Read more

Ink profiles
The performance of Process Colour ranges are described according to 6 criteria graphically represented by the Ink Profile.
Each criterion is assigned a simple rating between 1 and 6:

Example : LOGO 18000 Process Colours
• 1 = average to low performance.
• 6 = excellent performance. By visualising the technical profile of a Process Colour range, the printer can predict the behaviour of the ink on the press as well as the qualitative results of the print, providing a suitable substrate has been chosen.
Definitions of ink performance criteria:
Duct freshness: Ability of the ink not to dry, either on the press or in open tins.
Setting: Ability of the printed ink not to remain sticky when touched (touch dry state). It provides an indication of the speed at which the ink penetrates into the substrate: if the setting is rapid (in other words, touch dry within one minute of printing), the risk of set-off is considerably reduced.
Colour strength: Ability of an ink to give maximum optical density with a minimum inking.
Gloss: Light intensity reflected by the dry ink film (very dependent on the surface condition of the substrate).
Rub resistance: Ability of the dry ink film to resist rubbing and abrasion.
Drying speed: Time required to obtain complete hardening of the ink film through air oxidation.
 We have analysed all of the different types of substrate used in offset prin- ting according to the criteria of absorption, surface condition and abrasiveness as defined hereafter. This analysis has enabled recommendation tables to be established for different ink series.
Non coated
Matt coated
Gloss coated
Lightweight paper
Non absorbent substrates (1)
Synthetic substrates (2)
*** Perfectly suitable ** Suitable * Test necessary Not suitable
Example : Recommendation for the LOGO 18000 Process Colours range as a function of the substrate type.
Definitions of substrate performance criteria:
Absorption: Ability of the substrate to absorb part of the components of the printed ink.
Surface condition: Characterises the surface relief of the substrate (flat or irregular). Abrasiveness: Ability of a substrate to deteriorate a dry ink film by rubbing.
Top of the page
  Home |  Legal |  Site Map | Flux RSS

Conception Café Noir