Patent ID: 6380962
Filing Date: 2002-04-30
Classification: B41J

Abstract:
A ray applying device for applying electromagnetic rays to an object surface of a target object, said object surface extending two-dimensionally in main and sub scan directions, said ray applying device comprising:a flat surface light source, extending in said main scan direction, for emitting said electromagnetic rays; wherein said target object moves in said sub scan direction while said surface light source emits said electromagnetic rays; wherein said surface light source comprises at least one light-emitting display panel; and wherein said light-emitting display panel has a size substantially equal to a size of said object surface in said main scan direction; said light-emitting display panel includes a middle portion disposed substantially in a middle in said main scan direction, and two end portions between which said middle portion is disposed, and in which emission intensity of said electromagnetic rays is preset higher than in said middle portion, so as to provide said object surface with irradiance equal to irradiance with which said electromagnetic rays from said middle portion provides said object surface.