240 the controller can recognize the scan module 240 as soon as being mounted on the carriage 210 when the scan module 240 is mounted on the carriage 210 the connector 241 of the scan module 240 is in electrical contact with the common fpc connector 236 so that scanning signals are transferred from the controller to the connector 241 of the scan module 240 through the common fpc connector 236 thereby scanning the document when an electric motor for the carriage 210 is driven the carriage 210 moves reciprocally along the guide shaft while the scan module 240 scans the document disposed on a base frame according to the present invention after the scanning is completed by the scan module 240 the carriage 210 having the scan module 240 and the ink cartridge 230 is moved to the capping section 310 this results in preventing the ink in the nozzles of the ink cartridge from being dried the ink head 130 of ink cartridge 230 comes in contact with the cap 330 at the capping section 310 to prevent the ink in the nozzles from being dried further since the scan module 240 is spaced at the predetermined distance a from the cap 330 the scan module 240 is prevented from being polluted by the cap 330 in another embodiment of the present invention at least one scan module 240 is securely mounted on the carriage 210 along with the plurality of the ink cartridges that is the scan module 240 can be permanently secured to the carriage 210 because unlike the ink cartridges it is not necessary to periodically change the scan module in the above case.