Image primarily printed on rag has quality (8)
I believe the answer is:
portrait
'image' is the definition.
(portrait is a kind of image)
'primarily printed on rag has quality' is the wordplay.
'primarily' says to take the initial letters.
'has' says to put letters next to each other.
'quality' becomes 'trait' (I've seen this before).
The initial letters of 'printed on rag' is 'por'.
'por'+'trait'='PORTRAIT'
(Other definitions for portrait that I've seen before include "Head/shoulders painting" , "Painting of a real person" , "Depiction of person" , "Person's picture" , "Picture of person" .)