Patent ID: 8630574
Filing Date: 2014-01-14
Classification: G03G

Abstract:
1. An image forming system comprising: a non-transparent image forming apparatus including, a first image forming station for forming a non-transparent toner image and for transferring the non-transparent toner image onto a recording material, first image heating means for heating a surface of the recording material which carries the toner image and which is discharged from said first image forming station, and first re-feeding means for re-feeding the recording material discharged from said first image heating means to said first image forming station with a reversed facing orientation; and a transparent image forming apparatus including, a second image forming station for forming a transparent toner image and for transferring the transparent toner image onto the recording material discharged from said first image heating means, second image heating means for heating a surface of the recording material discharged from said second image forming station, second re-feeding means for re-feeding the recording material from said second image heating means to said second image forming station with a reversed facing orientation, wherein formation of images as a combination of the non-transparent image and the transparent image is capable on both sides of the recording material by controlling said first re-feeding means and said second re-feeding means; said image forming system further comprising, first reversing means for feeding the recording material discharged from said first image heating means to said second image forming station with a reversed facing orientation, control means for controlling said first reversing means in accordance with a combination of a non-transparent image formation process and a transparent image formation process for both sides of recording material so that a number of heating operations to which outermost layers of final fixed images are subjected to by said first image heating means and by said second image heating means are the same.