Image Quality Issue
If you have an image quality issue on your print outs consider your toner cartridge as the most likely cause. Image quality issues are lines from one side of the page to the other, repetitive marks or repeated image issues (ghosting). The majority of image quality issues are due to the toner cartridge. The easiest method to resolve this issue would be to swap your toner and then print 10 blank pages. If the image quality issue goes away you just fixed the issue.