Ink jet recording apparatus and control method therefor

A control method for controlling an ink jet recording apparatus for recording data using a recording head, the ink jet recording apparatus including:

• a work buffer means for storing first image data received from a host device;
• a record buffer means for storing second image data;
• a transfer buffer means for storing the second image data which is to be transferred to the recording head;
• and
• a buffer reading control table means for the work buffer means to which a flag corresponding data of the work buffer means is written,
• the control method comprising:
• a first direct memory access step, of reading the first image data from the work buffer means;
• a data converting step, of converting the first image data stored in the work buffer means into the second image data;
• a second direct memory access step, of transferring the second image data converted in the data converting step to the record buffer means;
• a third direct memory access step, of reading the second image data from the record buffer means, which is to be stored in the transfer buffer means;
• a latch step, of storing the second image data read in the third direct memory access step;
• and
• a direct memory access control step, of causing the first, second, and third direct memory access steps to be executed based on the flag when the image data stored in work buffer means is transferred to the transfer buffer means.