That can be published after undoing triple ban (9)
I believe the answer is:
printable
'that can be published' is the definition.
(able to be printed or published)
'undoing triple ban' is the wordplay.
'undoing' indicates anagramming the letters.
'triple'+'ban'='tripleban'
'tripleban' is an anagram of 'PRINTABLE'.
'after' is the link.
(Other definitions for printable that I've seen before include "Fit for publication" , "fit for Times" , "suited to newspapers" , "OK for publication" , "Fit to be published" .)