Electrographic recording process, means and apparatus

Details Electrographic recording process, means and apparatus Electrographic recording process, means and apparatus

1978-07-21

1980-06-03

Wolff, John H.

Chemistry: electrical and wave energy

Processes and products

346165, B41M 520, G01D 1534

Patent

active

042060176

ABSTRACT:
The invention relates to electrographic recording.
It relates to an electrographic recording process characterized by forming at least one permanent trace or mark by local injection of electrons by means of at least one marking electrode brought to negative potential in an electrosensitive layer containing grains of a color center-generating substance dispersed in an appropriate binder, said electrosensitive layer being supported by a layer which is a good conductor of electricity brought to a positive potential and containing a substance which is able to supply to the electrosensitive layer the same number of positive charges as electrons injected by the marking electrode.
The invention can be used in various recording implements.

REFERENCES:
patent: 3516911 (1970-06-01), Hopps
patent: 3772159 (1973-11-01), Sakata
patent: 3864684 (1975-02-01), Shimuzu
patent: 3891990 (1975-06-01), Wells
patent: 4012292 (1977-03-01), Fujiwara
patent: 4035244 (1977-07-01), Inque
patent: 4067780 (1978-01-01), Fujiwara

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