Patent ID: 6947166

Claim:
An apparatus provided with a print function for printing an image specified by print data from an external apparatus and a reading function for reading an original image, said apparatus comprising: print function realizing means having a first mode which utilizes a banding method and realizes the print function with a smaller memory capacity and a second mode which secures an area for storing bit image data of a page and realizes the print function with a relatively large memory capacity; discrimination means for discriminating whether the print of the image specified by the print data from the external apparatus is to be realized by the first mode or the second mode; and control means adapted, in a case that said discrimination means judges that the print of the image is to be realized by the first mode, to allow parallel execution of the print function and the reading function, and, in a case that the print of the image is to be realized by the second mode, to inhibit the parallel execution.