FAQ: How Can I Check For, or Enable Duplex Scanning in DotTwain?


To check if a scanner is duplex (or double-sidded) enabled, the duplex property (of Atalasoft.Twain.Device) can be checked to tell you what is supported by the device.

  • none: duplex scanning is not supported
  • one-pass: duplex is supported, both sides are scanned in one pass
  • two-pass: duplex is supported, each side is scanned one at a time

In contrast, the DuplexEnabled property must be set to true to enable the duplex scanning feature. To turn duplex scanning off, just set it to false.

Original Article:
Q10108 - FAQ: How can I check for or enable duplex scanning?