Patent ID: 8046497

Claim:
An image forming apparatus including a communication section connected to a data processing apparatus through a communication line to perform image formation on the basis of data transmitted from the data processing apparatus through the communication section, the image forming apparatus comprising: a plurality of storage sections each of which has a different free storage capacity and a different access speed; and a control section to obtain, by decompression, data size information of a data-decompressed XPS file from the XPS file, which includes the data size information in a head of a file data frame and from which the data size information and file data are separately decompressed to obtain: a decompressed size value corresponding to the data size information of the decompressed XPS file; and decompressed file data; the XPS file being received from the data processing apparatus through the communication section, to select a storage section to store the file data of the data-decompressed XPS file from the plurality of storage sections on the basis of the data size information, to perform data decompression of the XPS file, and to allow the selected storage section to store the file data of the data-decompressed XPS file.