Patent ID: 6072517
Filing Date: 2000-06-06
Classification: B41J,G09G,H04N

Abstract:
An active matrix xerographic light emitter array for exposing an image onto a photoreceptor, the photoreceptor moving past the array, the array comprising:a plurality of pixels arranged in a plurality of columns and a plurality of rows, the plurality of rows being arranged in a process direction of the photoreceptor, the photoreceptor advancing one pixel width in the process direction for one frame period, each of the pixels having an organic light emitting diode; anda plurality of data drivers transmitting a plurality of analog light emission signals to the plurality of pixels every successive frame period; anda plurality of gate drivers connected to both the plurality of pixels and the plurality of data drivers, the plurality of gate drivers advancing, between successive frame periods, each of the analog light emission signals down the columns synchronously with movement of the photoreceptor, such that all of the plurality of rows are successively rewritten with the analog light emission signals between successive frame periods and a light spot on the photoreceptor is successively exposed during each frame period in accordance with a value of the light emission signal transmitted during the frame period.