  The FZZT and ZZ branes in (p,p+1) minimal string theory are studied in terms
of continuum loop equations. We show that systems in the presence of ZZ branes
(D-instantons) can be easily investigated within the framework of the continuum
string field theory developed by Yahikozawa and one of the present authors
(hep-th/9609210). We explicitly calculate the partition function of a single ZZ
brane for arbitrary p. We also show that the annulus amplitudes of ZZ branes
are correctly reproduced.
