FIXING DEVICE

摘要

A fixing device includes: a non-contact heating portion that includes at least one non-contact heating unit which heats a toner image on a sheet; and a pressurizing and heating unit that is provided downstream in a sheet transport direction with respect to the non-contact heating portion and that pressurizes and heats the toner image. A time from a first point of time when the toner image reaches a toner melting temperature by heating of the non-contact heating portion to a second point of time when the toner image enters the pressurizing and heating unit is set equal to or more than a predetermined time. The predetermined time is a time when a ratio between the weight of the toner in the toner image before the entrance and the sum of the weight of the toner and the weight of the carrier liquid is equal to or more than 70%.

主权项

1. A fixing device that fixes, to a sheet, a toner image developed with a wet developer containing a toner and a carrier liquid, the fixing device comprising:
a non-contact heating portion that includes at least one non-contact heating unit which heats the toner image on the sheet in a non-contact manner; and a pressurizing and heating unit that is provided on a downstream side in a sheet transport direction with respect to the non-contact heating portion and that pressurizes and heats the toner image on the sheet, wherein a time elapsed since the toner image reached a toner melting temperature by heating of the non-contact heating portion until the toner image enters the pressurizing and heating unit is a time when a ratio between a weight of the toner in the toner image before the entrance and a sum of the weight of the toner and the weight of the carrier liquid is equal to or more than 70%.