Printer is kind to a crossword compiler (10)
I believe the answer is:
typesetter
'printer' is the definition.
(typesetter is a kind of printer)
'kind to a crossword compiler' is the wordplay.
'kind' becomes 'type' (type is a kind of kind).
'to a crossword compiler' becomes 'setter' (I've seen this before).
'type'+'setter'='TYPESETTER'
'is' is the link.
(Other definitions for typesetter that I've seen before include "One doing composition" , "Old newspaper producer" , "Printing expert" , "Compositor" , "Former newspaper employee" .)