Step 4A: First Transfer - Lexmark X925 Service Manual

Step 4a: First transfer

When the latent images are developed on each Photoconductor, the high-voltage power supply sends voltage to
the 1st Transfer Rollers inside the transfer belt unit.
The charge difference between the developed toner image on the Photoconductor surface and the 1st Transfer
Roller causes the images to transfer to the surface of the transfer belt for each color. This takes place by a direct
surface-to-surface contact between the Photoconductors and the transfer belt.
Photosensitive drum
Service tips
•
Never touch the surface of the transfer belt with your bare hand. The oil from your skin will cause a
charge differential on the surface, and toner will not stick properly. The result would be repeating
blotches of voids/light print on a page. Then the transfer belt will have to be replaced.
•
Don't use solvents or other cleaners to clean the transfer belt surface. No matter how careful you are,
the surface will be compromised, causing scratches or a charge differential that will produce a void or
light blotch on the printed page. Then the transfer belt will need to be replaced.
About +900v
Transfer
belt Transfer
roller
Toner
DS
Development roller
7541-03x
3-33
Diagnostic aids