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公开(公告)号:US4937629A
公开(公告)日:1990-06-26
申请号:US230745
申请日:1988-08-10
申请人: Kazuo Maruyama , Kiyoshi Horie , Tsuneo Naomi , Toshiro Yamamoto , Koji Adachi , Toru Okamoto , Takeshi Sumikawa , Nobumasa Furuya
发明人: Kazuo Maruyama , Kiyoshi Horie , Tsuneo Naomi , Toshiro Yamamoto , Koji Adachi , Toru Okamoto , Takeshi Sumikawa , Nobumasa Furuya
CPC分类号: G03G13/22 , G03G13/013 , G03G13/09 , G03G9/107
摘要: An image forming method of the present invention comprises: a first toner image formation process for forming a first toner image by forming, on a latent image carrier, a first latent image which corresponds to a first image and developing the first latent image by a first toner charged to one polarity through a development process selected from normal and reverse development process selected from normal and reverse development processes so as to correspond to the polarity of the first toner; a second toner image formation process for forming a second toner image by forming, on the latent image carrier, a second latent image which correspond to a second image and developing the second latent image by a second toner charged to the other polarity by the other development process while applying a developing bias; and a transfer treatment process for simultaneously transferring said first and second toner images to a transfer medium; wherein said developing bias VB2 satisfies the following equations:.vertline.VT1-VB2.vertline.>.vertline.VH2-VB2.vertline. . . . (1).vertline.VT1-VB2.vertline.>.vertline.VT1-VH2.vertline. . . . (2)where a surface potential of said first toner image is VT1, a background potential in said second toner image forming process is VH2, and the developing bias in said second toner image forming process is VB2.
摘要翻译: 本发明的图像形成方法包括:第一调色剂图像形成工艺,用于通过在潜像载体上形成与第一图像相对应的第一潜像并通过第一图像显影第一潜像来形成第一调色剂图像 调色剂通过选自正常和反向显影过程的正常和反向显影过程的显影过程充电至一个极性,以便对应于第一调色剂的极性; 第二调色剂图像形成工艺,用于通过在潜像载体上形成与第二图像相对应的第二潜像并通过另一显影剂以另一极性带电的第二调色剂显影第二潜像来形成第二调色剂图像 同时应用发展中的偏见; 以及用于将所述第一和第二调色剂图像同时转印到转印介质的转印处理过程; 其中所述显影偏压VB2满足以下等式:| VT1-VB2 ||VH2-VB2|。 。 。 (1)| VT1-VB2 |> | VT1-VH2 |。 。 。 (2)其中所述第一调色剂图像的表面电位为VT1,所述第二调色剂图像形成处理中的背景电位为VH2,并且所述第二调色剂图像形成处理中的显影偏压为VB2。