| 摘要 |
PURPOSE:To prevent light from leaking from the peripheral edge part of a buffer device by providing light shielding materials in the peripheral edge part of the buffer device covering a face to be exposed. CONSTITUTION:A light emitting part 5 is stored in side plates 12 of a copying device 1. A platen part 6 consists of a platen plate 61, a buffer device 62, etc., and light shielding materials 62a are provided in side face parts of the device 62 and a part which is deformed for pressuring to become the peripheral edge part of the bottom face. Thus, light is prevented from leaking from the peripheral edge part of the device 62. If light reflecting materials are used as light shielding materials, light is prevented from leaking to the external, and the exposure in the peripheral edge part of the face to be exposed is compensated to prevent the reduction of the quantity of exposure light due to light leakage. |
