Patent ID: 8220890

Claim:
An inkjet printer comprising: a plurality of ink cartridges each comprising an ink containing portion which contains an ink, a first joint portion through which the ink contained in the ink containing portion is caused to flow out, and a storage medium stored with information on the ink contained in the ink containing portion; a holder portion comprising a holding member which removably holds the ink cartridges in predetermined positions, individually, a plurality of second joint portions spaced from the respective first joint portions of the ink cartridges held in the predetermined positions and disposed corresponding individually to the ink cartridges held by the holding member, and a plurality of read portions which are disposed corresponding individually to the ink cartridges held by the holding member and which read the respective storage media of the ink cartridges held in the predetermined positions; a drive unit which moves the second joint portions in such a direction that the second joint portions are connected individually to respective first joint portions of the corresponding ink cartridges; and a control unit which controls drive of the drive unit based on information read by the read portions, the control unit being configured to start driving the drive unit after determining that all pieces of the information read individually by the read portions are appropriate.