Hello Everyone!

I would like to take into consideration the aspect of printed sheet drying effect.

In ISO standard for offset, there are aim values for primary colors.

From my observations these values (hopeful) are possible to achieve during printing.

However, to get these values it is nescessary to print in general with higher ink amount on the paper (than "before"). Even then, these already achieved values (ISO P1) are more or less no problem on wet sheet. However, to be closer with aims on dry sheets, it is nescesarry to ad more ink on the paper which causes problems with back transfer and so on... For example black ink:

Wet: L=16 which is OK

Dry (the same): L=22 which is not OK.

If you additionally consider the fact, that ISOcoated.icc has TIL=350%, then we have real problem.

But... I haven't found in ISO12647-2:2004 any information whether theses aim values are proper for wet or dry sheet.

What is you opinion about that?

best regards

szymon