Technical Terms (Printing)
LPI (Lines Per Inch)
LPI stands for Lines Per Inch, a printing term that describes the fineness of halftone screens used to reproduce images. It measures how many rows of halftone dots fit into one inch. A higher LPI mean...
Halftone
Halftone is a way of turning photos or shaded artwork into tiny dots so they can be printed with solid ink. Printing presses can’t print smooth shades of gray or color directly, so halftones “tric...
Screen Angles
In offset printing, each ink color (cyan, magenta, yellow, black) is halftoned at a slightly different angle. This prevents the dots from stacking on top of each other in straight lines, which would c...
Moiré
Moiré is a visual distortion that looks like wavy lines, ripples, or interference across an image. It happens when two regular patterns overlap in a way that clashes. In printing, this often occurs w...
Rosette Pattern
It is a flower-like texture that appears when CMYK halftone dots overlap at different angles. Each color is set at its own angle, and together they form a repeating, stable pattern. To the naked eye i...