公开(公告)号：US6031974A

公开(公告)日：2000-02-29

申请号：US407372

申请日：1995-03-20

申请人： Kazuyoshi Takahashi ,  Makoto Katsuma ,  Takashi Watanabe ,  Hiroshi Endo ,  Toshiyuki Yanaka ,  Toshiaki Mabuchi ,  Eiichi Takagi

发明人： Kazuyoshi Takahashi ,  Makoto Katsuma ,  Takashi Watanabe ,  Hiroshi Endo ,  Toshiyuki Yanaka ,  Toshiaki Mabuchi ,  Eiichi Takagi

IPC分类号： H04N1/52 ,  B41B15/00 ,  B41J15/00 ,  G06F15/00 ,  H04N1/46

CPC分类号： H04N1/52

摘要： The invention seeks to reduce amount of image data without detracting from picture quality, thereby lowering processing speed and holding down memory cost. While preserving the density of color image data, a computer compresses the color image data, which has been outputted by an image scanner, to a prescribed number of colors on the basis of the colors of inks. An image processor binarizes the results of compression, while preserving density, on the basis of ink colors. A main unit repeatedly prints a basic image, which is represented by the binarized image data, on cloth supplied from a supply unit.

摘要翻译： 本发明寻求减少图像数据量而不降低图像质量，从而降低处理速度并抑制存储器成本。 在保持彩色图像数据的密度的同时，计算机根据油墨的颜色将图像扫描仪输出的彩色图像数据压缩到规定数量的颜色。 图像处理器基于墨水颜色将压缩结果二值化，同时保持密度。 主单元在从供给单元提供的布上重复地打印由二值化图像数据表示的基本图像。

公开(公告)号：US5999644A

公开(公告)日：1999-12-07

申请号：US852342

申请日：1997-05-07

申请人： Susumu Sugiura

发明人： Susumu Sugiura

IPC分类号： H04N1/32 ,  G06F3/08 ,  H04N1/333 ,  H04N1/41 ,  H04N1/46 ,  H04N1/48 ,  H04N1/52 ,  H04N1/64

CPC分类号： H04N1/33338 ,  H04N1/33307 ,  H04N1/33315 ,  H04N1/33376 ,  H04N1/41 ,  H04N1/46 ,  H04N1/64 ,  H04N2201/33357 ,  H04N2201/33378

摘要： Image processing apparatus and method perform a predetermined compression processing for an input original. A compression processing method or a receiver of compressed data is changed in accordance with a color/black-and-white status discrimination for the input original, or is set manually.

摘要翻译： 图像处理装置和方法对输入的原稿执行预定的压缩处理。 压缩处理方法或压缩数据的接收器根据输入原稿的颜色/黑白状态判别而改变，或者手动设定。

公开(公告)号：US5982992A

公开(公告)日：1999-11-09

申请号：US924734

申请日：1997-09-05

申请人： Brian L. Waldron

发明人： Brian L. Waldron

IPC分类号： B41J2/525 ,  G06T5/00 ,  H04N1/46 ,  H04N1/52 ,  H04N1/60 ,  B41B15/00 ,  B41J15/00 ,  G06F15/00

CPC分类号： H04N1/52

摘要： In a digital printing apparatus in which primary colorants are selected by an error-diffusion process, a method takes into account situations in which a colorant is selectable from within the gamut defined by certain other primary colorants. In the case of a printer in which, in addition to CMYK colorants, a mid-gray colorant is also selectable, the method avoids the problem in which an error-diffusion algorithm mandates the simulation of colors outside the gamut.

