09-23-2020 04:41 PM. Product: M479fdw. Operating System: Microsoft Windows 10 (64-bit) The May 2020 spec sheet says "Scanner type: Flatbed, ADF; Optical scan resolution: Up to 1200 x 1200 dpi". My M475 said the same thing but while the flatbed scanner offered up to 1200 DPI, the ADF only offered up to 300 DPI. Reportedly the M477 did the same. So which print resolution is best for you? It depends on what you are printing; different industries may hold different standards for print quality. For barcodes, the difference between a 203 or 300 DPI print-out is minimal. 203 DPI is suitable if the size of the barcode is detailed enough to be reliably decoded by the intended scanner. DPI or dots per inch is a unit of precision commonly used to define the resolution of a scanner, 300 X 300 Pixels: 18.45 DPI: 213 X 213 Pixels: 13.1 DPI: 240 X The DPI (dots per inches) is a measure of the number of pixels the scanner will associate to one inch of document. The more, the higher the quality. The number of points depends on the phone's camera resolution and on how much you crop the scan. The inches depend on the physical size of the document (eg. is the document a Letter page, a receipt .

200 dpi vs 300 dpi scanning