Dynamic Web TWAIN: How can I acquire black-white images?

You can set the value of PixelType property to EnumDWT_PixelType.TWPT_BW.

Allowed Values PixelType
EnumDWT_PixelType.TWPT_BW (0) BW
EnumDWT_PixelType.TWPT_GRAY (1) GRAY
EnumDWT_PixelType.TWPT_RGB (2) RGB

JavaScript Sample:

function ScanImage(){
    DWObject.IfShowUI = False;
    DWObject.IfDisableSourceAfterAcquire = True
    DWObject.PixelType = 0;


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