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1. US20060237417 - Heating device and image forming device

官庁
アメリカ合衆国
出願番号 10567791
出願日 09.02.2006
公開番号 20060237417
公開日 26.10.2006
特許番号 7199332
特許付与日 03.04.2007
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 3/00
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
3抵抗加熱
H05B 3/02
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
3抵抗加熱
02細部
CPC
G03G 15/2053
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
2053Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
G03G 2215/2006
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
2215Apparatus for electrophotographic processes
20Details of the fixing device or porcess
2003Structural features of the fixing device
2006Plurality of separate fixing areas
H05B 3/0095
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
3Ohmic-resistance heating
0095Heating devices in the form of rollers
出願人 Sharp Kabushiki Kaisha
発明者 Kagawa Toshiaki
Kida Hiroshi
Yamanaka Takashi
Mitsuoka Tetsunori
代理人 Birch, Stewart, Kolasch & Birch, LLP
優先権情報 2003292501 12.08.2003 JP
発明の名称
(EN) Heating device and image forming device
要約
(EN)

Within a fixing roller (231) are disposed a main heater lamp (234a) for heating a central portion of the fixing roller and a sub-heater lamp (235a) for heating opposite end portions of the fixing roller. MRnh, SRnh and ΣRnh satisfy the formula (1) or (2):ΣRnh≧30.5·Ln(Ht)+382  formula (1)MRnh≦−21.9·Ln(Ht)−198,  formula (2)where MRnh is a mean value of heat distribution in a no-heat generating section of the main heater lamp; SRnh is a mean value of heat distribution in the a no-heat generating section of the sub-heater lamp; ΣRnh is the sum total of these mean values; and Ht=vp/(Mh·λ) where vp is a fixing speed (m/s), Mh a heat capacity per unit length of the heating member (J/(° C.·m)) and λ a heat conductivity of a material forming the heating member (W/(m·° C.)).

他の公開
US2006237417