公开(公告)号：EP1926302A2

公开(公告)日：2008-05-28

申请号：EP07254541.1

申请日：2007-11-22

申请人： Seiko Epson Corporation

发明人： Takahashi, Toru ,  Koase, Takashi ,  Kakutani, Toshiaki

IPC分类号： H04N1/405 ,  B41J2/205

CPC分类号： H04N1/4051

摘要： The invention provides a printing method of printing on a printing medium. The method includes: performing a halftone process with a dither matrix on image data that represents a tone value of each pixel making up an original image to determine a state of dot formation at each of print pixels of a print image that is to be formed on the printing medium, and generating dot data that represents the determined state of dot formation; and generating a print image by mutually combining each of dot groups that are formed at each of a plurality of pixel groups in a common print region according to the dot data, the plurality of pixel groups being assumed to have different physical conditions with respect to the dot formation. The dither matrix stores each threshold value such that a number of dots to be allocated to each of the plurality of dot groups is determined according to a dot formation order of each of the plurality of dot groups in the common print region in the halftone process.

摘要翻译： 本发明提供一种在打印介质上进行打印的打印方法。 该方法包括：在图像数据上执行具有抖动矩阵的半色调处理，该图像数据表示构成原始图像的每个像素的色调值，以确定将要形成的打印图像的每个打印像素处的点形成的状态 并且生成表示确定的点形成状态的点数据; 以及通过根据所述点数据相互组合在公共打印区域中的多个像素组中的每一个处形成的每个点组来生成打印图像，所述多个像素组被假设为具有与所述多个像素组相对于 点形成。 抖动矩阵存储每个阈值，使得根据半色调处理中的公共打印区域中的多个点组中的每个点组的点形成顺序来确定要分配给多个点组中的每一个的点数。

公开(公告)号：EP1830555A2

公开(公告)日：2007-09-05

申请号：EP07007369.7

申请日：1997-08-04

申请人： SEIKO EPSON CORPORATION

发明人： Shimada, Kazumichi ,  Kakutani, Toshiaki

IPC分类号： H04N1/52

CPC分类号： B41J2/17553 ,  B41J2/17513 ,  B41J2/1752 ,  B41J2/2056 ,  H04N1/52

摘要： A printing system reduces a total amount of discharge of at least three different color inks that are mixable to express hues in a predetermined range without deteriorating the degree of granularity. The printing system reads recording ratios of the respective color inks corresponding to input tone data regarding the respective color inks from tables TC, TM, and TY and forms dots according to the recording ratios. Yellow ink Y has a higher dye density than a balancing density that ensures a color balance. This makes the recording ratio of the yellow ink Y lower than the recording ratios of cyan ink C and magenta ink M. The yellow ink Y has high lightness, so that sparely formed dots do not increase the degree of granularity even in an area of low tone data. The enhanced density of the yellow ink Y reduces the total amount of inks discharged from a head to satisfy a required printing density.

摘要翻译： 印刷系统减少至少三种不同颜色墨水的总排放量，所述颜色墨水可混合以在不降低粒度的情况下将色调表达在预定范围内。 打印系统从表TC，TM和TY读取与关于各种颜色墨水的输入色调数据相对应的各种颜色墨水的记录比率，并根据记录比率形成点。 黄色墨水Y具有比平衡密度更高的染料密度，以确保颜色平衡。 这使得黄色墨水Y的记录比率低于青色墨水C和品红色墨水M的记录比率。黄色墨水Y具有高亮度，使得即使在低的区域中空心形成的点也不增加粒度 音调数据。 黄色墨水Y的增强密度减少了从喷头排出的墨水的总量以满足所需的打印密度。

公开(公告)号：EP1195981B1

公开(公告)日：2006-12-13

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

公开(公告)号：EP1710086A2

公开(公告)日：2006-10-11

申请号：EP06101308.2

申请日：2006-02-06

申请人： SEIKO EPSON CORPORATION

发明人： Kakutani, Toshiaki

IPC分类号： B41J2/205

CPC分类号： H04N1/4015 ,  H04N1/4051

摘要： This invention provides a printing apparatus that performs printing on a print medium. The printing apparatus includes: a dot data generator that performs a halftone process on image data, wherein the print image is formed by mutually combining print pixels belonging to each of a plurality of pixel position groups for which a physical difference is assumed at a formation of dots by the print image generator, in a common print area, and the halftone process is configured to determine the status of dot formation on each of the print pixels on an assumption of the physical difference.

