| 摘要 |
Some fixing devices include a nip member, an endless belt, a rotating member and a stay. The stay, in some arrangements, has a first supporting face. Additionally, the first supporting face includes a first downstream edge. The first downstream edge includes a first portion, a third portion, and a second portion. According to various aspects, the second portion is positioned between the first portion and the third portion. The second supporting face includes a second downstream edge. The second downstream edge has a fourth portion, a sixth portion, and a fifth portion. According to further aspects, the second portion and the fifth portion define a first distance while the first portion and the fourth portion define a second distance, and the third portion and the sixth portion define a third distance. The second distance and the third distance is longer than the first distance in some examples. |
| 主权项 |
1. A fixing device comprising:
a nip member; an endless belt having an inner peripheral surface and an outer peripheral surface, the inner peripheral surface being configured to be in sliding contact with the nip member in a sliding direction; a rotating member configured to nip the endless belt in cooperation with the nip member, and configured to constitute a nip region between the endless belt and the rotating member, the rotating member having an axis defining an axial direction; and a stay disposed opposite to the nip region with respect to the nip member and having a first supporting face configured to support the nip member and a second supporting face configured to support the nip member, the second supporting face being spaced apart from the first supporting face in the sliding direction and being disposed downstream of the first supporting face in the sliding direction, one of the first supporting face and the second supporting face being formed in an arcuate shape when viewed in a direction perpendicular to the axial direction and the sliding direction, and a remaining one of the first supporting face and the second supporting face having a portion parallel to the axial direction,
the first supporting face having a first upstream edge and a first downstream edge positioned downstream of the first upstream edge in the sliding direction, the first downstream edge having one side portion as a first portion, another side portion as a third portion, and a central portion as a second portion in the axial direction, the first portion being positioned opposite to the third portion in the axial direction, the second portion being positioned between the first portion and the third portion,the second supporting face having a second upstream edge and a second downstream edge positioned downstream of the second upstream edge in the sliding direction, the second downstream edge having one side portion as a fourth portion, another side portion as a sixth portion, and a central portion as a fifth portion in the axial direction, the fourth portion being positioned opposite to the sixth portion in the axial direction, the fifth portion being positioned between the fourth portion and the sixth portion, andthe second portion and the fifth portion defining a first distance therebetween in the sliding direction, the first portion and the fourth portion defining a second distance therebetween in the sliding direction, and the third portion and the sixth portion defining a third distance therebetween in the sliding direction, the second distance and the third distance being longer than the first distance. |
