Image forming apparatus, image processing method and image forming system

摘要

An image processor applies a RIP process to PDL data in order of the first through the n-th sheets to convert it into a scanning line type image data. An image forming section 5 receives the image data in sequence to form the image on the sheets. A controller 45 determines whether the RIP process is required for the image data of the n-th sheet or a rear cover. If no RIP process is required, the controller notifies the image forming section of non-RIP process for the n-th sheet. The RIP processed image data for the first through the n-lth sheets is applied to the image forming section. A waiting time for the image data transmission can be reduced. If the rear cover is blank, the high speed ring binding job can be established.