System and method for electrophotographic image reproduction

摘要

A system for use in image reproduction, said system comprising at least a first light emitting unit (11) and a second light emitting unit (12); said first light emitting unit comprising a first cooling means (21) arranged for cooling said first light emitting unit; said second light emitting unit comprising a second cooling means (22) arranged for cooling said second light emitting unit independently of said first light emitting unit; said first light emitting unit having a first elongate emitting area; said second light emitting unit having a second elongate emitting area; a control unit (40) configured for controlling the cooling of at least one of said first cooling means (21) and said second cooling means (22) such that at least one of said first elongate emitting area and said second elongate emitting area, respectively, has a desired length.