公开(公告)号：US07995940B2

公开(公告)日：2011-08-09

申请号：US11838383

申请日：2007-08-14

申请人： Paul A Hosier ,  Shawn P Updegraff ,  Robert P Herloski ,  R Enrique Viturro ,  Howard A Mizes ,  Kenneth R Ossman

发明人： Paul A Hosier ,  Shawn P Updegraff ,  Robert P Herloski ,  R Enrique Viturro ,  Howard A Mizes ,  Kenneth R Ossman

IPC分类号： G03G15/00

CPC分类号： G03G15/5041 ,  G03G2215/00042 ,  G03G2215/0164

摘要： A printing apparatus has a substantially shiny photoreceptor imaging surface, and a photosensor array disposed to receive specularly-reflected light from the imaging surface. A quantity of toner is placed on the imaging surface, and data is derived based on light reflected from the imaging surface. The reflected light is filtered to a color effectively complementary to the toner color. The system avoids noise caused by diffusely-reflected light from powdered toner.

摘要翻译： 打印设备具有基本上光泽的感光体成像表面和设置成从成像表面接收镜面反射光的光电传感器阵列。 将一定量的调色剂放置在成像表面上，并且基于从成像表面反射的光导出数据。 反射光被过滤到与调色剂颜色有效互补的颜色。 该系统避免了由粉状调色剂的漫反射光引起的噪音。

公开(公告)号：US07649392B2

公开(公告)日：2010-01-19

申请号：US12034121

申请日：2008-02-20

申请人： Scott L Tewinkle ,  Paul A Hosier

发明人： Scott L Tewinkle ,  Paul A Hosier

IPC分类号： H03K5/12

CPC分类号： H03K5/04

摘要： A system for controlling a slew rate of a signal, such as used in an imaging device, comprises a counter for measuring a duration that the signal drops from a maximum voltage to a predetermined reference voltage; a register for retaining a desired duration that the signal drops from the maximum voltage to the predetermined reference voltage; and a comparator for comparing the measured duration to the desired duration, the comparator being operative of a current source for the signal. An anti-oscillation circuit prevents the system from oscillating between two discrete durations.

摘要翻译： 用于控制诸如在成像装置中使用的信号的转换速率的系统包括用于测量信号从最大电压下降到预定参考电压的持续时间的计数器; 用于保持信号从最大电压下降到预定参考电压的期望持续时间的寄存器; 以及比较器，用于将测量的持续时间与期望的持续时间进行比较，该比较器可操作该信号的电流源。 反振荡电路防止系统在两个离散持续时间之间振荡。