Digital BW, The Print

I have an Epson Color Stylus 740, which does a nice job, although it 
is definitely an older, slower model. 

I have tried to remove the subtle banding that only apparent in large 
areas of similar light tones - by using the Epson driver function 
that lets you clean the nozzles. When one try didn't work, I tried it 
a few times in successsion. The result was ink on the rollers. 

I also tried changing the setting that controls how tightly the paper 
is run through the rollers. That does not have a noticeable effect.

I am using Epson Glossy Photo paper.

For a printer of this type, are there any other options ? Are newer 
printers less susceptable to banding ? 

Any insights would be most welcome.

- Ken Lee