Ricoh FW780 Service Manual - Page 333

Detailed Descriptions 2. DETAILED SECTION DESCRIPTIONS 2.3 EXPOSURE 2.3.2 PAPER AND ORIGINAL FEED (B048 ONLY) EXPOSURE [E] [L] [J] [C] [D] 26 mm [K] [F] [G] [H] [I] 10 mm J: Original Rear Roller K: Original Rear Sensor [A] [M] L: Fiber Optics Array [B] B047D500.WMF B047D501.WMF NOTE: For clarity's sake, the following description will refer to the paper's edges as edge [A] (furthest edge from the operator) and edge [B] (closest to the operator). Original Positioning In the B048 copier, edge [A] of the original is placed onto the original table. This activates the original entrance sensor [C]. The main motor turns the original entrance rollers [D]. The quenching lamp, development bias and PTL also turn on. For proper feeding (especially for a thin original), the original entrance rollers rotate backwards (feeding towards the operator) for 300 ms. This ensures that the original is gripped firmly by both of the original entrance rollers [D], feeding it evenly. SM 2-1 B047/B048