Toshiba 4511, 3511 manual Recovery blade Drum rotation

• Cleaning

The edge of the conductive blade is pressed against the photoconductive drum surface to scrape off residual toner. The toner removed is then caught by the recovery blade.

Recovery blade

Drum rotation

3

(10) Discharging process

Discharging is a process of eliminating the (–) charge remaining on the photoconductive drum before the next charging process.

If the charge remaining on the photoconductive drum is not eliminated, the following phenomenon would occur:

(–)charge remaining on the photoconductive drum surface causes uneven application of the charge for the next copying.

Conductive blade

Fig. 3-317

→

The next copy obtains a double image. (The preceding image remains.)

To prevent this :

The entire surface of the photoconductive drum is flooded with light by the discharge LED array.

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The photoconductive drum becomes electrically conductive.

→

All of the (–) charge remaining on the photoconductive drum is conducted away to ground (However, (+) charge is eliminated by the conductive blade as mentioned in (8)).

→

Preparation for the next copying process is completed.

Photoconductive drum

Discharge LED array

Fig. 3-318

November 2003 © TOSHIBA TEC 3 - 9 e-STUDIO3511/4511 COPY PROCESS