Although the actual values ​​will vary with each production process, the survey conducted by the GCA Print Properties Committee in 1991 showed that the target values ​​listed in the following table have a The meaning of sex.
element
100% (field)
Print contrast
50% expansion of outlets
25% expansion of outlets
green
1.25
30% or higher
twenty four%
20%
Products
1.30
30% or higher
twenty four%
20%
yellow
0.98
25% or higher
twenty two%
16%
black
1.65
33% or higher
28%
twenty four%
Note: The values ​​in the above table are all industry averages and will vary depending on factors such as paper, ink, printer, press operator, plate type, etc. Also note that these values ​​are very effective for copying high quality prints, but do not necessarily disregard the appearance of the images rather than achieving these absolute data.
