| 摘要 |
PURPOSE:To provide an image forming device which can emit accurately light from a light emitting diode element to a sensitive film through lenses and form a latent image of high image quality on the sensitive film. CONSTITUTION:An image forming device is disposed inside a transparent cylindrical body 6a coated with a sensitive film 66 on the outer surface, and emits light from inside the transparent cylindrical body 6a to the sensitive film 6b and forms a latent image on the sensitive film 6b. The device consists of a lens plate 2 on which a plurality of lenses 5 are disposed and supported in the straight line shape at the given intervals, a base plate 1 on which a number of pixel arrays 4 are disposed and placed in the straight line shape and a spacer for fixing combinedly the lens plate 2 and the base plate 1 in a manner of making respective lenses 5 and respective pixel arrays 4 corresponding one- to-one. The thermal expansivities of the lens plate 2, a base plate 1 and the spacer are -2-3X10<-6>/ deg.C in the temperature range of -30-100 deg.C. |
