A4 Duplex Sheet-fed Document Scanner. Scanning speed of up to 35 ppm / 70 ipm. Automatic Document Feeder (ADF) of up to 50 sheets. Daily duty cycle of 4,000 pages. One-pass duplex scanning. Paper protection function and image sensor glass dirt detection Scanner Type: A4 sheet-fed, one-pass duplex colour scanner Sensor Type: Colour Contact Image Sensor Scanning Method: Fixed carriage and moving document Light Source: RGB LED Optical Resolution: 600 x 600 dpi Output Resolution: 50 - 1,200 dpi (1 dpi increments) Bit Depth: Each colour (RGB): 10 bit input / 8 bit output Min Document Size: 50.8 x 50.8 mm Max Document Size: 215.9 x 6096 mm Supported Paper Weight: 27 - 413 g/m2 (A8 or less 127 - 413 g/m2) Output File Formats: Epson Scan 2: JPEG, TIFF, Multi-TIFF, PDF, Searchable PDF, BMP, PNG Document Capture Pro (Win): JPEG, BMP, PDF, Searchable PDF, TIFF, Multi-TIFF, PNG, DOCX, XLSX, PPTX ADF Capacity: 50 sheets (80g/m2) Daily Scan Volume: Up to 4,000 pages / day Multi-feed Detection: Ultrasonic Sensor and Length Detection Scan Speed: Resolution (Colour/Greyscale/Mono): 200 dpi: 35 ppm / 70 ipm*2 300 dpi: 35 ppm / 70 ipm*2 600 dpi: 12 ppm / 24 ipm*2