Securing Medium to Transfer Drum in Electrophotographic Printer
Original Publication Date: 1985-Feb-01
Included in the Prior Art Database: 2005-Feb-18
To secure a transfer medium, e.g., paper, to the transfer drum in an electrophotographic printer, the paper is mounted to a grounded transfer drum by means of an electrostatic charge in an area of dielectric material deposited in bands around the drum. The dielectric is charged by a corona, located just above the paper gate/aligner, in close proximity to the transfer drum. The dielectric can be charged either negatively or positively, obtaining the same result. When the paper is fed onto the transfer drum, the E field near the edge of the dielectric strips will attract the paper. The attractive force is further enhanced by the E field over the dielectric strip, collecting oppositely charged ions from the air over the paper.