Illustrator Tutorial: Trapping Illustrator Ca Viet Nam Dan. Unsubscribe from Ca Viet Nam Dan? Cancel Unsubscribe. Subscribe Subscribed Unsubscribe 102. Illustrator plugins are a useful addition to Adobe's vector tool, and in this article, we'll guide you through the best ones around. While Adobe Illustrator doesn't have as many plugins as its raster brother Photoshop CC, the ones that are available do a great job of introducing new new tools.
Where colors printed from separate platesoverlap or adjoin one another, press misregistration can cause gapsbetween colors on the final output. To compensatefor potential gaps between colors in artwork, print shops use a techniquecalled trapping to create a small area of overlap (calleda trap) between two adjoining colors. You can use aseparate, dedicated trapping program to create traps automatically,or you can use Illustrator to create traps manually.There are two types of trap: a spread, in whicha lighter object overlaps a darker background and seems to expandinto the background; and a choke, in which a lighterbackground overlaps a darker object that falls within the backgroundand seems to squeeze or reduce the object. When overlapping painted objects share a common color, trappingmay be unnecessary if the color that is common to both objects createsan automatic trap. For example, if two overlapping objects containcyan as part of their CMYK values, any gap between them is coveredby the cyan content of the object underneath.Trapping type can present special problems.
Avoid applying mixedprocess colors or tints of process colors to type at small pointsizes, because any misregistration can make the text difficult toread. Likewise, trapping type at small point sizes can result inhard-to-read type.
As with tint reduction, check with your print shopbefore trapping such type. For example, if you are printing blacktype on a colored background, simply overprinting the type ontothe background may be enough. Specifiesthe trap on horizontal lines as a percentage of the trap on verticallines.
Specifying different horizontal and vertical trap valueslets you compensate for on‑press irregularities, such as paper stretch.Contact your print shop for help in determining this value. Thedefault value of 100% results in the same trap width on horizontallines and on vertical lines. To increase the trap thickness on horizontallines without changing the vertical trap, set the Height/Width valueto greater than 100%. To decrease the trap thickness on horizontallines without changing the vertical trap, set the Height/Width valueto less than 100%. Reducesthe tint of the lighter color being trapped; the darker color remainsat 100%. This option is useful when trapping two light-colored objects,where the trap line may show through the darker of the two colors, resultingin an unsightly dark border.
For example, if you trap alight yellow object into a light blue object, a bright green borderis visible where the trap is created. Check with your print shopto find out what percentage of tint is most appropriate given thetype of press, inks, paper stock, and so on being used.