Xerox 6250N Service Manual - Page 49
n of this control is outlined below, C, K, M, and Y with each color - phaser manual
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Page 49 highlights
+n of this control is outlined below: 1. With no toner on the Transfer Roller, the output value of Sensor, CTD (ADC) is measured to determine the threshold value. 2. Patches for color registration control are generated on the Transfer Roller. These patches are composed of 10mm lines of each toner color in the following order: K, C, K, M, K, and Y with each color dispensed in the amount of four dispense counts. The string of patches is led by a black trigger patch that is larger than the registration patches. 10mm K K C K M K Y 3. The density of patches generated by the CTD (ADC) sensor is measured. About one turn of BTR 4. The amount of registration shift is calculated from the threshold value determined in Step 1 and the patch density measured in Step 3. 6250-068 5. The laser write timing is changed to compensate for the amount of registration shift. 2-10 Phaser 6250 Color Laser Printer Service Manual
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