Printing – Antismut device – Anti-offset material application
Patent
1979-09-20
1981-07-07
Eickholt, E. H.
Printing
Antismut device
Anti-offset material application
101DIG13, 101 1, 3461531, 346155, 430 31, 430 35, 430 48, 430 55, 427 13, 355 3CH, G03G 1522
Patent
active
042768292
ABSTRACT:
The method of forming a charge-image on a charge-retaining object by applying an electrical image-activating energy and a mechanical image-activating energy in a manner to result in the functional dependence of the charge density of the consequent charge-image to the magnitudes of the image-activating energies and to the length of the activating time period, enabling the charge-image or the subsequent visible image to have a uniform desired level of desired density, controlled multiple levels of density, controlled continuously varying density, or a combination thereof. It also enables the trading off of charge density for a lower image-activating voltage and the trading off of charge-imaging speed for higher charge density. The resulting image is of high fidelity to the original. The simultaneous application of electrical and mechanical image-activating energies further provides the option of applying the electrical image-activating energy to only one side of the imaging object for the formation of the charge-image. One advantage of such an operating option is the removal of the restriction as to the cross-sectional geometry and to the thickness of the imaging object. Apparatus examplifying the embodiment of the invention are given.
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