| 摘要 |
PROBLEM TO BE SOLVED: To mount a cartridge on a designed mounting position.SOLUTION: A printing material supply system includes a printer with a holder, and a cartridge 20 detachably mounted on the holder. The holder is equipped with a first device-side locking part 810 and a lever 800, the first device-side locking part 810 being formed as a portion of the lever 800. The cartridge 20 includes a first cartridge-side locking part 210 having a first locking surface 211 locking with the first device-side locking part 810. The first cartridge-side locking part 210 has an extension surface 218 for preventing a distal end 818 of the lever from mounting onto the first locking surface 211. |
