Ricoh FT4460, Service Manual, Page: 249 / 413

28 February 1989
2.3 DOCTOR GAP ADJUSTMENT (Black)
1. Remove the toner tank (3 screws) and dump the black developer.
2. Remove the inlet seal plate [A]. (1 screw)
3. Remove any developer on the black development roller.
4. Loosen the four fixing screws [C], and adjust the doctor gap with the jig
[B] (Part No. A006 9513).
ADJUSTMENT STANDARD: 0.75 ± 0.07mm
a) Before adjusting the doctor gap, remove the developer from the
development roller.
b) When reassembling the development unit, check and adjust the
doctor gap if necessary.
c) When reassembling, insert the inlet seal [J] in the direction of
arrow.
CAUTION: If the doctor gap is too wide, blocking of developer, noise, jitter-
ing, white lines, or carrier transfer (to drum and copies) may
occur.
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