Patent ID: 7891771

Claim:
A connector holder unit that is formed separately from a carriage capable of housing an ink cartridge and can be attached to the inside of the carriage, the connector holder unit comprising: a connector holder; a connector having a plurality of contact arms that is installed to the connector holder; and a circuit substrate having a plurality of conductive connection portions that is installed to the connector holder, wherein contact terminals of the plurality of contact arms of the connector are configured to elastically contact the conductive connection portions of the circuit substrate and conductive connection portions of the ink cartridge so as to electrically conduct between the circuit substrate and the ink cartridge when the connector holder unit is attached to the carriage, wherein the connector holder includes a support portion supporting a housing, wherein the housing includes a supported portion supported by the support portion, wherein a clearance that enables the housing to move with respect to the connector holder unit is formed between the support portion of the connector holder and the supported portion of the housing, and wherein the circuit substrate has a configuration in which the circuit substrate is pivoted about one side between upper and lower sides of the circuit substrate in a status that the side of the circuit substrate is supported by a position determining portion of the connector and the other side is approached to the connector holder for being engaged with the connector holder.