Patent ID: 8643903

Claim:
A printing apparatus comprising: a calibration execution portion to update concentration correction information for correcting an image concentration; a concentration correction information storage portion to store concentration correction information after update that is updated by execution of calibration and concentration correction information before update; a print image data generation portion to generate print image data using the concentration correction information, an analyzing portion to analyze print setting information according to print data; and a control portion to decide, when the calibration execution portion executes calibration while executing print image data generation processing based on the print setting information, whether the concentration correction information before update or the concentration correction information after update is used to generate print image data based on an analysis result of the analyzing portion; wherein the print image data generation portion generates print image data based on a decision result of the control portion, an operation portion to receive an instruction operation on whether printing is performed by giving priority to an image quality or printing is performed by giving priority to a speed, before execution of printing processing, and a print image data storage portion to store print image data for each page which is generated by the print image data generation portion in the order of generation are included, and the control portion selects, when the calibration execution portion executes calibration while executing print image data generation processing based on the print setting information, print image data to be newly generated using the concentration correction information after update from among print image data stored in the print image data storage portion based on an instruction content from the operation portion and an analysis result of print data analyzed by the analyzing portion, and the print image data generation portion generates print image data using the concentration correction information after update based on the selection.