公开(公告)号：US4581309A

公开(公告)日：1986-04-08

申请号：US677800

申请日：1984-12-04

申请人： Yasuo Yamada ,  Harutaka Sudo

发明人： Yasuo Yamada ,  Harutaka Sudo

IPC分类号： G03G13/01 ,  G03G15/01

CPC分类号： G03G13/01

摘要： A three-color separation electrophotographic color reproduction process which includes primary uniform charge steps, color separation image exposure steps, development steps and transfer steps. The process further includes between each image exposure step and development step a uniform exposure step and a secondary charge step. The secondary charge step is carried out either by DC corona discharge of the same plurality as the primary charge step or by AC corona discharge together with DC corona discharge. The quantity of light of the uniform exposure step and the quantity of charge of the secondary charge step are controlled, to reduce stepwise, as the second and third primary color reproduction proceeds.

摘要翻译： 三色分离电子照相色彩再现方法，其包括主要的均匀电荷步骤，分色图像曝光步骤，显影步骤和转印步骤。 该方法还包括在每个图像曝光步骤和显影步骤之间进行均匀的曝光步骤和次级充电步骤。 二次充电步骤通过与主充电步骤相同的DC电晕放电或通过AC电晕放电与DC电晕放电一起进行。 控制二次充电步骤的均匀曝光步骤的光量和次充电步骤的电量，以便随着第二和第三原色再现的进行逐步减小。

公开(公告)号：US5198909A

公开(公告)日：1993-03-30

申请号：US522892

申请日：1990-05-14

申请人： Masuji Ogiwara ,  Kuninobu Nagano ,  Kimihito Ohmori ,  Harutaka Sudo

发明人： Masuji Ogiwara ,  Kuninobu Nagano ,  Kimihito Ohmori ,  Harutaka Sudo

IPC分类号： G03B27/50 ,  H04N1/04 ,  H04N1/10 ,  H04N1/193

CPC分类号： H04N1/04 ,  H04N1/02875 ,  H04N1/1017 ,  H04N1/193 ,  H04N2201/046

摘要： A vibration preventive system in use with an image recording apparatus of the type in which an original is scanned by reciprocatively moving an imaging unit by a stepping motor in two different types of scan modes, a forward scan mode in which an original read region is a constant speed region and a back scan mode to return the imaging unit to an original position at a high speed, the vibration preventive system comprising a drive current control for controlling a drive current fed to the stepping motor in such a way that in the constant speed region, drive current for driving the stepping motor is changed to a value smaller than that in an acceleration region. In the forward scan mode, the drive current is changed before the imaging unit reaches the registration position or after the end of acceleration in the forward scan mode. When the imaging unit is between them, the drive current is changed at a point in the undershoot of a transient vibration after the end of acceleration, or at the tail edge of the forward scan mode.

摘要翻译： 一种与通过步进电机以两种不同类型的扫描模式往复移动成像单元来扫描原件的类型的图像记录装置的防振系统，其中原始读取区域为 恒速区域和反向扫描模式以使成像单元以高速返回原始位置，该防振系统包括用于以恒定速度控制供给步进电机的驱动电流的驱动电流控制 驱动步进电动机的驱动电流变化为比加速区域小的值。 在正向扫描模式中，驱动电流在成像单元到达对位位置之前或在正向扫描模式中的加速结束之后改变。 当成像单元在它们之间时，驱动电流在加速结束之后的瞬时振动的下冲点处或在正向扫描模式的尾部边缘处改变。