Konica Minolta A00F011 Service Manual - Page 119
Simplified correction control, Individual registration control
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magicolor 4650EN magicolor 4650DN 21. Image stabilization control Theory of operation Ver.1.0 Nov. 2007 21.1.2 Simplified correction control • If the simplified correction control is not effective in making a good correction, the complete correction control is executed. Control name Purpose 1 IDC sensor offset value check To check the low gain output value and offset voltage value of the IDC sensor when the shutter is closed. 2 IDC sensor reflection output To check the low gain output value of the IDC sensor using the intensity value set last for the clear transfer belt surface on which no toner sticks. 3 Developing bias control (simplified Vpp check) To determine whether there is a leak based on the measurement value taken last. 4 Developing bias duty control (control of the maximum amount of toner sticking to the transfer belt) To correct the amount of toner based on the measurement value taken last. 5 Laser light intensity control (simplified correction control) To correct based on the measurement value taken last. 6 Registration correction control (simplified control) To correct incorrect color registration that occurs due to variations in parts of the main body used for regulating different drawing positions. The simplified control uses a simplified registration pattern to make the correction. 21.1.3 Individual registration control Control name 1 IDC sensor reflection output 2 Registration correction control (simplified control) Purpose To check the low gain output value of the IDC sensor using the intensity value set last for the clear transfer belt surface on which no toner sticks. To correct incorrect color registration that occurs due to variations in parts of the main body used for regulating different drawing positions. Composition/Operation 84