Electrostatic Printing Mechanism
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
An electrostatic printing mechanism is illustrated in Fig. 1 including a drum 1 that rotates at 30 revolutions per second. Drum 1 includes at least one spiral groove 2 therein that winds 360 degrees around drum 1. A plurality of styli 3 are mounted in close proximity to spiral 2 to permit electric charge to pass from spiral 2 onto one end of the individual styli and onto the paper (not shown) which is proximate to the other ends of the styli 3. As drum 1 rotates with appropriate timing, spiral 2 addresses each of styli 3 individually so that a dot pattern can be produced on the paper.