Blanket Cylinder: The part of an offset lithographic printing press containing a rubber blanket to which the inked image is transferred from the plate, and which then transfers the inked image to the paper or other substrate.
Undercut: refers to the reduction of the size of an image due to light traveling beneath the film positive.
Gutter: The gutter is an extra margin intended to allow space for binding.
Gear: Gear marks in flexographic printing appear as alternating linear areas of light and dark running perpendicular to the web direction on your press.
Blanket: A synthetic rubber mat used in offset lithography to transfer—or \"offset\"—an image from a metal plate to the paper or other substrate. It is the use of a blanket that gives offset lithography its name.
Plate metals: Offset printing works by transferring an image onto a metal sheet known as printing plates through a photomechanical or photochemical process.
Skeleton Wheel: Alternate term for a delivery cylinder, used in an offset printing press, especially such a cylinder containing skeleton wheels.
Star Wheel: Star Wheels on an Epson inkjet printer. The sit at the end of the paper path, above where the paper exits the printer.
Gripper: The metal fingers on a printing press that hold the paper as it passes through the press.
Oleophilic: A quality of certain papers, components of paper, or the image areas of lithographic printing plates that causes them to have an affinity for oils and oilbased inks.