| US 7,546,073 B2 | ||
| Image forming apparatus having an intermediate transfer member wrapped around and driven by a photoconductor drum | ||
| Tomoya Saeki, Saitama (Japan); Noribumi Sato, Saitama (Japan); Iwao Kuriki, Saitama (Japan); Kazuhiro Saito, Saitama (Japan); and Toru Tanaka, Kashiwazaki (Japan) | ||
| Assigned to Fuji Xerox Co., Ltd., Tokyo (Japan) | ||
| Filed on Jul. 10, 2006, as Appl. No. 11/482,746. | ||
| Claims priority of application No. 2005-348235 (JP), filed on Dec. 01, 2005. | ||
| Prior Publication US 2007/0127953 A1, Jun. 07, 2007 | ||
| Int. Cl. G03G 15/01 (2006.01) | ||
| U.S. Cl. 399—302 | 12 Claims |
| 1. An image forming apparatus comprising:
a photoconductor drum;
an intermediate transfer belt that is wrapped around and stretched between the photoconductor drum and a plurality of support
rolls and is driven by the photoconductor drum; and
a contact member that contacts the intermediate transfer belt,
wherein the image forming apparatus satisfies the following expression (1)
2T(eμθ−1)/(eμθ+1)>F and T≤396.9 N (1),
wherein
μ represents a coefficient of friction between the photoconductor drum and the intermediate transfer belt,
T represents an initial tension of the intermediate transfer belt,
θ represents a wrap angle of the intermediate transfer belt on the photoconductor drum, and
F represent a load in a tangential direction applied from the contact member to the photoconductor drum via the intermediate
transfer belt.
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