I have not seen this problem reported elsewhere, but the latest packs of HPR I purchased have embedded dark fibres running in bands across many of the sheets. Has anyone else seen this?
Before coating, the fibers are only visible when the sheet is held up to a strong light but they are clearly visible as dark fibers after coating (with Pt/Pd). After printing, the area around the fibers are lighter than the surround where the coating has, presumably, not taken evenly.
I have sent samples to Hahnemuhle for investigation. The batch number of my paper is X203381.