Ricoh C226 Service Manual page 287

No. Item
18 Drum Unit
C226
Both ends of the metal screen [A] pass through a half etching
process. The half etch area [B] is thinner than the other areas. This
improves the outer portion of the copy image.
[B]
The outer drum screen consists of two tetron screens[C] that reduce
ink set-off.
The diameter of the left drum lock pin [D] and the right drum lock pin
[E] is different for each drum type as follows:
[D]
Color Drum
M: (B4 Size)
S: (A4 Size)
LG: (LG Size)
8-16
DIFFERENCES BETWEEN MODELS
Remarks
[A]
Left [D]
8φ
10φ
10φ
[C]
[E]
Right [E]
8φ
7.6f
7.6φ
SM