Particle Size-Selective Transfer
Paper i proceeding, 1997

For every jumping powder development the competition between adhesion forces and the local electrical pull-off force determines whether development (transfer) is possible or not. With the general assumption that the toner charge is proportional to rn, n ≤ 2 for small particles, while for some developer systems it tends to become proportional to r for larger sizes, a theoretical model for this phenomenon was developed.

Our calculations predict the influence of magnetic adhesion, toner charge, nonuniform toner surface-charge density, choice of materials, and electrical field strength on a particle size-selective development. A strong indication of the relation between nonuniform toner surface-charge density and particle size-selective transfer is presented. Also an explanation of particle size-segregated toner layers is suggested.

Ideas on how to decrease the selectivity are suggested on the basis of our investigation.

toner particles

triboelectric charging

Författare

Hans Sandholt

Teknisk och maritim ledning

Günther Peter

Pelikan

Journal of Imaging Science and Technology

1062-3701 (ISSN)


0-89208-203-8 (ISBN)

The Society for Imaging Science and Technology
, ,

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Annan materialteknik

Fisk- och akvakulturforskning

Fundament

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2024-02-14