Version 7.0

• New hierarchy of classes.
• .NET 4.0 supported.
• Native 64-bit mode supported.
• SDK was successfully tested with Kofax VRS 4.5.
• New processing functions added: invert, change brightness, change contrast.
• Memory usage has been optimized.
• Added support for compression in Memory transfer mode.
• Ability to use scanners from console applications added.
• Created new detailed SDK documentation with upgrading guide from version 6.0 to 7.0.
• Created new Demos: TWAIN Simple Demo, TWAIN Advanced Demo, TWAIN Custom UI Demo, TWAIN File Transfer Demo, TWAIN Console Demo, Web TWAIN Demo.
• Some major and minor fixes.

Version 6.0

• Acquired images can be saved to PDF/A document.
• Acquired images can be saved to TIFF or PDF files using ZIP compression.
• Image acquisition algorithm has been optimized.
• Memory usage has been optimized.
• Some minor fixes.

Version 5.1

• Added ability to swap images in the internal images buffer.
• Fixed bug in CCITT compression algorithm of PDF encoder.
• Some minor fixes.

Version 5.0

• Library is compatible with TWAIN 2.0 now.
• Added ability to detect if TWAIN is installed in the system.
• Added ability to specify path to TWAIN Data Source Manager. This feature allows to use library in Citrix systems.
• Added ability to detect if scanner has flatbed.
• Function which work with device capabilites have been optimized.
• Image processing functions have been optimized.
• Some major and minor fixes.
• Examples have been updated.

Version 4.4

• Opportunity to save/load current settings of device has been added.
• Opportunity to create predefined session setups for mid- and high-volume scanners has been added.
• Memory leak in the GetImage/GetCurrentImage method has been fixed.
• DuplexEnabled property has been optimized for compatibility with Epson GT 2500 scanner.

Version 4.3

• Image can be added to multipage TIFF file or PDF document stored in the stream now.
• Two new methods (GetImageLayout and SetImageLayout) allows to get/set the layout of scanning image in JavaScript more easily.
• Exceptions during image processing can be disabled now.
• Examples have been updated.

Version 4.2

• Extended image information (barcode info, patch code info, ...) can be retrieved from the scanner.
• Documentation in Visual Studio .NET 2005 format has been created.
• PDF tags (author, title, subject, creator, producer, keywords, creation and modification date) can be added to PDF document.
• Now you can create log-file and send it to our support team if scanner does not work properly.
• Library has been optimized for compatibility with Fujitsu scanners with automatic border detection featur.
• Despeckle and border detection algorithms have been optimized.
• Examples have been updated.

Version 4.0

• Acquired image can be saved to a new PDF document compatible with version 1.4 of PDF standard.
• Acquired image can be added to existing PDF document compatible with version 1.4 or earlier of PDF standard.
• Exception mechanism has been added - all properties and methods throw exceptions (TwainException, ImagingException, PdfException) if error occurs. Previous versions of library did not throw exceptions.
• Despeckle algorithm has been updated.
• Examples have been updated.
• Other minor fixes.

Version 3.1

• Acquisition algorithm has been optimized for compatibility with HP and Fujitsu scanners.
• Opportunity to use any authentication schemes (such as basic, digest, NTLM, and Kerberos authentication) at image uploading has been added.
• Redirection functionality has been added to image uploading algorithm.

Version 3.0

• Two new classes allow to upload several acquired images per session to HTTP, HTTPS or FTP server.
• New documentation in MSDN format has been created. XML documentation file has been created.
• Examples for MS Visual Studio .NET 2005 and Borland Developer Studio 2006 have been added.
• Examples for MS Visual Studio .NET 2003 and Borland Developer Studio 2003 have been updated.
• The PostScan event has been deleted, two new events (ImageAcquired and ScanCompleted) have been added.
• Image's rotation function (RotateImage method) has been added.
• New properties (DeviceOnline, ShowIndicators, JobControl, CapValueType) have been added.
• The Rotation and NoiseLevelInBlankImage properties have been deleted.
• All properties begin with the upper letter now. C# code which uses library must be updated.

Version 2.1.5

• Image uploading process has been modified for compatibility with IIS 6 and 7 servers.
• Bug in scanning process from separate thread has been fixed.

Version 2.1.1

• Ability to set a cookie in image uploading session has been added. This can be useful if you must authenticate with the Lotus Domino server.
• Bug in work with ADF of Canon MF5530/5550 has been fixed.

Version 2.1

• Functions for image processing have been optimized and accelerated.
• Library now allows to create a custom progress indicator of image scan.
• Algorithm of scanning process has been updated for compatibility with Fujitsu scanners.
• Examples have been updated.

Version 2.0

• Functionality for detecting correct position of image (deskew functionality) has been added.
• Image processing functions (despeckle, border detection, blank page detection) have been optimized.
• Version of library which is compiled under .NET Framework 2.0 is available now.