Substrates Final 3

Printing inks are principally made up of

a. Binders

b. Colorants

c. Additives

d. All of the above

d. all of the above

Give the printing inks the desired color (hue)

colorants

Anchor colorant on the print carrier

binders

Transport colorants

carrier substances 

Influence of the ink behavior, such as drying, flow behavior, and abrasion resistance

additives

Pigments are organic compounds that are dissolved in the system during application.

True

False

False

Dyes are organic compounds that are insoluble in the ink vehicle and must be held in suspension in the base liquid.

True

False

False

Typically speaking, smaller particle size in pigment results in poor dispersion, poor flow, lower hiding power, poor color strength, and lower gloss level.

True

False

False

The disadvantage with most dyes is their limited light-fastness.

True

False

True

Under the influence of ultraviolet light or electron beam radiation, drying is complete in a fraction of a second.

energy curing

Drying of the ink is accomplished by evaporating the solvent.

evaporation 

Occurs whenever ink is printed on paper.

absorption

Varnishes that are derived from drying oils, react with oxygen in the air.

Oxidative Polymerization

The study of the flow of fluids (liquids or gases) is known as rheology.

True

False

True

Dynamic viscosity (tackiness) is termed as the inner resistance to the flow of the ink.

True

False

True

The less viscous an ink, the less easily it flows and the more difficult it is for it to spread into a film.

True

False

False

Which of the following is not an optical property of printing ink?

a. Color

b. Gloss

c. Opacity

d. Lightfastness

Lightfastness

Which of the following is not a working property of printing ink?

a. Flash point

b. Length

c. Viscosity

d. Odor and taste

d. Odor and taste

Which of the following is not an end-use property of printing ink?

a. Lightness

b. Color strength

c. Abrasion resistance

d. Water resistance

b. Color strength

Liquid inks are used for letterpress and lithography, and paste inks are used for gravure and flexography.

True

False

False