To be used with: Crystaljet 3000,4000,4000 II, 6000II, 9000series large format printer, which are produced after January 5, 2011 by INFINITI / CHALLENGER. ZHONGYE ZY-6800,ZY-5300,ZY-3400,ZY-3200,ZY-2500,ZY-2000,ZY-FB Series large format printers with Seiko spt510/35PL Remarks: Original Description: This is latest type SPT510-35PL print head with new IC driver chip produced by Seiko. Both new and old IC driver chips perform the same