Gas separation: apparatus – Magnetic separating means
Patent
1974-10-22
1976-11-16
Klein, David
Gas separation: apparatus
Magnetic separating means
96 15, 252501, G03G 509
Patent
active
039922057
ABSTRACT:
This invention relates to electrophotographic recording material comprising an electrically conductive carrier material having thereon a photoconductive multi-layer system of a charge carrier producing dyestuff layer or organic material and an insulating, organic, covering layer thereon with at least one charge carrier transporting compound, said dyestuff layer comprising at least two pigment dyes absorbing in different spectral regions, i.e. in the region of relatively long waves and in the region of relatively short waves.
REFERENCES:
patent: 3357989 (1967-12-01), Byrne et al.
patent: 3870516 (1975-03-01), Smith et al.
patent: 3871882 (1975-03-01), Wiedemann
Bryan James E.
Hightower Judson R.
Hoechst Aktiengesellschaft
Klein David
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