Logophoricity is a phenomenon of coreferentiality that is not covered by the Binding theory. Compare (i) and (ii):
(i) * Billi told us that Elisabeth had invited himselfi (ii) Billi told us that Elisabeth had invited Charles and himselfi
In (i) himself cannot be bound by Bill (due to Condition A of the Binding theory). But in (ii) himself can be coreferential with Bill in (apparent) violation of Condition A. The co-referentiality of (ii) is considered one of logophoricity.