The effects of toner charge, size and surface structure on its adhesion forces

Hideyuki Akagi

doi:10.1117/12.2322222

1 May 1992 The effects of toner charge, size and surface structure on its adhesion forces

Hideyuki Akagi

Proceedings Volume 1670, Color Hard Copy and Graphic Arts; (1992) https://doi.org/10.1117/12.2322222
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

Abstract

Recent needs ofhigher copy quality with dry xerography led to aggressive pursuit of smaller particle size toners also in the toner technology areas. This is based on a beliefthat copy quality will be improved as the toner particle size is reduced. On the other hand, the toner size reduction has been known to cause difficulties in the xerographic process, such as poor transfer properties, for example. The development and transfer steps in the xerographic system depend on detachment of charged toner particles by the electric field which has to overcome the adhesion force to carrier beads and photoreceptor. In order to find out small toner well matching the xerographic process, understanding of adhesion forces of charged toner particles is necessary. We have evaluated the detachment field of charged toner particles varying the size, composition materials and surface structure. The results showed that the detachment field was dominated by the electrostatic force which in turn depended on the toner surface roughness. This roughness can be related to the actual contact area with the substrate surface. 7 ?m toners designed according to the above findings gave good transfer properties.

Citation Download Citation

Hideyuki Akagi "The effects of toner charge, size and surface structure on its adhesion forces", Proc. SPIE 1670, Color Hard Copy and Graphic Arts, (1 May 1992); https://doi.org/10.1117/12.2322222

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