Process Color Printing On A One-color Press

• Finally, there is the inability to see the final appearance of the composite color during each intermediate pass.

When I mention trapping, I am referring to the pressroom context of the word, not the graphic designer or pre-press technician's definition. Ink trap is the ability for one ink to transfer and adhere onto another ink, whether that first or bottom ink be wet or dry. Film trap is the amount of overlapping between different but adjacent colors so any misregistration doesn't result in the showing of white paper in the gap.