发明名称 |
Tandem color image forming apparatus |
摘要 |
An image forming apparatus of the present invention disclosed is of the type sequentially transferring toner images from a plurality of photoconductive drums to a sheet being conveyed by an image transfer belt or an intermediate image transfer belt one above the other with bias applying members to thereby form a composite color image. Backup rollers, contacting the inside surface of the belt, each have volumetric resistivity of 10<9 >Omega.cm or above and ten-point mean surface roughness Rz of 6 mum or above.
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申请公布号 |
US2004109709(A1) |
申请公布日期 |
2004.06.10 |
申请号 |
US20030660699 |
申请日期 |
2003.09.12 |
申请人 |
ISHIBASHI HITOSHI;MARUTA TAKAYUKI;SAWAI YUUJI;YOSHIKAWA TAKAHIRO;TAKEHARA ATSUSHI |
发明人 |
ISHIBASHI HITOSHI;MARUTA TAKAYUKI;SAWAI YUUJI;YOSHIKAWA TAKAHIRO;TAKEHARA ATSUSHI |
分类号 |
G03G15/01;G03G15/16;(IPC1-7):G03G15/01 |
主分类号 |
G03G15/01 |
代理机构 |
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地址 |
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