| CPC G03G 21/1652 (2013.01) [G03G 15/0863 (2013.01); G03G 15/0865 (2013.01); G03G 21/181 (2013.01); G03G 21/1875 (2013.01)] | 16 Claims |

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1. A cartridge comprising:
a housing;
a storage medium having an electrical contact surface; and
a holder movable relative to the housing, the holder comprising:
a first holder member including the electrical contact surface; and
a second holder member engaging with the first holder member,
wherein the second holder member has a through-hole which penetrates the second holder member in a first direction crossing the electrical contact surface toward an engagement part of the second holder member engaging with the first holder member, and
wherein the through-hole is exposed outside of the cartridge.
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