Ricoh UJF-3042 GEN4 Printhead Printer compatibility: Mimaki UJF-3042 This Ricoh GEN4, 384 channels, 30 kHz, 7 picoliter, greyscale printhead is suitable for Mimaki UJF-3042 printers. This printhead has an integrated heater and thermistor. This is Ricoh original printhead and it is covered by a manufacturer warranty. This printhead includes Mimaki Gen Damper Adaptor Assy. This printhead correspond to Mimaki part number M010010.