Ricoh FT8680 Service Manual page 53

31 July 1995
5.6 HORIZONTAL LENS POSITIONING
5.6.1 For Original Position
There are three standard original positions for the platen, ADF, and CFF
modes.
ADF mode original position is 5 mm to rear of the platen mode original
position to maintain the original transport path (5 mm from the front scale).
CFF mode original position is 17.7 mm (5 + 12.7 mm) to rear of the platen
mode original position. This is to maintain the traction hole part transport path
(12.7 mm) in ADF.
The above figure shows the lens horizontal positions for each original mode
when the identical size paper is used.
5.6.2 For Paper Size
To keep the high paper feed performance, the center is assigned as the
paper feed standard position. Therefore, the lens horizontal position is
changed according to the paper size.
The figure shows the lens horizontal position for each paper size in full size
mode.
Copy Paper
Copy Paper
2-29
Lens Position
Horizontal
Platen
A171D516.wmf
Horizontal
Lens
Position
A171D503.wmf
OPTICS
Original Front
Edge
Original Front
Edge