Composite image recording apparatus

Photocopying – Contact printing – Light boxes

Patent

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Details

355244, 355246, 430 45, G03G 1508, G03G 1301

Patent

active

049376292

ABSTRACT:
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:

REFERENCES:
patent: 4124385 (1978-11-01), O'Horo
patent: 4238558 (1980-12-01), Ziolo
patent: 4245026 (1981-01-01), Ziolo
patent: 4416533 (1983-11-01), Tokunaga et al.
patent: 4539281 (1985-09-01), Tanaka et al.
patent: 4611901 (1986-09-01), Kohyama et al.

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