ROHM has completed development of the NE3002-WA30A (2" model) and NE3004-WA30A (4" model) thin-film thermal printheads, which feature an original ultra hard protection film and proprietary Step-Free structure (eliminates step between the heat element and electrode), resulting in increased energy efficiency, reduced scratching and improved anti-corrosion capabilities. These features enable clearer image quality and higher reliability even during continuous printing at high speeds (300mm/s at 300dpi). If used with a history control, 500mm/s at 300dpi is possible. In addition, the operating life is greatly increased (150km or 1 ½ times that of conventional products) and the unique near-edge structure allows for uniform, accurate printing, even on thick media.