The Paper's Abstract of The 3rd
International Conference on Imaging Science and Hardcopy
　

　

Tribocharging of Toner Particle 
in Two-Component Developer

 　
　 　

May 26-29,1998
Chongqing China

Youichi Nakamura, Yutaka Terao and Yasuyuki Suzuki

 Nippon Institute of Technology
4-1 Gakuendai, Miyashiro, Minami-Saitama,Saitama 345,Japan
Tel:(+81-480-34-4111, Fax: (+81)480-43-2941 E-mail: Nakamura@nit.ac.jp

　
　 Abstract:
　       Comparative study on tribocharging effect between polyester toner particles and polymer coated ferrite carrier beads in two-component developer is carried out by focusing on the particle size dependence of electric charge for the toner samples coated with or without silicas. Measurement of electric charge and particle size is performed by a modified E-SPART analyzer. In order to study size dependence, several toner samples of different mean diameters are prepared. About three thousands of particles are analyzed by the data processing. From the experimental results the n-th power dependence of diameter of tribocharge is n =2.02 for the particles without silica coating, and is n =1.62 for the particles with silica coating.  Electric charge on the toner particle with silica coating shows to be higher than that without silica coating due to a charge up effect. In the range of diameter,  from 4 $B&L(Jm to 9 $B&L(Jm, the maximum electri c charge of toner is also shown to be approximately limited by discharge in atmosphere on the surface.

　

中国复印科学与工程学会
Reprographic Scientists and Engineers Society of China 
7 Chang-Tu Rd.Tianjin300131,China  Tel:(22)26669189 Fax: (22)26669189 
E-mail: rsesc@public.tpt.tj.cn
.