Vertical print engine for electrophotographic apparatus

摘要

A print engine including a photosensitive belt which is an endless loop vertically mounted in the copier or printer housing. A photosensitive belt stretches over a pair of rollers such that the exterior of the surface of the belt defines a developing position for an electrostatic image in a substantial vertical plane. An exposure station in the copier housing focuses light on the developing position of the photosensitive belt forming the electrostatic image. Toner applied to the electrostatic image forms a developed image which is transferred to a second endless loop belt and subsequently communicated and fixed on an image receptor, such as paper. A second endless loop belt stretches between a first roller and a second roller. The first roller is vertically spaced-apart from the second roller. Each roller is horizontally and vertically off-set from one of the pair of rollers around which the photosensitive belt is stretched. The second belt is thereby oriented at an acute angle to the photosensitve belt to have an inside surface which wraps over one of the pair of rollers to define an arcuate contact between the photosensitive belt and the second belt. The photosensitive belt and the second belt rotate in the same relative direction at the arcuate contact to effect transfer of the developed image to the second belt.