发明名称 |
Transfer and fixing device having specific nip ratio |
摘要 |
The present invention provides an image forming apparatus which adopts a simultaneous transfer and fixing method and is capable of obtaining a high-grade image which has high luster, a favorable balance of color and an excellent transparency. In an image forming apparatus provided with a transfer and fixing device which includes a heating roller and a pressure roller for transferring and fixing a toner image on an intermediate transfer body to a recording medium, the transferring and fixing operation is carried out using the heating roller and the pressure roller under a condition that the ratio a/b between the length a of a nip region N of the heating roller and the pressure roller in a direction A at the central portion of these rollers extending in a roller axial direction and the length b of the nip region N in the direction A at both ends of these rollers extending in the roller axial direction is set to be more than 0.8.
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申请公布号 |
US6226487(B1) |
申请公布日期 |
2001.05.01 |
申请号 |
US19990388357 |
申请日期 |
1999.09.01 |
申请人 |
FUJI XEROX CO., LTD. |
发明人 |
YAMASHITA TAKAYUKI;MATSUDA TSUKASA;FUKUDA YUICHI;YAMADA TETSUO |
分类号 |
G03G15/16;G03G15/20;(IPC1-7):G03G15/16 |
主分类号 |
G03G15/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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