| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a processing control method and an apparatus for improved image consistency, since many factors, such as temperature, humidity, ink or toner age, and/or component wear, tend to move the output of a printing system away from the ideal or the target output. <P>SOLUTION: Density or reflectance targets for respective first and second marking engines of a document processing system are determined. A series of control patches is printed with the respective first and second marking engines. Relative reflectance values of each control patch printed with the first and second engines are determined. A first marking engine for relative reflectance error values of each control patch and a second marking engine for relative reflectance error values of each control patch are determined, respectively, based at least on (a) corresponding first engine relative reflectance value and target relative reflectance value and (b), corresponding second engine relative reflectance value and target relative reflectance value. Based at least on either of the first or the second marking engine relative reflectance error values, at least either of the first or the second engine relative reflectance targets is adjusted, and image quality control is improved. <P>COPYRIGHT: (C)2008,JPO&INPIT |
