A method for producing a display capsule includes the following steps. A
multichromal bead having at least two surfaces differing from each other
in optical and electrical characteristics is formed. A dispersing agent
on an outer surface of the multichromal bead is applied, preferably via
spray coating. The multichromal bead is then encapsulated. The invention
is also directed to a method for producing multichromal capsules. A
multichromal bead having at least two surfaces differing from each other
in optical and electrical characteristics and further includes a charge
control additive. A dispersing agent is applied on an outer surface of
the multichromal bead to prevent diffusion of the charge control additive
from the multichromal bead. The multichromal bead is encapsulated at an
encapsulation reaction temperature greater than 40.degree. C.