Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1994-06-20
1997-05-20
Reinhart, Mark J.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347158, 399291, B41J 2385
Patent
active
056316798
ABSTRACT:
An aperture electrode unit of an image forming apparatus includes an insulating sheet, control electrodes formed on the insulating sheet and apertures formed in the aperture electrode unit. The insulating sheet is formed of material having a dielectric constant higher than a toner layer. With this construction, a voltage applied across the control electrodes and the toner carry roller is divided in accordance with a capacity rate of these elements. Thus, the voltage is effectively applicable to the toner layer, so that the toner control performance can be improved even at a low-voltage driving time. Therefore, an excellent image recording operation can be performed by a low-voltage driving operation.
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Brother Kogyo Kabushiki Kaisha
Reinhart Mark J.
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