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1. 发明授权

US07122768B2 Heating roller, image heating apparatus, and image forming apparatus 有权
标题翻译：加热辊，图像加热装置和图像形成装置
公开(公告)号：US07122768B2
公开(公告)日：2006-10-17
申请号：US10472410
申请日：2002-10-31
申请人： Masaru Imai , Masaaki Nakano , Syuuiti Watanabe , Keisuke Fujimoto , Masaomi Inoue , Noboru Katakabe
发明人： Masaru Imai , Masaaki Nakano , Syuuiti Watanabe , Keisuke Fujimoto , Masaomi Inoue , Noboru Katakabe
IPC分类号： H05B6/14 , G03G15/20
CPC分类号： G03G15/2057 , G03G15/2053 , G03G2215/2016 , G03G2215/2025 , G03G2215/2029 , G03G2215/2032 , H05B6/145
摘要： A heating roller (21) includes a heat generating layer (22) that generates heat by electromagnetic induction, a heat insulating layer (23), and a supporting layer (24), which are provided inwardly in this order. The supporting layer (24) is formed of a material having a specific resistance of 1×10−5 Ωm or higher. Therefore, even when the heat generating layer (22) has a thickness smaller than a skin depth, i.e. a thickness defined by a flow of an induction current, so that magnetic flux penetrates the heat generating layer (22) and even reaches the supporting layer (24), heat generation of the supporting layer (24) under an eddy current can be suppressed. Thus, the heat generating layer (22) can be decreased in thermal capacity, and heat generation of the supporting layer (24) is suppressed, so that only the heat generating layer (22) can be heated efficiently. As a result, a warm-up time can be reduced. Further, breakage by heat of, for example, bearings supporting the heating roller (21) can be prevented.
摘要翻译：加热辊（21）包括通过电磁感应产生热量的发热层（22），隔热层（23）和支撑层（24），这些按顺序向内设置。支撑层（24）由比电阻为1×10 -5Ω以上的材料形成。因此，即使当发热层（22）的厚度小于皮肤深度（即由感应电流的流动所限定的厚度）时，磁通量穿透发热层（22）甚至到达支撑层（24），可以抑制涡流下的支撑层（24）的发热。因此，发热层（22）的热容量可以降低，并且支撑层（24）的发热被抑制，使得仅能够有效地加热发热层（22）。结果，可以减少预热时间。此外，可以防止例如支撑加热辊（21）的轴承受热的破坏。

2. 发明授权

US07006781B2 Heating roller, heating belt, image heating device, and image forming device 有权
标题翻译：加热辊，加热带，图像加热装置和图像形成装置
公开(公告)号：US07006781B2
公开(公告)日：2006-02-28
申请号：US10469267
申请日：2002-11-08
申请人： Masaru Imai , Masakazu Mizusaki , Masaaki Nakano , Syuuiti Watanabe , Keisuke Fujimoto , Masaomi Inoue
发明人： Masaru Imai , Masakazu Mizusaki , Masaaki Nakano , Syuuiti Watanabe , Keisuke Fujimoto , Masaomi Inoue
IPC分类号： G03G15/20
CPC分类号： H05B6/145 , G03G15/2053 , G03G15/2064 , G03G2215/2016 , G03G2215/2029 , G03G2215/2032
摘要： A heating roller (21) includes a heat generating layer (22) that generates heat by electromagnetic induction, a heat insulating layer (23), and a supporting layer (24), which are provided inwardly in this order. The heat generating layer (22) is composed of at least two layers that are a first heat generating layer of a magnetic material and a second heat generating layer of a non-magnetic material. The first heat generating layer has a specific resistance higher than a specific resistance of the second heat generating layer and a thickness larger than a thickness of the second heat generating layer. This allows the second heat generating layer to function effectively as a heat generating part that generates heat by electromagnetic induction. Thus, compared with the case where the heat generating layer (22) is formed only of a single layer of a magnetic material, heat generation efficiency is increased, thereby allowing warm-up time to be reduced. Further, the heat generating layer (22) is heated intensively, so that heat generation of the supporting layer (24) is reduced, thereby allowing the prevention of breakage of, for example, bearings supporting the heating roller (21).
摘要翻译：加热辊（21）包括通过电磁感应产生热量的发热层（22），隔热层（23）和支撑层（24），这些按顺序向内设置。发热层（22）由作为磁性材料的第一发热层和非磁性材料的第二发热层的至少两层构成。第一发热层的电阻率高于第二发热层的比电阻，其厚度大于第二发热层的厚度。这允许第二发热层作为通过电磁感应产生热量的发热部件而有效地起作用。因此，与仅由单层磁性材料形成发热层（22）的情况相比，发热效率提高，从而能够减少预热时间。此外，发热层（22）被强烈地加热，使得支撑层（24）的发热减少，从而防止例如支撑加热辊（21）的轴承断裂。

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