Electrostatic image recording method and apparatus therefor

Printing – Antismut device – Anti-offset material application

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101 1, 101DIG13, 346153, 355 3CH, 355 3DR, B41M 142

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active

041922328

ABSTRACT:
In an electrostatic image recording apparatus employing a series of recording styluses for forming a latent image on an electrostatic image recording drum, an over-discharge is conducted either by applying a very high voltage to the recording styluses or by first subjecting the drum to a pre-charge in one polarity and then forming the latent image on the drum by an over-discharge in the opposite polarity. Pre-charging of the drum enhances the effect of the subsequent discharging and permits over-discharge to be conducted with a lower voltage applied to the recording styluses than would otherwise be possible.

REFERENCES:
patent: 3023731 (1962-03-01), Schwertz
patent: 3063859 (1962-11-01), Heckscher
patent: 3064259 (1962-11-01), Schwertz
patent: 3147679 (1964-09-01), Schaffert
patent: 3178718 (1965-04-01), Le Baron
patent: 3182591 (1965-05-01), Carlson
patent: 3208076 (1965-09-01), Mott
patent: 3257222 (1966-06-01), Carlson
patent: 3358289 (1967-12-01), Lee
patent: 3460156 (1969-08-01), Byrd
patent: 3624661 (1971-11-01), Shebanow
"Contact Electrostatic Printing", McCurry, IBM Tech. Discl. Bulletin, vol. 13, No. 10, 3/71, pp. 3117-3118.

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