Apparatus and method of scanning light using an array of light sources

摘要

Apparatus comprising a two-dimensional array of light sources (40) and a scanning device (26) arranged to scan light (14) emitted from the light sources (40) onto a medium (10) to generate a plurality of scan lines (52) on the medium (10), the light sources (24 and scanning device (26) being arranged such that a plurality of light sources (24) can be used to generate each scan line (52) of the plurality of scan lines (52).

主权项

1. An apparatus comprising:
a two-dimensional array of light sources, each light source in the two-dimensional array producing at least three exposure levels; a scanning device arranged to scan light emitted from the light sources onto a medium to generate a plurality of scan lines on the medium; each scan line produced by scanning a plurality of light spots generated by the plurality of light sources onto the medium; the light sources and scanning device being arranged such that a composite exposure level for each pixel in a first scan line is a sum of exposure levels from each of a plurality of the light sources, each of the plurality of the light sources being driven by a separate data signal to allow selection of different composite exposure levels for different pixels in the first scan line.