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    • 13. 发明申请
    • IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
    • 图像形成装置和图像形成方法
    • US20100260512A1
    • 2010-10-14
    • US12759915
    • 2010-04-14
    • Atsushi ImamuraYujiro NomuraYoshihisa Saka
    • Atsushi ImamuraYujiro NomuraYoshihisa Saka
    • G03G15/16
    • G03G15/1605G03G15/0131G03G2215/0129
    • An image forming apparatus includes an image carrier which moves while carrying an image and a transfer roller including a roller base material which faces the image carrier and rotates. A concave portion is positioned on a peripheral surface of the roller base material. A grip unit on the concave portion grips a recording medium. An elastic layer is disposed on a peripheral surface of the roller base material. The transfer roller grips a recording medium by the grip unit when the concave portion faces the image carrier and passes the recording medium through a nip between the image carrier and the elastic layer when facing each other so that the image carried on the image carrier is transferred on the recording medium. A roller driving unit rotates the roller base material. A control unit controls the roller driving unit to adjust a timing for forming the nip.
    • 图像形成装置包括:承载图像时移动的图像载体和包括面向图像载体并旋转的辊基材的转印辊。 凹部位于辊基材的周面上。 凹部上的夹持单元夹持记录介质。 弹性层设置在辊基材的圆周表面上。 当凹部面向图像载体时,转印辊通过抓握单元夹持记录介质,并且当彼此面对时使记录介质通过图像载体和弹性层之间的辊隙,使得载体在图像载体上的图像被转印 在记录介质上。 辊驱动单元使辊基材旋转。 控制单元控制辊驱动单元来调节形成辊隙的时间。
    • 14. 发明申请
    • IMAGE DATA GENERATING METHOD, PRINTING METHOD, IMAGE DATA GENERATING APPARATUS, AND PRINTER
    • 图像数据生成方法,打印方法,图像数据生成装置和打印机
    • US20080291473A1
    • 2008-11-27
    • US12115801
    • 2008-05-06
    • Yasuhiro TakemotoAtsushi ImamuraHiroshi Asai
    • Yasuhiro TakemotoAtsushi ImamuraHiroshi Asai
    • G06K15/00
    • H04N1/405G06K15/107
    • A head in a printer has an outlet row including a plurality of outlets arranged in a width direction perpendicular to a scan direction. A threshold matrix is stored in a main body control part, and sleep elements representing sleep of ejection of ink are arranged in the threshold matrix at a regular interval in each element row which is a plurality of elements arranged in a row direction corresponding to the width direction. The threshold matrix is compared with a grayscale original image to generate data of a halftone image where during printing, the number of outlets included in each outlet group not brought into sleep state continuously in the width direction is made equal to or larger than 1 and equal to or smaller than a predetermined number. Thus, it is possible to easily suppress occurrence of unevenness in a printed image, caused by cross talk between outlets.
    • 打印机中的头部具有出口列,其包括沿垂直于扫描方向的宽度方向布置的多个出口。 阈值矩阵被存储在主体控制部分中,并且表示墨的弹出睡眠的睡眠元素以规则的间隔布置在每个元素行中,该元素行是排列在与宽度相对应的行方向上的多个元素 方向。 将阈值矩阵与灰度原始图像进行比较以产生半色调图像的数据,其中在打印期间,包括在不在宽度方向上连续进入睡眠状态的每个出口组中的出口的数量等于或大于1并且等于 达到或小于预定数量。 因此,可以容易地抑制由出口之间的串扰引起的印刷图像中的不均匀性的发生。
    • 18. 发明授权
    • Method and apparatus for simulating color print
    • 用于模拟彩色打印的方法和装置
    • US5973800A
    • 1999-10-26
    • US883799
    • 1997-06-27
    • Nobuaki UsuiAtsushi Imamura
    • Nobuaki UsuiAtsushi Imamura
    • G01J3/28G01J3/50H04N1/46
    • G01J3/50G01J3/504G01J2003/2866G01J3/462
    • An illuminance spectrum I of reflected light from a color print of an N-order color having an arbitrary dot percent d.sub.1-N is defined by a diffuse reflection coefficient Sb(d.sub.1-N,.lambda.) and a specular reflection coefficient Ss(d.sub.1-N,.lambda.). These reflection coefficients are obtained in the following manner. A plurality of reference colors are specified on each of N.times.2.sup.(N-1) sides that constitute an N-dimensional color space including the N-order target color. Each reflection coefficient is expressed by a linear combination of a plurality of reference reflection coefficients Sb and Ss, which are set in advance for the plurality of reference colors. The illuminance spectrum of reflected light is then determined according to these reflection coefficients Sb and Ss. Color data representing the colors of the print in a colorimetric system suitable for an output device are subsequently generated from the illuminance spectrum.
    • 来自具有任意点百分比d1-N的N次色彩的彩色照片的反射光的照度谱I由漫反射系数Sb(d1-N,λ)和镜面反射系数Ss(d1-N ,lambda)。 这些反射系数以下列方式获得。 在构成包含N阶目标色的N维色彩空间的Nx2(N-1)侧的每一个上指定多个基准颜色。 每个反射系数由多个参考反射系数Sb和Ss的线性组合来表示,这些参考反射系数被预先设置为多个基准颜色。 然后根据这些反射系数Sb和Ss确定反射光的照度光谱。 随后从照度谱产生​​表示适合于输出装置的比色系统中的打印颜色的颜色数据。
    • 19. 发明授权
    • Method and apparatus for simulating color print
    • 用于模拟彩色打印的方法和装置
    • US5940580A
    • 1999-08-17
    • US887495
    • 1997-07-02
    • Nobuaki UsuiAtsushi Imamura
    • Nobuaki UsuiAtsushi Imamura
    • G01J3/46G06F15/00
    • G01J3/46G01J3/462G01J3/504
    • An N-dimensional correction space is constructed with weighting coefficients .xi. and .eta. that are used for determining reflection coefficients for an N-order target color, where the weighting coefficients .xi. and .eta. specify the lengths of the sides constituting the N-dimensional correction space, and where 2.sup.N reference colors are located at the corners of the N-dimensional correction space. The N-dimensional correction space is divided by N pieces of (N-1)-dimensional spaces that run through the target color, into 2.sup.N partial N-order correction spaces. The reflection coefficient for the target color is determined by multiplying a reference reflection coefficient with respect to each of the 2.sup.N reference colors by the volume of a partial N-dimensional correction space that is located at a diagonal position against a coordinate point of each reference color and summing up the results of multiplication for the 2.sup.N reference colors.
    • 利用用于确定N阶目标颜色的反射系数的加权系数xi和eta来构造N维校正空间,其中加权系数xi和eta指定构成N维校正空间的边的长度, 并且其中2N个参考颜色位于N维校正空间的角部。 N维校正空间被划分为N个(N-1)个维空间,穿过目标颜色,分成2N个N阶校正空间。 目标颜色的反射系数是通过将参考反射系数相对于每个2N参考色乘以相对于每个参考颜色的坐标点位于对角位置的部分N维校正空间的体积来确定的 并对2N参考色的乘法结果进行求和。