Patent ID: 8547410
Filing Date: 2013-10-01
Classification: B41J,G03H

Abstract:
1. An exposure device comprising: a plurality of light emitting elements provided on a substrate; a plurality of hologram elements being two-dimensionally arranged and multiplexing-recorded in correspondence with the plurality of light emitting elements, respectively, such that, when the plurality of light emitting elements are made to emit light in a recording layer arranged on the substrate, a plurality of condensing points having light components emitted from two or more light emitting elements and condensed on one point, is formed, and a condensing point row is formed that extends in a predetermined direction on the face to be exposed; and a driving unit that drives the plurality of light emitting elements, respectively, wherein the hologram elements overlap each other in a first direction but do not overlap each other in a second direction substantially perpendicular to the first direction.