EZTwain

None of the Kodak scanners implement CAP_FEEDERLOADED dynamically: These scanners do not have a paper sensor that can communicate to the host PC. (Possible exception - the Avision-sourced i50?) Except for a brief moment while the device is being closed, this capability always returns TRUE. Note: EZTwain's TWAIN_IsFeederLoaded function reads this capability.

Consequences: Your program cannot wait for the feeder to be loaded by polling this capability - CAP_FEEDERLOADED will always indicate that the feeder is loaded. You cannot loop until the feeder is empty by monitoring this capability, because there is no change when the feeder goes empty.

The scanner can tell when the feeder goes empty, it just doesn't report it through CAP_FEEDERLOADED. Normal multipage scanning logic per the TWAIN standard will work fine with these scanners - just scan until the TWAIN State drops below 6. As mentioned elsewhere, some Kodak models cannot scan single pages - once enabled, they scan everything in the feeder.

Kodak KDS TWAIN driver: If working at low-level, set CAP_FEEDERENABLED before setting CAP_XFERCOUNT.