Basic Printing Principle - Brother HL-3040CN Service Manual

3.5

Basic Printing Principle

The printing process consists broadly of 6 processes: Charging, Exposure, Development,
Transfer, Fusing and Cleaning.
<Printing process>
(1) Charging: The surface of the drum is electrically charged (Primary Charge).
(2) Exposure: A printed image is formed on the surface of the drum by applying LED beam
(Electrostatic Latent Image).
(3) Development: Toner is adhered to the surface of the drum (Visible Image).
(4) Transfer: The toner on the surface of the exposure drum is transferred to the paper.
(5) Fusing: The transferred toner is fused on to the paper.
(6) Cleaning: Toner remaining on the exposure drum and belt unit is removed for recovery.
After these processes, the image is printed on the paper.
Charging
Exposure Development Transfer
K Y M C
Fusing
Cleaning
Fig. 2-15
2-17
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