Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1995-12-14
1999-10-12
Le, N.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347140, G03G 1306
Patent
active
059661518
ABSTRACT:
An image forming apparatus includes control power source section for controlling a potential to be supplied to a control electrode so that the potential becomes closer to a potential of the holder than a potential on center portions of gates caused by a potential difference across the holder and a counter electrode formed by a high voltage power source section when the charged toner is allowed to pass the gates. In accordance with the above arrangement, the toner receives electric force directing towards the center portions of the gates, and thus a prescribed-shaped dot having a smaller diameter than of the gates is formed on a recording medium. Moreover, since toner does not scatter, a dot to be formed on a recording medium has a clear outline and obtains sufficient density. Therefore, a clear image with high contrast can be obtained. Quality of an image formed on a recording medium can be improved only by controlling the potential to be supplied to the control electrode. Consequently, an image with good quality can be formed on a recording medium by satisfactorily controlling flying of the toner, thereby improving resolution of the image.
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U.S. application Ser. No. 08/534,280, Ueda, filed Sep. 27, 1995, Sharp K.K.
Conlin David G.
Le N.
Neuner George W.
Pham Hai C.
Sharp Kabushiki Kaisha
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