Page has gray or speckled background.
Reason:
Static electricity causes toner to stick to background.
Solution:
Change paper to an acceptable laser bond and use a humidifier.
Horizontal bands of darker print at regular intervals down the page.
Reason:
Image drum has been exposed to light.
Solution:
Leave the printer turned off for about two hours. If this fails to restore it, install a new image drum cartridge.
