Developing method for developer transfer under electrical bias a

Details Developing method for developer transfer under electrical bias a Developing method for developer transfer under electrical bias a

1982-09-29

1984-09-25

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430103, 430122, 118653, 118657, G03G 1309, G03G 1509

Patent

active

044736274

ABSTRACT:
This specification discloses a method of toner transfer development in which a low frequency alternating electrical bias is applied to the space between a latent image bearing member and a developer carrying member to develop the latent image on the latent image bearing member, and an apparatus for carrying out the same method. This bias has a first stage in which one-sided movement of developer particles from the developer carrying member to the image area of the latent image bearing member may take place, a second stage in which reciprocal movement of developer particles is effected between both the image and non-image areas of the latent image bearing member and the developer carrying member, and a third stage in which the intensity of the bias is reduced so that one-sided movement of developer particles from the developer carrying member to the image area and one-sided movement of developer particles from the non-image area to the developer carrying member may take place.

REFERENCES:
patent: 3346475 (1967-10-01), Matkan et al.
patent: 3866574 (1975-02-01), Hardennrook et al.
patent: 3890929 (1975-06-01), Walkup
patent: 3893418 (1975-07-01), Liebman et al.
patent: 3918966 (1975-11-01), Metcalfe et al.
patent: 4292387 (1981-09-01), Kanbe et al.

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