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54 条记录 (耗时 0.023 秒)

    Printing system and image recording method
    31.
    发明公开
    Printing system and image recording method 失效

    公开(公告)号：EP0835025A2

    公开(公告)日：1998-04-08

    申请号：EP97307726.6

    申请日：1997-10-01

    申请人： SEIKO EPSON CORPORATION

    发明人： Kakutani, Toshiaki

    IPC分类号： H04N1/40 ,  H04N1/52

    CPC分类号： H04N1/40087 ,  H04N1/52

    摘要： In a printer for printing an image by a distribution of dots having different densities per unit area or dots having different hues, the structure of the present invention accurately determines the on/off state of the different dots and ensures high quality printing. Recording ratios Rn and Rt of deep dots and light dots corresponding to input tone data DS in a target pixel are read from a map representing the relationship between the recording ratios and the tone data. The systematic dither method is adopted to determine formation or non-formation of a deep dot in the target pixel. This method compares the recording radio Rn of deep dots with a threshold value Dref corresponding to the target pixel and read from a threshold matrix TM. In the case where a deep dot is not formed, the recording ratio Rt of light dots is corrected by adding the recording ratio Rn of deep dots and subsequently compared with the same threshold value Dref to determine formation or non-formation of a light dot in the target pixel. The structure of the present invention uses only one threshold matrix to realize desired recording ratios without causing any overlap of deep dots with light dots. This structure is also applicable to dots having different hues. In this case, one threshold matrix is used to determine the on/off state of dots having different hues without causing any interference of the different hues.

    Image processing apparatus
    32.
    发明公开
    Image processing apparatus 失效
    图像处理设备

    公开(公告)号：EP0614309A3

    公开(公告)日：1997-03-19

    申请号：EP94103138.7

    申请日：1994-03-02

    申请人： SEIKO EPSON CORPORATION

    发明人： Kakutani, Toshiaki

    IPC分类号： H04N1/46

    CPC分类号： H04N1/6019 ,  H04N1/52

    摘要： An image processing apparatus (30) is described in which the number of operations necessary for color correction processing is made smaller than the number of operations necessary for gradation number conversion processing in a later process without causing deterioration of image quality, so that color correction processing and gradation number conversion processing can be conducted at high speed. The number of gradations capable of being converted in the pre-gradation number conversion section (40) is larger than that in the post-gradation number conversion section (46). The pre-gradation number conversion section (40) conducts pre-gradation number conversion for converting the gradation number of color components of R, G, B of the original color image data into the gradation coordinate value of the most appropriate grid point in the color space. The color compensating section (42) reads out the gradation compensating data corresponding to the color image data subjected to the pregradation number conversion from the color compensating table memory (34), so that the gradation number of each color component of Rk, Gk, Bk is compensated and outputted. The post-gradation number conversion section (46) conducts post-gradation number conversion on the data obtained from the color compensating section so that a finally desired gradation number can be obtained.

    Image processing apparatus, print control apparatus, image processing method, and recording medium
    37.
    发明公开
    Image processing apparatus, print control apparatus, image processing method, and recording medium 有权
    Bildverarbeitungsvorrichtung und -Verfahren，Drucksteuervorrichtung und Aufzeichnungsmedium

    公开(公告)号：EP1195981A2

    公开(公告)日：2002-04-10

    申请号：EP01123769.0

    申请日：2001-10-04

    申请人： SEIKO EPSON CORPORATION

    发明人： Kakutani, Toshiaki

    IPC分类号： H04N1/405

    CPC分类号： H04N1/4052

    摘要： A specific number of adjacent pixels are combined into blocks. The tone values of the pixels in a target block are detected when the dot on-off state is determined, and the fact that the target block does or does not satisfy specific processing conditions is confirmed based on the relation between the magnitudes of the tone values thus detected. The dot on-off state is determined for the target block in block units if the target block satisfies the processing conditions. The conversion procedure can be rapidly performed by adopting this approach. The dot on-off state is determined for the pixels of the target block if the processing conditions are not satisfied. Image quality is thereby prevented from being adversely affected. Image quality can thus be preserved and image data rapidly converted to a specific expression format based on the dot on-off state by performing the conversion procedure in accordance with an appropriate method selected based on whether the processing conditions are satisfied.

