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    • 28. 发明申请
    • APPARATUS AND METHOD FOR GRAY LEVEL PRINTING
    • 灰度级打印的设备和方法
    • WO01089194A2
    • 2001-11-22
    • PCT/US2001/015631
    • 2001-05-15
    • B41J2/44B41J2/45B41J2/455G03G15/04G03G15/043H04N1/23H04N1/29H04N1/40H04N
    • H04N1/40031H04N1/29H04N1/40087
    • A copier or a printer (10) includes a controller 16/30 with a rendering algorithm that groups sets of adjacent pixels into sets of adjacent cells where each cell corresponds to a halftone dot of an image. The algorithm operates in conjunction with a gray scale printhead (22). In sending data to the printhead, the controller (16) parses a scanned image and set the exposure for each pixel in accordance with a growth and density program. The algorithm selectively grows halftone dots from zero size to a desired size equal to or less than a maximum size. It repeats this step for the rest of the pixels until the cell is at its desired size and at an initial density. If a higher density is desired, the algorithm selectively adjusts the fully grown cells by sequentially increasing the level of exposure of each pixel in the cell. The image is developed with developer including a hard magnetic carrier and toner.
    • 复印机或打印机(10)包括具有渲染算法的控制器16/30,其将相邻像素的集合分组成相邻单元的集合,其中每个单元对应于图像的半色调点。 该算法与灰度打印头(22)一起操作。 在向打印头发送数据时,控制器(16)根据增长和密度程序解析扫描图像并设置每个像素的曝光。 该算法将半色调点从零大小选择性地增长到等于或小于最大尺寸的期望大小。 对于剩余的像素重复此步骤,直到单元格处于其所需的大小和初始密度。 如果需要更高的密度,则算法通过依次增加单元中每个像素的曝光程度来选择性地调整完全生长的单元。 图像用显影剂显影,包括硬磁性载体和调色剂。
    • 29. 发明申请
    • BLANK EXPOSURE APPARATUS AND IMAGE FORMING DEVICE
    • 空白曝光装置和图像形成装置
    • WO00055693A1
    • 2000-09-21
    • PCT/JP2000/001566
    • 2000-03-15
    • H04N1/29G03G15/047G03G21/00G03G21/08G03G21/14
    • G03G15/047G03G21/08G03G2215/0453
    • A blank exposure apparatus producing no black stripe on the front edge of a form, for forming a non-image area on a photosensitive body by exposing the surface of the photosensitive body to light to eliminate the charge thereon. The blank exposure apparatus includes a blank exposure lamp constituted of an array of multiple light-emitting diodes (31), a constant-voltage power supply circuit (35) for applying a constant voltage to the light-emitting diodes (31), and a switching element (36) for turning on/off the constant voltage. The control unit (110) controls the switching elements (36) when the blank exposure lamp is turned off and generates one or more pulse voltages to apply them to the blank exposure lamp, thus decreasing the amount of light from the blank exposure lamp gradually when it is turned off. An image forming device is also disclosed.
    • 在形状的前边缘上不产生黑色条纹的空白曝光装置,用于通过将感光体的表面曝光以在其上消除电荷而在感光体上形成非图像区域。 空白曝光装置包括由多个发光二极管(31)的阵列构成的空白曝光灯,用于向发光二极管(31)施加恒定电压的恒压电源电路(35),以及 用于接通/断开恒定电压的开关元件(36)。 当空白曝光灯关闭时,控制单元(110)控制开关元件(36),并产生一个或多个脉冲电压以将其施加到空白曝光灯,从而逐渐减少来自空白曝光灯的光量 它被关闭。 还公开了一种图像形成装置。
    • 30. 发明申请
    • HARD IMAGING DEVICE VAPOR REMOVAL SYSTEMS, DEVICES AND METHODS
    • 硬成像装置蒸汽除去系统,装置和方法
    • WO2004112375A1
    • 2004-12-23
    • PCT/US2004/018306
    • 2004-06-08
    • HEWLETT-PACKARD DEVELOPMENT COMPANY L.P.LEE, Michael H.
    • LEE, Michael H.
    • H04N1/29
    • B41J11/0015
    • Hard imaging device vapor removal systems (36), hard imaging devices (10), and hard imaging methods are described. According to one embodiment, a hard imaging device vapor removal system (36) inches a supply path (63) configured to supply air (64) to an imaging region (19) of a hard imaging device (10) configured to use a liquid ink marking agent to form a plurality of hard images using media, wherein the air (64) of the supply path (63) is supplied to remove carrier vapor of the liquid ink marking agent resulting from imaging operations of the hard imaging device (10), an exhaust path (67) configured to remove at least some of the carrier vapor externally of the imaging region (19) using the supplied air (64), and a bypass path (65) configured to supply supplemental air (66) to the supplied air (64) exhausting the carrier vapor of the liquid ink marking agent.
    • 描述了硬成像装置蒸汽去除系统(36),硬成像装置(10)和硬成像方法。 根据一个实施例,一硬化成像装置蒸气去除系统(36)英寸供应路径(63),其被配置为将空气(64)供应到硬成像装置(10)的成像区域(19),该成像区域构造成使用液体墨 使用介质形成多个硬图像,其中供应路径(63)的空气(64)被供应以去除由硬成像装置(10)的成像操作引起的液体墨水标记剂的载气蒸气, 排气路径(67),被配置为使用供应的空气(64)去除成像区域(19)外部的至少一些载流子蒸汽;以及旁路路径(65),被配置为向所提供的空气供应补充空气(66) 空气(64)排出液体墨水标记剂的载体蒸气。