These inks are composed of aqueous solutions of synthetic chemical, to which a preservative and a flux are added.

• Dyestuffs ink

• Coloring writing materials

• Blue-black

• Carbon

The inks are supposed to be best writing inks, quick drying, waterproof and durable. So, manufactures introduced alkali-resistant dyes in caustic soda solutions.

• Indelible ink

• Carbon ink

• Fountain pen ink

• Optical Bleach ink

The ink which gives permanent color, usually violet or purple, to iron compounds, with other ingredients.

• Carbon ink

• Dyestuffs ink

• Logwood ink

• Iron-tannin ink

Finely ground graphite mixed with clay and forced through small holes issuing in long twine-like strands, then baked and glued into a circular glove, between two semi-cylindrical strips of woods.

• Modern graphite

• Graphite

• Lead

• Bismuth

These inks are usually composed of a blend aniline dye, carbon black with glycerin and oil such as olein or castor oil.

• Iron Gallotonate ink

• Indelible ink

• Sephia

• Typewriter ribbon ink

Indigo added to an iron tannin solution. Blue at time of writing, but that fades, the iron oxidizes, and the writing turns black.

• Ball point pen ink

• Blue ink

• Blue-black

• Nigrosine ink

Finely ground graphite, clay and aniline dye mixed and made into the writing center, or core, of wood holders.

• Lead

• Copying

• Ball point pen

• Bismuth

Natural graphite sawed into thin sheets thicker on one edge than on the other and then glued between two grooved pieces of wood.

• Bismuth

• Graphite

• Lead

• Wax

These substances absorb the shorter wavelength of the light incident upon the paper and fluoresce with a bluish color or glow.

• Optical bleaches

• Indelible ink

• Carbon

• Nigrosine ink

The ink that consisted essentially of a mixture of ferrous sulphate and an infusion of nutgalls.

• Iron gallotanate ink

• Fountain pen ink

• Carbon

• Logwood