How much should I trap for screen printing?
The art must be sized to 11 inches wide to fit nicely on the front of our chosen shirts; one set of screens will print the small, medium, large, and extra large. The printer asked for a trap of 1point on the adjoining colors.
What is trapping in prepress?
In prepress, the compensation for misregister of successive colors or images. Trapping and trapping techniques ensure that there are no unsightly gaps or overlaps of successively-printed colors or images.
What is choke in printing?
A choke is a photographic enlargement of the background color in which a second image will print. This has the effect of reducing the size of the hole in which a foreghround oibject will be printed.
What does trapping mean in Illustrator?
To compensate for potential gaps between colors in artwork, print shops use a technique called trapping to create a small area of overlap (called a trap) between two adjoining colors. You can use a separate, dedicated trapping program to create traps automatically, or you can use Illustrator to create traps manually.
How much does it cost to choke an Underbase?
What you’ll need to do is choke the white base. To choke the base, make the stroke not as thick as the strokes on the colors. If the strokes on the colors are one point, try 0.5 for the underbase.
Why is trapping important in printing?
Trapping avoids any white shapes showing in between colours when inks are slightly out of register. ‘Registration’ is making sure each ink sits exactly over the top of each other and that each ink is registered with each other. Your printer will set their preferred trapping amounts.
What is trapping in printing process?
Trapping in printing is the compensation for misregistration between printing units on a multicolor press. Trapping files involves creating overlaps (or ‘spreads’) or underlaps (‘chokes’) of objects during prepress to counter misregistration on the press.
What is trapping setting on printer?
To minimize the effects of misregistration, commercial printers developed a technique called trapping. What is Trapping? Trapping is a method of adjusting areas where two distinct, adjacent colors meet so that press misregistration won’t cause white spaces.
What is the difference between overprint and knockout?
Knockout is the opposite of overprint. Knockout is a better word in that it does do what the name suggests. Any text or objects set to knockout will be remove or ‘knocked out’ all inks from underneath them.
What is trapping on print quality?
Trapping is the technique that is used to compensate for registration issues of successive colors or images. It ensures that there are no ugly gaps or overlaps in the printed result. Misregistration can occur because of: Instability of the printing press. Dimensional instability of the paper or medium that is printed …
When do you need to use trap in printing?
When the two colors in question are spot colors, trapping is always needed: from the moment the artwork is imaged on film or plate, the colors are handled separately and are printed on two different printing units. The same approach applies if one of the colors is a spot color and the other a process color.
What does trapping mean in the graphic arts?
In graphic arts, the term trapping has a different meaning in prepress and in printing. Trapping is the technique that is used to compensate for registration issues of successive colors or images.
When do you use a trap color in CMYK?
When the two colors are process colors, the trap contains the highest value of each of the CMYK components. This trap color is always darker than the two abutting colors. In some cases, more specifically when the two colors are pastel-like colors, this might result in a trap that is perceived as too visible.
How big should a trap be for a 150 lpi screen?
That means creating traps that are 1/300 inch (0.08 mm) wide for a 150 lpi screen ruling. If one of the colors involved is black, traps are often up to twice as wide since the effect is less visible with such a dark color.