Patent ID: 7724272

Claim:
A print unit for transferring an image to a photosensitive medium, comprising: an intercepting member for intercepting light; a first plane light-emitting member for forming a first image by emitting light, provided on one side of said intercepting member; a second plane light-emitting member for forming a second image by emitting light, provided on the other side of said intercepting member; a control unit for controlling light-emission of said first and second plane light-emitting members, and transferring at least one or more of images formed by said first and second plane light-emitting members, to the photosensitive medium; and wherein said intercepting member includes a first liquid crystal shutter for transmitting or intercepting light selectively, and a first shutter control unit for transmitting light by opening said first liquid crystal shutter or intercepting light by closing said first liquid crystal shutter, and said control unit opens said first liquid crystal shutter by said first shutter control unit, and activates both of said first and second light-emitting members.