Image-wise toner layer charging via air breakdown for image deve

Details Image-wise toner layer charging via air breakdown for image deve Image-wise toner layer charging via air breakdown for image deve

1997-06-27

1999-08-10

Pendegrass, Joan

Electrophotography

Image formation

399133, 399154, 430 48, G03G 1500, G03G 1300

Patent

active

059372435

ABSTRACT:
A novel image development method and apparatus are disclosed, whereby image-wise charging of a toner layer is accomplished by induce air breakdown electrical discharge such that free mobile ions are introduced in the vicinity of an electrostatic latent image coated with a layer of developing material. The latent image causes the free mobile ions to flow in an image-wise ion stream corresponding to the latent image, which, in turn, leads to image-wise charging of the toner layer, such that the toner layer itself becomes the latent image carrier. The latent image carrying toner layer is subsequently developed and transferred to a copy substrate to produce an output document.

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patent: 5387760 (1995-02-01), Miyazawa et al.
patent: 5436706 (1995-07-01), Landa et al.
patent: 5619313 (1997-04-01), Domoto et al.

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