公开(公告)号：US20080218773A1

公开(公告)日：2008-09-11

申请号：US11713874

申请日：2007-03-05

申请人： Kevin D. Schoedinger ,  David J. Mickan ,  David K. Lane ,  Eric W. Westerfield

发明人： Kevin D. Schoedinger ,  David J. Mickan ,  David K. Lane ,  Eric W. Westerfield

IPC分类号： G06F15/00

CPC分类号： H04N1/40068 ,  B41J2/471 ,  G06K15/1223 ,  H04N1/0402 ,  H04N1/0414 ,  H04N1/042 ,  H04N1/113

摘要： Methods and apparatus include scaling imaging of an electrophotographic (EP) device, such as a laser printer or copy machine, to obtain various media output speeds (in pages per minute). A scanning unit has a substantially fixed scan rate during printing and reflects a laser beam onto a photoconductor to create a latent image at a first resolution. A media is advanced into contact with the latent image at a predetermined printing process speed to obtain a printed image output of the latent image at a size corresponding to a size (job resolution) of the image input data, but at a resolution different than the resolution of the image data input. A controller alters data used to create the latent image. Techniques for altering resolution include processing relative to a raster image processor to stretch one resolution dimension of the bitmap into a larger resolution dimension.

摘要翻译： 方法和装置包括电子照相（EP）装置如激光打印机或复印机的缩放成像，以获得各种介质输出速度（以每分钟的页数）。 扫描单元在打印期间具有基本固定的扫描速率，并将激光束反射到光电导体上以以第一分辨率产生潜像。 以预定的打印处理速度使介质前进到潜像接触，以与图像输入数据的大小（作业分辨率）对应的尺寸获得潜像的打印图像输出，但是以与 图像数据输入的分辨率。 控制器改变用于创建潜像的数据。 用于改变分辨率的技术包括相对于光栅图像处理器的处理以将位图的一个分辨率维度扩展到更大的分辨率维度。

公开(公告)号：US5480240A

公开(公告)日：1996-01-02

申请号：US161006

申请日：1993-12-01

申请人： John P. Bolash ,  Curt P. Breswick ,  Thomas J. Eade ,  David K. Lane ,  Randall D. Mayo ,  David S. Waldrop

发明人： John P. Bolash ,  Curt P. Breswick ,  Thomas J. Eade ,  David K. Lane ,  Randall D. Mayo ,  David S. Waldrop

IPC分类号： B41J2/36 ,  G06K15/10 ,  B41J2/22

CPC分类号： B41J2/3555 ,  B41J2/36 ,  G06K15/102 ,  G06K2215/0071 ,  G06K2215/0077

摘要： A print quality enhancement arrangement for a dot matrix printer such as a thermal ink jet printer. The arrangement includes a buffer for receiving 300 dots per inch (dpi) resolution data in the horizontal (print head movement) direction and creates 600 dpi resolution data using image enhancement techniques. The arrangement further includes correction of the higher resolution data to remove pels which are unprintable due to the frequency response of the print elements in the print head. The correction is performed using knowledge of the history of printed pels and the original 300 dpi data. The creation of the higher resolution data and its correction occur "on-the-fly" as data is being fed to the print head, rather than through the creation of a 300 by 600 dpi bitmap.

摘要翻译： 用于诸如热喷墨打印机的点阵打印机的打印质量增强布置。 该装置包括用于在水平（打印头移动）方向上接收每英寸300点（dpi）分辨率数据的缓冲器，并使用图像增强技术创建600dpi分辨率数据。 该装置还包括校正较高分辨率的数据以去除由于打印头中的打印元件的频率响应而不能打印的像素。 使用关于印刷图像的历史和原始300dpi数据的知识来执行校正。 随着数据被馈送到打印头，而不是通过创建300×600dpi的位图，“更快的分辨率”数据的创建及其校正发生在“即时”。

公开(公告)号：US07359088B2

公开(公告)日：2008-04-15

申请号：US10688110

申请日：2003-10-16

申请人： Raymond E. Clark ,  David K. Lane ,  Cary P. Ravitz ,  Stanley C. Tungate, Jr.

发明人： Raymond E. Clark ,  David K. Lane ,  Cary P. Ravitz ,  Stanley C. Tungate, Jr.

IPC分类号： H04N1/52 ,  H04N1/56

CPC分类号： H04N1/4076

摘要： Methods and systems for estimating single or multi-colored toner coverage on a printed page. One method includes generating color plane bitmaps corresponding to each color in a contone bitmap and calculating pixel coverage values for each of the color plane contone bitmaps. Another method includes receiving image data to be printed, generating color separations for the image data corresponding to available toner colors, printing each color separation on a printed page, scanning each printed page comprising the color separation and calculating toner coverage on each of the scanned printed pages.

摘要翻译： 用于估算打印页面上单色或多色调色剂覆盖率的方法和系统。 一种方法包括在连续色调位图中生成对应于每种颜色的彩色平面位图，并且计算每个彩色连续色调位图的像素覆盖值。 另一种方法包括接收要打印的图像数据，产生对应于可用调色剂颜色的图像数据的分色，在打印页上打印每种颜色分离，扫描包括颜色分离的每个打印页面，并计算每个扫描打印的 页面。

公开(公告)号：US07116821B2

公开(公告)日：2006-10-03

申请号：US10105660

申请日：2002-03-25

申请人： David K. Lane ,  Ning Ren

发明人： David K. Lane ,  Ning Ren

IPC分类号： G06K9/34

CPC分类号： H04N1/58 ,  G06K15/02

摘要： The present invention is directed a method of color trapping. In one embodiment, the color trapping is performed during the rasterization process. The color trapping comprises identifying page objects into a variety of different categories. Color trapping for each of the page objects is then performed based on specific procedures for the category. In one embodiment, the categories include identifying the page objects as rectangles, characters, and non-rectangular shapes. In one embodiment, specific page objects may be identified as being of a type that color trapping is not to be performed.