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1. 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.

2. 发明授权

US07027076B2 Media-position media sensor 有权
标题翻译：介质位置介质传感器
公开(公告)号：US07027076B2
公开(公告)日：2006-04-11
申请号：US10627674
申请日：2003-07-28
申请人： Rodrigo Ruiz , David Claramunt , Carles Flotats , Jose M Rio Doval , Francesc Subirada , Francisco Javier Rodriguez
发明人： Rodrigo Ruiz , David Claramunt , Carles Flotats , Jose M Rio Doval , Francesc Subirada , Francisco Javier Rodriguez
IPC分类号： B41J2/335
CPC分类号： B41J13/0009
摘要： A sensor system for detecting skew in print media along the feed path of a hardcopy device is disclosed. In one embodiment of the invention the system is arranged to generate a first image of a portion of print media at a first position along the feed path and to generate a second image of the portion of print media at a second position along the feed path, the system is arranged to compare the first and second images and thereby detect a change in the angle of skew of the media between the first and second positions.
摘要翻译：公开了一种用于检测打印介质沿着硬拷贝装置的进给路径的偏斜的传感器系统。在本发明的一个实施例中，系统被布置成在沿着进给路径的第一位置处产生打印介质的一部分的第一图像，并且沿着进给路径在第二位置处产生打印介质的该部分的第二图像，系统被布置为比较第一和第二图像，从而检测介质在第一和第二位置之间的倾斜角度的变化。

3. 发明授权

US07055925B2 Calibration and measurement techniques for printers 有权
标题翻译：打印机的校准和测量技术
公开(公告)号：US07055925B2
公开(公告)日：2006-06-06
申请号：US10632011
申请日：2003-07-31
申请人： Francesc Subirada , David Gaston , Oscar Ciordia
发明人： Francesc Subirada , David Gaston , Oscar Ciordia
IPC分类号： B41J29/393
CPC分类号： H04N1/23
摘要： Techniques for calibrating a scanner mounted on a scanning carriage of an image forming device. In one embodiment, a method of calibrating an optical sensor of a color image forming device includes positioning a prefabricated optical sensor target at the service area of the image forming device, the target including a plurality of target patches of predetermined different colors, moving the carriage to the service area, acquiring one or more images of the plurality of target patches, and using the one or more images to perform a plurality of calibrations of the optical sensor. In another embodiment, a method of measuring a reference position of a carriage mounted sensor array for an image forming device includes moving the carriage to a service area, generating a light beam from a carriage-mounted light source at a position adjacent an end of a sensor array, the light beam at an acute angle relative to an array axis, reflecting the beam from a reference target mounted in the service area at a known position, acquiring an image of the reflected beam by the sensor array, and using the location of a high intensity area of the image to determine the reference position of the optical sensor.
摘要翻译：用于校准安装在图像形成装置的扫描托架上的扫描仪的技术。在一个实施例中，一种校准彩色图像形成装置的光学传感器的方法包括将预制的光学传感器目标定位在图像形成装置的服务区域，目标包括多个预定不同颜色的目标斑块，移动滑架获取所述多个目标贴片的一个或多个图像，并使用所述一个或多个图像来执行所述光学传感器的多个校准。在另一个实施例中，一种测量用于图像形成装置的滑架安装的传感器阵列的基准位置的方法包括将滑架移动到服务区域，在邻近一端的位置处从支架安装的光源产生光束传感器阵列，相对于阵列轴成锐角的光束，将来自安装在服务区域中的参考目标的光束反射到已知位置，通过传感器阵列获取反射光束的图像，并使用图像的高强度区域来确定光学传感器的参考位置。

