Glossary of Graphic Arts Terms re: heavy metals (used in the Printing Ink Industry)

A transparent white extender used in printing inks, often called magnesia.

Manganese Driers

A material containing chemically combined manganese used to accelerate the oxidation and polymerization of an ink film.

90-92, 95

Metallic Inks

Inks composed of aluminum or bronze powders in varnish to produce gold or silver color effects.

Molybdate Orange

An inorganic pigment used to produce opaque orange inks and red inks. It consists of a mixture of lead chromate and lead molybdate.

Naphthenate Driers

Compounds of naphthenate acid with metals, usually lead, cobalt, or manganese used to accelerate the oxidation of the ink film.

Ochre

Naturally occurring yellow iron oxide pigment.

Permanent Violets

A light resistant, tungstated or molybdated methyl violet pigment used in printing inks.

Carbazole violet.

Phloxine

Blush red pigment used for process red inks. The hue is often referred to as magenta. The term phloxine is applied to the lead lake of eosine.

Prussian Blue

A red shade iron blue pigment.

Vermilion

A red mineral pigment consisting of a sulfide of mercury.

Zinc Oxide

An opaque inorganic white pigment used in inks.

Zinc Yellow

A yellow pigment consisting essentially of zinc chromate.