Kind expression is important to the press (8)
I believe the answer is:
typeface
'important to the press' is the definition.
I can't judge whether this defines the answer.
'kind expression' is the wordplay.
'kind' becomes 'type' (type is a kind of kind).
'expression' becomes 'face' (I can't explain this - if you can you should believe this answer much more).
'type'+'face'='TYPEFACE'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for typeface that I've seen before include "Baskerville, perhaps" , "Printing font" , "Courier, maybe" , "Style of print" , "Design of font" .)