| 摘要 |
<p>PURPOSE:To prevent the wrong attachment of a cartridge with comparatively simple constitution and also to open a movablecover automatically and surely at an opening part when the cartridge is attached normally, by adding a projection member which guides the cartridge to a housing when the cartridge is attached normally, and also sets the opening part at its open position. CONSTITUTION:When a cartridge is loaded in a wrong way, a top plate part 32b is supported by the lower projected edge parts 22a and 24a of the cartridge guide members 22 and 24, respectively. Then the cartridge is pushed inside along both members 22 and 24. Under such a condition, a guide groove part 33 formed to the side wall of a housing 32 is set at the side wall of a housing 32 is set at the side of an upper projected edge part 22b of the member 22. When a movable cover 34 reaches approximately the center part between both members 22 and 24, a projected hook part 26 of the member 24 has a contact with the cover 34 without interlocking the part 33. In such a way, the advance of the housing 32 is prevented.</p> |
