D-Tone 5040K is developed by Andrew Yan, Technical Director of Hong Kong-based commercial printing house, WKT. Leveraging over 30 years of experience in many aspects of commercial printing, Yan, working closely in the field and together with in house colour experts, Michael and Patrick, went about optimising the process of the colour reproduction within the operational environment of WKT, arriving successfully at a true "Neutral Grey Balance" production with the D-Tone 5040K system.

By analysing and applying the scientific principles of colour reproduction theory, including the Munsell Colour System as well as the widely understood L*a*b* system, Yan came up with D-Tone 5040K, a system that effectively applies those principles in a systematic methodology to eliminate the many variables involved in commercial printing environments.

Yan, through his company, Dragon Tone Limited , holds the patent for the D-Tone 5040K system. Yan graduated from the Printing Technology Institute in Watford, UK. As part of his contribution to the industry, he was a lecturer at the Hong Kong Technical Institute in Printing Technology.



D-TONE 5040K Neutral Grey Balance Quality Control System