2-43
CHAPTER 2 OUTLINE OF OPERATION
5.3 Paper Feed System
5.3.1 Outline
The paper feed system feeds a stack of sheets (coming from the finisher) to the position
where the center of the paper stack (stitching position) is aligned to the stapler's staple, allow-
ing the next step (stitching and folding) to be performed.
When sheets of paper have been stacked and aligned on the processing tray, the paddle mo-
tor (M2) rotates in the reverse direction, causing the swing guide to descend. As the swing
guide descends, the paper stack is sandwiched between the upper and lower stack delivery
rollers. The delivery motor (M3) rotates in the reverse direction, feeding the paper stack to-
ward the saddle unit. When the leading edge of the paper stack reaches the folding position
sensor (PI10), the finisher controller PCB drives the delivery motor a specified number of mo-
tor pulses to stop the center of the paper stack (stitching position) at the stapler's staple posi-
tion. Before the paper stack passes through the stack feed rollers, the feed motor (M1) is
driven to rotate the stack feed roller (lower) so that the leading edge of the paper stack is not
bent.
F02-503-01
Stack delivery roller (upper)
Paper stack
Stack delivery roller
(lower)
Stack feed roller (lower)
Fold position sensor
Summary of Contents for DF-75
Page 1: ...SERVICE MANUAL Published in Aug 01 5FG70760 DF 75...
Page 12: ...CHAPTER 1 GENERAL DESCRIPTION...
Page 24: ...CHAPTER 2 OUTLINE OF OPERATION...
Page 89: ...CHAPTER 3 MECHANICAL SYSTEMS...
Page 132: ...CHAPTER 4 MAINTENANCE AND INSPECTION...
Page 135: ...CHAPTER 5 TROUBLESHOOTING...
Page 142: ...5 7 CHAPTER 5 TROUBLESHOOTING...
Page 145: ...5 10 CHAPTER 5 TROUBLESHOOTING 2 1 2 Motor PCBs M7 M8 M5 M4 M3 M6 M1 M2 1 F05 201 02...
Page 175: ...5 40 CHAPTER 5 TROUBLESHOOTING...
Page 176: ...APPENDIX...
Page 180: ...A 4...
Page 184: ...A 8 APPENDIX...
Page 198: ...A 22...