also, since you have corel draw you should have corel paint incorporated .. select edit bitmap.. there you can see if the blue may be transparent there will be flashing lines around the area and you may see directly through the image which may cause it not to print.
also, try clicking on adjust > image adjustment lab another window will pop
take the ink dropper (two on the right hand side) take the white one and drag it over the blue images.. and see what colors they are reading.
if they are reading at 100% white this may be why or if they aren't reading at all they may be transparent..
I hope this helps