ADF capacity A4 or Letter size: max. 20 sheets (20 lb/75 g /m2 paper), up to 0.08 inch/2 mmin heightLegal size: max. 5 sheets (20 lb/75 g /m2 paper), up to 0.02 inch/0.5 mm inheightCopy SpecificationsMultiple copy max. 99 pagesIntensity adjustment 9 positions, Auto intensity (AE copy)Reduction / Enlargement 25 % - 400 % (1 % unit)Scan SpecificationsScanner driver Windows: TWAIN 1.9 Specification, WIAMac OS: ICAMaximum scanning size Platen Glass: A4/Letter, 8.5" x 11.7"/216 x 297 mmADF: A4/Letter/Legal, 8.5" x 14.0"/216 x 356 mmScanning resolution Optical resolution (horizontal x vertical) max: 600 x 1200 dpi *1Interpolated resolution max: 19200 x 19200 dpi *2*1 Optical Resolution represents the maximum sampling rate based on ISO14473.*2 Increasing the scanning resolution will limit the maximum possible scanningarea.Gradation (Input / Output) Gray: 16 bit/8 bitColor: 48 bit/24 bit (RGB each 16 bit/8 bit)Fax SpecificationsApplicable line Public Switched Telephone Network (PSTN)Communication mode Super G3, G3Data compressing system Black: MH, MR, MMRColor: JPEGModem speed max. 33.6 kbps(Automatic fallback)Transmission speed Black: Approx. 3 seconds/page at 33.6 kbps(Based on ITU-T No.1 chart for US specifications and Canon FAX Standardchart No.1 for others, both in standard mode.)Color: Approx. 1 minute/page at 33.6 kbps(Based on Canon COLOR FAX TEST SHEET.)Gradation Black: 256 levelsColor: 24 bit Full Color (RGB each 8 bit)275