Image forming apparatus and image forming and decoloring system

摘要

According to one embodiment, there is provided an image forming apparatus which forms an decolorable image and an non-decolorable image by fixing a toner image including a decolorable toner and a toner image including a non-decolorable toner or a medium. The decolorable toner has a first peak of a loss tangent tan δ at a temperature TE1, and the non-decolorable toner has a first peak of a loss tangent tan δ at a temperature TU1. A difference between the temperature TE1 and the temperature TU1 is within 20° C.

主权项

1. An image forming apparatus which forms a decolorable image and an non-decolorable image by fixing a toner image including a decolorable toner and a toner image including a non-decolorable toner on a medium, wherein:
the decolorable toner has a first peak of a loss tangent tan δ at a temperature TE1 and has a storage modulus of 1.0×104 at a temperature TE2, the non-decolorable toner has a first peak of the loss tangent tan 8 at a temperature TU1 and has the storage modulus of 1.0×104 at TU2, a difference between the temperature TE1 and the temperature TU1 is within 20° C., and a difference between the temperature TE2 and the temperature TU2 is within 55° C.