Solvent ink refer to the oil based solution that hold the pigment and resin, and has the advantage of being fade-resistant, waterproof and resistant to abrasion. Solvent ink can print on many different uncoated banners & vinyls, allowing the pigment to bond better. The solvent then evaporates, or is flashed off with the heaters on the solvent printer, leaving the pigment behind. This ink will typically resist fading for five to seven years, and is excellent for use with long-term outdoor banners and vinyls, because volatile organic compounds are present, venting really is a must for this ink. It does not take a lot of heat for the carrier to evaporate, and because the oil based corrosive, a print head with solvent ink is easily clogged. Regular cleanings are mandatory to keep this printer running well.

Eco solvent ink can print on many uncoated substrates and takes longer to dry out than solvent ink, making the maintenance of an eco solvent printer less time consuming than a solvent machine. Once a week maintenance is usually sufficient to maintain a printer using this ink. It will typically take two to three years before the ink begins to fade, and it is waterproof and resistant to abrasion. Much like solvent printers, the eco solvent printers using eco-sovent ink use heat to evaporate the solution away. Outgassing can continue to occur for up to 24 hours on both solvent and eco solvent inks, so there is a waiting period before you can begin any finishing, particularly lamination. Eco solvent ink is great for pos/pop, banner, vinyl, wall graphics, trade show graphics, window perforated, treated papers and some fabrics that have an inkjet receptive coating

The most common type of uv curable ink used in digital printing is composed mainly of oligomer and monomer acrylate resins along with photo initiators. When this composition is exposed to UV radiation, free radicals are released that cause the polymweization of the compound to harden to a dry ink film.The pigment is then encapsulated within this film. This type of UV radiation can be LED UV light source or mercury UV arc lamp. UV curable ink do not evaporate like solvent ink, and instead are “cured” when the UV light system of the printer passes overhead, because of the low viscosity of UV curable inks and they do not penetrate into the media, they use less volume than solvent, eco-solvent. Though the ink itself can be as expensive, the amountused is less, which makes it an economical choice. Printing directly onto rigid substrates is the big benefits of UV curable ink. The time and money saved are well worth the investment. UV curable inks are great for rigid boards, glass, wood, metal, POS/POP and for roll materials such as banners, vinyls and many fabrics.

Aqueous inks are liquid based(water sometimes,and other times a substitute liquid) with either colorants or pigment particles. They are typically descried as dye and pigment inks and are occasionaly referred to as dye UV, however, the UV designation refers to the pigment, which is more durable under UV exposure than dye based ink.

Once you consider each facet of the different inks sets available, you can make a more informed decision about the right ink for your application-and cost may not be the deciding factor. Take the time to know what you want to accomplish and investigate the options so that you make the right selection for your operation”