Moiré

The wrong angles of overprinting halftone screens produced an undesirable halftone pattern.

 

Coil Binding – Printing Terms Glossary

Where a plastic or metal wire is spiraled through holes punched along the side of a stack of paper. Usually used for reports, proposals as well as manuals. Documents bound with coil have the ability to lay flat as well as can rotate 360 degrees. And called spiral binding as well.