1995 Volume 34 Issue 3 Pages 173-180
An apparatus for triboelectric charging was designed and constructed. It allowed us to measure charging behavior of sample films dynamically under controlled atmospheres. Using this apparatus, dependences of charging characteristics on humidity and pressure were investigated for some toner components. The charging behavior was greatly dependent on humidity and pressure, and the dependence was a function of the material used.
The effect of film thickness on triboelectric charging was examined at varying humidities for polystyrene. Results revealed that charges penetrated into the bulk of the film, and the bulk charging effect was discussed on the basis of penetration of water molecules into the film.
Ambipolar charging behavior was observed for a polyester film denatured by styrene-acryl resin. It was interpreted by the coexistence of plus and minus charged area in the same film.
In addition, the effect of molecular weight of the sample materials on triboelectric charging is also described.
