Toners
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Toner pigments
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Color Index
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Pigment Red 48,57,60,68
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Structure
The base molecule can be simple Beta-naphthol azo molecules or Beta-naphthol azo
molecules with a carboxylic acid on the naphthol (Beta Oxy Naphthoic Acid (BONA)
toners).
Figure 1 : Toner pigments structure - Pigment Red 48
Properties
These pigments are insoluble because they contain a metal into their molecule. The
metal has a significant effect on the shade of the pigment and on its fastness properties.
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Properties of toner pigments
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Property
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Toner pigments
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Solvent resistance
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good
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Heat Stability
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very good
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Acids resistance
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poor
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Alkalis resistance
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poor
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Color
Toner pigments have a wide color range from yellow, through red and magenta, to
violet.
Uses
Toner pigments are used a lot in the printing ink industry.
