| 摘要 |
An image forming device includes a main casing, a cartridge accommodating portion, a detection unit and a determination unit. The cartridge accommodating portion is configured to detachably accommodate a first cartridge and a second cartridge that is able to be detachably combined with the first cartridge, the first cartridge being provided with a pressing member movable between a first position and a second position, the pressing member being in the first position when the second cartridge is removed from the first cartridge, the pressing member being in the second position when the second cartridge is combined with the first cartridge. The detection unit is provided on the main casing and is configured to perform non-contact position detection of the pressing member. The determination unit is configured not to start image forming operations until the detection unit detects that the pressing member is in the second position.
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