Printing guide fo audio books(3)

1.3. 4-film OID printing

4-films printing methodology is required to make use of 3 color layer(s) and additional index layer. The ink for the index layer MUST contain carbon or graphite while the ink for the color layer(s) MUST NOT contain carbon or graphite. 

The ink of C,Y,M,K from conventional printing process, ONLY the ink for K film does contain carbon or graphite but not the ink for other films. Following summarized the requirements from each layer(s).

1.The INK for C-film  →→ USE NORMAL ink for C-film(without Carbon)

2.The INK for Y-film →→ USE NORMAL ink for Y-film(without Carbon)

3.The INK for M-film →→ USE NORMAL ink for M-film(without Carbon)

4. The INK for INDEX film →→ USE INK WITH Carbon or to use ink for normal K-film that usually contains Carbon.