Optical projection apparatus for image transfer type electrophotographic copiers

An optical projection apparatus for use in an image transfer type electrophotographic copier for projecting an optical image of an original document to a photosensitive drum which comprises,

• an image transmitter formed by a bundle of optical fibers of graded refractive indexes disposed obliquely relative to the original document to be copied;
• two prism-shaped reflecting members respectively disposed in facing relation to each end of the image transmitter, wherein both said prism-shaped reflecting members include a prism portion and a support portion integrally formed therewith;
• two support plates for retaining said image transmitter and said two prism-shaped reflecting members integrally so as to retain the support portions of said two prism-shaped reflecting members and said image transmitter therebetween;
• the optical image of the original document being projected through said optical projection apparatus wherein the image is at first reflected through the prism-shaped reflecting member located on the original document side, and projected through the image transmitter and further reflected through the prism-shaped reflecting member located on the photosensitive drum side, whereby the image is projected onto the peripheral surface of said photosensitive drum at a point remote from the top portion thereof and closest towards the image transfer portion.