公开(公告)号：US06201936B1

公开(公告)日：2001-03-13

申请号：US09454421

申请日：1999-12-03

申请人： Eric M. Gross ,  Mark A. Scheuer ,  Edward W. Smith, Jr. ,  Yao Rong Wang

发明人： Eric M. Gross ,  Mark A. Scheuer ,  Edward W. Smith, Jr. ,  Yao Rong Wang

IPC分类号： G03G1500

CPC分类号： G03G15/5041 ,  G03G2215/00042 ,  G03G2215/00054 ,  G03G2215/017

摘要： A process control method for color quality control maintains a preselected developed mass per unit area (DMA) of black solid area by adjusting the development field during run-time operation. In order to estimate the DMA of a solid black control patch, which is outside the sensing range of an infra-red densitometer (IRD), an estimation technique is employed which accounts for system changes due to adjustment of the development field. The estimation technique includes generating two or more test patches, using a patch generator, which have DMA readings within the sensing range of the IRD. The DMA readings and corresponding development voltages of the test patches are sensed and used to calculate a developability curve. The developability curve is projected into a region beyond the sensing range of the IRD. From the developability curve, the DMA of the solid black control patch is estimated and employed in a closed feedback loop to return the system to the preselected DMA by adjusting the development field. Development field control provides faster response to toner density changes than toner concentration control, and thus, results in better color quality control.

摘要翻译： 用于颜色质量控制的过程控制方法通过在运行时操作期间调整开发字段来保持黑色固体区域的每单位面积（DMA）的预选开发质量。 为了估计在红外光密度计（IRD）的感测范围之外的实心黑色控制贴片的DMA，采用了由于开发领域的调整而导致的系统变化的估计技术。 估计技术包括使用在IRD的感测范围内具有DMA读数的补丁生成器来生成两个或更多个测试补丁。 测量贴片的DMA读数和相应的显影电压被检测并用于计算显影性曲线。 显影性曲线投影到超出感光范围的区域内。 根据可开发性曲线，通过调整开发区域，在闭环反馈环路中估计并使用固体黑色控制贴片的DMA以将系统返回到预选的DMA。 开发现场控制比调色剂浓度控制提供更快的对调色剂浓度变化的响应，从而导致更好的颜色质量控制。