Canon i-SENSYS MF-275dw A4 Wireless & Duplex MONO 4-In-One ( Print, Copy, Scan, Fax ) Printer - Black: General SpecificationsMachine TypeMonochrome laserAvailable FunctionsPrint, copy, scanPrint SpecificationsPrint SpeedSingle sided: Up to 29 ppm (A4)Double sided: Up to 18.5 ipm (A4)Printing MethodMonochrome laser beam printingPrint ResolutionUp to 2400 equivalent x 600 dpiWarm-up TimeApprox. 7.5 sec