Unbelievable Problem With Canon IP2500!!!!

[JonVic]

Hey guys i have just bought a Canon IP2500. The printer makes great pictures and it looks lovely. However i have just put some photopaper in and when i have printed a photograph whenever i hold it up to the light i can see about 6-8 lines that the printer has made on the paper. I guess it is some sort of metal cog that grips the paper inside the printer to push it out when the paper has been printed on but it makes loads of dotted lines that are sort of pushed into the paper.
This totally sucks when you are trying to print a high quality picture on photopaper. I cannot believe that a company like Canon has not tested this printer with photopaper but it seems the printer actually damages the photopaper as it comes out with this problem, anyone know if there is a way to stop this otherwise this printer is going back because this is an unacceptable fault.

[Nehmo]

What do the lines look like? I doubt there's a cog wheel in the printer that's doing this. Try deep cleaning the heads.