| 摘要 |
A developing cartridge 12 includes a housing 43 which has a peripheral surface and two end faces formed on both sides of the peripheral surface, and a toner containing space 45 which is formed in the housing and which contains toner 47 therein. A communication hole 61 is formed on a periphery surface of the developing cartridge 12 . The communication hole 61 is sealed by a sticker 63 which has minute holes for allowing air to flow and preventing the toner 47 from passing through.
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