Patent ID: 7712881

Claim:
An ink-cartridge attaching and detaching device for sliding an ink cartridge and mounting the ink cartridge on a main body of a recording apparatus, the ink-cartridge attaching and detaching device comprising: a cartridge holding unit configured to hold the ink cartridge by insertion of the ink cartridge by a first predetermined stroke; and a power transmitting and converting mechanism configured to ensure a pressing force required for mounting the ink cartridge by leverage by turning of a lever arm and to convert the turning of the lever arm into motion of a second predetermined stroke required for mounting the ink cartridge while held by the cartridge holding unit, wherein the cartridge holding unit includes: a slider configured to move in response to a power from the power transmitting and converting mechanism; an engagement member configured to engage with the slider, swing with respect to the slider, engage with the ink cartridge, hold the ink cartridge, and move in the mounting direction together with the slider; a first engagement unit configured to operate such that the slider and the engagement member directly engage with each other when the engagement member swings; and a second engagement unit configured to operate such that the slider and the engagement member directly engage with each other when the engagement member mounts the ink cartridge.