| 摘要 |
PURPOSE:To obtain a print less in image irregularity at all times by constituting an illumination lamp rotatably in a plane perpendicular to the optical axis. CONSTITUTION:The lamp 1 is fixed on a lamp base 18, which can rotate by 90 deg. around a filament along the arcuate hole 19a of an adjusting plate 19. Therefore, when a laterally long image is printed, an adjusting knob 20 is held to rotate the lamp base 18 so that the filament 1a also becomes laterally long, and consequently the filament 1a of the lamp 1 becomes laterally long in a laterally long lighting range, so that the print which is less in light quantity irregularity at image end parts is obtained. When a longitudinally print is obtained, on the other hand, the lamp base 18 is rotated so that the filament 1a is longitudinally long, and consequently the filament 1a becomes longitudinally long in a longitudinally long lighting range, thereby obtaining the print less in light quantity irregularity is obtained.
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