higher than 70 u00b0 c the low temperature fusibility becomes insufficient because urea modified polyesters prone to stay on the surface of the toner base particles obtained even if having a low glass transition temperature the toner of the present invention exhibits better storage characteristics than well known polyester toners the glass transition temperature tg can be measured by differential scanning calorimeter dsc for the colorant any well known dye or pigment can be used for example carbon black nigrosine dye iron black naphthol yellow s hanza yellow 10g 5g g cadmium yellow yellow iron oxide ocher chrome yellow titanium yellow polyazo yellow oil yellow hanza yellow gr a rn r pigment yellow l benzidine yellow g gr permanent yellow ncg balkan fast yellow 5g r tartrazine lake quinoline yellow lake anthracene yellow bgl isoindolinone yellow red iron oxide minium lead vermilion cadmium red cadmium mercury red antimony vermilion permanent red 4r para red fire red p chloro o nitroaniline red risol fast scarlet g brilliant fast scarlet brilliant carmine bs permanent red f2r f4r frl frll f4rh fast scarlet vd vulcan fast rubine b brilliant scarlet g lithol rubine gx permanent red f5r brilliant carmine 6b pigment scarlet 3b bordeaux 5b toluidine maroon permanent bordeaux f2k helio bordeaux bl bordeaux 10b bon maroon light bon maroon medium eosine lake rhodamine lake b rhodamine lake y alizarin lake thioindigo red b thioindigo maroon oil red quinacridone red pyrazolone red polyazo red chrome vermilion benzidine orange perynone orange oil orange cobalt blue cerulean blue alkali blue lake peacock blue lake victoria blue lake non metallic phthalocyanine blue phthalocyanine blue fast.