发明名称 |
Perfecting press apparatus |
摘要 |
A perfecting press apparatus for forming images on both sides of a transfer medium. With respect to a transferring current Ipt of an image forming unit, current Ipc is made large which flows from a charge control instrument for controlling charge polarity of the toner on the transfer medium in the direction of the transfer medium. In particular, in the image forming unit causing retransfer, a de-charging light source is installed between the a developing device and a transferring device for canceling charges other than at a latent image part of an image carrier, so that the relationship between Ipt and Ipc is to be 3xIpc<=Ipc<=6xIpt, whereby the retransfer is suppressed to minimum for producing satisfied quality of image.
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申请公布号 |
US6694119(B2) |
申请公布日期 |
2004.02.17 |
申请号 |
US20030383062 |
申请日期 |
2003.03.07 |
申请人 |
HITACHI PRINTING SOLUTIONS, LTD. |
发明人 |
ROKUTANDA TAKASHI;OTOME YUKIO;MABUCHI HIROYUKI |
分类号 |
G03G15/00;G03G15/01;G03G15/16;G03G15/23;(IPC1-7):G03G15/16 |
主分类号 |
G03G15/00 |
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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