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1. US20070014601 - Fixing device

官庁 アメリカ合衆国
出願番号 10575356
出願日 11.04.2006
公開番号 20070014601
公開日 18.01.2007
特許番号 7433639
特許付与日 07.10.2008
公報種別 B2
IPC
G03G 15/20
G物理学
03写真;映画;光波以外の波を使用する類似技術;電子写真;ホログラフイ
Gエレクトログラフィー;電子写真;マグネトグラフィー
15帯電像を用いる電子写真法用の装置
20定着装置,例.熱の使用により
H05B 6/14
H電気
05他に分類されない電気技術
B電気加熱;他に分類されない電気照明
6電界,磁界または電磁界による加熱
02誘導加熱
10特殊な応用のための炉以外の誘導加熱装置
14器具,例.ノズル,ローラー,カレンダー
CPC
G03G 15/2064
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
15Apparatus for electrographic processes using a charge pattern
20for fixing, e.g. by using heat
2003using heat
2014using contact heat
2064combined with pressure
H05B 6/145
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
6Heating by electric, magnetic, or electromagnetic fields
02Induction heating
10Induction heating apparatus, other than furnaces, for specific applications
14Tools, e.g. nozzles, rollers, calenders
145Heated rollers
出願人 Matsushita Electric Industrial Co., Ltd.
発明者 Yasuda Akihiro
Katakabe Noboru
Tajima Noriyuki
Fujimoto Keisuke
Imai Masaru
代理人 Greenblum &; Bernstein, P.L.C.
優先権情報 2003358024 17.10.2003 JP
2003358330 17.10.2003 JP
2004155165 25.05.2004 JP
発明の名称
(EN) Fixing device
要約
(EN)

In a fixing apparatus using an induction heating type of heating apparatus, there are provided an excitation apparatus that generates magnetic flux, an opposed core located opposite the excitation apparatus, a fixing belt that is induction-heated by the aforementioned magnetic flux, and magnetism masking elements that block magnetic paths corresponding to paper non-passage areas of fixing belt between the excitation apparatus and the opposed core. By blocking magnetic paths between the excitation apparatus and the opposed core by the magnetism masking elements, magnetic flux that induction-heats the fixing belt is effectively masked, and an excessive rise in temperature of paper non-passage areas of fixing belt is prevented.