摘要翻译： 本发明提供一种在打印介质上执行打印的打印设备。 打印装置包括：点数据生成器，其对图像数据进行半色调处理，其中，打印图像是通过相互组合属于多个像素位置组中的每一个的像素形成的，形成物理差异 通过打印图像生成器在公共打印区域中的点，并且半色调处理被配置为在假设物理差异的情况下确定每个打印像素上的点形成的状态。

公开(公告)号：EP0951176B1

公开(公告)日：2005-12-21

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

公开(公告)号：EP1599030A2

公开(公告)日：2005-11-23

申请号：EP05018220.3

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 two different types of dots to be created having different ink weights by an identical ink, 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 at least two different types of dots, which have different ink weights. 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 type of dot. The method determines the on-off state of a target type of dot, based on a corrected recording ratio. The corrected recording ratio is obtained by adding the recording ratios of all the types of dots previously subjected to the determination for the on-off state to the recording ratio of the target dot.

摘要翻译： 在能够通过相同的油墨形成具有不同油墨重量的至少两种不同类型的点的打印装置中，半色调处理以适当的顺序并根据适当的技术进行，这些技术通过考虑到 点的分散性和加工速度。 本发明的方法确定具有不同油墨重量的至少两种不同类型的点的开关状态。 由相同墨水产生的点以连续的方式进行开 - 关状态的确定。 在确定点类型的开状态时，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类型的点的开 - 关状态。 通过将先前经过开关状态的确定的所有类型的点的记录比与目标点的记录比相加来获得校正记录比。

公开(公告)号：EP1515538A1

公开(公告)日：2005-03-16

申请号：EP04028216.2

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.

摘要翻译： 本发明利用高浓度油墨（C1，M1）和低密度（C2，M2）油墨相对于特定颜色油墨，以提高打印质量。 本发明的程序通过与来自表格的输入色调数据相对应的高密度墨水读取深度点的记录比例，并且确定在目标像素中是否形成由高密度墨水形成的深色点。 在要形成深点的情况下，驱动高密度墨水头部上的压电元件PE形成深点。 另一方面，在不形成深点的情况下，通过参照该表来确定在目标像素中是否形成低密度墨的光点，并且指定开/ 关闭状态，以使光点的平均记录比等于预定值。 在表格中，深度点的形成开始于小于给出光点的最大记录率（60％）的色调数据（95）的特定值的色调数据的范围内。 这导致在具有光点的记录与具有深点的记录之间的接合处的平滑的颜色混合，从而确保极高的印刷质量。 光点的记录比可以根据与目标像素对应的位置处的另一种颜色墨水的浓度以及目标颜色墨水的密度而变化。

公开(公告)号：EP1434423A2

公开(公告)日：2004-06-30

申请号：EP04007287.8

申请日：1997-10-01

申请人： SEIKO EPSON CORPORATION

发明人： Kakutani, Toshiaki

IPC分类号： H04N1/40

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.

摘要翻译： 在用于通过每单位面积具有不同密度的点的分布或者具有不同色调的点打印图像的打印机中，本发明的结构精确地确定不同点的开/关状态并确保高质量的打印。 从表示记录比率和色调数据之间的关系的映射中读取与目标像素中的输入色调数据DS相对应的深点和光点的记录比Rn和Rt。 采用系统抖动法确定目标像素中深点的形成或不形成。 该方法将深点的记录无线电Rn与对应于目标像素并从阈值矩阵TM读取的阈值Dref进行比较。 在没有形成深点的情况下，通过将深点的记录比Rn相加来校正光点的记录比率Rt，并且随后与相同的阈值Dref进行比较，以确定光点的形成或不形成 目标像素。 本发明的结构仅使用一个阈值矩阵来实现期望的记录比率，而不会引起深点与光点的任何重叠。 该结构也适用于具有不同色调的点。 在这种情况下，使用一个阈值矩阵来确定具有不同色调的点的开/关状态，而不会引起不同色调的任何干扰。

公开(公告)号：EP0951176A3

公开(公告)日：2001-10-17

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.

公开(公告)号：EP0835025A3

公开(公告)日：2000-03-22

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.