Print Engine Theory of Operation
Phaser® 6120 Color Laser Printer Service Manual
7-16
Drive
Key Name Function/System
[1] Main Motor (M1) ■ Drives the Photo Conductor.
■ Driven by the PWB-A (Engine Control Board).
■ Brushless DC Motor.
[2] Developing Motor
(M3)
■ Drives the Developing Roller.
■ Stepper motor.
[3] Hopper ■ Loaded with toner that is conveyed onto the Developing Unit by way of
the Conveyance Pipe.
[4] Supply Roller Supplies toner fed off from the Hopper to the Developing Roller.
[5] Developing Roller
■ Supplies toner fed by the Supply Roller to the surface of the Photo
Conductor.
■ Conveys toner to the surface of the Photo Conductor through voltage
potential difference.
■ The developing bias voltage is applied to this roller.
■ Single component developing system.
[6] Regulator Blade/2nd ■ Regulates the height of toner on the surface of the Developing Roller.
■ The blade bias voltage is applied to the blade.[7] Regulator Blade/1st
[8] Agitating Blade Agitates toner in the Hopper.
[9] Photo Conductor
■ The drum surface on which an image of each color of toner is formed
for subsequent transfer of the image to the Transfer Belt.
■ OPC drum.
[10] Cleaning Blade Scrapes residual toner off the surface of the Photo Conductor.
[11] Waste Toner Agitating
Screw
Evens out waste toner scraped off by the Cleaning Blade and that
scraped off by the Cleaning Blade of the Image Transfer Belt so that the
waste toner can be stored evenly.
[12] Charge Corona
■ Deposits a charge to the surface of the Photo Conductor.
■ Imaging Unit comb electrode Scorotron system.
[1] Photo Conductor [3] Developing Motor (M3)
[2] Main Motor (M1) [4] Developing Roller
4139to2014c1
[1]
[2]
[4]
[3]