Patent ID: 7303245

Claim:
An inkjet printing apparatus capable of performing both a one-directional and a bi-directional printing modes by scanning a carriage at forward and backward directions on a recording medium, comprising: non-volatile storage means for storing a correction value and information designating whether correction is performed or not; correction means for performing the correction in accordance with the correction value; printing means for performing printing in accordance with a print command from a host device; receiving means for receiving a request from the host device; transfer means for transferring the correction value and the information to the host device based on the request; and control means for controlling, in case of the bi-directional printing mode, the transfer means to transfer the correction value and the information to the host device when the receiving means receives the request from the host device, the correction means to perform the correction when the receiving means receives a correction command from the host device, and the printing means to perform the bi-directional printing, and for controlling, in case of a one-directional printing mode, the printing means to perform the one-directional printing when received the print command from the host device without transferring the correction value and the information to the host device when the receiving means receives the request from the host device and without performing the correction when the receiving means receives a correction command from the host device.