Ink jet recording method and apparatus using temperature calculation
    4.
    发明授权
    Ink jet recording method and apparatus using temperature calculation 失效
    使用温度计算的喷墨记录方法和装置

    公开(公告)号:US5877785A

    公开(公告)日:1999-03-02

    申请号:US333342

    申请日:1994-11-02

    IPC分类号: B41J2/175 B41J2/05 B41J29/38

    摘要: An ink jet apparatus using an ink jet head having a heat generating element for generating thermal energy to be used to discharge ink, comprises a unit for deriving an amount .increment.Q.sub.i indicative of a heat amount stored in i (i.gtoreq.1) portions of said ink jet head sectioned by thermal time constants, corresponding to a heat amount applied to said ink jet head at a predetermined time interval .increment.t, a unit for multiplying an amount .increment.T.sub.i (n-1) indicative of the heat amount stored in the i-sectioned portion of the predetermined time interval .increment.t earlier by a predetermined constant E.sub.i corresponding to the sectioned thermal time constant, a unit for adding the amount .increment.Q.sub.i to the product, a unit for storing the sum as the amount .increment.T.sub.i (n) indicative of the heat amount stored in the i-sectioned portion, a unit for summing all amounts .increment.T.sub.1 (n) to determine an amount .increment.T corresponding to the heat amount stored in said ink jet head and a unit for controlling said ink jet head in accordance with the amount .increment.T.

    摘要翻译: 使用具有用于产生用于排出墨水的热能的发热元件的喷墨头的喷墨装置包括用于导出指示存储在i(i> / = 1)部分中的热量的量INCREMENT Qi的单元 对应于以预定时间间隔INCREMENT t施加到所述喷墨头的热量的所述喷墨头,所述热时间常数对应于表示存储在所述喷墨头中的热量的量INCREMENT Ti(n-1)的单位 预定时间间隔INCREMENT t的i切片部分早于对应于分段热时间常数的预定常数Ei,用于将数量INCREMENT Qi加到产品的单元,用于存储总和作为量INCREMENT Ti( n)表示存储在i分割部分中的热量的单位,用于求和所有量INCREMENT T1(n)的单位,以确定与存储在所述喷墨头中的热量相对应的量INCREMENT T,以及单位fo 根据INCREMENT T的数量来控制喷墨头。

    Data recording using randomized variations to prevent visual artifacts
due to non-uniformities in a printing apparatus
    7.
    发明授权
    Data recording using randomized variations to prevent visual artifacts due to non-uniformities in a printing apparatus 失效
    使用随机变化的数据记录,以防止由于打印设备中的不均匀性引起的视觉伪影

    公开(公告)号:US5914731A

    公开(公告)日:1999-06-22

    申请号:US311551

    申请日:1994-09-23

    IPC分类号: H04N1/405 B41J29/38 B41J2/205

    CPC分类号: H04N1/4057 B41J2/2128

    摘要: A column band pattern memory (10) stores six different column band patterns "SML, SLM, MSL, MLS, LSM, and LMS" obtained by re-arranging three different area modulation ranks (L, M, and S). A column band pattern generator (12) irregularly selects one of the column band patterns stored in the column band pattern memory (10) on the basis of a numerical value generated by a random number generator (11). The selected column band pattern is input to a dot area determination unit (13), and dot areas in units of columns are determined on the basis of the order of dot area modulation ranks (e.g., the order of S, M, and L) in the selected column band pattern. A pulse controller (14) performs pulse control to form dots in accordance with the dot areas determined by the dot area determination unit (13).

    摘要翻译: 列频带图案存储器(10)存储通过重新布置三个不同的区域调制等级(L,M和S)获得的六个不同的列频带图案“SML,SLM,MSL,MLS,LSM和LMS”。 列频带图案生成器(12)基于由随机数发生器(11)生成的数值,不规则地选择存储在列频带图案存储器(10)中的列频带模式之一。 选择的列带图案被输入到点区域确定单元(13),并且以点面积调制等级的顺序(例如,S,M和L的顺序)来确定以列为单位的点区域, 在所选的列带图案中。 脉冲控制器(14)根据由点区域确定单元(13)确定的点区域进行脉冲控制以形成点。

    Ink jet recording method and apparatus for preventing color boundary blur
    9.
    发明授权
    Ink jet recording method and apparatus for preventing color boundary blur 失效
    用于防止色边界模糊的喷墨记录方法和装置

    公开(公告)号:US6116720A

    公开(公告)日:2000-09-12

    申请号:US891723

    申请日:1997-07-14

    CPC分类号: B41J2/2107

    摘要: A head for discharging yellow ink, magenta ink, cyan ink and first black ink having a relatively fast penetration velocity to a recording medium and a head for discharging second black ink having a relatively low penetration velocity are used to print an image. When a black image is adjacent to a color image, the black image is formed by using the first black ink, and when the black image is not adjacent to the color image, the black image is formed by using the second black ink. A black ink and a plurality of color inks having a different penetration velocity to a recording medium than that of the black ink are also used to print an image. Whether a color image area is present in the vicinity of a black image area of record data or not is determined, and whether the black image area is to be formed by the black ink or by the color inks is decided in accordance with the determination result, and when the black image is to be formed by the color inks, the color inks are used based on a mask pattern pseudo-randomly prepared to make the change in tonality less recognizable.

    摘要翻译: 使用用于将具有相对较快的穿透速度的黄色墨水,品红色墨水,青色墨水和对记录介质具有相对快速穿透速度的第一黑色墨水的喷头和用于排出具有相对低的穿透速度的第二黑色墨水的喷射头来打印图像。 当黑色图像与彩色图像相邻时,通过使用第一黑色墨水形成黑色图像,并且当黑色图像不与彩色图像相邻时,通过使用第二黑色墨水形成黑色图像。 还使用黑色墨水和与黑色墨水相比具有与记录介质不同的穿透速度的多种颜色墨水来打印图像。 确定在记录数据的黑色图像区域附近是否存在彩色图像区域,并且根据确定结果确定黑色图像区域是由黑色墨水还是由颜色墨水形成 ,并且当通过彩色油墨形成黑色图像时,基于伪随机准备以使音调变化更不可识别的掩模图案使用彩色油墨。