Developing electrophotographic images using aqueous ink and trea

Details Developing electrophotographic images using aqueous ink and trea Developing electrophotographic images using aqueous ink and trea

1977-10-21

1981-02-24

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

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

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

134 15, 134 39, 355 15, 430118, 430125, 430126, G03G 918

Patent

active

042528828

ABSTRACT:
This invention relates to an improvement in a copying process wherein a latent image produced on a chargeable imaging surface by electrostatic charging and exposure is developed by means of an aqueous ink and transferred onto a receiving material and the imaging surface is then cleaned, the improvement being that the imaging surface has a completely smooth, hydrophobic surface which preferably is not wetted by the aqueous ink applied by means of a known structured applicator element, and the cleaning liquid used to detach residual ink still present after transfer can be easily wiped off and forms a wetting angle of more than 90.degree. with the imaging surface.
The invention also relates to the developer liquid and the cleaning liquid used in the process.

REFERENCES:
patent: 3793018 (1974-02-01), Van Engeland
patent: 3834909 (1974-09-01), Usui et al.
patent: 3849171 (1974-11-01), Takahashi
patent: 3867170 (1975-02-01), Ferguson et al.
patent: 3885960 (1975-05-01), Anderson

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