Patent ID: 9304449
Filing Date: 2016-04-05
CPC Classification: G03G

Claim Text:
1. A printer comprising: a rotatable drum having an organic photoconductor (OPC) material on a surface of the rotatable drum, wherein portions of the surface of the rotatable drum are selectively discharged by selective application of light on the OPC material on the surface of the rotatable drum, the selective application of light on the OPC material causing a first set of the portions of the surface of the rotatable drum to be at a first voltage and a second set of the portions of the surface of the rotatable drum to be at a second voltage; a transfer roller configured to have a uniform voltage applied thereon by a printer controller; a first discharge roller and a second discharge roller each configured to have a ground voltage applied thereon by the printer controller; and a first erase roller and a second erase roller configured to have a fixed voltage differential applied between them by the printer controller, wherein the printer apparatus is configured to print to an electrically printable medium by moving the electrically printable medium: wherein the printer is configured to cause the electrically printable medium to move between the first discharge roller and the second discharge roller such that a residual charge is removed from the electrically printable medium to prevent the new visible content from being corrupted by the residual charge.