This site describes PDF/raster, a strict subset of the PDF file format, for storing and transporting multipage raster image documents, especially scanned documents. PDF/raster provides the portability of PDF while offering the core functionality of TIFF. Bitonal, grayscale and truecolor images are supported. Compression options include uncompressed, JPEG, and lossless CCITT Group 4 Fax.
View a presentation from Jon Harju, TWAIN Working Group Chair and Visioneer, Inc. CTO, about PDF/raster