To prevent the exposure of a photosensitive recording medium and to protect the photosensitive recording medium against dust by surely light-shielding a gap between a cartridge main body and a shutter.
Light shielding auxiliary plates 23 and 24 fixed to the surface of the cartridge main body 11 are provided with roughly U-shaped auxiliary plate groove parts 23a and 24a. Also, the shutter 13 (shutter member 55) for opening and closing openings 18 and 19 has a roughly U-shaped shutter groove part 55d. In the auxiliary plate groove parts 23a and 24a and the shutter groove part 55d, when the shutter 13 is at a closing position for closing the openings 18 and 19, the end part on the side of the auxiliary plate groove parts 23a and 24a and the end part on the side of the shutter groove part 55d are mutually inserted into the shutter groove part 55d and the auxiliary plate groove parts 23a and 24a on the counterpart side to form a labyrinth part.
COPYRIGHT: (C)2007,JPO&INPIT
TAKAHASHI TOMOYUKI
Hironori Honda
Toshimitsu Ichikawa
Takeshi Takamatsu
Kiyozumi Yazawa
Next Patent: CARTRIDGE FOR PHOTOSENSITIVE RECORDING MEDIUM