Image forming apparatus and control method therefor

A method of controlling an image forming apparatus having:

• image forming means for forming an image on the basis of print data and outputting the image;
• first print data generation means for generating the print data from original image data read by image reading means;
• and
• second print data generation means which generates the print data on the basis of printing data received from a device other than the image reading means, and can communicate with the first print data generation means, comprising:
• the communication step of generating original image data read by the image reading means, or correction data based on the original image data read by the image reading means and predetermined data, and transmitting the original image data or correction data to the second print data generation means;
• and
• the correction step of causing the second print data generation means to perform predetermined correction for subsequently received printing data or the print data generated based on printing data, on the basis of the original image data and predetermined data or the correction data transmitted in the communication step.

A storage medium which stores a control program for an image forming apparatus having:

• image forming means for forming an image on the basis of print data and outputting the image;
• first print data generation means for generating the print data from original image data read by image reading means;
• and
• second print data generation means which generates the print data on the basis of printing data received from a device other than the image reading means, and can communicate with the first print data generation means, comprising:
• a program code of the communication step of generating original image data read by the image reading means, or correction data based on the original image data read by the image reading means and predetermined data, and transmitting the original image data or correction data to the second print data generation means;
• and
• a program code of the correction step of causing the second print data generation means to perform predetermined correction for subsequently received printing data or the print data generated based on printing data, on the basis of the original image data and predetermined data or the correction data transmitted in the communication step.