The machine is a cartridge type, in which the core of its image formation components are constructed as a signal entity: photosensitive drum, primary charging

roller, developing cylinder, cleaning blade, and toner housing.

The DC controller PCB has a built-in high-voltage output assembly, and generates high voltage for charging at such times as necessary.

This machine is provided with a humidity sensor to attain charging suitable for the environment.

The DC controller PCB monitors the humidity sensor status during standby to output the appropriate charging AC voltage.

Static

eliminator

Transfer charging

roller

MEMO:

1.The cartridge of this machine can be used to copy about 4,500 sheets (A4, ptint rate of 5%).

2.The number of prints that may be made after the first indication of the message "< TONER LOW/ PREPARE NEW TONER>" is about 530 sheets (A4, ptint rate

of 5%).

7-2

Cleaning blade

Primary

charging roller

Drum

Developing cylinder

Humidity sensor

F-7-1

DC controller PCB

J502

Cartridge