Tray Paper Lifting Motion Control - Konica Minolta magicolor 8650 Service Manual

16. Paper feed section (Tray2, Tray3)
16.3.8

Tray paper lifting motion control

A. When tray is slid in
• Paper feed tray 2 and paper feed tray 3 use the same control system to life up paper.
• When the upper limit sensor is unblocked (OFF) with the tray being closed (device detec-
tion sensor being blocked), the tray lift-up motor will rotate to start lifting up the paper lift-
ing plate.
• When the upper limit sensor is blocked (ON) after the paper lifting plate starts moving up,
the lift-up motor will stop to stop lifting the paper lifting plate.
Lift-up motor
Device detection sensor
Upper limit sensor
Lift-up motor
B. During a print cycle
• When the amount of paper decreases as the unit keeps printing, the feed roller will grad-
ually come down to unblock the upper limit sensor. The lift-up motor will rotate again to
lift up the paper lifting plate.
• When the upper limit sensor is blocked (ON), the lift-up motor will stop to stop lifting the
paper lifting plate.
• The sequence of these operations is repeated to keep constant the pressure between
the paper take-up roller and paper stack (paper take-up pressure) regardless of the
amount of paper still available for use.
84
Paper lifting plate
Tray slid in
9J06T2C010DA
Theory of Operation Ver. 2.0 Nov. 2007
Upper limit sensor
4036ma2607c0
Lifting completed
Upper limit sensor
9J06T2C009DA
4038T2C141AA
9J06T2C009DA