This is the craziest copy quality problem I've ever experienced. The copier is a KM-4035.
The exact same "tire tread / wave" background pattern appears in the EXACT same size and pattern regardless of paper size. I printed several internal print reports from the copier on letter, legal, and ledger paper and the pattern is the exact same size. Its _always_ on the lead edge of the paper. Whenever I print 5 pages, the first page is always the worst, and pages 2-5 still have the same ugly background at the beginning of the print.
I have replaced the fuser rollers, charge wire assembly, transfer roller, developer unit, and tested three different drums. All show the exact same problem.
What really confuses me is that if i print 3 letter, 3 letter-R, 3 legal, 3 ledger, i can stack the pages ontop of each other and the problem is always the exact same size and pattern on the first 5 inches of the pages then clears up a lot less noticeable after that.
Attachment 1747
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