Patent ID: 8190076

Claim:
A control apparatus for controlling an image forming system, wherein the image forming system includes a transparent toner image forming device configured to form a transparent toner image on a sheet on which a color toner image has been fixed and includes a fixing device configured to fix the transparent toner image formed on the sheet, said control apparatus comprising: an image obtaining portion constructed to obtain image information designated by a user for forming the transparent toner image on part of the sheet; a color toner amount obtaining portion constructed to obtain a toner amount per unit area of the color toner image fixed on the sheet on which the transparent toner image is to be formed by the transparent toner forming device; a controller constructed to control the transparent toner image forming device such that, when the color toner image is fixed in an amount not less than a predetermined first amount per unit area in a first region designated so as not to form the transparent toner image on the basis of the image information, the transparent toner image is formed in a predetermined second amount per unit area in the first region, and such that the transparent toner image is formed in an amount not less than the predetermined second amount per unit area in a second region designated so as to form the transparent toner image on the basis of the image information.