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Triboelectric Charge Interaction of Polymers

IP.com Disclosure Number: IPCOM000108896D
Original Publication Date: 1992-Jun-01
Included in the Prior Art Database: 2005-Mar-23
Document File: 1 page(s) / 41K

Publishing Venue

IBM

Related People

Chen, HH: AUTHOR [+2]

Abstract

The triboelectric charge interactions between polymers play a significant role in Electrophotography. In a non-magnetic monocomponent development system, the toner acquires tribocharge by interacting with a polymer coated developer roll and/or a doctor blade. In a dual component development system, the cleaning efficiency is directly affected by the tribocharge interactions between the toner and the cleaning brush made of polymers.

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Triboelectric Charge Interaction of Polymers

      The triboelectric charge interactions between polymers play a
significant role in Electrophotography.  In a non-magnetic
monocomponent development system, the toner acquires tribocharge by
interacting with a polymer coated developer roll and/or a doctor
blade.  In a dual component development system, the cleaning
efficiency is directly affected by the tribocharge interactions
between the toner and the cleaning brush made of polymers.

      A novel off-line technique to study the tribocharge
interactions between polymers has been developed.  A polymeric
material, either for a developer roll or a cleaning brush, is
dissolved in an effective solvent to obtain a dilute coating solution
(two percent or less in concentration).  Pour an adequate amount of
200 micron stainless steel beads in the solution and gently stir the
beads and solution to obtain a homogeneous slurry.  Filter the slurry
with a sintered glass funnel under vacuum followed by drying the
coated beads in a fluidized bed at an elevated temperature.  The
coated beads are then rolled in a can with a toner of interest for a
period of time.  The charge is then determined using a Faraday
blow-off setup.  Thus, the magnitude, the polarity and the charging
rate can be established.  This valuable information can be used in
designing a toner formulation, a cleaning brush, and a developer roll
in Electrophotography.

      Disclosed anonymously.