Adjustment Of Development Roller Gaps - Ricoh FT7770 Service Manual

12 July '86

4. Adjustment of Development Roller Gaps

The Flow
- Gap -
- The Pre-doctor Gap -
- The Doctor Gap -
1. Remove the developer. (Refer to "Developer Removal.")
2. Remove the upper and the lower covers. (Refer to "Development Roller
and Paddle Roller Removal". )
3. Clean the surface of the development roller, doctor blade, flow plate,
and the pre-doctor plate with a soft cloth.
- The Flow Gap -
1. Remove the doctor blade [A] (2 screws).
Loosen the flow plate (3 screws
2.
3. Insert a 1.75 mm thickness gauge [C] between the flow plate [D] and the
development roller [E] at the positions shown.
4. Tighten the flow plate while pressing down the development roller and
pressing the flow plate against the thickness gauge.
5. Check that the flow gap is correct and even at all positions.
ADJUSTMENT STANDARD: 1.75 mm ± 0.15 mm
ADJUSTMENT STANDARD: 1.6 mm ± 0.1 mm
ADJUSTMENT STANDARD: 0.9 mm ± 0.1 mm
[B]).
5-25
30 '89
April,