Resolution-dependent and color-dependent print masking
    1.
    发明授权
    Resolution-dependent and color-dependent print masking 失效
    分辨率依赖和颜色相关的打印屏蔽

    公开(公告)号:US6033048A

    公开(公告)日:2000-03-07

    申请号:US212009

    申请日:1998-12-15

    摘要: At least two different printmasks are used for different printing devices--such as inkjet pens--that operate concurrently, or different printing steps that proceed concurrently, to produce respective image swaths in a single, pixel-based printing machine. In one form of the invention, the different printing devices produce different respective pixel-row pitches (related to resolution) on a printing medium, and the different printmasks help to minimize adverse patterning effects that result from interaction of the different pitches with dot-placement errors. The different pitches on the print medium may be provided through different pitches of marking devices (for example, the number of inkjet nozzles per unit distance along a pen) or in other ways. In another form of the invention the different printing devices are provided with different respective liquid-base colorants, to mark in different colors on a printing medium, and the different masks facilitate physical separation of the different colorants to promote drying. Earlier-applied colorants have more time to dry and penetrate before later adjacent or superposed application of other colorants improving print attributes such as bleed, offset, cockle, curl, overall drying time and throughput.

    摘要翻译: 至少两个不同的打印掩模用于不同的打印设备(例如同时进行的喷墨笔)或同时进行的不同打印步骤,以在单个基于像素的打印机中产生相应的图像条。 在本发明的一种形式中,不同的打印装置在打印介质上产生不同的相应的像素行间距(与分辨率相关),并且不同的打印掩模有助于最小化由不同间距与点位置的相互作用产生的不利图案化效果 错误。 打印介质上的不同间距可以通过标记装置的不同间距(例如,沿笔的每单位距离的喷墨喷嘴的数量)或以其它方式提供。 在本发明的另一种形式中,不同的印刷装置设置有不同的各自的液态着色剂,以在印刷介质上标记不同的颜色,并且不同的掩模促进不同着色剂的物理分离以促进干燥。 早期施用的着色剂在稍后相邻或叠加施加其它着色剂之前具有更多的时间干燥和渗透,从而改善印刷属性,例如渗色,偏移,起翘,卷曲,总干燥时间和生产量。

    Resolution-dependent and color-dependent print masking
    2.
    发明授权
    Resolution-dependent and color-dependent print masking 失效
    分辨率依赖和颜色相关的打印屏蔽

    公开(公告)号:US5883644A

    公开(公告)日:1999-03-16

    申请号:US399007

    申请日:1995-03-06

    摘要: At least two different printmasks are used for different printing devices--such as inkjet pens--that operate concurrently, or different printing steps that proceed concurrently, to produce respective image swaths in a single, pixel-based printing machine. In one form of the invention, the different printing devices produce different respective pixel-row pitches (related to resolution) on a printing medium, and the different printmasks help to minimize adverse patterning effects that result from interaction of the different pitches with dot-placement errors. The different pitches on the print medium may be provided through different pitches of marking devices (for example, the number of inkjet nozzles per unit distance along a pen) or in other ways. In another form of the invention the different printing devices are provided with different respective liquid-base colorants, to mark in different colors on a printing medium, and the different masks facilitate physical separation of the different colorants to promote drying. Earlier-applied colorants have more time to dry and penetrate before later adjacent or superposed application of other colorants.

    摘要翻译: 至少两个不同的打印掩模用于不同的打印设备(例如同时进行的喷墨笔)或同时进行的不同打印步骤,以在单个基于像素的打印机中产生相应的图像条。 在本发明的一种形式中,不同的打印装置在打印介质上产生不同的相应的像素行间距(与分辨率相关),并且不同的打印掩模有助于最小化由不同间距与点位置的相互作用产生的不利图案化效果 错误。 打印介质上的不同间距可以通过标记装置的不同间距(例如,沿笔的每单位距离的喷墨喷嘴的数量)或以其它方式提供。 在本发明的另一种形式中,不同的印刷装置设置有不同的各自的液态着色剂,以在印刷介质上标记不同的颜色,并且不同的掩模促进不同着色剂的物理分离以促进干燥。 早期施用的着色剂在稍后相邻或叠加施用其它着色剂之前具有更多的时间干燥和渗透。

    Printing of variable dot sizes dependent upon image density for improved
graphics
    3.
    发明授权
    Printing of variable dot sizes dependent upon image density for improved graphics 失效
    根据图像密度打印可变点尺寸以改进图形

    公开(公告)号:US5535307A

    公开(公告)日:1996-07-09

    申请号:US291230

    申请日:1994-08-16

    申请人: Stephen K. Glass

    发明人: Stephen K. Glass

    IPC分类号: H04N1/40 G06K15/00

    CPC分类号: H04N1/40075

    摘要: The present invention improves the quality of halftone graphics patterns which convey shades of gray using dots. In the preferred embodiment, an initial low resolution graphics pattern is translated into a higher resolution graphics pattern by printing a variable number of high resolution dots for each dot in the low resolution graphics pattern. The number of high resolution dots printed for each initial low resolution dot is dependent upon the density of dots in the low resolution pattern. In another embodiment, the size of each dot printed, rather than the number of dots, is varied depending upon the density of dots in the low resolution pattern. When the dot density increases to where the low resolution pattern appears to be part of a text pattern, a different set of enhancement rules are then applied to correct the text pattern. Using the above method, an enhanced high resolution graphics pattern may be produced from a lower resolution graphics pattern without objectionable clumping of dots, thus producing a more homogenous and pleasing graphics pattern.

    摘要翻译: 本发明改进了使用点传送灰色阴影的半色调图形图案的质量。 在优选实施例中,通过为低分辨率图形图形中的每个点打印可变数量的高分辨率点,初始低分辨率图形图案被转换成更高分辨率图形图形。 为每个初始低分辨率点打印的高分辨率点的数量取决于低分辨率图案中的点的密度。 在另一个实施例中,打印的每个点的尺寸而不是点的数量根据低分辨率图案中的点的密度而变化。 当点密度增加到低分辨率图案看起来是文本图案的一部分时,然后应用不同的增强规则集来校正文本图案。 使用上述方法,可以从较低分辨率图形图案产生增强的高分辨率图形图案,而不会令人不快地聚集点,从而产生更均匀且令人愉快的图形图案。