HP color laserjet 1600 series Service Manual
The principal process of image formation is described here. The print process can be broadly divided
into 5 stages with 7 steps. A toner image is formed on paper as it goes through each process. The
following figure illustrates the stages and steps of the print process as follows.
into 5 stages with 7 steps. A toner image is formed on paper as it goes through each process. The
following figure illustrates the stages and steps of the print process as follows.
1.
Electrostatic latent image formation stage
Forms an electrostatic latent image on the photosensitive drum.
Step 1: Primary charging
Step 2: Laser beam exposure
2.
Developing stage
Makes the electrostatic latent image on the photosensitive drum surface visible by applying toner.
Step 3: Development
3.
Transfer stage
Transfers a toner image on the photosensitive drum onto paper.
Step 4: Transfer
Step 5: Separation
4.
Fuser stage
Fuses the toner image on paper.
Step 6: Fuser
5.
ETB cleaning stage
Cleans the residual toner on the photosensitive drum.
Step 7: ETB cleaning
Latent image formation
This stage consists of two steps and forms an electrostatic latent image on the photosensitive drum.
When the last step in this stage is completed, a negative electrical charge remains in the unexposed
drum surface area by the laser beam and is removed from the exposed area. The image with
negative charge on the drum is called an “electrostatic latent image” as it is invisible to human eyes.
drum surface area by the laser beam and is removed from the exposed area. The image with
negative charge on the drum is called an “electrostatic latent image” as it is invisible to human eyes.
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Chapter 4 Operational theory
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