Ricoh PRIPORT VT 2000 Series Service Manual page 168

No. Item
18 Drum Unit
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
VT2000-M: (B4 Size)
VT2000-S: (A4 Size)
VT2000-LG: (LG Size)
Remarks
2-141
28 February '91
[A]
[C]
Left [D] Right [E]
8φ
10φ 7.6φ
10φ 7.6φ
[E]
8φ