Belt frame for fixing device

摘要

A fixing device includes an endless belt, a heating plate, a pressure roller, a first belt guide and a second belt guide. The endless belt has a tubular shape and extends in a first direction. The heating plate is disposed inside the endless belt and extends in the first direction. The first belt guide guides an end of the endless belt in the first direction and includes an inner guide and a restriction portion to restrict movement of the endless belt in the first direction. The second belt guide faces the first belt guide in a second direction and extends from a vicinity of the heating plate to a vicinity of the inner guide along the inner peripheral surface of the endless belt. An end of the restriction portion in the second direction closer to the heating plate is located closer to the second belt guide than the inner guide.

主权项

1. A fixing device, comprising:
an endless belt having a tubular shape and extending in a first direction; a heating plate disposed inside the endless belt and extending in the first direction; a pressure roller contacting an outer peripheral surface of the endless belt such that the endless belt is disposed between the pressure roller and the heating plate; a first belt guide configured to guide an end of the endless belt in the first direction, the first belt guide including an inner guide disposed along a portion of an inner peripheral surface of the endless belt, and a restriction portion connected to the inner guide and disposed outside the endless belt in the first direction, the restriction portion configured to restrict movement of the endless belt in the first direction; and a second belt guide facing the first belt guide in a second direction in which the endless belt and the pressure roller face each other, the second belt guide being located at each end portion of the heating plate along the first direction and extending along the inner peripheral surface of the endless belt from a first position in which the heating plate is closer to the inner guide than a first end of the second belt guide is to the inner guide in the second direction to a second position in which a second end of the second belt guide is closer to the inner guide in the second direction than to the heating plate, and wherein an end of the restriction portion in the second direction closest to the heating plate is located closer to the second belt guide than the inner guide.