Patent ID: 8760716

Claim:
An image forming apparatus comprising: a print processing unit configured to obtain a printing ratio of document data at a time of print execution of the document data and associate printing ratio data indicating the obtained printing ratio with the document data; and a printing ratio determination unit configured to identify the printing ratio of the document data from the printing ratio data associated with the document data and determine whether or not the identified printing ratio satisfies a specified condition, wherein: the document data is document data in a document box, the document box is configured to store the printing ratio of the document data as the printing ratio data, the print processing unit is configured to obtain the stored printing ratio at the time of print execution of the document data and associate one or a plurality of print setting items with the printing ratio data indicating the obtained printing ratio at the time of print execution of the document data, the printing ratio determination unit is configured to determine whether or not the printing ratio data corresponding to setting information matched with one or the plurality of setting values specified by the job execution request is stored, and if the printing of the document data has not been executed and the printing ratio data is not stored, the printing ratio determination unit is configured to execute an image processing that is a preprocessing of the printing on the document data to calculate the printing ratio and the print processing unit is configured to obtain the calculated printing ratio at the time of print execution of the document data.