Thank you for getting back to me
I tested with a sheet as well. The marks are seen slight less, but still there. I don't think these are unavoidable since the material on the back of these papers, Canson Baryta, is not like raw paper material, but soother/shinier, and easier to get scratches.
I asked the tech guy to take look the printer and the pressure of the lever was adjusted, less pressure, but now the images got blur.....slipping
I am wondering how I can manage this issue.