A method is proposed for the fractal analysis of the crystal surfaces
of a wide range of calcium 4B toner pigments, previously characterised
by McKay [FATIPEC Congr. XVIII, 2B (1986), 405]. It is concluded that
the crystal surfaces of all but two of the pigments are very smooth.
Values for the degree of face-to-face packing of the pigment crystals
have been determined from the fractal analysis. These values generally
agree closely with the values obtained by McKay's method. (C) 1997 El
sevier Science Ltd.