HP 2300d Service Manual - Page 92
Electrostatic latent-image-formation block, Step 1: primary charging, Step 2: laser-beam exposure
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Electrostatic latent-image-formation block Step 1: primary charging A dc bias is applied to the primary charging roller, which transfers a uniform negative potential to the photosensitive drum. Figure 20. Step 1: primary charging Step 2: laser-beam exposure The laser beam scans the photosensitive drum to neutralize negative charges on parts of the drum. An electrostatic latent image is formed on the drum where negative charges were neutralized. Figure 21. Step 2: laser-beam exposure 90 Theory of operation ENWW
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90
Theory of operation
ENWW
Electrostatic latent-image-formation block
Step 1: primary charging
A dc bias is applied to the primary charging roller, which transfers a uniform negative potential to
the photosensitive drum.
Figure 20.
Step 1: primary charging
Step 2: laser-beam exposure
The laser beam scans the photosensitive drum to neutralize negative charges on parts of the
drum. An electrostatic latent image is formed on the drum where negative charges were
neutralized.
Figure 21.
Step 2: laser-beam exposure