Frank E. Blokland is type designer (of among other typefaces, DTL Documenta and DTL Haarlemmer), Senior Lecturer in type design at the Royal Academy of Arts (KABK) in The Hague since 1987, and Professor and Research Fellow at the Plantin Institute of Typography, Antwerp, since 1995. Blokland founded the Dutch Type Library in 1990 and a couple of years later he initiated and supervised the development of DTL FontMaster, a set of professional font tools developed together with the Hamburg-based company URW++. October 2016 he successfully defended his PhD dissertation at Leiden University, which was the outcome of a research conducted in order to test the hypothesis that Gutenberg and consorts developed a standardized and even unitized system for the production of textura type, and that this system was extrapolated for the production of roman type in Renaissance Italy.
Jürgen Willrodt studied Physics and Mathematics and got a PhD in theoretical particle physics in 1976. He joined URW Software & Type GmbH in 1983 as software developer. His ﬁrst major development project was the porting of the IKARUS font production system from DEC to Sun Unix. He has been the main developer of the IKARUS system since 1985, developing interpolation, auto-tracing, and hinting algorithms, as well as special algorithms for Kanji separation. At URW++ Jürgen is responsible for the font production and the font-tools development, which includes FoundryMaster and DTL OTMaster.