Media conductivity-based pulse controller for electrostatic prin

Details Media conductivity-based pulse controller for electrostatic prin Media conductivity-based pulse controller for electrostatic prin

1990-04-02

1991-10-08

Evans, Arthur G.

Boots, shoes, and leggings

346154, G06K 1500

Patent

active

050560425

ABSTRACT:
This invention is a control system for controlling an electrostatic printer/plotter electrostatically generating an image on a recording media being driven by a transport motor over a plurality of image-forming electrodes by applying image writing pulses to the electrodes. There is a media sensor for sensing which one of a plurality of pre-determined media types is currently being used in the printer/plotter and a sensor for measuring a parameter related to conductivity of the media. There is also a microprocessor for determinnig from the conductivity and type of media currently being used in the printer/plotter an optimum pulse width for the image writing pulses which maintains the density of an image produced on the media by the electrodes at a maximum density and for generating images employing image writing pulses transmitted to the electrodes which are of the optimum pulse width. Pulse repetition rate and media speed are also regulated in an optimum manner.

REFERENCES:
patent: 3943501 (1976-03-01), Kulka et al.
patent: 3943502 (1976-03-01), Huttsmith
patent: 4262294 (1981-04-01), Hara et al.

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