Theory of Operation Ver. 8.0 Jun. 2008
16. Paper feed section
10
7
2
Composition/Operation
16.3.2
Tray3, 4
A. Paper Feed control
(1) Tray3
• When the interval between the paper and the preceding paper both fed from the tray3 is
short, the tray3 transport clutch is stopped to adjust the paper interval to the proper one.
• When paper reaches the intermediate roller, if the interval between the paper and the
preceding paper is short, the vertical transport motor is stopped to adjust the paper inter-
val to the proper one.
• The horizontal transport clutch 1 and 2 make the control in the same timing.
• Paper is fed from Tray3 and Tray4 at a speed faster than the system speed.
• Paper feed speed varies in order to feed paper at a faster speed to ensure a proper
paper interval when the interval gets longer.
A00JT2E526DA
Transport motor (M25)
Tray3 paper feed clutch (CL5)
Tray3 transport clutch (CL6)
Tray3 paper feed sensor (PS21)
Horizontal Transport clutch 1 (CL3)
Horizontal Transport clutch 2 (CL4)
Horizontal transport sensor (PS29)
Intermediate roller sensor (PS28)
vertical transport motor (M26)
Tray2 vertical transport motor (M7)
Tray2 vertical transport sensor (PS12)
Tray1 vertical transport motor (M5)
Tray1 vertical transport sensor (PS4)
Start key ON
Timing motor ON
Plain paper: OHP detection sensor ON
Thick paper: Timing roller sensor ON
* When there is no preceding paper
System speed (mm/s)
Transport speed (mm/s)
310 to 216
420
155 to 108
219
2
Y107522-3 Theory of Operation
