Oki C9600 Service Manual

Also see for C9600 Series: Printing guide User guide Manual User guide Install guide

Contents

Oki C9600 Service Manual Manual pdf 43 page image

Oki Data CONFIDENTIAL42930511TH Rev. 2 43 /2.6 Color Drift CorrectionThe C9800/C9600 comes with several ID units and LED heads, therefore, causes color drift. Thismechanical color drift can automatically be corrected with the following procedures.(1) Automatically Corrected Color Drift1 X Axis Color Drift (position off-alignment due to LED head)2 Skew Color Drift (position off-alignment due to LED head)3 Y Axis Color Drift (I/D unit and position off-alignment due to LED head)(2) Correction MethodThe color drift detection pattern set is printed on the belt. This is then read by the reflectionsensor to detect the color drift value of each color and therefore, determine the correctionlevel. The modification takes place by comparing the each colors’ (Cyan, Magenta andYellow) write timing with black, according to the correction value.2.7 Image Transfer Control According to Environmental Change (Room Tempera-ture and Relative Humidity)The C9800/C9600 measures the room temperature with the room temperature sensor and measuresthe relative humidity with the humidity sensor. It further computes the optimal transfer voltage underthe environmental conditions (temperature and RH) measured. Then printing is controlled in real-timeat this optimal voltage.