    摘要翻译： 特定数量的相邻像素被组合成块。 当确定点开关状态时检测目标块中的像素的色调值，并且基于色调值的大小之间的关系来确定目标块确实或不满足特定处理条件的事实 从而检测到。 如果目标块满足处理条件，则以块为单位为目标块确定点开关状态。 通过采用这种方法可以快速实现转换过程。 如果处理条件不满足，则针对目标块的像素确定点开关状态。 从而防止图像质量受到不利影响。 因此可以根据基于是否满足处理条件选择的适当方法，通过执行转换过程，从而可以保持图像质量并且基于点开关状态将图像数据快速转换为特定表示格式。

    Printing system utilizing inks of different densities, cartridge used therefor, and method of recording images
    39.
    发明公开
    Printing system utilizing inks of different densities, cartridge used therefor, and method of recording images 失效
    使用不同密度的油墨打印系统中，盒与其一起使用，和图像记录方法

    公开(公告)号：EP0817464A3

    公开(公告)日：2000-03-08

    申请号：EP97304670.9

    申请日：1997-06-27

    申请人： SEIKO EPSON CORPORATION

    发明人： Shimada, Kazumichi ,  Kakutani, Toshiaki

    IPC分类号： H04N1/40 ,  H04N1/52

    CPC分类号： B41J2/2107 ,  H04N1/40087 ,  H04N1/52

    摘要： The present invention utilizes a high-density ink (C1,M1) and a low-density (C2,M2) ink with respect to a specific color ink, so as to improve the printing quality. The procedure of the present invention reads a recording ratio of deep dots by the high-density ink corresponding to input tone data from a table and determines whether or not deep dots by the high-density ink are to be formed in a target pixel. In the case that deep dots are to be formed, a piezoelectric element PE on a head of the high-density ink is driven to form deep dots. In the case that deep dots are not to be formed, on the other hand, the procedure determines whether or not light dots by the low-density ink are to be formed in the target pixel by referring to the table, and specifies the on/off state of the light dots in order to cause a mean recording ratio of the light dots to be equal to a predetermined value. In the table, formation of deep dots starts in the range of tone data smaller than the specific value of tone data (95) that gives a maximum recording ratio (60%) of light dots. This results in smooth color mixture at a joint between a record with light dots and a record with deep dots, thereby ensuring extremely high printing quality. The recording ratio of light dots may be varied according to the density of another color ink at a position corresponding to the target pixel as well as the density of the target color ink.

    Printing method, printing apparatus, and recording medium
    40.
    发明公开
    Printing method, printing apparatus, and recording medium 有权
    Druckverfahren，Druckgerät，undAufzeichnungsträger

    公开(公告)号：EP0951176A2

    公开(公告)日：1999-10-20

    申请号：EP99301679.9

    申请日：1999-03-05

    申请人： SEIKO EPSON CORPORATION

    发明人： Kakutani, Toshiaki

    IPC分类号： H04N1/40

    CPC分类号： H04N1/40087 ,  H04N1/4057

    摘要： In a printing apparatus that enables at least three different types of dots to be created in different ink weights by at least two different inks having an identical hue but different densities, the halftone processing is carried out in an appropriate sequence and according to an appropriate technique, which are determined by taking into account both the dispersibility of dots and the processing speed. The method of the present invention determines the on-off state of six different types of dots, which have different ink densities and ink weights, in the sequence of the large deep dot, the medium deep dot, the small deep dot, the large light dot, the medium light dot, and the small light dot. The dots created by an identical ink are subjected to the determination for the on-off state in a consecutive manner. A dither method that utilizes the recording ratio set for each type of dot according to the tone data is adopted in the determination for the on-off state of the dot. The method determines the on-off state of a target dot, based on a corrected recording ratio. The corrected recording ratio is obtained by adding the recording ratios of all the dots previously subjected to the determination for the on-off state to the recording ratio of the target dot.

    摘要翻译： 在能够通过具有相同色相但不同密度的至少两种不同油墨在不同油墨重量中形成至少三种不同类型的点的打印装置中，半色调处理按适当的顺序并根据适当的技术进行 ，其通过考虑点的分散性和处理速度来确定。 本发明的方法根据大深度点，中等深度点，小深度点，大光线的顺序，确定具有不同油墨浓度和油墨重量的六种不同类型的点的开 - 关状态 点，中点光点和小光点。 由相同墨水产生的点以连续的方式进行开 - 关状态的确定。 在确定点的开 - 关状态时，采用利用根据色调数据为每种类型的点设置的记录比率的抖动方法。 该方法基于校正的记录比例来确定目标点的开关状态。 通过将先前进行的开 - 关状态的确定的所有点的记录比与目标点的记录比相加来获得校正的记录比。