Method and apparatus for printing
    2.
    发明授权
    Method and apparatus for printing 有权
    打印方法和装置

    公开(公告)号:US6145962A

    公开(公告)日:2000-11-14

    申请号:US311878

    申请日:1999-05-14

    摘要: In the case of printing in three-value level utilizing two kinds of inks mutually different densities for one color (higher and lower density inks), it is assumed that a reflection density of a region having a predetermined area when solid print is performed only by the lower density ink, and that when solid print is performed only by the higher density ink are expressed ODt and ODn, respectively. Since the granular appearance of the ink dots is expressed in terms of reflection density of one dot, the granular appearance of a lower density ink dot at a portion of image formed only by the lower density ink dots and the granular appearance of a higher density ink dot at a portion of image formed by the higher and lower density ink dots are expressed in terms of values of ODt and (ODn-ODt) divided by the number of pixels included in the above region, respectively. Accordingly, by making the reflection density ODt to be approximately one half of the reflection density ODn, the granular appearance produced by the lower density ink dot at the highlighted portion and the granular appearance produced by the higher density ink dot at the portion where the higher density ink dots scattered in the lower density ink dots can be made substantially equal to each other. For this purpose, it is preferable that a dye concentration of the lower density ink is to be about one fourth of that of the higher density ink.

    摘要翻译: 在使用两种不同浓度的油墨(高浓度和低浓度油墨)的三值油墨印刷的情况下,假设仅在实施印刷时由具有预定区域的区域的反射浓度 较低密度的墨水以及仅通过较高密度墨水进行固体印刷时分别表示为ODt和ODn。 由于墨点的粒状外观以一点的反射密度表示,所以在仅由较低密度墨点形成的图像部分处的较低密度墨点的粒状外观和较高密度墨水的粒状外观 通过高密度和低密度墨点形成的图像的一部分,以ODt和(ODn-ODt)的值分别除以上述区域中包括的像素数来表示。 因此,通过使反射密度ODt为反射密度ODn的大约一半,由突出部分的低密度墨点产生的粒状外观和高密度墨点在较高密度墨点处产生的粒状外观 可以将分散在较低密度墨点中的密度墨点基本上彼此相等。 为此,较低浓度油墨的染料浓度优选为较高浓度油墨的浓度的约四分之一。

    Method and apparatus for printing
    3.
    发明授权
    Method and apparatus for printing 失效
    打印方法和装置

    公开(公告)号:US5926191A

    公开(公告)日:1999-07-20

    申请号:US961215

    申请日:1997-10-30

    摘要: In the case of printing in three-value level utilizing two kinds of inks mutually different densities for one color (higher and lower density inks), it is assumed that a reflection density of a region having a predetermined area when solid print is performed only by the lower density ink, and that when solid print is performed only by the higher density ink are expressed ODt and ODn, respectively. Since the granular appearance of the ink dots is expressed in terms of reflection density of one dot, the granular appearance of a lower density ink dot at a portion of image formed only by the lower density ink dots and the granular appearance of a higher density ink dot at a portion of image formed by the higher and lower density ink dots are expressed in terms of values of ODt and (ODn-ODt) divided by the number of pixels included the above region, respectively. Accordingly, by making the reflection density ODt to be approximately one half of the reflection density ODn, the granular appearance produced by the lower density ink dot at the highlighted portion and the granular appearance produced by the higher density ink dot at the portion where the higher density ink dots scattered in the lower density ink dots can be made substantially equal to each other. For this purpose, it is preferable that a dye concentration of the lower density ink is to be about one fourth of that of the higher density ink.

    摘要翻译: 在使用两种不同浓度的油墨(高浓度和低浓度油墨)的三值油墨印刷的情况下,假设仅在实施印刷时由具有预定区域的区域的反射浓度 较低密度的墨水以及仅通过较高密度墨水进行固体印刷时分别表示为ODt和ODn。 由于墨点的粒状外观以一点的反射密度表示,所以在仅由较低密度墨点形成的图像部分处的较低密度墨点的粒状外观和较高密度墨水的粒状外观 通过高密度和低密度墨点形成的图像的一部分,分别以除了上述区域的像素数除以ODt和(ODn-ODt)的值表示。 因此,通过使反射密度ODt为反射密度ODn的大约一半,由突出部分的低密度墨点产生的粒状外观和高密度墨点在较高密度墨点处产生的粒状外观 可以将分散在较低密度墨点中的密度墨点基本上彼此相等。 为此,较低浓度油墨的染料浓度优选为较高浓度油墨的浓度的约四分之一。

    Ink-jet print method and apparatus
    6.
    发明授权
    Ink-jet print method and apparatus 失效
    喷墨打印方法和装置