4. 发明授权

US06910754B2 Method and system for calibrating ink ejection elements in an image forming device 有权
标题翻译：用于校准图像形成装置中的喷墨元件的方法和系统
公开(公告)号：US06910754B2
公开(公告)日：2005-06-28
申请号：US10696311
申请日：2003-10-29
申请人： David Gaston , Francesc Subirada , Xavier Soler
发明人： David Gaston , Francesc Subirada , Xavier Soler
IPC分类号： B41J2/01 , B41J2/165 , B41J29/46 , B41J29/393
CPC分类号： B41J2/16579
摘要： By implementation of an optical scanner, the calibration of printheads of a printing mechanism may be performed in a relatively short period of time as compared to known techniques. In one respect, the time required to perform the calibration may be substantially reduced by virtue of the relatively wide field of view of the optical scanner. The relatively wide field of view generally enables for the scanning of test patterns to be performed with a relatively fewer number of scanning passes, thus reducing the time required to perform the scanning operations as well as the calibration operations. In addition, the scanning operations may yield relatively more accurate results as compared to known scanning operations. In one respect, optical scanners are capable of detecting smaller drops of ink on print media by virtue of their higher resolution capabilities. In another respect, all of the printed colors may be accurately detected through implementation of a red, green, blue (RGB) charge coupled device (CCD) contained in the optical scanners.
摘要翻译：通过实施光学扫描器，与已知技术相比，打印机构的打印头的校准可以在相对较短的时间段内进行。在一个方面，由于光学扫描仪的相对较宽的视野，进行校准所需的时间可以大大减少。相对较宽的视场通常能够以相对较少数量的扫描通过执行测试图案的扫描，从而减少执行扫描操作所需的时间以及校准操作。此外，与已知的扫描操作相比，扫描操作可以产生相对更准确的结果。在一个方面，光学扫描仪能够通过其较高的分辨率能力来检测打印介质上较小的墨滴。在另一方面，可以通过实现光学扫描仪中包含的红色，绿色，蓝色（RGB）电荷耦合器件（CCD）来精确地检测所有印刷的颜色。

5. 发明申请

US20050024410A1 Calibration and measurement techniques for printers 有权
标题翻译：打印机的校准和测量技术
公开(公告)号：US20050024410A1
公开(公告)日：2005-02-03
申请号：US10632011
申请日：2003-07-31
申请人： Francesc Subirada , David Gaston , Oscar Ciordia
发明人： Francesc Subirada , David Gaston , Oscar Ciordia
IPC分类号： B41J2/01 , H04N1/23 , B41J29/38
CPC分类号： H04N1/23
摘要： Techniques for calibrating a scanner mounted on a scanning carriage of an image forming device. The scanner array can also be used for print media border location.
摘要翻译：用于校准安装在图像形成装置的扫描托架上的扫描仪的技术。扫描仪阵列也可用于打印介质边框位置。

6. 发明授权

US06547362B2 Test-based advance optimization in incremental printing: median, sensitivity-weighted mean, normal random variation 有权
公开(公告)号：US06547362B2
公开(公告)日：2003-04-15
申请号：US09766514
申请日：2001-01-19
申请人： Francesc Subirada , James A Mott , Oscar Martinez
发明人： Francesc Subirada , James A Mott , Oscar Martinez
IPC分类号： B41J29393
CPC分类号： B41J11/42 , B41J2/2132 , B41J29/393
摘要： A test pattern is scanned to find ideal print-medium advance for a pen (or other marking device). The pattern has a medium; and, marked on it, image patches each with overlapped swaths stepped by different distances. At best there are different-color pens; and for each distance a set of patches, each with a patch for each color (preferably area fills at sensitive tones by color). All patches in a set are best adjacent along a scan direction, with alignment lines above each set across the whole pattern, and a nozzle-conditioning patch at each image patch. A processor prints the pattern, operates a sensor and uses its signals to find optimum advance. The system finds and prints with ideal advance for a most-active pen; or weighs pen activity to find an optimum for all pens based on certain statistical and/or prospective choices.

