But, if i look better at your attached image, it is possible to be comming from the IBT assy (some debris inside the IBT, or pinched belt), something like that Alle had in PH7500.
1,9" ( 50mm ) it comes from the developer roller, part of xerographic module, depends on which color is present the defect.
Thank you for using the Support Forum. Yes it could be the transfer roller. Please follow the solution(s) for lines / spots. If this solution does not help please consider contacting your support centre for further assistance.
We are getting these defect lines that repeat every 1.9" from a Xerox WorkCentre 6605DN. The closest repeating defect in the support documentation is the Transfer Roller at 2.2". Are these lines from the transfer roller, or is it something else?