Hewlett-Packard 3700 Manual

A SERVICE OF

next previous

A positive DC bias is applied to the pressure roller to enhance the power to hold the toner on

paper and prevent the toner from being attracted to the fuser sleeve (offset).

Figure 5-35.

Fusing

Cleaning block

This block consists of two steps and clears the residual toner from the ITB, photosensitive

drum, and the primary charging roller.

During the transfer step, not all toner is transferred from the ITB and the drums onto the

paper but some remains on top of them. This remaining toner is called residual toner (waste

toner). In this block, residual toner is cleared from the ITB and photosensitive drums to keep

a clear image in the following prints.

Step 8: ITB cleaning

The residual toner on the ITB is scraped away with a cleaning blade and falls into the

cleaner cover. The residual toner in the cleaner cover is collected in the waste toner

container adjacent to the ITB afterwards.

Figure 5-36.

ITB cleaning

Step 9: Drum cleaning

ENWW Image formation system 155