G PHYSICS
G03 PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03G ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
G03G15/00 Apparatus for electrographic processes using a charge pattern
G03G15/08 using a solid developer, e.g. powder developer
G03G15/0822 Arrangements for preparing, mixing, supplying or dispensing developer
G03G15/0865 Arrangements for supplying new developer
G03G15/0867 cylindrical developer cartridges, e.g. toner bottles for the developer replenishing opening
G03G15/0868 Toner cartridges fulfilling a continuous function within the electrographic apparatus during the use of the supplied developer material, e.g. toner discharge on demand, storing residual toner, acting as an active closure for the developer replenishing opening