Center Creasing Mechanism - Konica Minolta magicolor 8650 Service Manual

5. Operations
5.5

Center creasing mechanism

• The entrance sensor detects the trailing edge of the paper.
• The paper feed amount is determined for each paper size as counted from the timing
when the trailing edge is detected. Center creasing is effected as follows. Specifically, the
paper undergoes a switchback operation and is transported to the center creasing posi-
tion as the motor is turned backward.
• The crease chopper is lowered and the center of the paper is pinched between the
crease rollers and this creates a crease in the paper.
• After the center creasing, the paper is transported by the transport roller and then the
registration roller as they are driven in that order.
Crease chopper
Crease motor (M10)
Crease roller home
position sensor (PS22)
10
Theory of operation Ver. 1.0 Oct. 2007
Transport roller
Transport sensor (PS2)
Crease chopper
Registration roller
Entrance sensor (PS1)
4511T2C510AA