Image forming apparatus for printing a banner page using decolorable or non-decolorable toner

An image forming method which is performed by an image forming apparatus comprising a printer unit comprising a first printer component that performs image formation using non-decolorable toner and a second printer component that performs the image formation using decolorable toner, wherein the first printer component uses a first sheet drawn from a first sheet containing unit or a second sheet containing unit, and the second printer component uses a second sheet drawn from the first sheet containing unit or the second sheet containing unit;

• the method, comprising:
• banner page controlling, by a device comprising a processor, in which banner page setting information is acquired which indicates setting conditions of a banner page which is inserted between one sheet and another sheet, on which an image is formed by a different job;
• image formation controlling, by the device, in which it is determined whether or not to form an image of the banner page by the printer unit, based on the banner page setting information;
• in response to determining, by the device, that a first image is to be formed, determining, based on user input, to use decolorable toner and further determining to use the first sheet containing unit or the second sheet containing unit, and printing the image of the banner page using decolorable developer;
• and
• in response to determining, by the device, that a second image is to be formed, determining, based on the user input, to use non-decolorable toner and further determining to use the first sheet containing unit or the second sheet containing unit, and printing the image of the banner page using non-decolorable developer.