Patent ID: 8243348

Claim:
An image processing apparatus to which a scanner unit that reads an image of an original and either one of a color plotter unit that records a color image and a black-and-white plotter unit that records a black-and-white image are configured to be connected, the image processing apparatus comprising: a scanner-characteristic correcting unit that converts image data read by the scanner unit into normalized image data to compensate for a characteristic of the scanner unit; a first image processing unit that applies a first image processing on the normalized image data to generate image data to be output; a color determining unit that determines whether the normalized image data is color image data or black-and-white image data; and an attaching and removing unit that can attach and remove a controller image processing unit that applies a second image processing on the normalized image data to generate image data to be output, wherein when the black-and-white plotter unit is connected to the image processing apparatus and the controller image processing unit is not attached, the first image processing unit generates binary image data of the image data by applying the first image processing on the normalized image data before a result of color determination of the image data by the color determining unit is output.