Imagio Neo C455, released in January 2005 in Japan, achieves superior image quality by using a newly developed set of full color chemical toners and several new process technologies. The new toner is under 6um in diameter. Moreover, it consists of polyester resin and it enables the lower temperature fusing system without fusing oil. Also, it uses the improved development technology with narrow gap using DC bias and a small size carrier.
Masumi Sato, Akira Azami, Takamasa Ozeki, Tomio Kondoh, Akihiro Kotsugai, Fumihiro Sasaki, "Fine Image Quality by Using Small Size Full Color Chemical Toner and New Process Technologies" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP21), 2005, pp 574 - 577, https://doi.org/10.2352/ISSN.2169-4451.2005.21.1.art00062_2