Photoconductor Units (Pcu) - Ricoh D014 Service Manual

Photoconductor Units (PCU)

6.6 PHOTOCONDUCTOR UNITS (PCU)
6.6.1 OVERVIEW
1. Development Unit (Y)
2. Drum (Y)
3. Development Unit (C)
4. Drum (C)
5. Development Unit (M)
6. Drum (M)
Four PCU units (Y, C, M, K) are arranged in tandem from left to right. There is one PCU for
each color. Each PCU consists of a development unit and drum unit pair (1)(2), (3)(4),
(5)(6), (7)(8). The image that is developed on each drum transfers to the image transfer
belt (9). Each color transfers onto the image transfer belt, one after the other (Y,C,M,K)
during one pass of the ITB under the PCUs.
The Y, C, and M PCUs all use a charge roller, for example (10) in the M_PCU, to
charge the drum surface.
The K_PCU, however, uses a charge corona unit to charge its drum.
D014/D015/D078/D079
CÓPIA NÃO CONTROLADA
7. Development Unit (K)
8. Drum (K)
9. Image Transfer Belt (ITB)
10. Charge Roller
11. Charge Corona Unit
6-18
CÓPIA NÃO CONTROLADA
SM