7. 发明授权

US07111918B2 Dual-axis media-positioning sensor 失效
公开(公告)号：US07111918B2
公开(公告)日：2006-09-26
申请号：US10766554
申请日：2004-08-13
申请人： Carles Flotats , David Claramunt , Jose M. Rio Doval , Rodrigo Ruiz , Francesc Subirada , Joaquim Veciana , Marc Jansa
发明人： Carles Flotats , David Claramunt , Jose M. Rio Doval , Rodrigo Ruiz , Francesc Subirada , Joaquim Veciana , Marc Jansa
IPC分类号： B41J29/393 , B41J29/38
CPC分类号： H04N1/00681 , B41J11/0095 , H04N1/00702 , H04N1/00708 , H04N1/0074 , H04N1/0075 , H04N1/00774
摘要： A media-positioning sensor assembly in one embodiment of the invention is disclosed that includes a mechanism and a media-positioning sensor. The mechanism moves back and forth over media along a first axis. The media advances past the mechanism along a second axis perpendicular to the first axis. The media-positioning sensor is situated on the mechanism and is to detect positioning of the media relative to the mechanism along at least one of the first axis and the second axis.

8. 发明申请

US20060109294A1 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：US20060109294A1
公开(公告)日：2006-05-25
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： 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％。

9. 发明申请

US20050067558A1 Method and system for printhead rotation detection using photosensors 有权
标题翻译：使用光电传感器进行打印头旋转检测的方法和系统
公开(公告)号：US20050067558A1
公开(公告)日：2005-03-31
申请号：US10672913
申请日：2003-09-25
申请人： Rodrigo Ruiz , Carles Flotats , Francesc Subirada
发明人： Rodrigo Ruiz , Carles Flotats , Francesc Subirada
IPC分类号： B41J2/21 , H01J40/14
CPC分类号： B41J2/2135
摘要： A method and apparatus is used to detect and compensate for printhead rotation in an inkjet printer. The detecting operation includes receiving an initial image of a pattern taken from a medium as the printhead passes over the medium, receiving a subsequent image of the pattern taken from the medium as the printhead continues to pass over the medium, comparing the initial image of the pattern and the subsequent image of the pattern taken from the medium and identifying a rotation of the printhead in the ink-jet printer passing over the medium if the comparison indicates the initial image of the pattern is rotated relative to the subsequent image of the pattern. The compensation operation includes modifying the timing settings associated with the firing of the nozzles in the inkjet printhead to compensate for the rotation of the printhead.
摘要翻译：使用方法和装置来检测和补偿喷墨打印机中的打印头旋转。检测操作包括当打印头经过介质时接收从介质取出的图案的初始图像，当打印头继续通过介质时，接收从介质取出的图案的后续图像，比较第图案和从介质取出的图案的后续图像，并且如果比较指示图案的初始图像相对于图案的后续图像旋转，则识别通过介质的喷墨打印机中的打印头的旋转。补偿操作包括修改与喷墨打印头中的喷嘴的点火相关联的定时设置，以补偿打印头的旋转。

10. 发明授权

US06834928B2 Determination of media advancement based on one pixel-wide media images 有权
标题翻译：基于一个像素宽的媒体图像确定媒体进步
公开(公告)号：US06834928B2
公开(公告)日：2004-12-28
申请号：US10419322
申请日：2003-04-19
申请人： Jose M Rio Doval , Carles Flotats , David Claramunt , Marc Jansa , Francesc Subirada
发明人： Jose M Rio Doval , Carles Flotats , David Claramunt , Marc Jansa , Francesc Subirada
IPC分类号： B41J2938
CPC分类号： B41J13/0009
摘要： A method of an embodiment of the invention is disclosed in which a linear imaging array captures a first one pixel-wide image of media, and the media is effectively advanced relative to the linear imaging array. The linear imaging array captures a second one pixel-wide image of the media, and the first and the second one pixel-wide images are compared to determine relative advancement of the media.
摘要翻译：公开了本发明实施例的方法，其中线性成像阵列捕获介质的第一个像素范围的图像，并且介质相对于线性成像阵列有效地前进。线性成像阵列捕获媒体的第二个像素宽的图像，并且比较第一和第二个像素宽的图像以确定媒体的相对进步。

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