摘要翻译： 在通过误差扩散处理选择原色剂的数字打印装置中，一种方法考虑了其中着色剂可以在由某些其它原色料定义的色域内选择的情况。 在打印机的情况下，除了CMYK着色剂之外，还可以选择中灰色着色剂，该方法避免了误差扩散算法强制对色域外的颜色的模拟的问题。

公开(公告)号：US5975671A

公开(公告)日：1999-11-02

申请号：US657723

申请日：1996-05-30

申请人： Kevin E. Spaulding ,  Douglas W. Couwenhoven ,  Rodney L. Miller

发明人： Kevin E. Spaulding ,  Douglas W. Couwenhoven ,  Rodney L. Miller

IPC分类号： H04N1/409 ,  H04N1/52 ,  B41J2/205

CPC分类号： H04N1/409 ,  H04N1/52

摘要： A method for processing a digitized continuous tone image so that such processed image is adapted to be applied to an image rendering device which prints dots from a set of two or more possible dot-areas and from a set of colorants having different colorant concentrations is disclosed. The method includes selecting a set of N dot-area and colorant concentration combinations, each of said combinations producing a different integrated optical density value and multilevel halftone processing the digitized continuous tone image to produce an output image having a set of output levels wherein one member of the set of N dot-area and colorant concentration combinations is associated with each of the possible output levels.

摘要翻译： 一种用于处理数字化连续色调图像的方法，使得这种处理后的图像适于应用于从一组两个或更多个可能的点区域和从具有不同着色剂浓度的一组着色剂中打印点的图像渲染装置 。 该方法包括选择一组N个点区域和着色剂浓度组合，每个所述组合产生不同的积分光密度值，并且多级半色调处理数字化连续色调图像以产生具有一组输出电平的输出图像，其中一个成员 的N个点区域和着色剂浓度组合的组合与每个可能的输出水平相关联。

公开(公告)号：US5971523A

公开(公告)日：1999-10-26

申请号：US883520

申请日：1997-06-26

申请人： John E. Werner

发明人： John E. Werner

IPC分类号： B41J2/21 ,  G06K15/02 ,  H04N1/23 ,  H04N1/46 ,  H04N1/52 ,  H04N1/60

CPC分类号： H04N1/6022 ,  G06K15/02 ,  G06K15/1857 ,  H04N1/506 ,  G06K2215/0062 ,  G06K2215/0094

摘要： A color liquid ink printing system, including multiple processors, depositing color liquid ink to form a color image on a recording medium in response to color image data. The printing system includes a processor, receiving the color image data, and outputting a plurality of color image signals, each of the plurality of color image signals representing color information of one of a plurality of color planes. A plurality of graphics processors, coupled to the processor, receive the plurality of color image signals and output a plurality of bitmap image signals in response thereto. A color liquid ink printhead, coupled to the plurality of graphics processors, receive the plurality of bitmap image signals and deposit liquid ink on the recording medium in response thereto.

摘要翻译： 一种彩色液体油墨打印系统，包括多个处理器，响应于彩色图像数据，在记录介质上沉积彩色液体油墨以形成彩色图像。 打印系统包括处理器，接收彩色图像数据，并输出多个彩色图像信号，多个彩色图像信号中的每个彩色图像信号表示多个色彩平面之一的颜色信息。 耦合到处理器的多个图形处理器接收多个彩色图像信号并响应于此输出多个位图图像信号。 耦合到多个图形处理器的彩色液体墨水打印头接收多个位图图像信号，并响应于此而将液体墨水沉积在记录介质上。

公开(公告)号：US5966507A

公开(公告)日：1999-10-12

申请号：US921891

申请日：1997-08-25

申请人： Qian Lin

发明人： Qian Lin

IPC分类号： B41J2/21 ,  B41J2/205 ,  H04N1/23 ,  H04N1/40 ,  H04N1/52

CPC分类号： H04N1/52 ,  H04N1/40087

摘要： A process and apparatus improve color halftone imaging for ink-based printing by reducing the amount of time necessary to perform the halftoning process, by reducing the amount of ink consumed and by increasing the quality of the images produced. These benefits are achieved by adapting Image Resolution Enhancement Technology (IRET) to render color images that achieve near-photographic image quality on a color inkjet printer having multiple dye load and increased scan axis addressability, while keeping the computation complexity to a minimum. This is achieved by designing basic patterns at multiple intensities, and by using a multi-level halftoning technique to obtain smooth gradations. For plain paper, as well as for coated paper, multi-level halftoning is performed on an asymmetric geometry to yield the best result, while for glossy paper, a regular geometry yields the best result because of the limited ink absorption capacity for glossy paper. Further benefits are achieved through non-primary color ink reduction and the use of assymetric dither matrices. Thus, the method and apparatus of the present invention will yield images that have few undesirable artifacts such as banding, texturing and "worms". Furthermore, a reduced amount of processing time will be required to render an image and a modest amount of ink will be used. Besides decreasing the cost of printing, the use of a lower amount of ink can cause decreased dry time for each print, and can reduce curling of the paper, and smudging of the image.

