Laser Imprint
Laser printing is an electrostatic digital printing process. 
It produces high-quality text and graphics by repeatedly passing 
a laser beam back and forth over a negatively charged cylinder called 
a "drum" to define a differentially charged image. The drum then 
selectively collects electrically  charged powdered ink, and transfers the
 image to paper, which is then heated in order to permanently fuse the text, imagery, or both.