Image forming apparatus and image forming method

Abstract

When copying an object that has faded markings of color fadable toner and is printed with the color fadable toner, a threshold value changing key is displayed on a liquid crystal display of an operation panel to be pressed down. A main CPU sets a threshold value 1 a and a threshold value 2 a in an image processing unit upon detecting the threshold value changing key displayed on the liquid crystal display of the operation panel via a touch panel. The image processing unit eliminates a background image by using the set threshold value 1 a and threshold value 2 a , thereby providing dark printing with an excellent image.

1 . An image forming apparatus comprising:
 reading means for reading an image on an object;   image processing means for processing an image read by the reading means;   storage means for storing in advance threshold information for use in the image processing of the image processing means;   instructing means for instructing the threshold information for use in the image processing of the image processing means; and   control means for, when the threshold information is instructed by the instructing means, controlling to read the instructed threshold information from the storage means and to set the information in the image processing means.