Hello CjhGPM.
If you have not already resolved this issue, we suggest you search our online knowledgebase for this product: DocuMate 4790.
Alternatively, you can visit our Contact Us page for other support options.
We have a scanner that is putting a black border around the the back pages when we duplex scan. The front side of the page comes through just fine, but the back side of the page has the black border. We looked at the settings and the crop option is grayed out. Could anyone provide insight on how to get rid of the black border?