Graphic arts printing plate production by a continuous jet drop printing with asymmetric heating drop deflection

A graphic arts printing apparatus includes a delivery channel for hydrophobic liquid; a source of pressurized hydrophobic liquid communicating with the delivery channel; a nozzle bore which opens into the delivery channel to establish a continuous flow of hydrophobic liquid in a stream; and a droplet generator which causes the stream to break up into a plurality of droplets at a position spaced from the stream generator. The droplet generator includes a heater having a selectively-actuated section associated with only a portion of the nozzle bore perimeter, whereby actuation of the heater section produces an asymmetric application of heat to the stream to control the direction of the stream between a print direction and a non-print direction.