Patent ID: 8606132
Filing Date: 2013-12-10
Classification: B41J

Abstract:
1. An image forming apparatus in which four developing units can be provided, comprising: a developing unit that contains an invisible toner which can hardly be observed under visible light; a developing unit that contains a visible toner of black; a developing unit that contains a visible toner of a specific color which is a chromatic color; a developing unit that contains a gloss adding toner for adding gloss to an image, a first image processor configured to create print data for the visible toner of black and print data for the visible toner of the specific color with use of functions of full-color image processing for creating, based on image data of a document image, print data for respective visible toners of black, yellow, magenta, and cyan; a second image processor configured to create print data for the invisible toner on basis of image data of an additional information image, wherein the second image processor is separate from the first image processor; a data creator configured to create print data for the gloss adding toner which print data is for forming a toner image of the gloss adding toner on an entire surface of a recording sheet; and an image forming section that forms toner images according to the image data of the document image with use of the print data for the visible toners which print data are created in the first image processor, forms a toner image according to the image data of the additional information with use of the print data for the invisible toner which print data is created in the second image processor, forms an image on a recording sheet from the toner images thus formed, and forms a toner image according to the print data for the gloss adding toner with use of the print data for the gloss adding toner created in the data creator, the developing units being disposed so that the toner image that is formed with use of the gloss adding toner is located at a top layer after transfer onto the recording sheet is completed.