| 摘要 |
PURPOSE:To prevent nonuniform printing or reduction in the printing speed of a film by employing, in addition to a lamp cooling air, a 2nd air passage normal to the lamp cooling air passage and parallel to a light controlling means, and further a partition wall separating a lamp housing into an air supply side and an air discharge side. CONSTITUTION:Air sent out to a manifold 10 flows out horizontally via a ventilation hole 33 from the tip of a nozzle 32 between a metallic mesh 5 and the lower surface of a lens 16. Since a partition wall 34 divides a lamp housing 15 into an air supply chamber 35 and an air discharge chamber 36, the air in the discharge chamber 36 heated with a magnetron 1 or with the an electrode- less lamp 8 is quickly discharged from an air discharge port 18 out of the lamp housing 15. As a result, a small amount of evaporated components of developer solution, even if they enter the lamp housing 15, are quickly discharged out of the lamp housing 15, and therefore, chemical reaction is not accelerated with the high temperature or ultraviolet rays of the electrode-less lamp 8, and milky-white fine powder is not produced. As a result, nonuniform printing or printing speed reduction of a film is prevented. |
