Lsu (Exposure); Toner Cartridge (Development Section) - Xerox Phaser 6100 Service Manual

System Outline

5.1.2 LSU (Exposure)

The latent image is formed on the drum using an image data stream to switch the laser beam On or Off. Where no
image is required the beam is off, where toner is required the beam is turned on. When the laser is on and the beam
strikes the drum surface, the charge is reduced to -50 V, where the beam is switched off the charge on the drum
surface remains at -600 V.
Unexposed Exposed
-600V
-50V

5.1.3 Toner Cartridge (Development Section)

In the development stage, toner particles are transferred from the toner cartridge onto the surface of the drum. The
drum and the developer roller rotate in opposite directions. Toner on the developer roller is charged to the developing
voltage. (see, page 5-7). Toner is attracted to the drum in those areas where the surface charge is -50V. Toner is not
attracted to those areas of the surface carrying a -600 V charge.
Dev Roller
Developing
Voltage
1) Type
Developing method: Non-magnetic, Mono-component developing system.
Toner cartridge order: K, Y, M, C from top.
Developing sequence: Y, M, C, K
Life span: High Capacity Toner: 7,000 (K) / 5,000 (C, M, Y); Standard: 3000 (K) / 2000 (C,M,Y)
Power: DEVE motor (BLDC)
Power transmission: Electric clutch
Toner remaining: TRC (Toner Reproductive Curve) sensor, +Dot counting method
5-2
Unexposed
-600V
Polygon Motor
(30,000rpm)
Dev Gap
OPC
Drum
DEV. - Black DEV. - Black
DEV. - Yellow DEV. - Yellow
DEV. - Magenta DEV. - Magenta
DEV. - Cyan DEV. - Cyan
Reflecting Mirror
Drum Drum