Comparison of Toner Adhesion Theories
Abstract:Recent measurements of toner adhesion have been reported [Dejesus et al., J. Imag. Sci. Technol. 52, 010503 (2008)] in which the ground plane was separated from the charged toner particles by a thin dielectric coating of varying thickness (0.8, 4.5, 9, and 22 μm thick), which is less than and approximately equal to the diameter of the toner particles used in the experiment, 7.1 μm. It is claimed that such data can be understood only in terms of an adhesion theory based on van der Waals adhesion. It is demonstrated in this article that the data are, in fact, consistent with the Proximity Theory of toner adhesion, which is an electrostatic theory of toner adhesion that assumes that there is electrostatic adhesion at every contact point due to the discreteness of charge. Combining this result with a comparison of theories of toner adhesion with data showing the effects on toner adhesion of changing the toner charge-to-mass ratio and the extraparticulate concentration leads to the conclusion that the Proximity Force dominates toner adhesion.
Document Type: Research Article
Affiliations: 7026 Calcaterra Dr., San Jose, California 95120
Publication date: January 1, 2009
The Journal of Imaging Science and Technology (JIST) is dedicated to the advancement of imaging science knowledge, the practical applications of such knowledge, and how imaging science relates to other fields of study. The pages of this journal are open to reports of new theoretical or experimental results, and to comprehensive reviews. Only original manuscripts that have not been previously published, nor currently submitted for publication elsewhere, should be submitted.
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