Method of cleaning the record head of electrostatic image record

Details Method of cleaning the record head of electrostatic image record Method of cleaning the record head of electrostatic image record

1984-10-01

1986-11-04

Evans, A.

Recorders

Electric recording

Electrochemical

346154, 346 11, 369 71, 400701, G01D 1506

Patent

active

046212744

ABSTRACT:
A method of cleaning the record head of an image recording system of the transfer type including an electrostatic record head having a multiplicity of electrodes arranged in an array or arrays and a preliminary charging unit operative to uniformly charge a dielectric record medium to a predetermined pre-charge voltage before the record medium is to be passed to the record medium for being activated to produce electrostatic latent images thereon by selective application of control signals to the electrodes in addition to a predetermined recording bias voltage lower than the pre-charge voltage and constantly impressed on all of the electrodes throughout each page print cycle of the system. The method comprises applying a cleaning voltage to the electrodes during a period of time continuous to one of the page print cycles, the cleaning voltage being higher than the pre-charge voltage.

REFERENCES:
"Cleaning Apparatus for Mult. Printhead" by Applegate et al., IBM Tech. Disc. Bulletin, vol. 24, No. 2, Jul. 1981, pp. 923, 924.

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