Special Features:

Tdesigned to reproduce blueprints; five fixed reduction/enlargement ratios: 50%, 65%, 100%, 129%, 200%, which may be interchanged for special requirements with variable reduction/enlargement selected from 45% to 200% in 0.1% increments; uses a variety of media including plain bond, polyester films and vellums; originals can be opaque or translucent; has capacity to handle originals/prints from 36 in. X 48 in. To 8.5 in. X 11 in., 99 copies each; includes electronic editing device where you can delete unwanted views; creates full-size drwgs from 35mm microfilm prints; prints are delivered quickly depending on size: five per minute for 36 in. X 48 in., seven per minute for 24 in. X 36 in., ten per minute for 18 in. X 24 in.; weighs 2668 lbs.

Properties:

A machine which applies a uniform positive charge to a selenium coated drum and then exposes the charged surface to the image of the original by projecting the image through a lens system. Light reflected off the original strikes the drum dissipating the static charge. The charge on the drum corresponding to the image of the original is retained. The drum is sprinkled with black powder that adheres to the charged area of the drum. The adhering powder on the drum transfers the image to the paper. The powder image is then fused to the paper by heat.