Photosensitive belt cartridge of a liquid electrophotographic printer

Abstract

A photosensitive belt cartridge includes a cartridge body substantially in the shape of an ovoid whose one end is open to receive the photosensitive belt in an endless track thereto. A plurality of spring plates, whose respective ends are fixed on ends of inner wall of the cartridge body, are arranged on the inner wall of the cartridge body along the endless track of the photosensitive belt at certain intervals, for supporting the photosensitive belt in cooperation with the inner wall of the cartridge body. An inner cover is used which is disposed at an open portion of the cartridge body for supporting edges of the photosensitive belt, and also for supporting the ends of the plurality of spring plates, for preventing partial loosening of the photosensitive belt. Further, the cartridge body includes a guiding rail formed on the upper surface, which has a pair of outwardly-bent locking ribs which are slidably fit into the advancing rail of the belt unit. The inner cover slides into the cartridge body when the inner cover is advanced into the belt unit. Accordingly, since the structure is simplified and the number of parts is reduced, the assembling time and cost can be greatly reduced while manufacturing can be more profitable. Further, the photosensitive belt cartridge is easy to handle, and the photosensitive belt thereof is protected from any possible damage.