Computer based imagesetters create film with dot patterns. Holes for three ring binding are drilled, rather than punched. The standard hole punch used in most offices can only punch a few sheets at a time. However, a specialized drilling machine performs the same function on up to 1000 sheets in a single pass. A shiny coating on a paper is called a gloss finish.
Gloss coatings allow very little ink absorption and offer excellent color definition and contrast.
Line art and text require very clear edges and high contrast between areas where there is ink, and where there is not. However, photographs and drawings usually require varying degrees of ink density for accurate representation. A film that provides this variable density output is referred to as a halftone. In effect, a halftone is no different than a single color scan. However, common usage refers to a single color image as a halftone, while a process color image is called a separation.