HP LaserJet Pro P1560 HP LaserJet Professional P1560 and P1600 Series Printer - Page 46
Developing stage, Print cartridge,
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Developing stage Print cartridge Step 3: In the print cartridge, the developing cylinder transfers toner onto the electrostatic latent image on the photosensitive drum. Figure 1-19 Print cartridge Blade Developing cylinder Exposed area Unexposed area Photosensitive drum Unexposed area Exposed area AC bias DC bias Toner acquires a negative charge from the friction that occurs when the developing roller rotates against the developing blade. The developing bias is applied to the developing roller to make a potential difference between the developing roller and the photosensitive drum. The negatively charged toner is attracted to the latent image on the photosensitive drum because the drum surface has a higher potential. 28 Chapter 1 Theory of operation ENWW