Abstract: A fusing apparatus for an image forming apparatus includes a rotatable fusing belt, a bushing to guide the rotation of the fusing belt, a ring member provided between the bushing and the fusing belt, and a guide member, provided on an upper portion of a sidewall of the bushing that faces the fusing belt to support an upper portion of the ring member. A gap is provided between a lower portion of the guide member and a lower portion of the sidewall to allow deflection of a lower portion of the ring member toward the sidewall.

Abstract: An Intermittently Decanted Extended Aeration (IDEA) process characterized in that an aeration period, a settling period and a decanting period are successively repeated in that order in a single reactor, and influent wastewater is transversely supplied at the bottom of the reactor and slowly diffused in the reactor while treated wastewater wich is intermittently discharged during the decanting period is provided. According to the process of the invention, wastewater can be efficiently treated without by-pass of wastewater under dry weather and wet weather conditions as well as stormy weather condition.