We guarantee that our toner cartridges will not infringe the terms of warranty of Oki, one of the leading manufacturers of printers and telecom solutions for business. The origins of the company date back to 1881 when the company manufactured the first telephone set in Japan. Over the next 130 years it extended its range on mechatronics and printing machines. Today it supplies monochrome and color impactless printers, dot matrix printers, Nmulti-function devices and fax machines. The company is based in Tokyo but has offices in more than 120 countries worldwide. Based on its philosophy, the purpose of the company is to contribute to the welfare of humanity with technologies while caring about the environment. Note that Oki pioneered the use of LEDs in printers and created the first A3 color printer.