| 摘要 |
An image forming apparatus producing images at a speed of from 500 to 1,700 mm/sec, including an image bearer; a charger; an irradiator; an image developer developing an electrostatic latent image with a developer including a toner including a binder resin and a colorant; a transferer; a cleaner; and a fixer, wherein the binder resin includes a crystalline polyester resin and an amorphous resin, wherein a peak ratio (W/R) of a specific peak height (W) of the crystalline polyester resin to a specific peak height (R) of the amorphous resin is from 0.050 to 0.555, and a toner transfer rate T (%) determined by the following formula (1) is from 75 to 100%: <?in-line-formulae description="In-line Formulae" end="lead"?>T(%)=(V-A)x100/V (1)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein V represents a toner volume (mg/cm<SUP>2</SUP>) of the toner image on the image bearer; and A represents a toner volume (mg/cm<SUP>2</SUP>) thereof remaining on the image bearer after transfer.
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