Patent ID: 8624949
Filing Date: 2014-01-07
Classification: B41J,G02B,G06K,H04N

Abstract:
1. A raster output scanner (ROS) for generating an image on a portion of a light-receiving medium traveling along a process path past the ROS, comprising: a plurality of light sources operative to generate a plurality of light outputs; a driver with a memory storing a plurality of beam delay values corresponding to individual ones of the plurality of light sources, the beam delay values set to compensate for a combined additive or multiplicative effect of wiper error and jitter error such that column alignment is achieved at an alignment location spaced from a center of scan (COS) location toward an end of scan location (EOS) along a fast scan range of operation of the ROS by generating a combined error curve or function along the fast scan range, wherein the beam delay values are set such that an area of the combined error curve or function is minimized along the fast scan range of operation of the ROS, the driver being operative to selectively actuate the plurality of light sources according to the corresponding beam delay values based on a stream of image data to produce a plurality of modulated light outputs; and a scanner that directs the modulated light outputs from the light sources toward a light-receiving medium along the fast scan direction to generate an image on at least a portion of the light-receiving medium.