Detailed Descriptions; Overview; Machine Layout - Ricoh Aficio 480W Dolphin-C2 Service Manual

28 April 2005

6. DETAILED DESCRIPTIONS

6.1 OVERVIEW

6.1.1 MACHINE LAYOUT

1
8
7
1 Image Writing Unit
2 Scanner Unit
3 Cleaning Unit
4 Fusing Unit
5 OPC Drum and
Surrounding Units
6 Roll Trays (2nd Tray
optional)
7
By-pass Tray
8
Development Unit
2
Uses an LPH (LED Print Head) capable of 32-level gradation to write
2-bit image data.
Uses a CIS for 256-level scanning. To minimize black lines caused
by dust or other particles, the original is scanned from above.
The drum is cleaned with a counter blade.
Fusing is done using a hot roller containing two halogen lamps. For
the given paper type/size selected by the user, the machine chooses
the most suitable fusing temperature and nip band width.
The units located around the OPC drum do the charging, image
writing, development, transfer, separation, cleaning, and quenching.
Paper is supplied from continuous rolls.
The by-pass tray can be used to feed individual sheets of copy
paper.
Toner is attracted from a single magnetic roller to the low charge
areas on the OPC drum. The ID sensor inside the unit is used to
control the toner concentration.
6-1
OVERVIEW
3
4
5
6
B188D903.WMFF