Slight gaps between overlapping colors and moire patterns in process colors. Trapping and overprinting are two techniques that help compensate for misregistration. Misregistration occurs when paper stretches and shifts as it absorbs moisture and is pulled through a press. The colored plates on a multi-color job misalign, resulting in two problems as ink gets laid onto the paper.
The mis-alignment of features, e.g. solder resist to pad misregistration.
Nonconformity of the position of a pattern (or a portion of the pattern), a hole, or other feature to its intended position on a printed board.
The unwanted result of incorrectly aligned colors on a finished printed piece due to many factors including paper stretch and plate alignment.
One or more of the four passes (Cyan, Magenta, Yellow of Black) not completely aligned onto one another. This usually leaves a shadow or halo effect throughout the entire image.
The lack of adequate dimensional conformity between two or more patterns or features. Examples include misregistration of a board with respect to a stencil or the misaligment between layers of a printed circuit board.