Use the HP Scan Extended app to scan and check if that helps. Click here to download the app. Once it's downloaded and installed, go to Start > All Programs > HP > HP Scan Extended > Run "HP Scan Extended". Alternatively, you may download the full-featured driver from here. You may watch this video for a better understanding. The advantage of 200 DPI scans is that they take less storage space and scanning time. 300 DPI. A resolution of 300 DPI is perfect for professional document scanning, providing a clear, crisp image that's ideal for printing or viewing on high-resolution devices. Scanner Type: Sheet-fed, 1-pass, duplex color scannerSensor: Dual Color CISOptical Resolution: 600 dpiMaximum Resolution: 1200 dpiColor and Grayscale Scan Mode (Bit Depth): 30-bit internal/24-bit externalMonochrome Bit Depth: 1-bitConsumables: (pick up and separation roller each): 300,000 pagesOutput Resolution: 50 to 1200 dpiPaper Sizes: Minimum: 2" x 2"; Maximum: 12" x 220" at 200 dpi The scanners resolution is also by inch. So the scanner is capable of much more pixels than you can handle. Also Note for future reference the difference between say 150 dpi file output and 200 is big but the difference between 200 and 300 is not that big. 200 can work quite well and the difference between 250 and 300 is not much at all. Vay Nhanh Fast Money.

200 dpi vs 300 dpi scanning