| 摘要 |
PROBLEM TO BE SOLVED: To use a toner cartridge in common for respective colors. SOLUTION: Tower cartridges 26a, 26b, 26c and 26d to supply developing means 25a, 25b, 25c and 25d with toner have a toner cartridge lower housing fixed at a toner cartridge upper housing and forming a toner storing space with the toner cartridge upper housing, a shaft which is freely rotatably attached so as to be projected outside from an opening part formed at the toner cartridge lower housing and in which a stirring member to stir stored toner is fixed at the inside of toner storing space and a shutter 21 that is provided at the toner cartridge lower housing and by which a toner supply hole communicating with the developing means 25a, 25b, 25c and 25d is opened and closed only in the state of being attached to the developing means 25a, 25b, 25c and 25d and the toner is supplied to the developing means 25a, 25b, 25c and 25d by opening the toner supply hole. |
