Its a 3wks old IP4000...and i've stained 4x 4Rprints in the same manner (consistent marks). My previous A4 prints on Photo Paper Plus Glossy and the corresponding 4R sample pack (5pcs) all gave great prints (no stains) earlier this month. After not using for just over 1 wk, i bought the cheaper Glossy Photo paper 4R pack to try and this is what i got.
Can I resolve this or do i really need to bring this down to canon...