HP OFFICEJET PRO 9123 ALL-IN-ONEPRINTER. FUNCTIONS: PRINT, COPY, SCAN, FAX. PRINT TECHNOLOGY: HP THERMAL INKJET. PRINT SPEED: BLACK (A4, ISO): UP TO 22 PPM; COLOUR (A4, ISO): UP TO 18 PPM; DRAFT BLACK (A4): UP TO 32PPM; DRAFT COLOUR (A4): UP TO 32 PPM. PRINT RESOLUTION: BLACK (BEST): 1200 X 1200 RENDERED DPI; COLOUR (BEST): UP TO 4800 X 1200 OPTIMIZED DPION HP ADVANCE PHOTO PAPER 1200 X 1200 DPI INPUT. MONTHLY DUTY CYCLE: UP TO 25,000 A4; RECOMMENDED MONTHLY PAGE VOLUME: UP TO 1500.