The electrostatic thruster is an electrostatic propulsion device which produces a force by making the grounded conductors and the charged conductor composing the device experience a stronger electric field on one side of the device than the other side. The sensing unit is adapted to automatically capture an image corresponding to the imaging surface upon detecting the covering member is in a closed configuration. In one embodiment, a method of generating light of adjustable color exiting a surface of a film is disclosed. The film transport transports the film to the reading position. The arrangement of holes allow sufficient current flow to replace that lost due to the dividing ribs.