公开(公告)号：WO2003043379A1

公开(公告)日：2003-05-22

申请号：PCT/JP2002/011636

申请日：2002-11-08

Applicant: 松下電器産業株式会社 ,  今井 勝 ,  水崎 正和 ,  中野 雅明 ,  渡辺 周一 ,  藤本 圭祐 ,  井上 雅臣

Inventor： 今井 勝 ,  水崎 正和 ,  中野 雅明 ,  渡辺 周一 ,  藤本 圭祐 ,  井上 雅臣

IPC: H05B6/14

CPC classification number: H05B6/145 ,  G03G15/2053 ,  G03G15/2064 ,  G03G2215/2016 ,  G03G2215/2029 ,  G03G2215/2032

Abstract: A heating roller (21), comprising a heating layer (22) heated by electromagnetic induction, an insulation layer (23), and a support layer (24) arranged from the outside to the inside of the heating roller in that order, the heating layer (22) further comprising at least two layers having a first heating layer formed of a magnetic material and a second heating layer formed of a nonmagnetic material, wherein the specific resistance of the first heating layer is higher than that of the second heating layer, and the wall thickness of the first heating layer is larger than that of the second heating layer, whereby the second heating layer is allowed to effectively act as a part heated by the electromagnetic induction, a heating efficiency can be increased more than that obtained when the heating layer (22) is formed of only one layer of the magnetic material to shorten a warm−up time and, since the heating layer (22) is concentrically heated, the support layer (24) is less heated to prevent bearings supporting the heating roller (21) from being damaged.

Abstract translation: 加热辊（21），其包括通过电磁感应加热的加热层（22），绝缘层（23）和从加热辊的外部至内部依次布置的支撑层（24），加热辊 层（22）还包括具有由磁性材料形成的第一加热层和由非磁性材料形成的第二加热层的至少两层，其中第一加热层的比电阻高于第二加热层的电阻率， 并且第一加热层的壁厚大于第二加热层的壁厚，从而允许第二加热层有效地用作通过电磁感应加热的部分，加热效率可以比在 加热层（22）仅由一层磁性材料形成，以缩短预热时间，并且由于加热层（22）被同心加热，所以支撑层（24）被较少加热以便预热 支撑加热辊（21）的nt轴承受损。