Colour Separations / Material Requirements


1. Base material
  • Newsprint - neutral in colour
  • Newsprint characteristics with standard L*a*b value
  • Backing    L*      a*      b*
  • Black        82      0      3
  • White       (85)      (1)      (5)
  • Max tolerance in production:   L*4      a*2      b*2
2. Newsprint
  • 42 g/m2
3. Ink densities
  • Cyan 0.90      Magenta 0.90      Yellow 0.90      Black 1.10
  • Tolerence ± 0.05 for all colours , above zero paper base.
4. Colour sequence
  • Cyan - Magenta - Yellow - Black
5. Screen ruling
  • 100 lines per inch
6. Dot shape
  • Eliptical P dot.
7. Screen angles
  • Cyan 15º      Magenta 75º      Yellow 0º      Black 135º
8. Scanning resolution
  • 300 dpi
9. Maximum ink density
  • 220% for 4 colour printing & only 1 colour may be solid
  • 160% for 2 colour printing & only 1 colour may be solid
  • This is to improve trapping and reduce set-off, lost details and smudging.
10. Proofing standard
  • IFRA standard profile for newspaper printing - ISO 12647-3
  • ISOnewspaper26v4.icc for colour profile
  • ISOnewspaper26v4_gr.icc for grey scale profile
11. Dot gain
  • Dot gain of 26% at the 50% dot area.
12. All line copies
  • Minimum 7 points, except for legal & proclamation ads (minimum 5.5 points)
  • Recommend sans serif typeface for greater clarity & readability
13. Reversed text on colour
  • Minimum 12 points for BW sans serif typeface is recommended.
  • Minimum 14 points for 4 colour printing
  • Not to be positioned within screen areas less than 70% nor in yellow / light colour background
14. All rules & character strokes
  • Minimum 0.5 points
  • Thin rules & small light typeface lettering/text should be restricted to single colour solid printing
15. Point to check
  • Overprint & Knockout trapping
16. Colour ads
  • Do not contain Spot, LAB or RGB colours.
  • Please convert Spot / Pantone colours to CMYK
17. Format & Compatibility
  • Acrobat 6 and above (PDF 1.5) without crop marks and bleed.
  • Ensure file can be separated correctly.
18. For Grayscale images
  • Highlight 7% to 9%
  • Shadow 85% to 90%
19. The background
  • On which the text is to be printed on should be hollowed out.
  • Text should be boldface sans serif typeface.

Notes :

  1. Due to mode of printing (high speed web wet-on wet) on newsprint, a certain degree of set-off and see through must be expected.
  2. Misregistration of 0.5mm is acceptable in Newspaper colour printing.
  3. Advertisement printed on newsprint will always appear darker than the final sheet-fed proofs supplied by the production houses due to inevitable dot-gain.