Paper Empty Control - Konica Minolta bizhub 500 Service Manual

14. PAPER FEED SECTION (Tray 1/2)
14.3.4

Paper empty control

The paper empty of the tray is detected by the paper empty sensors /1 (PS5) [3] and /2 (PS12) [4]. And to
prompt the supply of paper before paper in the tray runs out completely, the paper near-empty sensors /1 (PS9)
[7] and /2 (PS15) [8] are equipped. The lift drive shaft [2] that brings up the lift plate [5] is provided with the actu-
ator [1] and PS9 and PS15 are turned ON and OFF by this actuator. When a sufficient amount of paper is loaded
on the tray, the actuator turns ON PS9 and PS15. However, when the amount of paper gets reduced and the lift
plate goes up, the actuator turns OFF PS9 and PS15. In this way, it is detected that the paper loaded in the tray
comes near to an end.
[1] Actuator
[2] Lift drive shaft
[3] Paper empty sensor /1 (PS5)
[4] Paper empty sensor /2 (PS12)
48
[7] [8]
[6]
Theory of Operation Ver1.0 Feb.2006
[1]
[5] Lift plate
[6] Coupling
[7] Near-empty sensor /1 (PS9)
[8] Near-empty sensor /2 (PS15)
[2]
[3][4]
[5]
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