel grid. For some invention forms, CDE includes printing-density defects, measured and used to derive a correction pattern—in turn used to modify halftone thresholding. For other forms CDE includes swath-height error, but still this is measured and used to derive a correction pattern etc. For still other forms, however, CDE includes swath-height error and correction takes the form of scaling. When the halftoning forms are applied to plural-pass printing, a printmask is used to map the dither mask etc. to the nozzle array, enabling application of the correction to the mask. Halftone forms ideally uses a gamma function, though threshold or linear corrections are possible instead. Halftone correction is effective in single-pass printing. The swath-height correction can modify heights of all nozzle arrays. Computations are done at most only once for a full image.
摘要翻译：测量每个喷嘴阵列的CDE，以便能够修改输入图像数据和预期打印标记之间的映射，以补偿CDE。使用修改的映射进行打印，该映射是数据到打印标记的光密度变换或图像数据与预期像素网格之间的空间分辨率关系。密度变换优选包括抖动掩模（但可以是误差扩散阈值代替）; 分辨率关系包括将图像数据缩放到像素网格。对于一些发明形式，CDE包括测量并用于导出校正模式的印刷密度缺陷，反过来用于修改半色调阈值。对于其他形式，CDE包括扫描高度误差，但仍然被测量并用于导出校正模式等。然而，对于其他形式，CDE包括幅高错误，校正采用缩放的形式。当将半色调形式应用于多遍打印时，使用打印掩模将抖动掩模等映射到喷嘴阵列，使得能够对掩模应用校正。半色调形式理想地使用伽玛功能，尽管可以改变阈值或线性校正。半色调校正在单程打印中有效。扫描高度校正可以改变所有喷嘴阵列的高度。对于完整图像，计算最多只能完成一次。

29. 发明授权

US07413276B2 Diagnostic for visual detection of media advance errors 有权
标题翻译：诊断视觉检测介质提前错误
公开(公告)号：US07413276B2
公开(公告)日：2008-08-19
申请号：US09941884
申请日：2001-08-28
申请人： Joan Manuel Garcia , Francesc Subirada
发明人： Joan Manuel Garcia , Francesc Subirada
IPC分类号： B41J29/393
CPC分类号： B41J2/2132
摘要： A diagnostic technique allows an easy visual detection of poor media advance calibration. The diagnostic technique employs a print mode that prints different areas of the plot at different passes with a controlled amount of advances between them. The dot positioning error in the different areas has a non-systematic nozzle contribution, that tends to cancel out, and a systematic contribution due to the accumulative media advance error. Different patterns can be used to make the dot positioning error due to the accumulative media advance error show up. By increasing the number of media advances between the printing of sets of pixels, e.g. pixels in a horizontal line, the effect of accumulated errors and the apparent visual effect is increased.
摘要翻译：诊断技术允许容易的视觉检测差的介质提前校准。诊断技术采用打印模式，其打印不同区域的不同区域，并在它们之间具有可控的进度。不同区域的点定位误差具有趋于抵消的非系统喷嘴贡献，以及由于累积介质提前误差引起的系统贡献。可以使用不同的图案，由于累积的介质提前错误显示而导致点定位错误。通过增加打印像素组之间的媒体进度的数量，例如水平线上的像素，累积误差的影响和视觉效果增加。

30. 发明授权

US07023581B2 Compensating for drift and sensor proximity in a scanning sensor, in color calibrating incremental printers 有权
公开(公告)号：US07023581B2
公开(公告)日：2006-04-04
申请号：US09919260
申请日：2001-07-30
申请人： Pau Soler , Roger Vinas , Francisco Javier Rodriguez , Francesc Subirada
发明人： Pau Soler , Roger Vinas , Francisco Javier Rodriguez , Francesc Subirada
IPC分类号： B41J1/00 , G06F15/00 , H04N1/46
CPC分类号： H04N1/4078 , H04N1/6033
摘要： To compensate for color-calibration sensor drift, a measurement of bare-print-medium tonal value is taken in immediate time juxtaposition to each color test pattern; measured bare-medium tone is then used to correct color-patch readings. A line sensor or the like, on the scanning printhead carriage, is used for the reading. Preferably two such readings are taken, one at each end of each test pattern; ideally separate scans of the bare medium are taken without any test-pattern patch to develop longterm and short-term drift profiles, for refining the corrections. To compensate for calibration error due to runout in the carriage track—particularly for wide-bed printers—sensor response to bare medium is used to represent variations in carriage-to-medium spacing along the track; these variations are corrected in later sensor use.

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