JP2007322490A5 - - Google Patents

Claims (6)

A secondary transfer portion having a heater for performing secondary transfer of the toner image to a recording medium fed so as to be in contact with the toner image carried on the intermediate transfer body, and for heating.
A plurality of fixing heaters, and a fixing unit that heats and fixes the toner image transferred to the recording medium in the secondary transfer unit,
The heating temperature at the secondary transfer unit is lower than the heating temperature of the fixing unit, and the length of the heater of the secondary transfer unit is longer than any of the heaters of the fixing heater. An image forming apparatus characterized by being made longer. The distance from the nip area exit of the nip formed at the secondary transfer section to the nip area entrance of the nip formed at the fixing section is shorter than the conveyance direction length of the smallest size recording medium that can be passed. The image forming apparatus according to claim 1. The image forming apparatus according to claim 1, wherein the heater of the secondary transfer unit is a single heater. 4. The image forming apparatus according to claim 1, wherein a heating temperature at the secondary transfer unit is not less than a room temperature and not more than a toner melting temperature. 5. 5. The image forming apparatus according to claim 1, wherein the intermediate transfer member is an endless belt base material, and the endless belt member has a surface layer whose outer peripheral surface is coated with a fluorine-based resin. The said secondary transfer part has a secondary transfer roller, and the said secondary transfer roller has the surface layer which coat | covered the fluororesin on the outer peripheral surface of a metal-barrel base | substrate. Image forming apparatus.