Electrostatically depositing and electrostatically neutralizing
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United States of America Patent
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Jul 16, 1991
Grant Date -
N/A
app pub date -
Dec 26, 1989
filing date -
Dec 26, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus (74) and method are provided for electrostatically depositing particles (64) of a first material onto a sheet (18) of a second material, and for electrostatically neutralizing the residual charge. The apparatus (74) includes a particle generator (20) for aspirating particles (64) of the first material, electrodes (60a and 60b) for electrostatically charging the particles (64) to a first polarity, an electrode (75) for electrostatically recharging a portion of the particles (64) to the opposite polarity, and a depositing chamber (22) for electrostatically depositing the particles of the opposite polarity subsequent to depositing the particles of the first polarity.
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