    公开(公告)号:US06601938B1

    公开(公告)日:2003-08-05

    申请号:US09307765

    申请日:1999-05-10

    IPC分类号: B41J221

    CPC分类号: G06K15/102 G06K2215/0094

    摘要: Print codes supplied from a host computer are received and analyzed to generate print data for the individual colors, and the generated print data are stored in print buffers corresponding to the colors. The print data corresponding to yellow ink with high lightness is expressed by binary data, and is printed by one dot per pixel by a single print scan. The print data corresponding to each of the remaining high-density (thick) inks is expressed by multi-valued data having a larger number of bits than the yellow data, and is printed by a plurality of print scans.

    摘要翻译: 接收并分析从主计算机提供的打印代码以生成各种颜色的打印数据,并且生成的打印数据被存储在与颜色对应的打印缓冲器中。 对应于高亮度黄色墨水的打印数据由二进制数据表示,并通过单次打印扫描以每像素一个点打印。 对应于每个剩余的高密度(厚)墨的打印数据由具有比黄色数据更大的位数的多值数据表示,并且通过多次打印扫描打印。

    Ink jet recording apparatus and method with modulatable driving pulse width
    7.
    发明授权
    Ink jet recording apparatus and method with modulatable driving pulse width 失效
    喷墨记录装置和具有可调驱动脉冲宽度的方法

    公开(公告)号:US06331039B1

    公开(公告)日:2001-12-18

    申请号:US08509667

    申请日:1995-07-31

    IPC分类号: B41J2938

    摘要: An ink jet recording apparatus, in which thermal energy is applied to ink in accordance with a driving signal applied to a heater to produce a bubble, by which ink is ejected onto a recording material, includes a driver for applying a plurality of driving signals to the heater for one ejection of one ink droplet. The driving signals comprise a first driving signal not ejecting the ink and a second driving signal for ejecting the ink, the second driving signal being applied after a rest period after the first driving signal. The apparatus further includes a controller for changing an amount of ink ejected by changing a length of the rest period and changing the first driving signal. The controller effects its changing operation in a first changing region in which the rest period is changed without changing the first driving signal and in a second changing region in which a length of the first drive signal is changed.

    摘要翻译: 一种喷墨记录装置,其中根据施加到加热器以产生气泡的驱动信号将墨水喷射到墨水上的墨水被喷射到记录材料上的喷墨记录装置包括用于将多个驱动信号施加到 一个喷墨一个墨滴的加热器。 驱动信号包括不喷射墨的第一驱动信号和用于喷射墨的第二驱动信号,第二驱动信号在第一驱动信号之后的休止期之后被施加。 该装置还包括控制器,用于通过改变休息时间的长度和改变第一驱动信号来改变喷射的墨量。 控制器在不改变第一驱动信号的第一变化区域中进行改变操作,而在第一变化区域中改变其中第一驱动信号的长度改变的第二变化区域。

    Ink jet recording apparatus and method using plural types of ink
    9.
    发明授权
    Ink jet recording apparatus and method using plural types of ink 失效
    喷墨记录装置和使用多种墨水的方法

    公开(公告)号:US5975678A

    公开(公告)日:1999-11-02

    申请号:US546966

    申请日:1995-10-23

    摘要: An image is recorded on a recording medium by recording dots of a black ink and a color ink discharged onto the recording medium from a recording head. A boundary proximity-degree detecting circuit detects the degree of positional proximity, i.e., closeness, between the recording dots of the black ink and the recording dots of the color ink at the boundary between these dots. A dot substituting circuit performs, in accordance with the detected degree of positional proximity, substitution of the black pixels with recording dots of a color ink at the boundary. Thus, pixels of the image to be recorded are replaced with recording dots of a color ink by an extent which is determined based on the degree of positional proximity between the pixels of the different colors. A sharp black image can be obtained with minimized color mixing at the boundary between the black image region and the color region, regardless of the degree of positional proximity between these regions.

    摘要翻译: 通过从记录头记录从记录介质排出的黑色墨水和彩色墨水的点,将图像记录在记录介质上。 边界接近度检测电路检测黑色墨水的记录点与这些点之间的边界处的彩色墨水的记录点之间的位置接近程度,即接近程度。 点取代电路根据检测到的位置接近度,根据边界处的彩色墨水的记录点来代替黑色像素。 因此,要记录的图像的像素被彩色墨水的记录点替换为基于不同颜色的像素之间的位置接近程度确定的程度。 可以在黑色图像区域和颜色区域之间的边界处以最小化的颜色混合获得清晰的黑色图像,而不管这些区域之间的位置接近程度如何。