
{"publication_number": "US-5890044-A", "abstract": "an image forming apparatus such as a printer and a copying machine , employs a simultaneous transfer and fixing method to obtain a highly lustrous image of high image quality , free of uneven lusterand disordered pixels over the entire density area . assuming the outside diameter of the convex side roll to be r , the hardness of hardness test of durometer type a and the thickness of the surface layer of the concave side roll to be hr and dr respectively , the hardness of hardness test of durometer type a and the thickness of the surface layer of the toner image carrier in contact with the recording medium to be hb and db respectively , and the nip width to be n , the material and thickness of each surface layer for these two rolls and the intermediate transfer belt are selected so as to satisfy the following relationship : & gt ; 0 . 8566 ln \u00b7