Hickeys are foreign matter which sticks to plates, blankets, or rollers, and shows up as a black spot with a white halo in the printed image. Hickeys are generally caused by matter in the ink or paper adhering to the plate or blanket.
In offset printing, spots or imperfections in the printing due to dirt on press, dust or paper particles, etc.
Spots or imperfections in the printing process caused by dirt on the press, dried ink skin, paper particles from recycled papers, etc. At BOPI, "hickey-pickers" are installed on our equipment to help minimize hickey problems. On our 6-color MAN Roland presses, we use the delta-dampening system virtually eliminating hickeys.
In offset, spots or imperfections in the printed image traceable to such things as dirt on the press, dried ink skin, paper particles, dust, etc.
In printing (offset), spots or imperfections caused by dirt or other particles on the printing plate.
In offset lithography, spots or imperfection in the printing due to contamination on the press, such as paper particles, dried ink spots etc.
In offset printing, spots in the printed piece caused by extraneous material, such as dirt and paper particles.
In offset lithography, spots or imperfections in the printing due to dirt on the press, dried ink skin, paper particles, etc.
An irregularity in the ink coverage of a printed area. Hickeys are caused by paper or pressroom dust, dirt, or pick out on the printing blanket, all of which prevents the ink from adhering to the paper surface aka donut, fisheye, bull's-eye.