Work component of photo scanner (5)
I believe the answer is:
tosca
'work' is the definition.
(I've seen this before)
'component of photo scanner' is the wordplay.
'component of' says the answer is hidden in the clue (I've seen this in other clues).
'TOSCA' is hidden within 'photo scanner'.
(Other definitions for tosca that I've seen before include "Opera at Ascot?" , "Opera heroine who leaps to her death" , "Photographic device" , "Luigi -, Italian playwright" , "Coats off for a great opera" .)