The above examples are typical options of metal halides for specific applications.
Gallium Iodide -introducing spectral lines at 400nm and 420nm of the electromagnetic spectrum,this lamp is suitable for curing of white pigmented coatings and therefore it is commonly used in Diazo type processes.
Iron Iodide - This UV lamp enhances the spectral output between 320-400nm and it is used where deeper penetration is required. Applications include thick pigmented coatings and very thick clear coats.
Selecting the right spectral output is vital for efficient UV curing performance. Multi-spectrum lamps may consist of two or more additives, and using this type of lamp can improve performance across a range of different exposure products.In order to obtain the best results in all processes, the lamp should closely match the requirements of the photo-chemical process.