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Discussion

Match each printing phenomenon with its cause.
List I
A. Mechanical dot gain
B. Optical dot gain
C. Trapping
D. Total area coverage limit
List II
1. how well one ink accepts another over it
2. ink spreading physically on the paper
3. the maximum ink the substrate can take
4. light scattering within the paper substrate

  • A.A-3, B-1, C-4, D-2
  • B.A-2, B-4, C-1, D-3
  • C.A-4, B-2, C-1, D-3
  • D.A-2, B-4, C-3, D-1

Answer: B

Each affects the printed result independently of the colour separation itself. Characterising the press and the paper together is what makes accurate reproduction possible. Press and paper must be characterised together.

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