Ricoh B156 Service Manual page 381

1. Drum Charge
The corona wire gives the drum a negative charge.
2. Black (K) Image Creation
a) Laser Exposure
The laser diode (LD) emits two laser beams. The laser beams create a latent
image on the OPC surface.
b) Development
The development roller transfers negatively charged toner to the latent
image. The OPC belt surface holds only one toner color at one time.
c) Image Transfer
The OPC belt transfers the single-color toner image to the image transfer
belt.
d) Cleaning
The OPC belt cleaning unit cleans the image transfer belt.
3. Magenta (M) Image Creation
Same as 2 a) through 2 d) above.
4. Cyan (C) Image Creation
Same as 2 a) through 2 d) above.
5. Yellow (Y) Image Creation
Same as 2 a) through 2 d) above.
6. Paper Transfer
The paper transfer roller transfers the combined CMYK toner image to the
paper.
The OPC belt and the image transfer belt can hold two A4-size LEF images on
their surfaces. When printing on A4 LEF or smaller paper, the OPC and image
transfer belts process two images in one cycle. At this time, two sheets of
paper are consecutively output with little interval between them. This speeds up
color print output.
7. Separation
The paper is separated from the image transfer belt when the belt curves away
from it. A discharge plate assists this process.
8. Fusing
The fusing unit fuses the image to the paper.
9. Cleaning
The image transfer belt cleaning unit cleans the belt.
10. Quenching
The quenching lamp erases any remaining charge on the OPC belt.
SM
CÓPIA NÃO CONTROLADA
6-15
CÓPIA NÃO CONTROLADA
COPY PROCESS
B156/B200