Develop ineo+ 6500 Service Manual page 120

Theory of Operation Ver1.0 Sep.2006
B. Loop formation
• When the ADU stop sensor (PS20) [3] detects the rear end of paper and turns OFF, ADU loop roller [5]
stops after the specified time passed.
• While the paper is stopped with its leading edge nipped by the ADU loop roller, the ADU reverse roller [4]
continues to rotate.
• The ADU reverse roller stops after the rear end of the paper passed through. (after the specified time
passed from when the ADU loop roller stops.)
• The above two rollers' operation make the paper form a loop [1] between the two rollers.
• When the paper is forming the loop, its rear edge is pressed against the ADU reverse roller. This enables to
correct skew of the paper before starting the reverse paper conveyance.
[1] Loop
[2] ADU gate
[3] PS20
[3] [4]
[2] [1]
[5]
[4] ADU reverse roller
[5] ADU loop roller
19. ADU SECTION
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