Lateral force for moving paper against a side guide.

[Al Ferrari]

It is very common for converting machinery such as a large format folder to use an angled belt with marbles riding on top to force paper against a side guide.

I am searching for instances in which the same effect of forcing paper against a side guide is achieved by having a row of angled wheels riding on top of the paper while it travels on a non angled conveyor belt.

Does anyone know of machines using this alternate method of side guiding paper on a conveyor?

Thanks,

Al Ferrari