Japan-based Toppan also pumped in 3.5m last May when it agreed to work with E Ink on the development of a coloured electronic ink solution using colour filter arrays.
Under the terms of the partnership, Toppan will manufacture front plate laminate products for E Inks graphical display business using the companys electronic ink.
The deal will expand the partnership in several areas, including e-publishing and e-paper applications.
E Ink president and chief executive Jim Iuliano said the partnership was "an extraordinary opportunity" for his firm.
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