Process technologies for tomorrow.


Printer toner in its early form was simply carbon powder. Then, to improve the quality, the carbon was melt-mixed with a polymer. Toner has traditionally been made by compounding the ingredients followed by breaking, milling, a classifying step and a post blending step. This process results in toner granules with varying sizes and aspherical shapes. 

More recently, chemically produced toners (CPT) have been developed that pose different processing requirements. Hosokawa Micron's Nauta vacuum dryer and the Cyclomix are two of our powder processing solutions that correspond perfectly with these changes. 

Nauta® vacuum dryer

The Nauta vacuum dryer is able to dry large batches of Chemically Produced Toner to the desired moisture level. Because of the high level of vacuum the product can be dried at low temperatures, avoiding the product to melt or agglomerate in the dryer. Due to the design and our experience, we can build the dryers up to 22 m³ in cantilevered execution. This means that no additional uncontrolled heat is being developed by a support of the screw since the drive design is strong and the screw does not need to be supported.

Nauta® vacuum dryer

Cyclomix high-shear impact mixer

The post blending can be done efficiently in the Cyclomix, mixing the dried, cohesive toner with the flow adding agent and a charge control agent. These additives coat the base toner particles as the high shear forces in the Cyclomix rolls the toner particles around the mixer and through the additives. The Cyclomix is equipped with a cooling jacket on the vessel and on the cover to avoid the material heating up during mixing. It also has a special seal design to avoid small particles melting in the seal area. This results in particles with equal flow and conductivity behavior in the printer.

Cyclomix high-shear impact mixer


Test Centre in Doetinchem, the Netherlands Test Centre in Doetinchem, the Netherlands

Our test and process development centre in the Netherlands offers unique possibilities for testing your product to determine the most efficient process, system or plant prior to final design. We can provide laboratory-level as well as production-sized trials.

Whether you wish to test a single machine or a complete powder processing system, the same skilled and experienced staff are here to help ensure that your requirements are met, and that you are entirely satisfied with the results.

We offer process equipment and technologies from individual units to large scale bespoke system solutions. Our principle is to deliver high performance yet affordable solutions that meet our customers' demands and long term challenges.


To learn more about our powder processing equipment and systems for the production of printer toner, contact us:



Hosokawa Micron B.V. is certified in accordance with NEN-EN-ISO 14001:2015. This certification requires the implementation of an Environmental Management System consisting of requirements to ensure that all processes related to the environment are routinely identified, assessed and managed. The certification of Hosokawa Micron covers all environmental themes of ISO 14001: air, soil, energy, waste, water, noise and hazardous substances.

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