Ricoh FT7770 Service Manual page 239

30
April, '89
Remove the paddle roller [A] and loosen the pre-doctor plate (5 screws
1.
[B]).
2. Insert a 1.60 mm thickness gauge [C] between the pre-doctor plate
and the development roller [E] at the positions shown.
Tighten the pre-doctor plate while pressing down the development roller
3.
and pressing the pre-doctor plate against the thickness gauge.
Check that the pre-doctor gap is correct and even at all positions.
4.
- The Doctor Gap -
Install the doctor blade [F]. (Tighten screws [G] temporarily.)
1.
2. Insert a 0.9 mm thickness gauge [H] between the doctor blade
development roller
3. Tighten the doctor blade (2 screws) while pressing down the development
roller and pressing the doctor blade against the thickness gauge.
4. Check that the doctor gap is correct and even at all positions.
[I].
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[D]
and the