DocuCutter 545
Slitter Position Drive
Each Slitter has its own positioning drive motor (stepper
motor). The use of a stepper motor ensures highly
accurate positioning of the slitter unit. Each stepper motor
drives a lead screw. The Slitters contain a bearing that
rides on the lead screw, so as the lead screw turns, the
Slitter is driven from side to side. Direction of the Slitter
movement is determined by the stepper motor control
signal.
Slitter Positioning
Each job contains position information for the Slitters. The
program information sets the Slitter position each time a
sheet is processed. This method provides extremely
accurate performance.
When a job is executed, each stepper motor is driven until
the Slitters arrive at the home position (home position is
next to the side frame where each sensor is located).
Next, the stepper motors drive the Slitters in the opposite
direction, away from the side frame, until the desired
position is obtained. Position information is monitored by
the stepper motor drive signal.
Once the Slitter positions are correct, the DocuCutter
begins to drive the Slitter cutting drive gears, thus
providing slitting energy. Then the drive rollers convey the
paper through the machine.
26 DocuCutter 545 Training Guide © 2002, Duplo USA Corporation
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