OKI Data Americas Introduces Four New Compact, High-Performance, and Affordable Printers to Its Expanding Label/POS Product Line MOUNT LAUREL, N.J., June 11, 2012 (GLOBE NEWSWIRE) -- OKI Data Americas announced today the introduction of the PT390 Series, PT330/PT331 and LD670 Label/POS printers to the company's broad and...