Dry Toner or Inkjet?

From a website on green printing:

Environmental issues have become key initiatives for print manufacturers, with increasing demand for eco-friendly technologies not only from environmental groups but also progressively more government mandates. Reducing Volatile Organic Compound (VOC) emissions to meet new environmental standards has become a printing industry requirement. Electrophotography's dry toner-based systems do not contain solvents, volatile substances or low molecular weight components, making them far superior to solvent- based inkjet and liquid toner—both with respect to VOC emissions and paper recyclability.

Inkjet technology sees UV inks as a solution for both reducing VOC emissions and addressing the evaporation issues when the ink is in the printhead to prevent nozzle clogging. However, UV light increases the energy consumption during printing, and the reactive type of chemicals used in these inks create safety concerns for operators and service engineers. Depending on the type of end-user application, special safety precautions have to be taken (e.g. in printing material for food applications).

UV inks continue to have issues with respect to the deinkability behavior. During the recycling process, repulping causes UV-curable and liquid toner inks to become ink specks—too large to be removed by flotation and too elastic to be removed by screening. When looking at pigmented inkjet inks, the flotation process doesn't work as well because the particles are too small to be removed. Dry toners, used for digital color printing processes, are widely accepted as deinkable. — Dr. Lode Deprez, VP Toner Development Group for Xeikon unit at Punch Graphix