Patent ID: 8774685
Filing Date: 2014-07-08
Classification: G03G

Abstract:
1. A toner cartridge for an electrophotographic image forming device, comprising: a housing having a reservoir for storing toner; an outlet port positioned on the housing for transferring toner out of the toner cartridge; and a venting system including a first vent positioned to introduce air from outside the housing into the reservoir and a second vent positioned to introduce air received at the outlet port into the reservoir, the venting system maintaining an air pressure in the reservoir at the greater of a pressure of the air from outside the housing and the air received at the outlet port, wherein the first vent includes an inlet opening positioned on an outer side of a wall of the housing for receiving the air from outside the housing, an outlet opening positioned on an inner side of the wall of the housing for exiting the received air into the reservoir, and a one-way valve that permits airflow into the reservoir from the first vent and restricts toner from exiting the reservoir through the first vent.