Brother HL-1260 User Manual

Page 22

II -

3. Transfer stage

Step 4 Transfer (+)

Step 5 Separation

4. Fixing stage

Step 6 Fixing

5. Drum cleaning stage

Step 7 Drum cleaning

Electrostatic latent image

formation stage

Transfer stage

Fixing stage

Drum cleaning stage

Developing stage

Paper path

Direction of drum rotation

2. Scanning exposure

1. Primary charge

7. Drum cleaning

Print delivery

6. Fixing

5. Separa-
tion

4. Transfer

Registration

Multi-purpose tray feed

Cassette feed

3. Develop
ment

Figure 2.7

3.2.1

Electrostatic latent image formation stage

This stage has two steps, which together produce a pattern of electrical charges on the
photosensitive drum.

At the end of the stage, negative charges remain in the unexposed ”dark” area. Charges are
absent from the ”light” areas, where the laser beam struck (exposed) the drum surface.

Since this image of negative charges on the drum is invisible to the eye, it is called an
”electrostatic latent image”.

Time (t)

-100

Exposed

area

Unexposed

area

Primary
charge
(step 1)

Scanning
exposure
(step 2)

Primary
charge
(step 1)

Transfer
(step 4)

Surface potential (V)

-500

Figure 2.8