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Volume: 22 | Article ID: art00035_1
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Treated Fumed Alumina Particles for Toners
Dmitry Fomitchev
Casey Whicher
Adam MacKay
Larry Flowers
William Williams
  DOI :  10.2352/ISSN.2169-4451.2006.22.1.art00035_1  Published Online :  January 2006
Abstract

Surface modified fumed metal oxide particles are used as external additives on toners in order to improve the free flow, tribo-electrostatic charging and other performance characteristics of the toner. The type of base metal oxide, particle morphology, surface area, and surface chemistry affect the properties of the additive. The type of the base metal oxide also puts certain limitations on possible chemical treatments, for instance, not all treatments used for fumed silica particles could be applied for titania and alumina.Untreated fumed alumina particles usually show low absolute level of tribo-electrostatic charging and relatively small variation of tribo-electrostatic charge due to changes of temperature and relative humidity. In this paper we will discuss the treatments of fumed alumina particles (i.e., Cabot grades SpectrAl® 51, SpectrAl® 81, and SpectrAl® 100) with different silicone fluids and different alkoxy silanes and the effect of these treatments on the properties of the additive. In particular, the effect of surface treatments on the absolute level of tribo-electrostatic charging, tribo-electrostatic charge humidity sensitivity, and free flow will be addressed.

Journal Title : NIP & Digital Fabrication Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/ISSN.2169-4451.2006.22.1.art00035_1
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Dmitry Fomitchev, Casey Whicher, Adam MacKay, Larry Flowers, William Williams, "Treated Fumed Alumina Particles for Toners"  in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP22),  2006,  pp 139 - 142,  https://doi.org/10.2352/ISSN.2169-4451.2006.22.1.art00035_1

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Copyright © Society for Imaging Science and Technology 2006
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NIP & Digital Fabrication Conference
nip digi fabric conf
2169-4451
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2169-4451(20060101)2006:1L.139;1-
nip_v2006n1/splitsection35.xml
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Articles
Treated Fumed Alumina Particles for Toners
FomitchevDmitry
WhicherCasey
MacKayAdam
FlowersLarry
WilliamsWilliam
01012006
2006
1
139
142
2006
Surface modified fumed metal oxide particles are used as external additives on toners in order to improve the free flow, tribo-electrostatic charging and other performance characteristics of the toner. The type of base metal oxide, particle morphology, surface area, and surface chemistry affect the properties of the additive. The type of the base metal oxide also puts certain limitations on possible chemical treatments, for instance, not all treatments used for fumed silica particles could be applied for titania and alumina.Untreated fumed alumina particles usually show low absolute level of tribo-electrostatic charging and relatively small variation of tribo-electrostatic charge due to changes of temperature and relative humidity. In this paper we will discuss the treatments of fumed alumina particles (i.e., Cabot grades SpectrAl® 51, SpectrAl® 81, and SpectrAl® 100) with different silicone fluids and different alkoxy silanes and the effect of these treatments on the properties of the additive. In particular, the effect of surface treatments on the absolute level of tribo-electrostatic charging, tribo-electrostatic charge humidity sensitivity, and free flow will be addressed.