HomeProfile Product RangeIndustriesInfrastructureOur QualityCustom ManufacturingNetworkContact UsSend Enquiry
Dyes for Water Based Inkjet Inks
It is an important fact that water based ink will accept only dyes
that are water soluble. When choosing dyes for water based inkjet inks the
choice is a bit limited as the vehicle restricts the types of dyes.
Dyes that are used for water based inkjet inks must provide colors that are
highly saturated. Should scatter or refract only a very little amount of
light. Various class of dyestuffs has been developed like reactive, direct,
acid or base for application in Inkjet Inks.
Water based Ink-jet inks that has good pH stability may be made by using
yellow dyes and buffers. Examples can be given of yellow dyes made from
water-soluble azo and bis azo dyes. Some of the products in this category
are C.I. Direct Yellow 142, C.I. Direct Yellow 86, C.I. Direct Yellow 132,
C.I. Direct Yellow 173 etc.
Selecting the Right Dye for water based inkjet inks
Inkjet inks are employed for very delicate
purposes that requires precision, so the dyes used must be of very high
standard and quality. It should show the following qualities:
- Excellent tinctorial strength and brilliancy.
- Light and water fastness should be high.
- Fairly good surface tension.
- Protection against gas fade stability.
- Extremely low salt content (content with respect to Chlorine,
Sulfate, Calcium, Magnesium, pH, solubility, strength and shade).
- High purity: The users well understand the critical importance of
high purity in inkjet printing. It is pertinent to employ purification
techniques that enables to remove inorganic salts along with tracing of
filter inks and organics to levels of submicrons. A combination of the
following processing technology is a must:
- Reverse osmosis/Ultrafiltration- for removal of inorganic salt.
- Ion exchange - to improving solubility.
- Carbon treatment - that improves surface tension.
- Microfiltration - effective in removal of 99.9% of insolubles.
- Specialized cartridge filtration (low to the level of 0.2 micron)
- that can filter out most insolubles.