Inkjet applications include small office and home printers (SOHO), large format printers for advertising and graphic arts prints, and high volume industrial printers for marking, coding and labeling. Colorants for textile inks, inkjet inks have to meet stringent quality criteria. Inks may be stored in cartridges for several months before being passed through tiny, sensitive nozzles with thermal or mechanical stress in order to form droplets of defined size and shape. Key requirements are High surface tension to provide reliable droplet formation and ink flow low viscosity for consistent ink flow excellent filterability own to 0.2 μm filter pores extremely low salt content to protect print heads and nozzlesfrom corrosion absence of bivalent cations and heavy metals for long-term storage stability Besides the printing process, the colorants are an essential factor for print and image durability, and have to provide:

• Fastness to visible light and UV radiation
• Fastness to ozone and other oxidative air pollutants
• Fastness to humidity and mechanical abrasion

WATER BASED INKJET DYES

Janak Enterprise technical colors comprehensive purification and filtration services address markets in which is of critical importance, such as inkjet printing. For dye purification Janak Enterprise employs a combination of processing technologies:

• Distillation to remove inorganic component
• Ultrafilteration for remove inorganic impirities
• Reverse osmosis to make compound salt free
• Ion exchange to improve solubility
• Carbon treatment to improve surface tension
• Microfilteration to remove almost 100% insolubles
• Specializes cartridge filteration (as low as 0.2 micron) to remove most insolubles.

Direct Dyes

Acid Dyes

Reactive Dyes

Food Colour

Trichromic Dyes