PEL has a fully automated iTi Drop WatcherŽ for the analysis of drop ejection from various greyscale and binary inkjet heads.
We can characterise an ink jet fluid with a variety of different inkjet heads to optimise fluid formulation, waveform selection and drop ejection parameters (such as velocity, cone angle and droplet formation).
Waveform optimisation and development.
As part of our partnership with Xaar plc, PEL have access to a waveform development tool for the optimisation and fine tuning of fluids in Xaar inkjet heads.
Professional Documentation
We will provide an expert analysis of the fluid ("ink") characteristics in the heads under evaluation and will deliver a complete report with our findings together with recommendations where appropriate.
Studies of the whole of the time of flight
Analysis of drop ejection from an ink jet nozzle is essential to correctly jetting the particular fluid.
An example video is shown of drop ejection from an (un-optimised) greyscale inkjet system. The video shows sub-drop formation in the region of the nozzle plate and time of flight over the first 0.5mm.
However, a full understanding of the "whole of the time of flight" gives a much fuller picture of the drop's behaviour. This of course includes the point at which the drop impinges on the surface of the substrate and interacts with it.
Through our partnership with the Inkjet Research Centre at Cambridge University , our colleagues are able to offer high speed analysis of the moment that the drop hits the surface. The video below shows a fluid jetted from a binary ink jet head hitting a copper substrate and spreading. The video was taken using ultra high speed flash photography.
PEL has a fully automated iTi Drop WatcherŽ for the analysis of drop ejection from various greyscale and binary inkjet heads. 
