Light text and blurry graphics are seen on the scan/copy output. Depending on how severe the scan/copy quality issue is, it can be on the outer vertical edges, or on the whole page itself.
Note: The print output is fine, and this affects only either flatbed / front side ADF (FADF) scans, or back side ADF (BADF) scans. It is possible, but unlikely to affect both flatbed and ADF scans.
Click the link below to view sample Print Quality test pages.