摘要翻译： 一种方法和装置通过减少进行半色调处理所需的时间量，通过减少消耗的油墨量和提高所产生的图像的质量来改进用于油墨印刷的彩色半色调成像。 这些优点通过适应图像分辨率增强技术（IRET）来实现，以在具有多种染料负载和增加的扫描轴寻址能力的彩色喷墨打印机上渲染实现近摄影图像质量的彩色图像，同时将计算复杂度降至最低。 这是通过设计多个强度的基本图案，并通过使用多级半色调技术来获得平滑的等级来实现的。 对于普通纸以及涂布纸，在不对称几何上执行多级半色调以产生最佳效果，而对于光面纸而言，由于光泽纸的墨水吸收能力有限，因此规则几何产生最佳效果。 通过非原色油墨还原和使用不对称抖动矩阵来实现进一步的益处。 因此，本发明的方法和装置将产生具有很少不期望的伪影的图像，诸如带状，纹理化和“蠕虫”。 此外，需要减少处理时间以渲染图像并且将使用适量的墨水。 除了降低印刷成本之外，使用较少量的墨水可能导致每个印刷品的干燥时间减少，并且可以减少纸张的卷曲和图像的污迹。

公开(公告)号：US5943088A

公开(公告)日：1999-08-24

申请号：US411279

申请日：1995-03-27

申请人： Yuji Sakemi ,  Hisashi Fukushima

发明人： Yuji Sakemi ,  Hisashi Fukushima

IPC分类号： G03G15/01 ,  H04N1/40 ,  H04N1/50 ,  H04N1/52

CPC分类号： H04N1/508 ,  G03G15/011 ,  H04N1/40037 ,  G03G2215/0177

摘要： An image forming apparatus includes a photosensitive member; an exposing device for emitting a beam of light in accordance with image data for forming an electric image on the photosensitive member; a plurality of developing devices for developing the electric image formed on the photosensitive member; a controller for controlling, for each picture element, duration of the beam of light emitted from the exposing device in response to an image signal; wherein the controller varies, for each picture element, a maximum value of the duration of the beam of light emitted from the exposing device, depending on which developing device is used.

摘要翻译： 图像形成装置包括感光构件; 用于根据用于在感光构件上形成电图像的图像数据发射光束的曝光装置; 用于显影形成在感光构件上的电图像的多个显影装置; 控制器，用于响应于图像信号，为每个像素控制从曝光装置发射的光束的持续时间; 其中，根据使用的显影装置，对于每个像素，控制器改变从曝光装置发射的光束的持续时间的最大值。

公开(公告)号：US5917994A

公开(公告)日：1999-06-29

申请号：US909747

申请日：1997-08-11

申请人： Alexander Perumal, Jr. ,  Paul H. Dillinger

发明人： Alexander Perumal, Jr. ,  Paul H. Dillinger

IPC分类号： H04N1/52 ,  H04N1/60 ,  H04N1/56

CPC分类号： H04N1/6022 ,  H04N1/52 ,  H04N1/60 ,  H04N1/6016

摘要： This system selectively enables a printer to deposit primary or black color dots at pixel locations on a sheet to produce a color image--in such a way as to increase the overall number of dots used in the image, thereby minimizing contrast between dots on the sheet and adjacent areas and so providing a better simulation of a continuous-tone image. The result is print quality often near that of error diffusion, usually better than any dither technique, but with the greater speed of a dither technique. The system includes a memory for storing a first color vector for each pixel in the image, respectively, and a processor coupled to the memory for determining a second color vector from each of the first vectors, respectively. The processor accomplishes this determination by replacing a fraction of the black color component of the first vector with primary colors. Preferably the processor also removes from the first color vector a quantity of white, in conjunction with the black replacement; in this case the processor sets the fraction of the black component to a value between zero and one inclusive, depending on the quantity of white that is available, in the first color vector, for removal. Preferably the fraction is the smaller of (1) the quantity of black present and (2) a certain fraction of the quantity of white available for removal. Analogously a fraction of the secondary color component of a color vector is replaced with primary colors.

