Patent ID: 6018357
Filing Date: 2000-01-25
Classification: G06K,H04N

Abstract:
A printer comprising:a light emitting body comprising a plurality of light emitting elements arranged in a first direction, said light emitting body having a predetermined size in a second direction substantially perpendicular to the first direction;a photosensitive body movable relative to said light emitting body and having a photosensitive surface to be sensitized by light emitted by the light emitting body, the photosensitive surface being moved relative to the light emitting body at a predetermined distance in the second direction, the first direction being orthogonal to the direction of relative movement of the photosensitive surface and parallel to the photosensitive surface; anda controller, operatively coupled to the light emitting body, for controlling light emission from the light emitting body such that the light emitting body emits light a predetermined number of times, the predetermined number of times being greater than one, at a predetermined period while the photosensitive surface moves a predetermined distance along the second direction relative to the light emitting body, said predetermined period being set based on a time required for moving the photosensitive surface along the second direction relative to the light emitting body,wherein said controller uses a strobe signal having first and second states to form overlapping light emission pulses in accordance with the predetermined size of the light emitting body in the second direction by activating light emission from the light emitting body in response to the first state of the strobe signal and deactivating light emission from the light emitting body in response to the second state of the strobe signal, resulting in a substantially flat energy distribution on the photosensitive surface.