A cartridge accommodating device for detachably accommodating a cartridge including an electrical interface, the cartridge accommodating device comprising: a holder defining an internal space therein and having an opening in communication with the internal space, the cartridge being configured to be inserted into the internal space in an insertion direction through the opening, the holder having a first surface that defines part of the internal space, the first surface extending in the insertion direction; and a connector provided at the holder, the connector comprising: a housing supported by the first surface; a conductive member comprising a leaf spring and including a contact electrically connectable to the electrical interface of the cartridge accommodated in the holder, the leaf spring having a fixed end fixed to the housing and a free end movable relative to the housing between a remote position and a proximate position, the remote position being closer to the first surface in a prescribed direction than the proximate position, the prescribed direction being orthogonal to the first surface; and a movable member movably supported by the housing and having at least a portion positioned upstream in the insertion direction relative to the leaf spring, the movable member being movable between a first position and a second position, the movable member being positioned closer to the first surface in the prescribed direction at the second position than at the first position, wherein the contact is positioned closer to the first surface in the prescribed direction while the free end is at the proximate position than while the free end is at the remote position, wherein the movable member is configured to be moved from the first position to the second position when the portion of the movable member is contacted from an upstream side thereof in the insertion direction by the cartridge during insertion of the cartridge into the internal space of the holder, wherein the free end is configured to be moved from the remote position to the proximate position in association with movement of the movable member from the first position to the second position, and characterized in that the fixed end of the leaf spring is positioned downstream in the insertion direction relative to the contact, and the free end is positioned upstream in the insertion direction relative to the contact. a holder defining an internal space therein and having an opening in communication with the internal space, the cartridge being configured to be inserted into the internal space in an insertion direction through the opening, the holder having a first surface that defines part of the internal space, the first surface extending in the insertion direction; and a connector provided at the holder, the connector comprising: a housing supported by the first surface; a conductive member comprising a leaf spring and including a contact electrically connectable to the electrical interface of the cartridge accommodated in the holder, the leaf spring having a fixed end fixed to the housing and a free end movable relative to the housing between a remote position and a proximate position, the remote position being closer to the first surface in a prescribed direction than the proximate position, the prescribed direction being orthogonal to the first surface; and a movable member movably supported by the housing and having at least a portion positioned upstream in the insertion direction relative to the leaf spring, the movable member being movable between a first position and a second position, the movable member being positioned closer to the first surface in the prescribed direction at the second position than at the first position, a housing supported by the first surface; a conductive member comprising a leaf spring and including a contact electrically connectable to the electrical interface of the cartridge accommodated in the holder, the leaf spring having a fixed end fixed to the housing and a free end movable relative to the housing between a remote position and a proximate position, the remote position being closer to the first surface in a prescribed direction than the proximate position, the prescribed direction being orthogonal to the first surface; and a movable member movably supported by the housing and having at least a portion positioned upstream in the insertion direction relative to the leaf spring, the movable member being movable between a first position and a second position, the movable member being positioned closer to the first surface in the prescribed direction at the second position than at the first position, wherein the contact is positioned closer to the first surface in the prescribed direction while the free end is at the proximate position than while the free end is at the remote position, wherein the movable member is configured to be moved from the first position to the second position when the portion of the movable member is contacted from an upstream side thereof in the insertion direction by the cartridge during insertion of the cartridge into the internal space of the holder, wherein the free end is configured to be moved from the remote position to the proximate position in association with movement of the movable member from the first position to the second position, and characterized in that the fixed end of the leaf spring is positioned downstream in the insertion direction relative to the contact, and the free end is positioned upstream in the insertion direction relative to the contact.