摘要翻译： 该系统选择性地使得打印机能够在纸张上的像素位置处存储主要或黑色彩色点以产生彩色图像，以便增加图像中使用的点的总数，从而最小化纸张上的点之间的对比度 和相邻区域，因此提供了对连续色调图像的更好的模拟。 结果是打印质量通常接近于误差扩散的质量，通常比任何抖动技术都好，但抖动技术的速度更快。 该系统包括用于分别存储图像中的每个像素的第一颜色矢量的存储器和耦合到存储器的处理器，用于分别从每个第一矢量确定第二颜色矢量。 处理器通过用原色代替第一矢量的黑色分量的一部分来完成该确定。 优选地，处理器还与第一颜色矢量一起从黑色替换中移除一定数量的白色; 在这种情况下，处理器将黑色分量的分数设置为包含0和1之间的值，具体取决于第一个颜色矢量中可用的白色数量以进行删除。 优选地，部分是（1）黑色存在量和（2）可用于去除的白色数量的一定比例中的较小者。 类似地，颜色矢量的次要颜色分量的一部分被原色代替。

公开(公告)号：US5902052A

公开(公告)日：1999-05-11

申请号：US831431

申请日：1997-04-01

申请人： Shuji Hayashi

发明人： Shuji Hayashi

IPC分类号： H04N1/60 ,  B41J2/36 ,  H04N1/52

CPC分类号： B41J2/36

摘要： A color image-forming machine comprises a color image signal-forming means for outputting digital signals Cd, Md and Yd expressing, on tone levels, three primary colors C, M and Y for each of a number of pixels, and a correction means for correcting the digital signals Cd, Md and Yd by using a correction table. The correction table is formed by forming masking operation correction tables using many masking operation expressions, and then, detecting singular portions in the masking operation correction tables, and modifying the detected singular portions.

摘要翻译： 彩色图像形成机包括彩色图像信号形成装置，用于输出针对多个像素中的每一个在色调等级上表示三原色C，M和Y的数字信号Cd，Md和Yd;以及校正装置， 通过使用校正表来校正数字信号Cd，Md和Yd。 通过使用许多掩蔽操作表达形成掩蔽操作校正表，然后检测掩蔽操作校正表中的奇异部分，并修改检测到的奇异部分，形成校正表。

公开(公告)号：US5884013A

公开(公告)日：1999-03-16

申请号：US747940

申请日：1996-11-12

申请人： Jacobus Bosschaerts ,  Johan Vanhunsel ,  Jan Van Cauwenberge ,  Paul Delabastita

发明人： Jacobus Bosschaerts ,  Johan Vanhunsel ,  Jan Van Cauwenberge ,  Paul Delabastita

IPC分类号： B41J2/52 ,  G03F5/00 ,  G03F7/07 ,  G06T5/00 ,  H04N1/405 ,  H04N1/52 ,  G06K15/02 ,  H04N1/23

CPC分类号： H04N1/4055

摘要： A method for generating a screened reproduction of a multiple tone image comprises the steps of autotypical or amplitude modulation screening the multiple tone image to obtain screened data representing tones of the multiple tone image in terms of halftone dots; reproducing the halftone dots on an imaging element by means of a scan-wise exposure by means of a laser or a LED, wherein in extreme regions of the tone scale the shape of the halftone dots is compact, characterized in that the halftone dots have a ratio of peripheral length to surface area which is minimal.

摘要翻译： 一种用于产生多色调图像的屏蔽再现的方法包括以下步骤：自动特征或幅度调制屏蔽多色调图像，以获得表示以色调点为基础的多色调图像色调的屏幕数据; 通过借助于激光或LED的扫描式曝光在成像元件上再现半色调点，其中在色阶的极端区域中，网版点的形状是紧凑的，其特征在于，网版点具有 周边长度与表面积的比值最小。