Imaging cartridge having a level indicator

摘要

An imaging substance cartridge includes a cartridge body that defines an imaging substance chamber. The chamber can contain an imaging substance, as for example toner or liquid ink. The cartridge includes an imaging substance level indication device. The imaging substance level indication device includes a level indication actuator supported in the cartridge body, and which is configured to displace a vapor volume within the imaging substance chamber. The imaging substance level indication device further includes an imaging substance level indicator supported by the cartridge body. The imaging substance level indicator is responsive to the displacement of vapor volume within the imaging substance chamber.