Print Technology : Monochrome Laser Print Resolution, Black : 1200 Image Quality 1200 x 1200 dpi 2400 Image Quality 600 x 600 dpi Print Speed ( Letter, Black) : Up to 30 ppm Print Speed ( A4, Black) : Up to 28 ppm Print Speed ( Letter, Black) Duplex: Up to 15 spm Print Speed ( A4, Black) Duplex: Up to15 spm Time to First Page ( Black) As fast as : 7.5 seconds Processor : 266 MHz