Pneumatic delivery system for liquid toner hard copy apparatus

摘要

A pneumatically powered toner delivery system for a hard copy machine is disclosed which is particularly adaptable to color printing and plotting in which liquid toner is used to produce electrophotographic images. A diaphragm pump is connected by a controllable rotary valve (or a manifold) to each toner reservoir of the system. Pneumatic pressure is selectively applied to the cartridges. The cartridges are connected to respective developer subsystems where toner of a particular color under pneumatic pressure from a reservoir is delivered to a developer subsystem for transfer to a photoconductor bearing a latent image.