Drying of print

The chemical drying of printing inks involves oxidation (where unsaturated oils are cross-linked by atmospheric oxygen) or polymerization of binder constituents by UV light. The first setting is often by striking in, even with chemically-dried printing inks. 

OTHER COMMENTS used in the preparation of quaternary ammonium compounds ingredient of photographic development accelerator, for drying of printing inks, and in carpet cleaners used as a corrosion inhibitor and as an accelerator for rubber used as a catalytic solvent in chemical synthesis also used in the desalination of seawater use in non-nutritive sweeteners, ketenes, and salts. 

Scheuter, K.R. and Dosdogru, G., Factors influencing the physical drying of printing inks in drying systems. In Advances in Printing Science, Vol. 6, Pergamon Press, Oxford, U.K., 1970. 

Microwave drying n. Drying of printing inks by the use of microwave radiation. The presence of polar materials is a prerequisite. 

There are four principal classes of printing ink, which vary considerably in physical appearance, composition, method of appHcation, and drying mechanism. These also fall into two general types of consistency or viscosity, paste and Hquid. The classes are letter press and Hthographic (Utho) inks, which are called paste inks, and flexographic (flexo) and rotogravure (gravure) inks, which are called Hquid inks (1). 

The four key properties of inks are drying, rheology, color, and end use properties. Use properties are those considerations that determine how printed substrates function throughout all processing and usage from the time of printing throughout the useflil life of the printed product. 

Inks for continuous ink-jet printers typically comprise dyes dissolved in water or solvent having salts added to make the ink conductive for electrostatic charging. Whenever waterproof printing is required, low boiling solvent inks ate used. For printers that ate used in office environments, water is used as the ink solvent. Using water-based inks, humectants may be added to inhibit drying of ink in the sump and surfactants ate added to wet the printing surface. 

Humectants and low vapor pressure cosolvents are added to inhibit drying of ink in the no22les. Surfactants or cosolvents that lower surface tension are added to promote absorption of ink vehicle by the paper and to prevent bleed. For improvements in durabiUty, additional materials such as film-forming polymers have been added. Ink developments are providing ink-jet prints with improved lightfastness, waterfastness, and durabiUty. As a result, such prints are beginning to rival the quaUty of electrophotographic prints. 

Direct Printing. This is the simplest technique and accounts for the majority of printed fabrics. In this style the print paste is apphed directiy onto the fabric which can either be white or already dyed with a pale ground shade. Each color requires its own print paste and appHcation and each color is printed immediately after each other without intermediate drying. 

Mark wants to take me all the way home, but I say in as firm a voice as I can muster that I have things to look up in the Saint Bride Library of printing, and get him to drop me as soon as we re over Blackfriars Bridge. I walk through the neat, old alleys and steps, which are centuries-worn but corporate-clean, the prosperous bustle of the City behind me apparently wiping out the last, louche remains of Fleet Street. Without Mark at my side I don t have to feel anything for a while it can all be dry, cool professional activity. 

Radiation-curable epoxy acrylates, 10 450 Radiation cures, silicone network preparation via, 22 567-569 Radiation curing coatings, 7 133-135 of printing inks, 14 314 Radiation damage, ion implantation and, 14 435-436 Radiation drying coatings, 7 29-30 Radiation effects... 

Stoddard solvent is a petroleum distillate widely used as a dry-cleaning solvent and as a general cleaner and degreaser. It may also be used as paint thinner, as a solvent in some types of photocopier toners, in some types of printing inks, and in some adhesives. Stoddard solvent is considered to be a form of mineral spirits, white spirits, and naphtha however, not all forms of mineral spirits, white spirits, and naphtha are considered to be Stoddard solvent. 

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