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发明授权
CN101515153B 定影装置和图像形成装置 有权

定影装置和图像形成装置
摘要：
本发明涉及定影装置和图像形成装置，加热辊(71)和用于驱动加热辊(71)的定影齿轮(220)，被同心配置，通过形成于定影齿轮(220)的键(222)插入到形成于加热辊(71)的键槽(221)而连结。将该键槽(221)形成为容许键(222)在沿着加热辊(71)的旋转方向的方向上移动。例如，在加热辊(71)的一方侧旋转轴(200)的自由端部，以沿着加热辊(71)的旋转方向延伸的方式形成有开口，由此形成键槽(221)。
摘要（英）：

The invention relates to a fixing device and image forming apparatus. A heat roller (71) and a fixing gear (22) for rotating the heat roller (71) are arranged concentrically, and coupled to each other by inserting a key (222) formed in the fixing gear (220) into a keyway (221) formed in the heat roller (71). The keyway (221) is designed such that the key (222) is allowed to move along a directionin which the heat roller (71) is rotated. For example, the keyway (221) is formed by notching a free end of a one-side rotary shaft (200) of the heat roller (71) so as to extend along the direction in which the heat roller (71) is rotated.

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