Cleaning brush using the pyroelectric effect
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United States of America Patent
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Jun 13, 2000
Grant Date -
N/A
app pub date -
Dec 22, 1998
filing date -
Dec 22, 1998
priority date (Note) -
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Abstract
Apparatus for removing residual charged toner particles from a charge retentive surface characterized by a self-biasing pyroelectric cleaner brush and a detoning member for removing the charged particles from the self-biasing pyroelectric cleaner brush. The brush includes a pyroelectric polymer supported by a conductive roll with resistive fibers attached to one surface of the pyroelectric polymer. Heating and cooling of a pyroelectric polymer induces thermal expansion or contraction which create surface charge density charges that are used to supply charge to the resistive fibers. The oppositely charged resistive fibers contact the toner particles on the charge retentive surface to thereby remove them from the charge retentive surface.
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