Digital Imaging for document storage

[runningincircles]

I purchased a HP 9100c digital sender to store our records, but after configuring the device it doesn't perform as anticipated. I'm now looking for another solution and would love any imput to solution you have used. It needs to have the following capabilities:

Color
minimum 50 pages at a time
downloads to pdf format via network or internal network drive
Legal would be wonderful but not a deal breaker