TONER CARTRIDGE AND VENTILATION PLUG FOR TONER CARTRIDGE

摘要

PROBLEM TO BE SOLVED: To provide a toner cartridge capable of allowing air to escape outside while blocking toners and a plug for the toner cartridge. SOLUTION: This hopper plug dissipates the accumulation of an air pressure to induce toner leakage to the outside. The one side of the plug has a series of inlet openings 491 communicating with the inside of a hopper. The air which can contain some of toner particles pass these openings and enters a first chamber 507. This first chamber has an outlet hole 499 not facing the inlet openings. The air passing the outlet of the first chamber enters a second chamber 509. This second chamber has an outlet hole 495 which is arranged at the opposite end and does not face this hole. A third chamber 511 faces a mat-like toner filter 501 reaching the outlet hole 503.