rate contract for printers and scanners , category-a: laser composit printer , item no . 1: mono chrome laser printer a-4 18 ppm , item no . 2: mono chrome laser printer a-4-18 ppm ( print , scan , copy ) , item no . 3: mono mfp laser printer 20ppm with wi-fi ( print , scan & copy ) , item no . 4: mono chrome single function laser printer , item no . 5: mono chrome single function a3 size laser printer , item no . 6: mono multifunction laser printer ( print , scan & copy ) , item no . 7: color laser printer a-4 -25 ppm ( mfp ) ( print , scan & copy ) , item no . 8: color laser printer a-4 -20 ppm ( mfp ) ( print , scan & copy ) , item no . 9: inkjet/ ink tank printer a-4 , 10-12 ppm , item no . 10: inkjet/ ink tank printer a-4 25 ppm , item no . 11: inkjet/ ink tank printer a-4-30 ppm and above , item no . 12: pagewide printer a-4-30 ppm and above , category-b: scanners , item no . 13: scanner 35ppm or higher , item no . 14: scanner 50ppm or higher , item no . 15: scanner 50ppm or higher a3 size , item no . 16: scanner 60ppm or higher , category-c printers with separate durm and tonners , item no . 17: mono chrome laser printer a-4 28 ppm or higher , item no . 18: mono chrome laser printer a-4-28 ppm or higher ( print , scan , copy ) , item no . 19: color laser printer a-4 -20ppm or higher , item no . 20: color laser printer a-4 -24 ppm or higher ( mfp ) ( print , scan & copy )