You can scan several images without a GUI display. To do so

• Create a ScanManager object.
• Collect all scanners, that can scan without user interface.
• Set source setting multipleImagesEnabled = true.
• Call Scan method with suitable parameters.

The sample code in C#:

IScanManager scanManager = engineLoader.Engine.CreateScanManager();
FREngine.ScanSourceUITypeEnum UiType = ScanSourceUITypeEnum.SSUIT_All;
FREngine.ScanSourceApiTypeEnum ApiType = ScanSourceApiTypeEnum.SSAT_All;

IScanSources sources = scanManager.FindScanSources(UiType, ApiType);
IScanCallback callBack = new ScanningCallback();
 
//use Item( 0) if you have only one scanner
IScanSource source = sources.Item( 0 );
IScanSourceSettings settings = source.ScanSettings;
settings.MultipleImagesEnabled = true;

source.Scan(ScanSourceUITypeEnum.SSUIT_None, @"D:\scanned_images", callBack);