Transfer Stage Five - HP LaserJet II Serie Manual De Instrucciones

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HP 33440/HP 33449 COMBINED SERVICE MANUAL
TRANSFER: Stage Five
At the transfer station, the tiner image on the drum is transferred to the paper. A corona
assembly is positioned behind the paper so that the paper, which is traveling at the same speed the
drum's surface is rotating, contati the drum. This corona produces positive charges which collect
on the back of the paper. Because the positive charges on the paper are stronger, they pull the
negatively charged toner particles off the drum (see Figure 5-10).
As the paper and drum continue to advance, the small radius of the drum and the stiffness of the
paper cause the paper to natutily peel away from the drum (see Figure 5-11). Separation is dso
assisted by a high negative vol~e being apptied to a row of sharp meti teeth-the Stitic Charge
Eliminator. This Static Charge Eliminator weakens the attractive forces between the negatively
charged drum surface and positively charged paper. Without this assistance, thin papers could
conceivably wrap around the drum. From the transfer station, the paper moves to the fusing
station and the drum rotates back to the cleaning station to prepare it to receive the nefi section
of print.
Figure 5-10. Transfer of Toner Image
Figure 5-11. Paper
Separation
5-11