Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1997-01-17
1999-02-23
Braun, Fred L
Incremental printing of symbolic information
Ink jet
Ejector mechanism
B41J 206, G01D 1506
Patent
active
058749730
ABSTRACT:
A voltage from a high voltage power source is applied between a toner support and an opposing electrode to generate an electric field between the two elements which permits the toner carried on the toner support to jump to the opposing electrode side. A control electrode is provided between the toner support and the opposing electrode to control the jumping of the toner. The control electrode is formed with annular electrodes around gates through which the toner passes through. In this arrangement, one or the combination of the followings are featured: At the initial stage of the recording start, the toner support is made to rotate so that the amount of static charge on the toner is stabilized. After the toner is stabilized, the control power source applies a voltage for prohibiting the toner from jumping, to the annular electrodes, then applies a high voltage to the opposing electrode. Thus, the toner can be prevented from erroneously jumping from the toner support.
REFERENCES:
patent: 5329307 (1994-07-01), Takemura et al.
patent: 5404155 (1995-04-01), Kitamura
patent: 5504509 (1996-04-01), Kagayama
patent: 5614932 (1997-03-01), Kagayama
Braun Fred L
Conlin David G.
Daley, Jr. William J.
Sharp Kabushiki Kaisha
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