中科微点-全球专利检索

  1. Login
  2. Sign Up
Invention Grant
US07899348B2 Image forming apparatus with developing bias correcting portion that changes a developing density adjustment pattern 有权
具有改变显影浓度调整图案的显影偏压修正部分的图像形成装置

Image forming apparatus with developing bias correcting portion that changes a developing density adjustment pattern
Abstract:
A controller takes in a detection signal indicating the surface electrical potential of a photoconductive drum (7) from a surface electrical potential sensor (step #1), and determines whether the surface electrical potential is smaller than the predetermined threshold value (step #2). As a result, when the controller (6) determines that the surface electrical potential is equal to or greater than the predetermined threshold value (NO in step #2), it uses the low print rate density patch to execute the density adjustments in accordance with the toner density and the developing bias associated with the density patch (step #3). When the controller (6) determines that the surface electrical potential is smaller than the predetermined threshold value (NO in step #1), it uses a high print rate density patch to execute the density adjustments in accordance with the toner density and the developing bias associated with the density patch (step #4).
Abstract(Chinese):

控制器从表面电位传感器接收表示感光鼓（7）的表面电位的检测信号（步骤＃1），并确定表面电位是否小于预定阈值（步骤＃2） 。 结果，当控制器（6）确定表面电位等于或大于预定阈值（步骤＃2中为“否”）时，使用低打印速率密度贴片来执行根据 调色剂密度和与密度贴片相关的显影偏压（步骤＃3）。 当控制器（6）确定表面电位小于预定阈值（步骤＃1中为“否”）时，使用高打印速率密度贴片根据调色剂浓度和显影偏压执行浓度调节 与步骤＃4相关联。

Public/Granted literature
Information query
Espacenet
Patent Agency Ranking
0/0