Printing Process - Ricoh G157 Service Manual

6.1.5 PRINTING PROCESS

Paper Exit Unit
Fusing Unit
Transfer Roller
Bias
1. OPC belt charge: The charge unit gives the OPC belt the negative charge.
2. Laser exposure: The optical housing unit emits the laser beam and makes
latent images on the OPC belt.
3. Development: The development units move the toner to the OPC belt and
makes toner images.
4. Belt transfer: The OPC belt moves toner images to the transfer belt.
1) After belt transfer, the erase lamp quenches the OPC belt.
2) After quenching, the OPC belt-cleaning blade removes remaining toner from
the OPC belt. Then it moves removed toner to the waste-toner collection unit.
3) The waste-toner collection unit moves waste toner to the waste toner bottle.
5. Paper feed: The paper feed roller sends the paper from the paper tray to the
registration roller.
6. Paper registration: The registration roller keeps the paper and moves it to the
paper transfer roller.
SM
CÓPIA NÃO CONTROLADA
Bias
Cleaning Unit
Transfer Unit
Drum
Ground
Registration Roller
Erase
Lamp
Paper Feed
Unit
Paper Tray
6-7
CÓPIA NÃO CONTROLADA
OPC Belt Unit
Development Unit
OPC Belt
Roller
Cleaning
Optics Unit
Unit
Bias
Brush
Bias
OPC
Charge
OVERVIEW
Bias
Bias
G157D905.WMFF
G157