Gas separation: apparatus – Magnetic separating means
Patent
1976-06-02
1978-01-03
Martin, Jr., Roland E.
Gas separation: apparatus
Magnetic separating means
96 1LY, 96 1SD, 1014011, 427 16, 427 19, G03G 1326
Patent
active
040664538
ABSTRACT:
This invention relates to an improvement in the process for the preparation of printing forms or metallic etchings from electrophotographic or electrographic reproduction materials composed of a support with a photoconductive or high-ohmic layer thereon, by charging and image-wise exposure, or by image-wise charging, development of the electrostatic image with a finely-divided toner, fixing, and removal of the layer in the image-free areas by means of a decoating solution, the improvement comprising developing the electrostatic image with a developer which reacts at least superficially with the image areas at room temperature, thereby simultaneously effecting development and resistance to the decoating solution, or developing the electrostatic image with a developer which reacts with the decoating solution and thereby deactivates it in the image areas.
REFERENCES:
patent: 3287114 (1966-11-01), Hoegl
patent: 3305359 (1967-02-01), Delmont
patent: 3406061 (1968-10-01), Metcalfe et al.
patent: 3615385 (1971-10-01), Lind
patent: 3745002 (1973-07-01), Honjo et al.
patent: 3748127 (1973-07-01), Amidon et al.
patent: 3839028 (1974-10-01), Tamai et al.
patent: 3954467 (1976-05-01), Takimoto et al.
Freimuth Franz
Lind Erwin
Bryan James E.
Hoechst Aktiengesellschaft
Martin Jr. Roland E.
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