We have a co. using software that wants our driver to not store blanks. any work around?

The only way to prevent the TWAIN driver from storing blanks is to refrain from scanning blank pages. In other words, they'll have to scan in single sided originals or set up a batch scanning job to scan duplexed originals separate from single sided. Unfortunately, there is nothing in the TWAIN driver that looks at the scanned image to see if it's blank.