| 摘要 |
An image forming method, comprising passing a toner image-bearing sheet through a nip defined between two rollers including a heater roller to fix the toner image on the sheet, wherein the toner image is formed from a toner comprising a binder resin, and a colorant, wherein the toner image before the passage through the nip has a toner volume V 1 and a toner image area S 1 , wherein the toner image after the passage through the nip has a toner volume V 2 and a toner image area S 2 , and wherein a volume change Vt and an area change St defined by the formulas shown below are 30% or less and 20% or less, respectively: <?in-line-formulae description="In-line Formulae" end="lead"?>Vt(%)=(V 1- V 2 )/V 1x100 <?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>St(%)=(S 2- S 2 )/S 1x100. <?in-line-formulae description="In-line Formulae" end="tail"?> Alternatively, the toner image before the passage through the nip has a surface roughness of 2.5 mum or less.
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